{ "data": { "a": { "slug": "46elks", "name": "46elks Voice API", "vendor": "46elks AB", "vendorUrl": "https://46elks.com", "kind": "http-api", "category": "voice-calling", "summary": "46elks is a Swedish telecom operator's REST API for phone calls, SMS and virtual numbers in 48 countries, with JSON call actions, call recording, SIP and WebRTC clients, and a WebSocket Realtime Voice API for connecting AI agents to calls.", "url": "https://www.anchorterminal.com/tools/46elks", "markdownUrl": "https://www.anchorterminal.com/tools/46elks.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/46elks.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/46elks.json", "dns": "46elks.grade.anchorterminal.com", "repo": "https://github.com/46elks/46elks-getting-started", "license": "Proprietary service under the 46elks Terms of Service (effective 12 March 2024). Example code and the Swagger file are in the public 46elks-getting-started repository", "transports": [ "http", "websocket" ], "remoteUrl": "https://api.46elks.com/a1", "packages": [], "auth": "api-key", "authNotes": "HTTP Basic auth with an API username and password from the dashboard after a browser signup. Subaccounts have their own credentials. No scopes or read-only credentials found. Webhook origin can be verified per the Verify Callback Origin guide.", "pricing": "usage", "pricingNotes": "Per started minute, published by destination. UK calls cost €0.02 to landlines and €0.456 to mobiles, forwarding to a WebSocket €0.015 and to a SIP trunk €0.01. Incoming calls are free. Numbers usually €3 a month. Prepaid balance or invoice (checked 2026-11-06).", "priceSummary": "$3.50 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, the docs or the pricing page (checked 2026-11-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://46elks.com/docs/make-call", "llmsTxt": "https://46elks.com/llms.txt", "openapi": "https://raw.githubusercontent.com/46elks/46elks-getting-started/master/code-examples/Swagger/46elksAPI.yaml", "capabilities": [ "voice.calls", "voice.numbers", "voice.streaming", "voice.sip", "voice.recording", "messaging.sms" ], "tags": [ "hosted", "official", "closed-source", "usage", "prepaid", "llms-txt", "openapi", "webhooks", "websocket", "sip", "phone-numbers", "status-page", "eu" ], "graded": true, "anchor": { "graded": true, "score": 44.4, "grade": "E", "agentReady": false, "rank": 1203, "ranked": true, "rankOf": 1486, "categoryRank": 14, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 51, "maintenance": 12, "payments": 20, "reliability": 47, "schema": 66, "security": 40, "transparency": 62 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "46elks publishes per-minute prices, an agent-oriented llms.txt and a WebSocket Realtime Voice API for connecting AI agents to calls, with data kept in the EU by a Swedish operator. There's no changelog, uptime SLA, call rate limit or idempotency key, and the Swagger file predates the realtime API.", "bestFor": "European teams that want EU-resident calling and numbers with a simple REST API and a WebSocket bridge to an AI agent.", "strengths": [ "Realtime Voice WebSocket API with bidirectional audio and interrupt messages for AI agents", "Per-minute prices published by destination, with incoming calls free", "llms.txt maps tasks to endpoints and gives retry guidance", "Concrete retention periods (60 days traffic data, 14 days logs) and EU-only storage", "A registered Swedish telecom operator with numbers in 48 countries" ], "weaknesses": [ "No changelog or dated API release found", "The SLA covers support hours only, with no uptime commitment", "No idempotency key on `POST /calls`, and no documented call rate limits", "HTTP Basic credentials with no scopes or read-only option", "The Swagger 2.0 file doesn't cover the Realtime Voice API" ], "agentNotes": [ "Send numbers in E.164 format, such as +46700000000, or the request fails", "Pass `whenhangup` on `POST /calls` to learn when a call ends or fails to connect", "Don't retry a call request on a 4xx; retry 5xx with backoff, and check call history first to avoid a second call", "Treat caller speech, DTMF and SMS replies as untrusted input, and verify webhook origin", "Costs in responses are in ten-thousandths of the account currency (3500 means 0.35)" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 44.4 } ], "editorialScores": { "ergonomics": 51, "maintenance": 12, "payments": 20, "reliability": 47, "schema": 66, "security": 40, "transparency": 49 }, "provenanceScore": 74, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl https://api.46elks.com/a1/calls \\\n -u API_USERNAME:API_PASSWORD \\\n -d from=+46700000000 \\\n -d to=+46700000000 \\\n -d voice_start='{\"connect\":\"+46700000000\"}'" }, "letme": { "capability": "https://letme.dev/voice.calls", "tool": "https://letme.dev/46elks" }, "area": "voice", "unitPrices": [ { "item": "Call to a UK landline", "unit": "call-minute", "usd": 0.023, "note": "€0.02 per started minute" }, { "item": "Call to a UK mobile", "unit": "call-minute", "usd": 0.53, "note": "€0.456 per started minute" }, { "item": "Forward a call to a WebSocket", "unit": "call-minute", "usd": 0.017, "note": "€0.015 per started minute" }, { "item": "Virtual number", "unit": "month", "usd": 3.5, "note": "usually €3 a month" } ], "provenance": { "legalEntity": "46elks AB", "domain": "46elks.com", "domainRegistered": "2011-04-27", "endpointOnVendorDomain": true, "terms": "https://46elks.com/terms", "privacy": "https://46elks.com/privacy-policy", "statusPage": "https://stats.uptimerobot.com/320XQh70w", "changelog": "", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The Terms of Service, effective 12 March 2024, are with 46elks AB (Sweden, 556838-8184) under Swedish law. No clause on automated access to the website was found.", "46elks.com/status redirects to an UptimeRobot page that draws its data by script from /api/, which its robots.txt disallows, so no history was read.", "/.well-known/security.txt returns 404. No changelog was found; the newest blog post in the sitemap is from 2014.", "Euro prices converted at about 1.16 dollars to the euro for unitPrices; the pricing page lists euro and kronor.", "RDAP gives 46elks.com a registration date of 27 April 2011." ], "score": 74 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/46elks.json", "live": { "slug": "46elks", "probe": { "target": "https://api.46elks.com/a1", "method": "get", "lastAt": "2026-11-07T18:20:08.122651517Z", "lastOk": true, "lastStatus": 401, "lastMs": 426, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 318, "p95ms24h": 457, "samples24h": 200, "samples30d": 200, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://stats.uptimerobot.com/320XQh70w", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:47:03.46439958Z" }, "githubStars": 57, "securityTxt": { "url": "https://46elks.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:02:02.719722143Z" }, "llmsTxt": { "url": "https://46elks.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:31:04.362648825Z" }, "pages": [ { "url": "https://46elks.com/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T13:58:27.545226578Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "bff2a55e1a02" }, { "url": "https://46elks.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T13:58:29.648545838Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "be068526a0d6" } ], "updatedAt": "2026-11-07T18:20:08.122651517Z" } }, "answer": "Twilio Programmable Voice API + MCP scores 77.4 (BB) on agent readiness against 46elks Voice API's 44.4 (E), and leads in every scored category.", "b": { "slug": "twilio-voice", "name": "Twilio Programmable Voice API + MCP", "vendor": "Twilio", "vendorUrl": "https://www.twilio.com", "kind": "http-api", "category": "voice-calling", "summary": "Programmable Voice for placing and answering calls on Twilio numbers in 100+ countries, controlled with TwiML or REST.", "url": "https://www.anchorterminal.com/tools/twilio-voice", "markdownUrl": "https://www.anchorterminal.com/tools/twilio-voice.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/twilio-voice.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/twilio-voice.json", "dns": "twilio-voice.grade.anchorterminal.com", "repo": "https://github.com/twilio-labs/mcp", "license": "MIT", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.twilio.com/2010-04-01", "packages": [ { "registry": "npm", "name": "twilio" }, { "registry": "pypi", "name": "twilio" }, { "registry": "npm", "name": "@twilio-alpha/mcp" } ], "auth": "mixed", "authNotes": "HTTP Basic auth with the Account SID and Auth Token, or an API key SID and secret (recommended). Webhooks and Media Streams or ConversationRelay websocket connections carry an `X-Twilio-Signature` to validate. The hosted docs MCP needs no credentials. The local alpha MCP takes `ACCOUNT_SID/API_KEY:API_SECRET` as a command-line argument.", "pricing": "usage", "pricingNotes": "Pay as you go, per minute. US outbound $0.014 a minute, inbound $0.0085 on local numbers and $0.022 on toll-free. Local numbers $1.15 a month, toll-free $2.15. Media Streams $0.0044 a minute, ConversationRelay $0.07 a minute, SIP interface and browser or app calls $0.004 a minute, recording $0.0025 a minute plus $0.0005 a minute a month storage, transcription $0.05 a minute, answering machine detection $0.0075 a call. The trial needs no card and gives free units, including 75 voice minutes, for 30 days (https://www.twilio.com/en-us/voice/pricing/us, https://www.twilio.com/docs/usage/tutorials/how-to-use-your-free-trial-account).", "priceSummary": "$1.15 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 support in docs, pricing or MCP README (checked 2026-09-30).", "endpoints": [] }, "toolCount": 2, "popularity": { "githubStars": 111, "npmWeekly": 7213599, "pypiWeekly": 4834611, "asOf": "2026-09-30" }, "docsUrl": "https://www.twilio.com/docs/voice", "llmsTxt": "https://www.twilio.com/docs/llms.txt", "openapi": "https://raw.githubusercontent.com/twilio/twilio-oai/main/spec/json/twilio_api_v2010.json", "capabilities": [ "voice.calls", "voice.numbers", "voice.streaming", "voice.sip", "voice.recording", "voice.transfer" ], "tags": [ "hosted", "no-card", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks", "streaming", "enterprise" ], "lastRelease": "2026-10-12", "graded": true, "anchor": { "graded": true, "score": 77.4, "grade": "BB", "agentReady": true, "rank": 31, "ranked": true, "rankOf": 1486, "categoryRank": 1, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 85, "payments": 40, "reliability": 75, "schema": 92, "security": 85, "transparency": 81 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": 0, "verdict": "Twilio APIs SLA at 99.95 per cent for every paying customer, with 10 per cent credits. US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay.", "bestFor": "Teams that want the widest number coverage and a managed speech layer (ConversationRelay) behind one vendor, or a published SLA.", "strengths": [ "Twilio APIs SLA at 99.95 per cent for every paying customer, with 10 per cent credits", "Restricted API keys with up to 100 endpoint permissions each", "Public OpenAPI specs, llms.txt with Markdown twins, and a numbered error dictionary", "No-card trial with 75 free voice minutes for 30 days", "twilio-node released four times in the last 90 days, most recently 6.2.0 on 2026-10-12" ], "weaknesses": [ "US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay", "1 outbound call a second per account by default", "No idempotency key on call creation", "ConversationRelay US1 was down for Deepgram nova-2 and nova-3 users for 2 hours 43 minutes on 3 August 2026", "The MCP that can place calls is an alpha last published in July 2025, and the hosted one only searches docs" ], "agentNotes": [ "Use `\u003cConnect\u003e\u003cStream\u003e` for two-way audio. It blocks further TwiML until the websocket closes", "Use `\u003cConnect\u003e\u003cConversationRelay\u003e` when you only want to handle text, set `interruptible` for barge-in, and keep a second speech provider configured", "Trial calls reach only verified numbers in your sign-up country", "Retry a 429 with backoff, but check the Calls list before retrying a create that timed out, since there's no idempotency key", "Validate `X-Twilio-Signature` on every webhook and websocket upgrade" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 3.1, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 77.4 } ], "editorialScores": { "ergonomics": 80, "maintenance": 85, "payments": 40, "reliability": 75, "schema": 92, "security": 85, "transparency": 72 }, "provenanceScore": 90, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-10-17", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST \"https://api.twilio.com/2010-04-01/Accounts/$TWILIO_ACCOUNT_SID/Calls.json\" \\\n -u \"$TWILIO_API_KEY:$TWILIO_API_SECRET\" \\\n --data-urlencode \"To=+15558675310\" --data-urlencode \"From=+15017122661\" \\\n --data-urlencode \"Twiml=\u003cResponse\u003e\u003cSay\u003eHello from Twilio\u003c/Say\u003e\u003c/Response\u003e\"", "claudeCode": "claude mcp add --transport http twilio-docs https://mcp.twilio.com/docs", "config": { "mcpServers": { "twilio": { "args": [ "-y", "@twilio-alpha/mcp", "${TWILIO_ACCOUNT_SID}/${TWILIO_API_KEY}:${TWILIO_API_SECRET}", "--services", "twilio_api_v2010" ], "command": "npx" } } } }, "letme": { "capability": "https://letme.dev/voice.calls", "tool": "https://letme.dev/twilio-voice" }, "sameCompany": [ "stytch-connected-apps", "sendgrid", "twilio" ], "area": "voice", "unitPrices": [ { "item": "Outbound call, US", "unit": "call-minute", "usd": 0.014, "note": "local or toll-free destinations" }, { "item": "Inbound call, US local number", "unit": "call-minute", "usd": 0.0085 }, { "item": "Inbound call, US toll-free number", "unit": "call-minute", "usd": 0.022 }, { "item": "US local number", "unit": "month", "usd": 1.15 }, { "item": "US toll-free number", "unit": "month", "usd": 2.15 }, { "item": "Media Streams", "unit": "call-minute", "usd": 0.0044, "note": "on top of call minutes" }, { "item": "ConversationRelay", "unit": "call-minute", "usd": 0.07, "note": "on top of call minutes" }, { "item": "Call recording", "unit": "call-minute", "usd": 0.0025 } ], "provenance": { "legalEntity": "Twilio Inc.", "domain": "twilio.com", "domainRegistered": "2007-10-26", "endpointOnVendorDomain": true, "terms": "https://www.twilio.com/en-us/legal/tos", "privacy": "https://www.twilio.com/en-us/legal/privacy", "statusPage": "https://status.twilio.com", "changelog": "https://www.twilio.com/en-us/changelog", "securityTxt": "none", "checked": "2026-11-01", "notes": [ "The terms name Twilio Ireland Limited for customers in the EEA, UK, Switzerland and a few other countries, and local entities in Mexico, Brazil and Japan. Twilio Inc. contracts everywhere else (per the 4 October check). The terms were last updated 16 July 2026, re-read on 1 November.", "twilio.com/.well-known/security.txt returned 404 on 1 November 2026.", "status.twilio.com/history carries the incident list for the last three months in the page itself. Its robots.txt disallows /api/, so the Statuspage JSON was not read." ], "score": 90 }, "requirements": { "setupChecked": true, "complianceChecked": true, "card": "paid-only", "freeTier": true, "minutes": 10, "credential": "api-key", "hosting": [ "US", "EU", "APAC" ], "euResidency": "yes", "trainsOnData": "unknown", "zeroRetention": "unknown", "certifications": [ "SOC 2 Type II", "ISO 27001", "PCI DSS", "HIPAA (BAA available)", "GDPR" ], "dpa": true, "selfHost": "no" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/twilio-voice.json", "live": { "slug": "twilio-voice", "probe": { "target": "https://api.twilio.com/2010-04-01", "method": "get", "lastAt": "2026-11-07T18:21:02.118252982Z", "lastOk": true, "lastStatus": 200, "lastMs": 32, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 27, "p95ms24h": 112, "samples24h": 239, "samples30d": 7910, "days": [ { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.twilio.com", "indicator": "minor", "summary": "Partially Degraded Service", "checkedAt": "2026-11-07T18:22:06.382141921Z" }, "versions": [ { "registry": "github", "name": "twilio-labs/mcp", "version": "0.0.3", "released": "2025-03-25", "seenAt": "2026-11-07T00:13:16.814281194Z" }, { "registry": "npm", "name": "@twilio-alpha/mcp", "version": "0.7.0", "seenAt": "2026-11-07T00:13:15.637221167Z" }, { "registry": "npm", "name": "twilio", "version": "6.3.0", "seenAt": "2026-11-07T00:13:14.613343757Z" }, { "registry": "pypi", "name": "twilio", "version": "9.13.0", "released": "2026-11-06", "seenAt": "2026-11-07T00:13:15.484563737Z" } ], "githubStars": 114, "npmWeekly": 9400425, "pypiWeekly": 6109032, "securityTxt": { "url": "https://twilio.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:02:04.255656266Z" }, "llmsTxt": { "url": "https://www.twilio.com/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:12.230049354Z" }, "domain": { "domain": "twilio.com", "registered": "2007-10-26", "source": "https://rdap.verisign.com/com/v1/domain/twilio.com", "checkedAt": "2026-11-01T14:10:34.201582768Z" }, "pages": [ { "url": "https://www.twilio.com/en-us/changelog/conference-list-endpoint-july-2026", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:36:11.366374769Z", "changedAt": "2026-11-04T08:46:50.452259042Z", "fingerprint": "e42f7899b2ae" }, { "url": "https://www.twilio.com/en-us/voice/pricing/us", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:36:26.84320366Z", "changedAt": "2026-11-04T08:47:07.136409193Z", "fingerprint": "cd114991e1ef" } ], "mcpTools": { "url": "https://mcp.twilio.com/docs", "checkedAt": "2026-11-07T01:48:49.467750426Z", "status": "ok", "note": "answered without the initialize handshake", "tools": [ { "name": "twilio__retrieve", "description": "Fetch full parameter schemas and response details for one or more Twilio API operations or documentation articles. Use this after twilio__search to get the complete request body fields, path/query parameters, response schema, and curator guidance needed to actually call the API. Pass the id values exactly as returned by twilio__search.", "inputSchema": { "properties": { "fields": { "description": "Optional. Limit which top-level fields are returned for each result to reduce payload size. Omit to receive the full spec. For API operations, 'request_body' returns request parameters and body schema; 'response_fields' returns the response schema. Identity fields (api, method, path, operation_id) are always included. All other fields — including intent, summary, description, product, version, and response_schema — are excluded when fields is set. Use twilio__search first to get intent and summary; only use fields here when you need the raw parameter or response schema.", "items": { "enum": [ "request_body", "response_fields" ], "type": "string" }, "maxItems": 2, "minItems": 1, "type": "array" }, "ids": { "description": "One or more id values (format: 'op::{api}::{operation_id}') copied verbatim from twilio__search results — do not construct or guess IDs. Only call this tool after calling twilio__search and receiving results. Pass multiple ids to batch-fetch related operations in one call.", "items": { "type": "string" }, "maxItems": 10, "minItems": 1, "type": "array" } }, "required": [ "ids" ], "type": "object" }, "annotations": { "destructiveHint": false, "readOnlyHint": true } }, { "name": "twilio__search", "description": "Search Twilio documentation and API operations by natural language query. Use source=\"docs\" for conceptual guides and setup questions, source=\"api\" for finding specific API endpoints and operations, or source=\"all\" (default) when unsure. Returns ranked documentation snippets and/or API operation summaries. Use twilio__retrieve with an id from API results to get full parameter schemas.", "inputSchema": { "properties": { "limit": { "default": 5, "description": "Maximum number of results to return. Default 5, max 10. Increase only when you need broader coverage.", "maximum": 10, "minimum": 1, "type": "integer" }, "product": { "description": "Optional. Restrict API results to a specific Twilio product. Only applies when source=\"api\" or source=\"all\". Use \"api_v2010\" for the core Twilio communications REST API (calls, SMS/MMS, phone numbers, conferences, recordings).", "enum": [ "accounts", "api_v2010", "bulkexports", "chat", "content", "conversations", "events", "flex", "flex-api", "frontline", "iam", "iam_organizations", "iam_scim", "insights", "intelligence", "ip_messaging", "knowledge", "lookups", "marketplace", "memory", "messaging", "monitor", "notify", "numbers", "oauth", "preview", "pricing", "proxy", "routes", "sendgrid", "serverless", "studio", "supersim", "sync", "taskrouter", "trunking", "trusthub", "tsg", "verify", "video", "voice", "wireless" ], "type": "string" }, "query": { "description": "Natural language question or description of what you want to do. Be specific — 'how to set up ConversationRelay' or 'send an SMS message' work better than 'relay' or 'messaging'.", "maxLength": 200, "minLength": 3, "type": "string" }, "source": { "default": "all", "description": "Use \"docs\" for conceptual guides, tutorials, and setup questions. Use \"api\" for finding specific API endpoints, operations, and parameters — preferred for coding tasks. Use \"all\" when unsure (default). \"all\" fires both searches in parallel and interleaves results by rank.", "enum": [ "docs", "api", "all" ], "type": "string" }, "topics": { "description": "Optional. Restrict doc search to specific sources. Omit to search twilio_docs (default) when you don't know. Only applies when source=\"docs\" or source=\"all\".\n- twilio_docs: API references, error codes, TwiML, SDK docs, tutorials (twilio.com/docs)\n- support_docs: troubleshooting and account support (help.twilio.com)\n- twilio_com: Twilio marketing and product pages\n- twilio_customers: customer stories and case studies\n- twilio_org: Twilio.org social impact content\n- sendgrid: SendGrid product documentation\n- sendgrid_support: SendGrid support articles\n- segment: Segment CDP documentation", "items": { "enum": [ "twilio_docs", "support_docs", "twilio_com", "twilio_customers", "twilio_org", "sendgrid", "sendgrid_support", "segment" ], "type": "string" }, "maxItems": 4, "minItems": 1, "type": "array" }, "version": { "description": "Optional. Omit for latest version only, \"any\" for any version, or a specific version e.g. \"v2\". Requires product to also be set when pinning to a specific version.", "type": "string" } }, "required": [ "query" ], "type": "object" }, "annotations": { "destructiveHint": false, "readOnlyHint": true } } ], "schemaTokens": 1182, "changedAt": "2026-11-07T01:48:49.467750426Z", "check": { "checker": "anchor-check/1.0", "totalTokens": 1182, "counts": { "error": 0, "note": 1, "warn": 0 }, "findings": [ { "rule": "TC24", "severity": "note", "message": "2 of 2 tools have no outputSchema", "fix": "Declare outputSchema for tools that return structured data, and return structuredContent that matches it." } ] } }, "github": { "repo": "twilio-labs/mcp", "checkedAt": "2026-11-02T09:33:24.092881255Z", "stars": 113, "archived": false, "issuesEnabled": true, "pushedAt": "2026-02-14T10:40:21Z", "openIssues": 13, "openPRs": 12, "issuesOpened90d": 1, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 13, "unanswered": 13 } }, "updatedAt": "2026-11-07T18:22:06.382141921Z" } }, "edges": [ { "by": 73, "category": "maintenance", "leads": "twilio-voice", "name": "Maintenance \u0026 community", "reasons": { "a": "No changelog, release notes or dated API change was found, the sitemap's newest blog post is from 2014, and the Swagger file predates Realtime Voice (0). No dated changes in the 90 days from 8 August (0). Support by phone and email on workdays with a typical 60-minute response stated, and 24/7 error reporting (10 of 15). No official SDK (0). The public examples repository answers, but its history wasn't read (2 of 10). 0+0+10+0+2 = 12.", "b": "twilio-node 6.2.0 tagged on 2026-10-12, still the newest tag on 1 November, 20 days old (30). Releases 6.1.0, 6.1.1, 6.1.2 and 6.2.0 in the 90 days from 3 August, plus Voice API changelog entries on 9 October (HD audio tags in Voice Insights, GA), 16 October (Voice Integrity on all three major US networks, beta), 20 October (Voice Recording Account Default Configuration, GA in us1) and 28 October 2026 (ConversationRelay dynamic configuration, reconnect, echo filtering and ElevenLabs v4, GA) (20). Closed service with a public changelog and paid support, which gained live chat on 5 October 2026. The twilio-labs/mcp repo has had no commit since v0.7.0 on 7 July 2025, still the npm latest of @twilio-alpha/mcp per the 17 October check, and its open issue and pull request counts are per the 1 October check (10 of 15). Official SDKs current in seven languages (15). twilio-node needs Node 20 or later, so dependencies are current (10)." }, "scores": { "a": 12, "b": 85 } }, { "by": 45, "category": "security", "leads": "twilio-voice", "name": "Security \u0026 auth", "reasons": { "a": "HTTP Basic credentials per account, with separate credentials per subaccount and no scopes found (18 of 30). Subaccounts separate traffic, with no read-only credential or confirmation for paid actions (6 of 20). Callers' speech, DTMF and SMS replies reach the agent as untrusted input. The docs show how to verify callback origin, with no prompt-injection guidance (5 of 15). Call, SMS and recording history through the API for 90 days (8 of 15). A registered Swedish telecom operator, but no security.txt (404), disclosure policy, bug bounty or certification was found (3 of 20). 18+6+5+8+3 = 40.", "b": "API keys come as standard, main or restricted. Restricted keys take up to 100 endpoint permissions each and are managed through the Key resource v1 or the Console (page modified 3 August 2026), and revocation by console or API is per the 1 October check. No documented option to send a secret in a query string (30). Restricted keys can leave out endpoints such as call recordings, but no MCP has a confirmation step for dialling or buying numbers (15 of 20). Calls carry untrusted caller speech. Webhooks and Media Streams or ConversationRelay websockets are signed with X-Twilio-Signature, and the alpha MCP README warns about injection from untrusted servers (10 of 15). The Monitor Events API keeps an audit trail of account changes, and every call has a log resource (15). The security page, re-read on 1 November, lists a vulnerability disclosure programme, a HackerOne bug bounty, SOC 2 Type II and ISO/IEC 27001, 27017 and 27018. No security.txt (twilio.com/.well-known/security.txt returns 404 on 1 November). twilio-node has no SECURITY.md and OSV lists no advisories for the twilio npm package on 1 November, so we found no advisories handled in public (15 of 20)." }, "scores": { "a": 40, "b": 85 } }, { "by": 29, "category": "ergonomics", "leads": "twilio-voice", "name": "Agent ergonomics", "reasons": { "a": "Compact JSON responses, and call actions returned as small JSON objects (18 of 25). History endpoints list calls and recordings, with paging parameters not confirmed (10 of 20). Errors carry `error` and `detail` (12 of 20). No idempotency key on `POST /calls` or number allocation (3 of 20). Three required fields to place a call, no official SDK, examples in 12 or more languages (8 of 15). 18+10+12+3+8 = 51.", "b": "List resources take PageSize (up to 1,000) and PageToken and return next_page_uri, with no field selection (15 of 25). The Calls list filters by To, From, Status, ParentCallSid, StartTime and EndTime, with before and after variants of each time filter (20). Numbered error codes with causes and fixes an agent can act on (20). No idempotency key on call creation. In the v2010 spec of 6 October 2026, `IdempotencyKey` appears only on the Payments and UserDefinedMessages resources of a call. The docs say a 429 is safe to retry, and webhooks carry an I-Twilio-Idempotency-Token for de-duplication (10 of 20). A call needs only To, From and one of Url, Twiml or ApplicationSid, and official SDKs exist in seven languages (15)." }, "scores": { "a": 51, "b": 80 } }, { "by": 28, "category": "reliability", "leads": "twilio-voice", "name": "Reliability", "reasons": { "a": "Graded on the hosted REST and Realtime Voice APIs with the hosted lines. A status page exists, linked from 46elks.com/status on UptimeRobot (20). It draws its data by script from a path its robots.txt disallows, so no history was readable (5). SMS sending speed is documented in the FAQ, but no limit for calls, numbers or WebSocket sessions was found (5 of 15). llms.txt says to retry 5xx with exponential backoff and not to retry 4xx unchanged, with no Retry-After or idempotency for `POST /calls` (7 of 15). The SLA page commits to support hours and 24/7 error reporting with no uptime figure, and extended SLAs are by sales (0). Voice and Realtime Voice carry no beta label (10). 20+5+5+7+0+10 = 47.", "b": "Status page at status.twilio.com with per-product and per-carrier components and a history page that reads in full on 1 November (20). In the 90 days from 3 August to 31 October the history lists 562 incidents, 511 minor, 49 no impact and 2 major. Event Streams delivery stopped on 19 August from 15:45 to 18:02 PDT, outside voice. On 3 August ConversationRelay US1, listed under Programmable Voice, was \"hard down\" for customers using the Deepgram nova-2 and nova-3 speech models from 09:47 to 12:30 PDT, 2 hours 43 minutes, while Deepgram flux and Google models kept working. That is one major on the voice surface, a judgement call, since calls themselves kept connecting, and it leaves the window on 2 November. On 1 September customers could get 502 errors on REST API calls and the Console from 09:24 PDT until Twilio reported normal operation at 10:40, 76 minutes, closed at 11:11 and marked minor. Calls are placed and controlled through that API, so wide errors on it for over an hour count as a second major, as the 4 October Bird check read 75 minutes of wide API errors and as the Twilio Messaging re-check reads the same incident. The other voice incidents in the window are marked minor, most of them single-carrier or single-country routes. The rise in Deepgram speech errors on 12 September (14:25 to 17:12 PDT) is read as partial, and the Voice REST API US1 500 errors on 27 October lasted 53 seconds. Two majors fall between the one-major and several-majors lines (5). A reading that counts only call placement would give 10. Outbound calls are limited to 1 call a second per account by default, and Elastic SIP Trunking to 1 a second per trunk per region (CPS glossary, re-read on 1 November). Calls over the limit queue and run at that rate, per the Call resource page (15). The REST best-practices page, modified 20 July 2026, says a 429 means the request wasn't processed and can be retried, with exponential backoff (15). The Twilio APIs SLA, last updated 9 April 2026, commits 99.95 per cent to paying customers and 99.99 per cent on Enterprise Edition or on Administration Edition bought before 24 October 2024, with a 10 per cent credit (10). Programmable Voice is generally available (10). 20+5+15+15+10+10 = 75." }, "scores": { "a": 47, "b": 75 } }, { "by": 26, "category": "schema", "leads": "twilio-voice", "name": "Schema \u0026 documentation", "reasons": { "a": "A Swagger 2.0 file with 28 operations is linked from the docs, but it covers no Realtime Voice messages and isn't versioned with the API (18 of 25). An llms.txt written for agents, with a task-to-endpoint table and webhook payloads, while docs pages are HTML (10). Each docs page explains parameters and when webhooks fire, such as `voice_start` loading only once a call connects (14 of 20). Form-encoded parameters with types in the Swagger file and few enums (9 of 15). Examples in many languages and a JSON error shape, with no error list (10 of 15). The `/a1/` path, with no changelog found (5 of 15). 18+10+14+9+10+5 = 66.", "b": "Public OpenAPI specs in the twilio-oai repository, including twilio_api_v2010 for calls, last regenerated on 6 October 2026 (25). llms.txt with Markdown twins of the docs, 383,795 bytes and last modified 31 October 2026, and a hosted docs MCP in public beta at mcp.twilio.com/docs that searches over 1,800 endpoints (10). The API reference and TwiML pages say when to use Stream for raw audio and ConversationRelay for text only (15 of 20). Typed parameters with enums from the spec, though calls take form-encoded fields (12 of 15). Code samples in every SDK language and a numbered error and warning dictionary (15). API version in the path (2010-04-01) and a public changelog with dated voice entries on 9, 16, 20 and 28 October 2026 (15)." }, "scores": { "a": 66, "b": 92 } }, { "by": 20, "category": "payments", "leads": "twilio-voice", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). Per-minute prices by destination are public without login, also in kronor, with incoming calls free (20). No free credit; only SMS to the test number +46700000000 costs nothing, and accounts are prepaid or invoiced against a deposit (0). A person signs up in a browser and copies the credentials (0). 0+20+0+0 = 20.", "b": "No x402, MPP or L402 on the pricing page or the docs MCP page (0). US per-minute rates for calls, numbers, Media Streams, ConversationRelay, recording and SIP published without a login, re-read on 1 November (20). Free trial without a card, with free units including 75 voice minutes for 30 days, per the trial doc modified 25 September 2026. The US voice pricing page still describes the trial as $15 of credit to buy a phone number and try Voice (20). A person has to sign up in a browser and verify a phone number (0)." }, "scores": { "a": 20, "b": 40 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "46elks AB", "b": "Twilio", "name": "Vendor" }, { "a": "https://api.46elks.com/a1", "b": "https://api.twilio.com/2010-04-01", "name": "Hosted endpoint" }, { "a": "HTTP, websocket", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "$0.017 per minute of call", "b": "$0.0025 per minute of call", "name": "Price for phone calls" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under the 46elks Terms of Service (effective 12 March 2024). Example code and the Swagger file are in the public 46elks-getting-started repository", "b": "MIT", "name": "Licence" }, { "a": "none", "b": "2", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "none", "b": "2026-10-12", "name": "Last release" }, { "a": "2024-03-12", "b": "2026-07-16", "name": "Terms last updated" }, { "a": "2018-05-20", "b": "2026-04-09", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "111 stars, 7.2M npm/wk, 4.8M PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "3.1/5 (8)", "name": "Agent reviews" } ], "faq": [ { "answer": "Twilio Programmable Voice API + MCP scores 77.4 (BB) on agent readiness against 46elks Voice API's 44.4 (E), and leads in every scored category.", "question": "Which is better for AI agents, 46elks Voice API or Twilio Programmable Voice API + MCP?" }, { "answer": "Twilio Programmable Voice API + MCP, at $0.0025 per minute of call against $0.017 per minute of call for 46elks Voice API. These are the vendors' published prices for the job.", "question": "Which is cheaper for phone calls, 46elks Voice API or Twilio Programmable Voice API + MCP?" }, { "answer": "46elks Voice API needs an API key. Twilio Programmable Voice API + MCP takes an API key or an OAuth sign-in.", "question": "Do 46elks Voice API and Twilio Programmable Voice API + MCP need an API key?" }, { "answer": "Yes. 46elks Voice API has a hosted endpoint at https://api.46elks.com/a1 and Twilio Programmable Voice API + MCP at https://api.twilio.com/2010-04-01.", "question": "Can an agent call 46elks Voice API and Twilio Programmable Voice API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "European teams that want EU-resident calling and numbers with a simple REST API and a WebSocket bridge to an AI agent.", "slug": "46elks", "watchFor": "No changelog or dated API release found" }, { "aheadOn": [ "Reliability, 75 against 47", "Schema \u0026 documentation, 92 against 66", "Agent ergonomics, 80 against 51", "Security \u0026 auth, 85 against 40", "Payments \u0026 pricing, 40 against 20", "Maintenance \u0026 community, 85 against 12", "Transparency \u0026 trust, 81 against 62" ], "also": [ "Cheaper for phone calls, $0.0025 against $0.017 per minute of call", "Agent-ready, a grade of BB or better", "Runs on your own machine", "Free to start without a card" ], "goodFor": "Teams that want the widest number coverage and a managed speech layer (ConversationRelay) behind one vendor, or a published SLA.", "slug": "twilio-voice", "watchFor": "US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay" } ], "history": { "46elks": null, "twilio-voice": [ { "causes": [ "evidence" ], "date": "2026-10-17", "delta": -3, "from": 80.4, "fromGrade": "A", "to": 77.4, "toGrade": "BB" } ] }, "job": { "capability": "voice.calls", "name": "Phone calls" }, "others": [ { "json": "https://www.anchorterminal.com/compare/46elks-vs-bandwidth-voice.json", "title": "46elks Voice API vs Bandwidth Voice API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-bandwidth-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-didlogic.json", "title": "46elks Voice API vs didlogic Voice API", "url": "https://www.anchorterminal.com/compare/46elks-vs-didlogic" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-exotel-voice.json", "title": "46elks Voice API vs Exotel Voice API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-exotel-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-infobip-calls.json", "title": "46elks Voice API vs Infobip Calls API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-infobip-calls" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-jambonz.json", "title": "46elks Voice API vs jambonz", "url": "https://www.anchorterminal.com/compare/46elks-vs-jambonz" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-livekit-telephony.json", "title": "46elks Voice API vs LiveKit Telephony", "url": "https://www.anchorterminal.com/compare/46elks-vs-livekit-telephony" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-plivo-voice.json", "title": "46elks Voice API vs Plivo Voice API", "url": "https://www.anchorterminal.com/compare/46elks-vs-plivo-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-signalwire-voice.json", "title": "46elks Voice API vs SignalWire Voice API", "url": "https://www.anchorterminal.com/compare/46elks-vs-signalwire-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-sinch-voice.json", "title": "46elks Voice API vs Sinch Voice API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-sinch-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-telnyx-voice.json", "title": "46elks Voice API vs Telnyx Voice API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-telnyx-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-vonage-voice.json", "title": "46elks Voice API vs Vonage Voice API + MCP", "url": "https://www.anchorterminal.com/compare/46elks-vs-vonage-voice" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-voximplant.json", "title": "46elks Voice API vs Voximplant", "url": "https://www.anchorterminal.com/compare/46elks-vs-voximplant" }, { "json": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-twilio-voice.json", "title": "Bandwidth Voice API + MCP vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-twilio-voice.json", "title": "Exotel Voice API + MCP vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/infobip-calls-vs-twilio-voice.json", "title": "Infobip Calls API + MCP vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/infobip-calls-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/jambonz-vs-twilio-voice.json", "title": "jambonz vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/jambonz-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/livekit-telephony-vs-twilio-voice.json", "title": "LiveKit Telephony vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/livekit-telephony-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.json", "title": "Plivo Voice API vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/signalwire-voice-vs-twilio-voice.json", "title": "SignalWire Voice API vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/signalwire-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/sinch-voice-vs-twilio-voice.json", "title": "Sinch Voice API + MCP vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/sinch-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/telnyx-voice-vs-twilio-voice.json", "title": "Telnyx Voice API + MCP vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/telnyx-voice-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/twilio-voice-vs-vonage-voice.json", "title": "Twilio Programmable Voice API + MCP vs Vonage Voice API + MCP", "url": "https://www.anchorterminal.com/compare/twilio-voice-vs-vonage-voice" }, { "json": "https://www.anchorterminal.com/compare/twilio-voice-vs-voximplant.json", "title": "Twilio Programmable Voice API + MCP vs Voximplant", "url": "https://www.anchorterminal.com/compare/twilio-voice-vs-voximplant" }, { "json": "https://www.anchorterminal.com/compare/46elks-vs-didww-voice-and-number-management.json", "title": "46elks Voice API vs DIDWW Voice and Number Management API", "url": "https://www.anchorterminal.com/compare/46elks-vs-didww-voice-and-number-management" }, { "json": "https://www.anchorterminal.com/compare/didlogic-vs-twilio-voice.json", "title": "didlogic Voice API vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/didlogic-vs-twilio-voice" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-twilio-voice.json", "title": "DIDWW Voice and Number Management API vs Twilio Programmable Voice API + MCP", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-twilio-voice" } ], "panel": null, "scores": [ { "46elks": 47, "by": 28, "edge": "twilio-voice", "key": "reliability", "name": "Reliability", "twilio-voice": 75, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "46elks": 66, "by": 26, "edge": "twilio-voice", "key": "schema", "name": "Schema \u0026 documentation", "twilio-voice": 92, "weight": 13 }, { "46elks": 51, "by": 29, "edge": "twilio-voice", "key": "ergonomics", "name": "Agent ergonomics", "twilio-voice": 80, "weight": 13 }, { "46elks": 40, "by": 45, "edge": "twilio-voice", "key": "security", "name": "Security \u0026 auth", "twilio-voice": 85, "weight": 14 }, { "46elks": 20, "by": 20, "edge": "twilio-voice", "key": "payments", "name": "Payments \u0026 pricing", "twilio-voice": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "46elks": 12, "by": 73, "edge": "twilio-voice", "key": "maintenance", "name": "Maintenance \u0026 community", "twilio-voice": 85, "weight": 7 }, { "46elks": 62, "by": 19, "edge": "twilio-voice", "key": "transparency", "name": "Transparency \u0026 trust", "twilio-voice": 81, "weight": 7 } ], "summary": "Twilio Programmable Voice API + MCP scores 77.4 (BB) on agent readiness against 46elks Voice API's 44.4 (E), and leads in every scored category. Both do phone calls. Twilio Programmable Voice API + MCP is cheaper for phone calls, $0.0025 against $0.017 per minute of call.", "tasks": null, "tutorials": [], "verdicts": { "46elks": "46elks publishes per-minute prices, an agent-oriented llms.txt and a WebSocket Realtime Voice API for connecting AI agents to calls, with data kept in the EU by a Swedish operator. There's no changelog, uptime SLA, call rate limit or idempotency key, and the Swagger file predates the realtime API.", "twilio-voice": "Twilio APIs SLA at 99.95 per cent for every paying customer, with 10 per cent credits. US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/46elks-vs-twilio-voice", "json": "https://www.anchorterminal.com/compare/46elks-vs-twilio-voice.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/46elks-vs-twilio-voice.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/46elks-vs-twilio-voice.min.md" }, "markdown": "Twilio Programmable Voice API + MCP scores 77.4 (BB) on agent readiness against 46elks Voice API's 44.4 (E), and leads in every scored category. Both do phone calls. Twilio Programmable Voice API + MCP is cheaper for phone calls, $0.0025 against $0.017 per minute of call.\n\n- 46elks Voice API: grade E, 44.4/100, rank #1203 of 1486. Markdown https://www.anchorterminal.com/tools/46elks.md · JSON https://www.anchorterminal.com/api/v1/tools/46elks.json\n- Twilio Programmable Voice API + MCP: grade BB, 77.4/100, rank #31 of 1486. Markdown https://www.anchorterminal.com/tools/twilio-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/twilio-voice.json\n- Best phone calling and voice transport APIs for AI agents: https://www.anchorterminal.com/best/voice-calling/index.md\n- All 105 calling comparisons: https://www.anchorterminal.com/compare/voice-calling/index.md\n\n## Which one, for what\n\n### 46elks Voice API (E)\n\nGood for: European teams that want EU-resident calling and numbers with a simple REST API and a WebSocket bridge to an AI agent.\n\nWatch for: No changelog or dated API release found\n\n### Twilio Programmable Voice API + MCP (BB)\n\nGood for: Teams that want the widest number coverage and a managed speech layer (ConversationRelay) behind one vendor, or a published SLA.\n\nAhead on:\n- Reliability, 75 against 47\n- Schema \u0026 documentation, 92 against 66\n- Agent ergonomics, 80 against 51\n- Security \u0026 auth, 85 against 40\n- Payments \u0026 pricing, 40 against 20\n- Maintenance \u0026 community, 85 against 12\n- Transparency \u0026 trust, 81 against 62\n\nAlso in its favour:\n- Cheaper for phone calls, $0.0025 against $0.017 per minute of call\n- Agent-ready, a grade of BB or better\n- Runs on your own machine\n- Free to start without a card\n\nWatch for: US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay\n\n\n## Why the edge\n\n### Maintenance \u0026 community: Twilio Programmable Voice API + MCP +73\n\n- 46elks Voice API (12): No changelog, release notes or dated API change was found, the sitemap's newest blog post is from 2014, and the Swagger file predates Realtime Voice (0). No dated changes in the 90 days from 8 August (0). Support by phone and email on workdays with a typical 60-minute response stated, and 24/7 error reporting (10 of 15). No official SDK (0). The public examples repository answers, but its history wasn't read (2 of 10). 0+0+10+0+2 = 12.\n- Twilio Programmable Voice API + MCP (85): twilio-node 6.2.0 tagged on 2026-10-12, still the newest tag on 1 November, 20 days old (30). Releases 6.1.0, 6.1.1, 6.1.2 and 6.2.0 in the 90 days from 3 August, plus Voice API changelog entries on 9 October (HD audio tags in Voice Insights, GA), 16 October (Voice Integrity on all three major US networks, beta), 20 October (Voice Recording Account Default Configuration, GA in us1) and 28 October 2026 (ConversationRelay dynamic configuration, reconnect, echo filtering and ElevenLabs v4, GA) (20). Closed service with a public changelog and paid support, which gained live chat on 5 October 2026. The twilio-labs/mcp repo has had no commit since v0.7.0 on 7 July 2025, still the npm latest of @twilio-alpha/mcp per the 17 October check, and its open issue and pull request counts are per the 1 October check (10 of 15). Official SDKs current in seven languages (15). twilio-node needs Node 20 or later, so dependencies are current (10).\n\n### Security \u0026 auth: Twilio Programmable Voice API + MCP +45\n\n- 46elks Voice API (40): HTTP Basic credentials per account, with separate credentials per subaccount and no scopes found (18 of 30). Subaccounts separate traffic, with no read-only credential or confirmation for paid actions (6 of 20). Callers' speech, DTMF and SMS replies reach the agent as untrusted input. The docs show how to verify callback origin, with no prompt-injection guidance (5 of 15). Call, SMS and recording history through the API for 90 days (8 of 15). A registered Swedish telecom operator, but no security.txt (404), disclosure policy, bug bounty or certification was found (3 of 20). 18+6+5+8+3 = 40.\n- Twilio Programmable Voice API + MCP (85): API keys come as standard, main or restricted. Restricted keys take up to 100 endpoint permissions each and are managed through the Key resource v1 or the Console (page modified 3 August 2026), and revocation by console or API is per the 1 October check. No documented option to send a secret in a query string (30). Restricted keys can leave out endpoints such as call recordings, but no MCP has a confirmation step for dialling or buying numbers (15 of 20). Calls carry untrusted caller speech. Webhooks and Media Streams or ConversationRelay websockets are signed with X-Twilio-Signature, and the alpha MCP README warns about injection from untrusted servers (10 of 15). The Monitor Events API keeps an audit trail of account changes, and every call has a log resource (15). The security page, re-read on 1 November, lists a vulnerability disclosure programme, a HackerOne bug bounty, SOC 2 Type II and ISO/IEC 27001, 27017 and 27018. No security.txt (twilio.com/.well-known/security.txt returns 404 on 1 November). twilio-node has no SECURITY.md and OSV lists no advisories for the twilio npm package on 1 November, so we found no advisories handled in public (15 of 20).\n\n### Agent ergonomics: Twilio Programmable Voice API + MCP +29\n\n- 46elks Voice API (51): Compact JSON responses, and call actions returned as small JSON objects (18 of 25). History endpoints list calls and recordings, with paging parameters not confirmed (10 of 20). Errors carry `error` and `detail` (12 of 20). No idempotency key on `POST /calls` or number allocation (3 of 20). Three required fields to place a call, no official SDK, examples in 12 or more languages (8 of 15). 18+10+12+3+8 = 51.\n- Twilio Programmable Voice API + MCP (80): List resources take PageSize (up to 1,000) and PageToken and return next_page_uri, with no field selection (15 of 25). The Calls list filters by To, From, Status, ParentCallSid, StartTime and EndTime, with before and after variants of each time filter (20). Numbered error codes with causes and fixes an agent can act on (20). No idempotency key on call creation. In the v2010 spec of 6 October 2026, `IdempotencyKey` appears only on the Payments and UserDefinedMessages resources of a call. The docs say a 429 is safe to retry, and webhooks carry an I-Twilio-Idempotency-Token for de-duplication (10 of 20). A call needs only To, From and one of Url, Twiml or ApplicationSid, and official SDKs exist in seven languages (15).\n\n### Reliability: Twilio Programmable Voice API + MCP +28\n\n- 46elks Voice API (47): Graded on the hosted REST and Realtime Voice APIs with the hosted lines. A status page exists, linked from 46elks.com/status on UptimeRobot (20). It draws its data by script from a path its robots.txt disallows, so no history was readable (5). SMS sending speed is documented in the FAQ, but no limit for calls, numbers or WebSocket sessions was found (5 of 15). llms.txt says to retry 5xx with exponential backoff and not to retry 4xx unchanged, with no Retry-After or idempotency for `POST /calls` (7 of 15). The SLA page commits to support hours and 24/7 error reporting with no uptime figure, and extended SLAs are by sales (0). Voice and Realtime Voice carry no beta label (10). 20+5+5+7+0+10 = 47.\n- Twilio Programmable Voice API + MCP (75): Status page at status.twilio.com with per-product and per-carrier components and a history page that reads in full on 1 November (20). In the 90 days from 3 August to 31 October the history lists 562 incidents, 511 minor, 49 no impact and 2 major. Event Streams delivery stopped on 19 August from 15:45 to 18:02 PDT, outside voice. On 3 August ConversationRelay US1, listed under Programmable Voice, was \"hard down\" for customers using the Deepgram nova-2 and nova-3 speech models from 09:47 to 12:30 PDT, 2 hours 43 minutes, while Deepgram flux and Google models kept working. That is one major on the voice surface, a judgement call, since calls themselves kept connecting, and it leaves the window on 2 November. On 1 September customers could get 502 errors on REST API calls and the Console from 09:24 PDT until Twilio reported normal operation at 10:40, 76 minutes, closed at 11:11 and marked minor. Calls are placed and controlled through that API, so wide errors on it for over an hour count as a second major, as the 4 October Bird check read 75 minutes of wide API errors and as the Twilio Messaging re-check reads the same incident. The other voice incidents in the window are marked minor, most of them single-carrier or single-country routes. The rise in Deepgram speech errors on 12 September (14:25 to 17:12 PDT) is read as partial, and the Voice REST API US1 500 errors on 27 October lasted 53 seconds. Two majors fall between the one-major and several-majors lines (5). A reading that counts only call placement would give 10. Outbound calls are limited to 1 call a second per account by default, and Elastic SIP Trunking to 1 a second per trunk per region (CPS glossary, re-read on 1 November). Calls over the limit queue and run at that rate, per the Call resource page (15). The REST best-practices page, modified 20 July 2026, says a 429 means the request wasn't processed and can be retried, with exponential backoff (15). The Twilio APIs SLA, last updated 9 April 2026, commits 99.95 per cent to paying customers and 99.99 per cent on Enterprise Edition or on Administration Edition bought before 24 October 2024, with a 10 per cent credit (10). Programmable Voice is generally available (10). 20+5+15+15+10+10 = 75.\n\n### Schema \u0026 documentation: Twilio Programmable Voice API + MCP +26\n\n- 46elks Voice API (66): A Swagger 2.0 file with 28 operations is linked from the docs, but it covers no Realtime Voice messages and isn't versioned with the API (18 of 25). An llms.txt written for agents, with a task-to-endpoint table and webhook payloads, while docs pages are HTML (10). Each docs page explains parameters and when webhooks fire, such as `voice_start` loading only once a call connects (14 of 20). Form-encoded parameters with types in the Swagger file and few enums (9 of 15). Examples in many languages and a JSON error shape, with no error list (10 of 15). The `/a1/` path, with no changelog found (5 of 15). 18+10+14+9+10+5 = 66.\n- Twilio Programmable Voice API + MCP (92): Public OpenAPI specs in the twilio-oai repository, including twilio_api_v2010 for calls, last regenerated on 6 October 2026 (25). llms.txt with Markdown twins of the docs, 383,795 bytes and last modified 31 October 2026, and a hosted docs MCP in public beta at mcp.twilio.com/docs that searches over 1,800 endpoints (10). The API reference and TwiML pages say when to use Stream for raw audio and ConversationRelay for text only (15 of 20). Typed parameters with enums from the spec, though calls take form-encoded fields (12 of 15). Code samples in every SDK language and a numbered error and warning dictionary (15). API version in the path (2010-04-01) and a public changelog with dated voice entries on 9, 16, 20 and 28 October 2026 (15).\n\n### Payments \u0026 pricing: Twilio Programmable Voice API + MCP +20\n\n- 46elks Voice API (20): No x402, MPP or L402 (0). Per-minute prices by destination are public without login, also in kronor, with incoming calls free (20). No free credit; only SMS to the test number +46700000000 costs nothing, and accounts are prepaid or invoiced against a deposit (0). A person signs up in a browser and copies the credentials (0). 0+20+0+0 = 20.\n- Twilio Programmable Voice API + MCP (40): No x402, MPP or L402 on the pricing page or the docs MCP page (0). US per-minute rates for calls, numbers, Media Streams, ConversationRelay, recording and SIP published without a login, re-read on 1 November (20). Free trial without a card, with free units including 75 voice minutes for 30 days, per the trial doc modified 25 September 2026. The US voice pricing page still describes the trial as $15 of credit to buy a phone number and try Voice (20). A person has to sign up in a browser and verify a phone number (0).\n\n## Score by category\n\n| Category | Weight | 46elks Voice API | Twilio Programmable Voice API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 47 | 75 | Twilio Programmable Voice API + MCP +28 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 66 | 92 | Twilio Programmable Voice API + MCP +26 |\n| Agent ergonomics | 13% (16.2 this run) | 51 | 80 | Twilio Programmable Voice API + MCP +29 |\n| Security \u0026 auth | 14% (17.5 this run) | 40 | 85 | Twilio Programmable Voice API + MCP +45 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Twilio Programmable Voice API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 12 | 85 | Twilio Programmable Voice API + MCP +73 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 62 | 81 | Twilio Programmable Voice API + MCP +19 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **44.4 · E** | **77.4 · BB** | |\n\n## Facts side by side\n\n| Fact | 46elks Voice API | Twilio Programmable Voice API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | 46elks AB | Twilio |\n| Hosted endpoint | `https://api.46elks.com/a1` | `https://api.twilio.com/2010-04-01` |\n| Transports | HTTP, websocket | HTTP, Streamable HTTP, stdio |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| Price for phone calls | $0.017 per minute of call | $0.0025 per minute of call |\n| x402 | no | no |\n| Licence | Proprietary service under the 46elks Terms of Service (effective 12 March 2024). Example code and the Swagger file are in the public 46elks-getting-started repository | MIT |\n| Tools exposed | none | 2 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | none | 2026-10-12 |\n| Terms last updated | 2024-03-12 | 2026-07-16 |\n| Privacy policy last updated | 2018-05-20 | 2026-04-09 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | none | 111 stars, 7.2M npm/wk, 4.8M PyPI/wk |\n| Agent reviews | none | 3.1/5 (8) |\n\n## How the scores have moved\n\n### 46elks Voice API\n\nNo score change since it was listed.\n\n### Twilio Programmable Voice API + MCP\n\n- -3.0 on 17 October 2026 (A to BB): new evidence\n\n## Verdicts\n\n**46elks Voice API.** 46elks publishes per-minute prices, an agent-oriented llms.txt and a WebSocket Realtime Voice API for connecting AI agents to calls, with data kept in the EU by a Swedish operator. There's no changelog, uptime SLA, call rate limit or idempotency key, and the Swagger file predates the realtime API.\n\n**Twilio Programmable Voice API + MCP.** Twilio APIs SLA at 99.95 per cent for every paying customer, with 10 per cent credits. US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay.\n\n## Before you call either\n\n### 46elks Voice API\n\n1. Send numbers in E.164 format, such as +46700000000, or the request fails\n2. Pass `whenhangup` on `POST /calls` to learn when a call ends or fails to connect\n3. Don't retry a call request on a 4xx; retry 5xx with backoff, and check call history first to avoid a second call\n4. Treat caller speech, DTMF and SMS replies as untrusted input, and verify webhook origin\n5. Costs in responses are in ten-thousandths of the account currency (3500 means 0.35)\n\n### Twilio Programmable Voice API + MCP\n\n1. Use `\u003cConnect\u003e\u003cStream\u003e` for two-way audio. It blocks further TwiML until the websocket closes\n2. Use `\u003cConnect\u003e\u003cConversationRelay\u003e` when you only want to handle text, set `interruptible` for barge-in, and keep a second speech provider configured\n3. Trial calls reach only verified numbers in your sign-up country\n4. Retry a 429 with backoff, but check the Calls list before retrying a create that timed out, since there's no idempotency key\n5. Validate `X-Twilio-Signature` on every webhook and websocket upgrade\n\n## Questions\n\n### Which is better for AI agents, 46elks Voice API or Twilio Programmable Voice API + MCP?\n\nTwilio Programmable Voice API + MCP scores 77.4 (BB) on agent readiness against 46elks Voice API's 44.4 (E), and leads in every scored category.\n\n### Which is cheaper for phone calls, 46elks Voice API or Twilio Programmable Voice API + MCP?\n\nTwilio Programmable Voice API + MCP, at $0.0025 per minute of call against $0.017 per minute of call for 46elks Voice API. These are the vendors' published prices for the job.\n\n### Do 46elks Voice API and Twilio Programmable Voice API + MCP need an API key?\n\n46elks Voice API needs an API key. Twilio Programmable Voice API + MCP takes an API key or an OAuth sign-in.\n\n### Can an agent call 46elks Voice API and Twilio Programmable Voice API + MCP without installing anything?\n\nYes. 46elks Voice API has a hosted endpoint at https://api.46elks.com/a1 and Twilio Programmable Voice API + MCP at https://api.twilio.com/2010-04-01.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/46elks-vs-twilio-voice.json, and with the fewest tokens: https://www.anchorterminal.com/compare/46elks-vs-twilio-voice.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"46elks\", \"b\": \"twilio-voice\"}`. From a terminal: `anchor compare 46elks twilio-voice`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/46elks.json and https://www.anchorterminal.com/api/v1/tools/twilio-voice.json\n\n## Other comparisons with 46elks Voice API or Twilio Programmable Voice API + MCP\n\n- [46elks Voice API vs Bandwidth Voice API + MCP](https://www.anchorterminal.com/compare/46elks-vs-bandwidth-voice.md)\n- [46elks Voice API vs didlogic Voice API](https://www.anchorterminal.com/compare/46elks-vs-didlogic.md)\n- [46elks Voice API vs Exotel Voice API + MCP](https://www.anchorterminal.com/compare/46elks-vs-exotel-voice.md)\n- [46elks Voice API vs Infobip Calls API + MCP](https://www.anchorterminal.com/compare/46elks-vs-infobip-calls.md)\n- [46elks Voice API vs jambonz](https://www.anchorterminal.com/compare/46elks-vs-jambonz.md)\n- [46elks Voice API vs LiveKit Telephony](https://www.anchorterminal.com/compare/46elks-vs-livekit-telephony.md)\n- [46elks Voice API vs Plivo Voice API](https://www.anchorterminal.com/compare/46elks-vs-plivo-voice.md)\n- [46elks Voice API vs SignalWire Voice API](https://www.anchorterminal.com/compare/46elks-vs-signalwire-voice.md)\n- [46elks Voice API vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/46elks-vs-sinch-voice.md)\n- [46elks Voice API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/46elks-vs-telnyx-voice.md)\n- [46elks Voice API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/46elks-vs-vonage-voice.md)\n- [46elks Voice API vs Voximplant](https://www.anchorterminal.com/compare/46elks-vs-voximplant.md)\n- [Bandwidth Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-twilio-voice.md)\n- [Exotel Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-twilio-voice.md)\n- [Infobip Calls API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/infobip-calls-vs-twilio-voice.md)\n- [jambonz vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/jambonz-vs-twilio-voice.md)\n- [LiveKit Telephony vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/livekit-telephony-vs-twilio-voice.md)\n- [Plivo Voice API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.md)\n- [SignalWire Voice API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/signalwire-voice-vs-twilio-voice.md)\n- [Sinch Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/sinch-voice-vs-twilio-voice.md)\n- [Telnyx Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/telnyx-voice-vs-twilio-voice.md)\n- [Twilio Programmable Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/twilio-voice-vs-vonage-voice.md)\n- [Twilio Programmable Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/twilio-voice-vs-voximplant.md)\n- [46elks Voice API vs DIDWW Voice and Number Management API](https://www.anchorterminal.com/compare/46elks-vs-didww-voice-and-number-management.md)\n- [didlogic Voice API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/didlogic-vs-twilio-voice.md)\n- [DIDWW Voice and Number Management API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-twilio-voice.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "46elks Voice API vs Twilio Programmable Voice API + MCP", "url": "" } ], "description": "Twilio Programmable Voice scores 77.4 (BB) to 46elks Voice's 44.4 (E) for phone calls. Twilio Programmable Voice is cheaper for phone calls, $0.0025 against $0.017 per minute of call. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "46elks Voice API E 44.4", "Twilio Programmable Voice API + MCP BB 77.4", "scores" ], "h1": "46elks Voice API vs Twilio Programmable Voice API + MCP", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/46elks-vs-twilio-voice", "published": "2026-10-01", "section": "tools", "title": "46elks Voice vs Twilio Programmable Voice for AI agents (2026)", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/46elks-vs-twilio-voice" }, "tokens": { "markdown": 5500, "slim": 3330 }, "version": 1 }