{ "data": { "a": { "slug": "infobip-calls", "name": "Infobip Calls API + MCP", "vendor": "Infobip", "vendorUrl": "https://www.infobip.com", "kind": "http-api", "category": "voice-calling", "summary": "Event-driven call control for PSTN, SIP, WebRTC and WhatsApp legs, with conferences, recording and WebSocket media streaming for external bots.", "url": "https://www.anchorterminal.com/tools/infobip-calls", "markdownUrl": "https://www.anchorterminal.com/tools/infobip-calls.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/infobip-calls.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/infobip-calls.json", "repo": "https://github.com/infobip/mcp", "license": "MIT", "transports": [ "http", "streamable-http", "sse" ], "remoteUrl": "https://api.infobip.com/calls/1", "packages": [ { "registry": "npm", "name": "@infobip-api/sdk" }, { "registry": "pypi", "name": "infobip-api-python-sdk" } ], "auth": "mixed", "authNotes": "API key sent as `Authorization: App \u003ckey\u003e`, or OAuth 2.0. Each account has its own base URL at \u003csubdomain\u003e.api.infobip.com. The Voice MCP accepts OAuth 2.1 with discovery or the same App key header.", "pricing": "usage", "pricingNotes": "Pay as you go with a free trial. The voice calculator gives US outbound at about $0.0672 a minute and inbound at $0.022. Add-ons are priced in euros, recording €0.0021 a minute, audio streaming €0.002 a minute, conferences €0.0016 per participant per minute, machine detection €0.008 a request and neural TTS €0.00002 a character (https://www.infobip.com/voice/pricing).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or stablecoin payment path in the voice docs, pricing or llms.txt (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 36, "npmWeekly": 17770, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://www.infobip.com/docs/voice-and-video/calls", "llmsTxt": "https://www.infobip.com/docs/llms.txt", "openapi": "https://api.infobip.com/platform/1/openapi", "registryName": "com.infobip/mcp", "capabilities": [ "voice.calls", "voice.numbers", "voice.streaming", "voice.sip", "voice.recording", "voice.transfer" ], "tags": [ "hosted", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks", "streaming", "enterprise" ], "graded": true, "anchor": { "graded": true, "score": 60.5, "grade": "C", "agentReady": false, "rank": 246, "ranked": true, "rankOf": 452, "categoryRank": 6, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 50, "maintenance": 48, "payments": 30, "reliability": 58, "schema": 90, "security": 65, "transparency": 78 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "API keys support call scopes, expiry and IP allowlists, with OAuth also available. US outbound calls cost about $0.067 a minute.", "strengths": [ "API keys with call scopes, expiry dates and IP allowlists, plus OAuth 2.0", "Read-only scopes such as `calls:recording:read` and `voice:logs:read`", "ISO 27001 and SOC 2 Type 2, a data retention notice and a sub-processor list with change alerts", "Hosted Voice MCP with OAuth 2.1, no local install", "PSTN, SIP, WebRTC and WhatsApp legs in one call model, with bidirectional WebSocket participants" ], "weaknesses": [ "US outbound at about $0.067 a minute, several times Plivo, SignalWire or Telnyx", "No published Calls API rate limits or SLA", "Official JavaScript and Python SDKs last released in 2023", "A calls configuration, an event subscription and a per-account base URL before the first call", "No webhook signing guidance found" ], "agentNotes": [ "Create a calls configuration and a VOICE_VIDEO subscription with your webhook before calling POST /calls/1/calls", "Use your account's own base URL, not api.infobip.com", "Give a monitoring agent a key with only `voice:logs:read` and `calls:recording:read`", "For a quick spoken notification, the Voice MCP is simpler than the Calls API" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 60.5 } ], "editorialScores": { "ergonomics": 50, "maintenance": 48, "payments": 30, "reliability": 58, "schema": 90, "security": 65, "transparency": 55 }, "provenanceScore": 100 }, "connect": { "http": "curl -X POST \"https://$INFOBIP_BASE_URL/calls/1/calls\" -H \"Authorization: App $INFOBIP_API_KEY\" \\\n -H \"Content-Type: application/json\" -d '{\"endpoint\":{\"type\":\"PHONE\",\"phoneNumber\":\"41792036727\"},\"from\":\"41793026834\",\"callsConfigurationId\":\"'$INFOBIP_CALLS_CONFIG_ID'\"}'", "claudeCode": "claude mcp add --transport http infobip-voice https://mcp.infobip.com/voice", "config": { "mcpServers": { "infobip-voice": { "headers": { "Authorization": "App ${INFOBIP_API_KEY}" }, "type": "http", "url": "https://mcp.infobip.com/voice" } } } }, "letme": { "capability": "https://letme.dev/voice.calls", "tool": "https://letme.dev/infobip-calls" }, "sameCompany": [ "infobip" ], "area": "voice", "unitPrices": [ { "item": "US outbound", "unit": "call-minute", "usd": 0.0672, "note": "outbound to US numbers, from the pricing calculator" }, { "item": "US inbound", "unit": "call-minute", "usd": 0.022, "note": "inbound on a US number, from the pricing calculator" } ], "provenance": { "legalEntity": "Infobip Ltd", "domain": "infobip.com", "domainRegistered": "2003-10-16", "endpointOnVendorDomain": true, "terms": "https://www.infobip.com/policies/service-terms-conditions", "privacy": "https://www.infobip.com/policies/privacy-notice", "statusPage": "https://status.infobip.com", "changelog": "https://www.infobip.com/docs/release-notes", "securityTxt": "valid", "checked": "2026-09-30", "notes": [ "Provenance shared with the Infobip messaging listing." ], "score": 100 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/infobip-calls.json", "live": { "slug": "infobip-calls", "probe": { "target": "https://api.infobip.com/calls/1", "method": "get", "lastAt": "2026-10-04T23:48:09.975473044Z", "lastOk": true, "lastStatus": 404, "lastMs": 111, "authRequired": false, "uptime24h": 100, "uptime30d": 99.18, "p50ms24h": 119, "p95ms24h": 147, "samples24h": 272, "samples30d": 1100, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 270 }, { "date": "2026-10-02", "probes": 248, "ok": 247 }, { "date": "2026-10-03", "probes": 271, "ok": 269 }, { "date": "2026-10-04", "probes": 270, "ok": 270 } ] }, "vendorStatus": { "page": "https://status.infobip.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:49:17.044833447Z" }, "versions": [ { "registry": "npm", "name": "@infobip-api/sdk", "version": "0.3.2", "seenAt": "2026-10-04T16:30:09.293062476Z" }, { "registry": "pypi", "name": "infobip-api-python-sdk", "version": "5.0.1", "released": "2023-05-26", "seenAt": "2026-10-04T16:30:09.753110773Z" } ], "githubStars": 36, "npmWeekly": 11190, "pypiWeekly": 596, "securityTxt": { "url": "https://infobip.com/.well-known/security.txt", "state": "valid", "expires": "2030-01-01T00:00:00.000Z", "checkedAt": "2026-10-04T15:15:56.496317143Z" }, "llmsTxt": { "url": "https://www.infobip.com/docs/llms.txt", "ok": false, "status": 404, "checkedAt": "2026-10-04T15:17:54.644593118Z" }, "domain": { "domain": "infobip.com", "registered": "2003-10-16", "source": "https://rdap.verisign.com/com/v1/domain/infobip.com", "checkedAt": "2026-10-04T13:06:32.73892323Z" }, "pages": [ { "url": "https://www.infobip.com/docs/release-notes", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:50:46.698955282Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0e41c8aee7d5" }, { "url": "https://www.infobip.com/voice/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:50:54.795582642Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fdabc9864a44" }, { "url": "https://www.infobip.com/policies/privacy-notice", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:50:48.792520673Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b012bc2db114" }, { "url": "https://www.infobip.com/policies/service-terms-conditions", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:50:50.734937489Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e788a44fe608" } ], "updatedAt": "2026-10-04T23:49:17.044833447Z" } }, "b": { "slug": "vonage-voice", "name": "Vonage Voice API + MCP", "vendor": "Vonage (Ericsson)", "vendorUrl": "https://www.vonage.com", "kind": "http-api", "category": "voice-calling", "summary": "Voice API that controls calls with NCCO, a JSON list of actions such as talk, input, record, connect and transfer.", "url": "https://www.anchorterminal.com/tools/vonage-voice", "markdownUrl": "https://www.anchorterminal.com/tools/vonage-voice.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vonage-voice.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vonage-voice.json", "transports": [ "http", "stdio", "streamable-http" ], "remoteUrl": "https://api.nexmo.com/v1", "packages": [ { "registry": "npm", "name": "@vonage/server-sdk" }, { "registry": "pypi", "name": "vonage" }, { "registry": "npm", "name": "@vonage/vonage-mcp-server-api-bindings" } ], "auth": "mixed", "authNotes": "The Voice API takes a Vonage Application JWT signed RS256 with the application's private key. Signed webhooks carry an HS256 JWT to verify with the signature secret. The MCP server reads the API key, secret, application ID and a base64 private key from env vars.", "pricing": "usage", "pricingNotes": "Pay as you go, billed per second. US outbound $0.01446 a minute, inbound $0.00495 on local numbers and $0.0154 on toll-free. Calls to or from SIP, in-app (WebRTC) and websocket endpoints $0.00492 a minute. US numbers €1.81 a month. New accounts get test credit with no card. Rates are from Vonage's downloadable pricing sheet, since the pricing page blocks automated requests (https://www.vonage.com/communications-apis/voice/pricing/).", "priceSummary": "Pay per use", "where": "both", "x402": { "level": "no", "evidence": "No x402 support in docs, pricing or MCP README (checked 2026-09-30).", "endpoints": [] }, "toolCount": 14, "popularity": { "githubStars": null, "npmWeekly": 154249, "pypiWeekly": 67062, "asOf": "2026-09-30" }, "docsUrl": "https://developer.vonage.com/en/voice/voice-api/overview", "llmsTxt": "https://developer.vonage.com/llms.txt", "openapi": "https://developer.vonage.com/api/v1/developer/api/file/voice?format=json", "registryName": "io.github.Vonage/vonage-documentation-mcp", "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": "2026-09-16", "graded": true, "anchor": { "graded": true, "score": 59.1, "grade": "C", "agentReady": false, "rank": 270, "ranked": true, "rankOf": 452, "categoryRank": 8, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 78, "payments": 35, "reliability": 45, "schema": 88, "security": 60, "transparency": 50 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "low", "date": "2026-10-01" }, "negative": 0, "verdict": "Websocket audio as 16-bit linear PCM at 8, 16 or 24 kHz, both directions. First call needs an application, a private key and a signed JWT.", "strengths": [ "Websocket audio as 16-bit linear PCM at 8, 16 or 24 kHz, both directions", "Per-second billing on every call", "Short-lived application JWTs whose ACLs can limit a token to named paths and methods, and signed webhooks with a body hash", "OpenAPI spec and an llms.txt that tells agents which hosts to use", "€2 test credit without a card" ], "weaknesses": [ "First call needs an application, a private key and a signed JWT", "No Voice API rate limit or SLA found, and the error catalogue's throttling advice is to wait an amount that differs per API", "Pricing page returns 403 to automated requests, rates live in a spreadsheet", "MCP server has no tools for live call control, only a one-way voice message", "No security.txt, and the API runs on the legacy nexmo.com domain" ], "agentNotes": [ "Generate a short-lived JWT with an ACL limited to the call paths the agent needs, and keep the private key out of prompts", "Use a `connect` action with a websocket endpoint and `audio/l16;rate=16000` for speech models", "Keep the api.nexmo.com hostname, Vonage's llms.txt says not to swap it", "Enable signed webhooks and verify the HS256 JWT on each event", "Expect RFC 7807 errors (`type`, `title`, `detail`, `instance`) and back off on a throttling error, since no Voice rate limit is published" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "low", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 59.1 } ], "editorialScores": { "ergonomics": 60, "maintenance": 78, "payments": 35, "reliability": 45, "schema": 88, "security": 60, "transparency": 25 }, "provenanceScore": 75 }, "connect": { "http": "curl -X POST https://api.nexmo.com/v1/calls -H \"Authorization: Bearer $VONAGE_JWT\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"to\":[{\"type\":\"phone\",\"number\":\"14155550100\"}],\"from\":{\"type\":\"phone\",\"number\":\"14155550101\"},\"ncco\":[{\"action\":\"talk\",\"text\":\"Hello from Vonage\"}]}'", "claudeCode": "claude mcp add --transport http vonage-docs https://documentation-mcp.vonage.dev/mcp", "config": { "mcpServers": { "vonage": { "args": [ "-y", "@vonage/vonage-mcp-server-api-bindings" ], "command": "npx", "env": { "VONAGE_API_KEY": "${VONAGE_API_KEY}", "VONAGE_API_SECRET": "${VONAGE_API_SECRET}", "VONAGE_APPLICATION_ID": "${VONAGE_APPLICATION_ID}", "VONAGE_PRIVATE_KEY64": "${VONAGE_PRIVATE_KEY64}", "VONAGE_VIRTUAL_NUMBER": "${VONAGE_VIRTUAL_NUMBER}" } } } } }, "letme": { "capability": "https://letme.dev/voice.calls", "tool": "https://letme.dev/vonage-voice" }, "sameCompany": [ "vonage" ], "area": "voice", "unitPrices": [ { "item": "Outbound call, US", "unit": "call-minute", "usd": 0.01446, "note": "billed per second" }, { "item": "Inbound call, US local number", "unit": "call-minute", "usd": 0.00495, "note": "billed per second" }, { "item": "Inbound call, US toll-free number", "unit": "call-minute", "usd": 0.0154 }, { "item": "Websocket, SIP or in-app leg", "unit": "call-minute", "usd": 0.00492 } ], "provenance": { "legalEntity": "Vonage Holdings Corp.", "domain": "vonage.com", "domainRegistered": "2000-12-12", "domainNote": "The API endpoints sit on the legacy nexmo.com domain, from Nexmo's acquisition in 2016.", "endpointOnVendorDomain": false, "terms": "https://www.vonage.com/legal/communications-apis/terms-of-use/", "privacy": "https://www.vonage.com/legal/privacy-policy/", "statusPage": "https://vonageapi.statuspage.io", "changelog": "https://developer.vonage.com/en/changelogs", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The privacy notice names Vonage Holdings Corp. as controller where one entity applies. The API terms set the contracting entity by customer region in Schedule 1, which we couldn't read because vonage.com returned 403 to automated requests." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/vonage-voice.json", "live": { "slug": "vonage-voice", "probe": { "target": "https://api.nexmo.com/v1", "method": "get", "lastAt": "2026-10-04T23:48:18.247985427Z", "lastOk": true, "lastStatus": 404, "lastMs": 65, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 56, "p95ms24h": 89, "samples24h": 272, "samples30d": 1100, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 270, "ok": 270 } ] }, "vendorStatus": { "page": "https://vonageapi.statuspage.io", "indicator": "minor", "summary": "Partially Degraded Service", "checkedAt": "2026-10-04T23:49:30.565255796Z" }, "versions": [ { "registry": "npm", "name": "@vonage/server-sdk", "version": "3.30.1", "seenAt": "2026-10-04T16:43:40.029661946Z" }, { "registry": "npm", "name": "@vonage/vonage-mcp-server-api-bindings", "version": "1.5.1", "seenAt": "2026-10-04T16:43:42.417836886Z" }, { "registry": "pypi", "name": "vonage", "version": "4.9.0", "released": "2026-09-16", "seenAt": "2026-10-04T16:43:42.228896026Z" } ], "npmWeekly": 152256, "pypiWeekly": 69501, "securityTxt": { "url": "https://vonage.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:53.518357179Z" }, "llmsTxt": { "url": "https://developer.vonage.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:21.395540221Z" }, "domain": { "domain": "vonage.com", "registered": "2000-12-12", "source": "https://rdap.verisign.com/com/v1/domain/vonage.com", "checkedAt": "2026-10-04T13:04:15.703583171Z" }, "pages": [ { "url": "https://developer.vonage.com/en/changelogs", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:39.187027625Z", "changedAt": "2026-10-02T15:19:02.626368872Z", "fingerprint": "81bb42dd9db6" }, { "url": "https://www.vonage.com/communications-apis/voice/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:52:50.243045792Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "efeb31a58cfc" }, { "url": "https://www.vonage.com/legal/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:52:54.218403359Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ef11a28348cd" }, { "url": "https://www.vonage.com/legal/communications-apis/terms-of-use/", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:52:52.203108406Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "004c80c35ffa" } ], "updatedAt": "2026-10-04T23:49:30.565255796Z" } }, "summary": "Infobip Calls API + MCP has a score of 60.5 (C) against Vonage Voice API + MCP's 59.1 (C). Both do voice calls. The largest gap is maintenance \u0026 community, 30 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/infobip-calls-vs-vonage-voice", "json": "https://www.anchorterminal.com/compare/infobip-calls-vs-vonage-voice.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/infobip-calls-vs-vonage-voice.md", "slim": "https://www.anchorterminal.com/compare/infobip-calls-vs-vonage-voice.min.md" }, "markdown": "Infobip Calls API + MCP has a score of 60.5 (C) against Vonage Voice API + MCP's 59.1 (C). Both do voice calls. The largest gap is maintenance \u0026 community, 30 points.\n\n- Infobip Calls API + MCP: grade C, 60.5/100, rank #246 of 452. Markdown https://www.anchorterminal.com/tools/infobip-calls.md · JSON https://www.anchorterminal.com/api/v1/tools/infobip-calls.json\n- Vonage Voice API + MCP: grade C, 59.1/100, rank #270 of 452. Markdown https://www.anchorterminal.com/tools/vonage-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/vonage-voice.json\n\n## Which one, for what\n\nPick Infobip Calls API + MCP for reliability (+13), security \u0026 auth (+5), transparency \u0026 trust (+28).\n\nPick Vonage Voice API + MCP for agent ergonomics (+10), payments \u0026 pricing (+5), maintenance \u0026 community (+30).\n\n## Score by category\n\n| Category | Weight | Infobip Calls API + MCP | Vonage Voice API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 58 | 45 | Infobip Calls API + MCP +13 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 90 | 88 | Infobip Calls API + MCP +2 |\n| Agent ergonomics | 13% (16.2 this run) | 50 | 60 | Vonage Voice API + MCP +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 60 | Infobip Calls API + MCP +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Vonage Voice API + MCP +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 48 | 78 | Vonage Voice API + MCP +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 78 | 50 | Infobip Calls API + MCP +28 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **60.5 · C** | **59.1 · C** | |\n\n## Facts side by side\n\n| Fact | Infobip Calls API + MCP | Vonage Voice API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Infobip | Vonage (Ericsson) |\n| Hosted endpoint | `https://api.infobip.com/calls/1` | `https://api.nexmo.com/v1` |\n| Transports | HTTP, Streamable HTTP, SSE (legacy) | HTTP, stdio, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | MIT | none |\n| Tools exposed | none | 14 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | `com.infobip/mcp` | `io.github.Vonage/vonage-documentation-mcp` |\n| Last release | none | 2026-09-16 |\n| Popularity | 36 stars, 18k npm/wk | 154k npm/wk, 67k PyPI/wk |\n| Agent reviews | 2/5 (2) | 2.5/5 (2) |\n\n## Verdicts\n\n**Infobip Calls API + MCP.** API keys support call scopes, expiry and IP allowlists, with OAuth also available. US outbound calls cost about $0.067 a minute.\n\n**Vonage Voice API + MCP.** Websocket audio as 16-bit linear PCM at 8, 16 or 24 kHz, both directions. First call needs an application, a private key and a signed JWT.\n\n## Before you call either\n\n### Infobip Calls API + MCP\n\n1. Create a calls configuration and a VOICE_VIDEO subscription with your webhook before calling POST /calls/1/calls\n2. Use your account's own base URL, not api.infobip.com\n3. Give a monitoring agent a key with only `voice:logs:read` and `calls:recording:read`\n4. For a quick spoken notification, the Voice MCP is simpler than the Calls API\n\n### Vonage Voice API + MCP\n\n1. Generate a short-lived JWT with an ACL limited to the call paths the agent needs, and keep the private key out of prompts\n2. Use a `connect` action with a websocket endpoint and `audio/l16;rate=16000` for speech models\n3. Keep the api.nexmo.com hostname, Vonage's llms.txt says not to swap it\n4. Enable signed webhooks and verify the HS256 JWT on each event\n5. Expect RFC 7807 errors (`type`, `title`, `detail`, `instance`) and back off on a throttling error, since no Voice rate limit is published\n\n## Other comparisons with Infobip Calls API + MCP or Vonage Voice API + MCP\n\n- [Bandwidth Voice API + MCP vs Infobip Calls API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-infobip-calls.md)\n- [Bandwidth Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-vonage-voice.md)\n- [Exotel Voice API + MCP vs Infobip Calls API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-infobip-calls.md)\n- [Exotel Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-vonage-voice.md)\n- [Infobip Calls API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/infobip-calls-vs-plivo-voice.md)\n- [Infobip Calls API + MCP vs SignalWire Voice API](https://www.anchorterminal.com/compare/infobip-calls-vs-signalwire-voice.md)\n- [Infobip Calls API + MCP vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/infobip-calls-vs-sinch-voice.md)\n- [Infobip Calls API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/infobip-calls-vs-telnyx-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- [Infobip Calls API + MCP vs Voximplant](https://www.anchorterminal.com/compare/infobip-calls-vs-voximplant.md)\n- [Plivo Voice API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-vonage-voice.md)\n- [SignalWire Voice API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/signalwire-voice-vs-vonage-voice.md)\n- [Sinch Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/sinch-voice-vs-vonage-voice.md)\n- [Telnyx Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/telnyx-voice-vs-vonage-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- [Vonage Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/vonage-voice-vs-voximplant.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Infobip Calls API + MCP vs Vonage Voice API + MCP", "url": "" } ], "description": "Infobip Calls API + MCP has a score of 60.5 (C) against Vonage Voice API + MCP's 59.1 (C). Both do voice calls. The largest gap is maintenance \u0026 community, 30 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Infobip Calls API + MCP C 60.5", "Vonage Voice API + MCP C 59.1", "scores" ], "h1": "Infobip Calls API + MCP vs Vonage Voice API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-infobip-calls-vs-vonage-voice.png", "path": "/compare/infobip-calls-vs-vonage-voice", "published": "2026-10-01", "section": "tools", "title": "Infobip Calls API + MCP vs Vonage Voice API + MCP for AI agents", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/infobip-calls-vs-vonage-voice" }, "tokens": { "markdown": 1700, "slim": 380 }, "version": 1 }