{ "data": { "a": { "slug": "didww-voice-and-number-management", "name": "DIDWW Voice and Number Management API", "vendor": "DIDWW Ireland Limited", "vendorUrl": "https://www.didww.com", "kind": "http-api", "category": "voice-calling", "summary": "DIDWW is a telecoms carrier selling phone numbers in more than 90 countries with inbound and outbound SIP trunking. Its REST API v3 orders numbers and configures trunks and capacity, and a remote MCP server covers the same account tasks.", "url": "https://www.anchorterminal.com/tools/didww-voice-and-number-management", "markdownUrl": "https://www.anchorterminal.com/tools/didww-voice-and-number-management.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/didww-voice-and-number-management.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/didww-voice-and-number-management.json", "repo": "https://github.com/didww/didww-api-3-openapi", "license": "Proprietary service under the DIDWW Terms and Agreements (Rev 3.1). The OpenAPI repository and the official SDKs are MIT", "transports": [ "http" ], "remoteUrl": "https://api.didww.com/mcp", "packages": [ { "registry": "npm", "name": "@didww/sdk" }, { "registry": "pypi", "name": "didww" } ], "auth": "api-key", "authNotes": "REST API v3 takes an API key in the `Api-Key` header with no `Bearer` prefix. Keys are created by a signed-in person in the User Panel under APIs, DIDWW API 3, with a friendly name and an optional source IP allow list. No scopes or read-only keys were found. Production and sandbox keys are separate. Access is self-serve after a browser sign-up with email confirmation. Outbound trunks need an approved application. The MCP server at `https://api.didww.com/mcp` uses OAuth 2.0 with PKCE and dynamic client registration, a browser sign-in and the user's panel roles, with tokens lasting two hours.", "pricing": "usage", "pricingNotes": "No per-number or per-minute price is public. Price lists are requested through a form or read inside an account or through the API. Accounts are free and prepaid in US dollars, with a $30 minimum balance before ordering and a $100 minimum for wire transfers. A number costs a one-time fee equal to one month's charge, waived for API orders, plus a monthly charge. Inbound capacity is flat-rate per channel or per minute, and outbound termination is per minute. The sandbox is free and takes Stripe test cards (https://www.didww.com/pricing.md, checked 2026-10-09).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the OpenAPI document, the docs indexes, the authentication guide or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 10, "npmWeekly": 462, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://doc.didww.com/api3/2026-04-16/index.html", "llmsTxt": "https://doc.didww.com/llms.txt", "openapi": "https://doc.didww.com/openapi/2026-04-16/v3_api.json", "capabilities": [ "voice.numbers", "voice.sip" ], "tags": [ "hosted", "sip", "phone-numbers", "openapi", "llms-txt", "mcp", "oauth", "sandbox", "typescript", "python", "webhooks", "prepaid" ], "lastRelease": "2026-10-07", "graded": true, "anchor": { "graded": true, "score": 65.1, "grade": "B", "agentReady": false, "rank": 330, "ranked": true, "rankOf": 950, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 83, "payments": 15, "reliability": 66, "schema": 87, "security": 57, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "An OpenAPI 3.0.3 document with 107 operations, Markdown docs, a free sandbox and SDKs in seven languages cover number ordering and SIP trunk set-up. No per-number or per-minute price is public, API keys carry no scopes, orders have no idempotency key, and outbound calling needs an approved application. Calls travel over SIP only.", "bestFor": "Teams that run their own SIP system, or a voice agent platform that accepts SIP trunks, and need numbers in many countries with compliance records handled through an API.", "strengths": [ "A public OpenAPI 3.0.3 document describes 107 operations on 67 paths, and 105 of them carry a description of purpose and behaviour", "Every docs page has a Markdown twin, with llms.txt indexes on both sites, an OpenAPI discovery manifest and an MCP server card", "A sandbox at `https://sandbox-api.didww.com/v3` is free, separate from production, and funded with Stripe test cards", "The versioning policy says released dated API versions are never retired, and an account stays on its version until a person upgrades it", "The MCP server shows a server-side preview and waits for confirmation before purchases, deletions and PSTN rate acceptance, and a confirmation works once", "Official SDKs for TypeScript, Python, PHP, Java, Go, .NET and Ruby are public under MIT, with Ruby, Python and TypeScript tagged on 7 October 2026" ], "weaknesses": [ "No per-number or per-minute price is published. Price lists are sent on request or shown inside an account, and a $30 balance is needed before ordering", "REST API keys reach the whole account. An optional source IP allow list is the only restriction, with no scopes and no read-only key", "No idempotency key was found on `POST /orders`, which charges the prepaid balance at once, so a retried request can buy twice", "The API cannot place, answer, record or stream a call. Calls run over the customer's own SIP system, and Call Events webhooks are switched on by support", "Outbound trunks need an approved application from a business account with a company name and VAT or tax ID", "Callback signing moved from an API key to a separate callback secret on 6 October 2026, and the 2026-04-16 changelog page does not record it", "No security.txt, disclosure policy, bug bounty, uptime SLA, data processing agreement or sub-processor list was found", "The terms forbid auto-dialling, telemarketing and continuous or extensive call forwarding, which matters before an agent places outbound calls" ], "agentNotes": [ "Send `Api-Key: \u003ckey\u003e` with no `Bearer` prefix, plus `Accept: application/vnd.api+json`, and `Content-Type: application/vnd.api+json` on every request with a body", "Set `X-DIDWW-API-Version: 2026-04-16` on each request and read `meta.api_version` in the reply. A header older than the account's version is ignored", "Before retrying a timed-out `POST /orders`, list `GET /orders` first. The order is charged to the balance at once and no idempotency key exists", "Stay under 20 requests a second per key. On `429` wait before retrying, since no `Retry-After` header is documented", "Use `fields[...]`, `filter[...]`, `include` and `page[size]` (default 50, maximum 100) to keep JSON:API replies small", "Check `GET /address_requirements` before buying a number. Many countries need a verified identity and address, and the sandbox cannot run identity verification", "Create and enable a callback secret in the User Panel before relying on callbacks. Without one nothing is sent, and receivers must verify `X-DIDWW-Signature`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 65.1 } ], "editorialScores": { "ergonomics": 77, "maintenance": 83, "payments": 15, "reliability": 66, "schema": 87, "security": 57, "transparency": 55 }, "provenanceScore": 85 }, "connect": { "install": "npm install @didww/sdk", "http": "GET https://api.didww.com/v3/countries\nApi-Key: YOUR_API_KEY\nX-DIDWW-API-Version: 2026-04-16\nAccept: application/vnd.api+json" }, "letme": { "capability": "https://letme.dev/voice.numbers", "tool": "https://letme.dev/didww-voice-and-number-management" }, "area": "voice", "provenance": { "legalEntity": "DIDWW Ireland Limited", "domain": "didww.com", "domainRegistered": "2006-01-16", "endpointOnVendorDomain": true, "terms": "https://www.didww.com/DIDWW-Terms-and-Agreements", "privacy": "https://www.didww.com/privacy-notice", "statusPage": "https://status.didww.com", "changelog": "https://doc.didww.com/api3/2026-04-16/changelog.html", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The terms link is the DIDWW Terms and Agreements, Rev 3.1, copyright 2026, between the customer and DIDWW Ireland Limited of 25 North Wall Quay, Dublin 1. It covers all DIDWW services and refers to a Service Appendix.", "The Privacy Notice is Rev 2.1, copyright 2025. It gives the company number as 473521 and names gdpr@didww.com for requests. No data processing agreement or sub-processor list was found.", "The REST API and the MCP server answer on api.didww.com and the sandbox on sandbox-api.didww.com.", "The status page runs on Instatus with eight components, among them DIDWW API, Inbound Voice and Outbound Voice.", "https://www.didww.com/.well-known/security.txt returned 404.", "RDAP for didww.com gives a registration date of 2006-01-16.", "The changelog link is the page for API version 2026-04-16. Its entries are not dated. Dated revisions are in the commit history of github.com/didww/didww-api-3-openapi.", "No clause on automated access, scraping or benchmarking was found in the Terms and Agreements. robots.txt on www.didww.com and doc.didww.com allows the pages read.", "https://api.didww.com/robots.txt answered 403, so no request was sent to that host and the OAuth metadata was not read." ], "score": 85 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/didww-voice-and-number-management.json", "live": { "slug": "didww-voice-and-number-management", "probe": { "target": "https://api.didww.com/mcp", "method": "get", "lastAt": "2026-10-10T03:07:03.494188648Z", "lastOk": true, "lastStatus": 401, "lastMs": 395, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 394, "p95ms24h": 527, "samples24h": 117, "samples30d": 117, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 32, "ok": 32 } ] }, "vendorStatus": { "page": "https://status.didww.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:50:25.908796867Z" }, "versions": [ { "registry": "npm", "name": "@didww/sdk", "version": "3.1.1", "seenAt": "2026-10-09T16:49:43.396621514Z" }, { "registry": "pypi", "name": "didww", "version": "3.2.0", "released": "2026-10-08", "seenAt": "2026-10-09T16:49:44.365849676Z" } ], "githubStars": 10, "npmWeekly": 462, "pypiWeekly": 915, "pages": [ { "url": "https://doc.didww.com/api3/2026-04-16/changelog.html", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:36:22.294016104Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7d9c86f4f536" }, { "url": "https://www.didww.com/pricing.md", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:49:33.776952203Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "60eebb22a63e" }, { "url": "https://www.didww.com/privacy-notice", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:49:35.769637352Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a193b3f64bb0" }, { "url": "https://www.didww.com/DIDWW-Terms-and-Agreements", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:49:31.750868001Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2568f2c611f6" } ], "updatedAt": "2026-10-10T03:07:03.494188648Z" } }, "answer": "DIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Exotel Voice API + MCP's 39.4 (E), and leads in 6 of 7 scored categories. Exotel Voice API + MCP leads on payments \u0026 pricing.", "b": { "slug": "exotel-voice", "name": "Exotel Voice API + MCP", "vendor": "Exotel", "vendorUrl": "https://exotel.com", "kind": "http-api", "category": "voice-calling", "summary": "Indian cloud telephony API for click-to-call, call flows, virtual numbers (ExoPhones), SIP trunking and AgentStream, which streams call audio to your bot over WebSocket in both directions.", "url": "https://www.anchorterminal.com/tools/exotel-voice", "markdownUrl": "https://www.anchorterminal.com/tools/exotel-voice.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/exotel-voice.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/exotel-voice.json", "repo": "https://github.com/exotel/ExotelMCP", "license": "MIT", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.exotel.com/v1", "packages": [], "auth": "api-key", "authNotes": "HTTP Basic auth with API key and token, and the Account SID in the path. India-hosted accounts use api.in.exotel.com. The hosted MCP takes a JSON object with the base64 key and token in the Authorization header.", "pricing": "usage", "pricingNotes": "Pay as you go or bundled plans in INR, with a free trial and no card. Per-minute rates and plan prices aren't published on the Exotel site, they're quoted after signup or by sales. Numbers carry a one-time activation fee plus monthly rental (https://exotel.com/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": 62, "popularity": { "githubStars": 5, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developer.exotel.com/docs/voice", "capabilities": [ "voice.calls", "voice.numbers", "voice.streaming", "voice.sip", "voice.recording", "voice.transfer" ], "tags": [ "hosted", "no-card", "mcp", "webhooks", "streaming" ], "graded": true, "anchor": { "graded": true, "score": 39.4, "grade": "E", "agentReady": false, "rank": 916, "ranked": true, "rankOf": 950, "categoryRank": 13, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 40, "maintenance": 5, "payments": 20, "reliability": 50, "schema": 48, "security": 40, "transparency": 59 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not published.", "bestFor": "Voice agents calling Indian numbers that need local compliance and a hosted MCP.", "strengths": [ "Local Indian numbers and DLT and TRAI handling", "Hosted MCP with 62 tools that can place calls and manage VoiceBots", "AgentStream bidirectional audio with mark and clear events for barge-in", "No-card trial", "Error code dictionary and multi-language examples since February 2026" ], "weaknesses": [ "Per-minute rates and plan prices not published", "No OpenAPI spec, llms.txt or official server SDK", "Changelog quiet since February 2026", "MCP tools carry no read-only or destructive annotations, and credentials travel as a JSON blob in a header", "No published rate limits or SLA, and no bug bounty or disclosure policy found" ], "agentNotes": [ "Use api.in.exotel.com for India-hosted accounts and api.exotel.com for Singapore-hosted ones", "Pass StreamUrl on Calls/connect for a quick outbound voice-agent call", "Whitelist test numbers before calling on a trial account", "Pass confirm=true only after a person approves a destructive MCP tool call" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 39.4 } ], "editorialScores": { "ergonomics": 40, "maintenance": 5, "payments": 20, "reliability": 50, "schema": 48, "security": 40, "transparency": 35 }, "provenanceScore": 83 }, "connect": { "http": "curl -u \"$EXOTEL_API_KEY:$EXOTEL_API_TOKEN\" -X POST \"https://api.exotel.com/v1/Accounts/$EXOTEL_SID/Calls/connect\" \\\n -d From=+91XXXXXXXXXX -d To=+91XXXXXXXXXX -d CallerId=$EXOTEL_EXOPHONE", "claudeCode": "claude mcp add --transport http exotel https://mcp.exotel.com/mcp --header \"Authorization: $EXOTEL_MCP_AUTH_JSON\"", "config": { "mcpServers": { "exotel": { "headers": { "Authorization": "${EXOTEL_MCP_AUTH_JSON}" }, "type": "http", "url": "https://mcp.exotel.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/voice.calls", "tool": "https://letme.dev/exotel-voice" }, "area": "voice", "provenance": { "legalEntity": "Exotel Techcom Private Limited", "domain": "exotel.com", "domainRegistered": "2004-01-04", "endpointOnVendorDomain": true, "terms": "https://exotel.com/terms-of-service-exotel/", "privacy": "https://exotel.com/privacy-policy/", "statusPage": "https://status.exotel.com", "changelog": "https://developer.exotel.com/docs/references/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Legal entity from the terms of service. The developer changelog's latest entry is February 2026." ], "score": 83 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/exotel-voice.json", "live": { "slug": "exotel-voice", "probe": { "target": "https://api.exotel.com/v1", "method": "get", "lastAt": "2026-10-10T03:07:05.035094931Z", "lastOk": true, "lastStatus": 400, "lastMs": 701, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 726, "p95ms24h": 795, "samples24h": 249, "samples30d": 2468, "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": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "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": 32, "ok": 32 } ] }, "vendorStatus": { "page": "https://status.exotel.com", "indicator": "major", "summary": "Partial System Outage", "checkedAt": "2026-10-10T03:02:09.635925071Z" }, "githubStars": 5, "securityTxt": { "url": "https://exotel.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:39:34.03912309Z" }, "llmsTxt": { "url": "https://developer.exotel.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-01T13:02:56.207120986Z" }, "domain": { "domain": "exotel.com", "registered": "2004-01-04", "source": "https://rdap.verisign.com/com/v1/domain/exotel.com", "checkedAt": "2026-10-04T13:08:47.298921523Z" }, "pages": [ { "url": "https://developer.exotel.com/docs/references/changelog", "kind": "changelog", "status": 404, "checkedAt": "2026-10-09T18:35:14.250270203Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c48075a649c5" }, { "url": "https://exotel.com/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-09T18:39:12.030238289Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c189da9b16a1" }, { "url": "https://exotel.com/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-09T18:39:14.09102518Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3fa8ae110c4a" }, { "url": "https://exotel.com/terms-of-service-exotel/", "kind": "terms", "status": 304, "checkedAt": "2026-10-09T18:39:16.222719131Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1ee897578d5d" } ], "updatedAt": "2026-10-10T03:07:05.035094931Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "DIDWW Ireland Limited", "b": "Exotel", "name": "Vendor" }, { "a": "https://api.didww.com/mcp", "b": "https://api.exotel.com/v1", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under the DIDWW Terms and Agreements (Rev 3.1). The OpenAPI repository and the official SDKs are MIT", "b": "MIT", "name": "Licence" }, { "a": "none", "b": "62", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-07", "b": "none", "name": "Last release" }, { "a": "no date given", "b": "no date given", "name": "Terms last updated" }, { "a": "no date given", "b": "no date given", "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": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "10 stars, 462 npm/wk", "b": "5 stars", "name": "Popularity" }, { "a": "none", "b": "2/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "DIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Exotel Voice API + MCP's 39.4 (E), and leads in 6 of 7 scored categories. Exotel Voice API + MCP leads on payments \u0026 pricing.", "question": "Which is better for AI agents, DIDWW Voice and Number Management API or Exotel Voice API + MCP?" }, { "answer": "Both need an API key.", "question": "Do DIDWW Voice and Number Management API and Exotel Voice API + MCP need an API key?" }, { "answer": "Yes. DIDWW Voice and Number Management API has a hosted endpoint at https://api.didww.com/mcp and Exotel Voice API + MCP at https://api.exotel.com/v1.", "question": "Can an agent call DIDWW Voice and Number Management API and Exotel Voice API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 66 against 50", "Schema \u0026 documentation, 87 against 48", "Agent ergonomics, 77 against 40", "Security \u0026 auth, 57 against 40", "Maintenance \u0026 community, 83 against 5", "Transparency \u0026 trust, 70 against 59" ], "also": null, "goodFor": "Teams that run their own SIP system, or a voice agent platform that accepts SIP trunks, and need numbers in many countries with compliance records handled through an API.", "slug": "didww-voice-and-number-management", "watchFor": "No per-number or per-minute price is published. Price lists are sent on request or shown inside an account, and a $30 balance is needed before ordering" }, { "aheadOn": [ "Payments \u0026 pricing, 20 against 15" ], "also": [ "Free to start without a card" ], "goodFor": "Voice agents calling Indian numbers that need local compliance and a hosted MCP.", "slug": "exotel-voice", "watchFor": "Per-minute rates and plan prices not published" } ], "job": { "capability": "voice.numbers", "name": "Phone numbers" }, "others": [ { "json": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-exotel-voice.json", "title": "Bandwidth Voice API + MCP vs Exotel Voice API + MCP", "url": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-exotel-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-infobip-calls.json", "title": "Exotel Voice API + MCP vs Infobip Calls API + MCP", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-infobip-calls" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-jambonz.json", "title": "Exotel Voice API + MCP vs jambonz", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-jambonz" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-livekit-telephony.json", "title": "Exotel Voice API + MCP vs LiveKit Telephony", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-livekit-telephony" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice.json", "title": "Exotel Voice API + MCP vs Plivo Voice API", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-signalwire-voice.json", "title": "Exotel Voice API + MCP vs SignalWire Voice API", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-signalwire-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-sinch-voice.json", "title": "Exotel Voice API + MCP vs Sinch Voice API + MCP", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-sinch-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-telnyx-voice.json", "title": "Exotel Voice API + MCP vs Telnyx Voice API + MCP", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-telnyx-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/exotel-voice-vs-vonage-voice.json", "title": "Exotel Voice API + MCP vs Vonage Voice API + MCP", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-vonage-voice" }, { "json": "https://www.anchorterminal.com/compare/exotel-voice-vs-voximplant.json", "title": "Exotel Voice API + MCP vs Voximplant", "url": "https://www.anchorterminal.com/compare/exotel-voice-vs-voximplant" }, { "json": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-didww-voice-and-number-management.json", "title": "Bandwidth Voice API + MCP vs DIDWW Voice and Number Management API", "url": "https://www.anchorterminal.com/compare/bandwidth-voice-vs-didww-voice-and-number-management" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls.json", "title": "DIDWW Voice and Number Management API vs Infobip Calls API + MCP", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-livekit-telephony.json", "title": "DIDWW Voice and Number Management API vs LiveKit Telephony", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-livekit-telephony" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-plivo-voice.json", "title": "DIDWW Voice and Number Management API vs Plivo Voice API", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-plivo-voice" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-signalwire-voice.json", "title": "DIDWW Voice and Number Management API vs SignalWire Voice API", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-signalwire-voice" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-sinch-voice.json", "title": "DIDWW Voice and Number Management API vs Sinch Voice API + MCP", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-sinch-voice" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-telnyx-voice.json", "title": "DIDWW Voice and Number Management API vs Telnyx Voice API + MCP", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-telnyx-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" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-vonage-voice.json", "title": "DIDWW Voice and Number Management API vs Vonage Voice API + MCP", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-vonage-voice" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-voximplant.json", "title": "DIDWW Voice and Number Management API vs Voximplant", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-voximplant" }, { "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-jambonz.json", "title": "DIDWW Voice and Number Management API vs jambonz", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-jambonz" } ], "scores": [ { "by": 16, "didww-voice-and-number-management": 66, "edge": "didww-voice-and-number-management", "exotel-voice": 50, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 39, "didww-voice-and-number-management": 87, "edge": "didww-voice-and-number-management", "exotel-voice": 48, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 37, "didww-voice-and-number-management": 77, "edge": "didww-voice-and-number-management", "exotel-voice": 40, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 17, "didww-voice-and-number-management": 57, "edge": "didww-voice-and-number-management", "exotel-voice": 40, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 5, "didww-voice-and-number-management": 15, "edge": "exotel-voice", "exotel-voice": 20, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 78, "didww-voice-and-number-management": 83, "edge": "didww-voice-and-number-management", "exotel-voice": 5, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 11, "didww-voice-and-number-management": 70, "edge": "didww-voice-and-number-management", "exotel-voice": 59, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "DIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Exotel Voice API + MCP's 39.4 (E), and leads in 6 of 7 scored categories. Exotel Voice API + MCP leads on payments \u0026 pricing. Both do phone numbers.", "verdicts": { "didww-voice-and-number-management": "An OpenAPI 3.0.3 document with 107 operations, Markdown docs, a free sandbox and SDKs in seven languages cover number ordering and SIP trunk set-up. No per-number or per-minute price is public, API keys carry no scopes, orders have no idempotency key, and outbound calling needs an approved application. Calls travel over SIP only.", "exotel-voice": "Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not published." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice", "json": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice.md", "slim": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice.min.md" }, "markdown": "DIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Exotel Voice API + MCP's 39.4 (E), and leads in 6 of 7 scored categories. Exotel Voice API + MCP leads on payments \u0026 pricing. Both do phone numbers.\n\n- DIDWW Voice and Number Management API: grade B, 65.1/100, rank #330 of 950. Markdown https://www.anchorterminal.com/tools/didww-voice-and-number-management.md · JSON https://www.anchorterminal.com/api/v1/tools/didww-voice-and-number-management.json\n- Exotel Voice API + MCP: grade E, 39.4/100, rank #916 of 950. Markdown https://www.anchorterminal.com/tools/exotel-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/exotel-voice.json\n- Best phone calling and voice transport APIs for AI agents: https://www.anchorterminal.com/best/voice-calling/index.md\n- All 78 calling comparisons: https://www.anchorterminal.com/compare/voice-calling/index.md\n\n## Which one, for what\n\n### DIDWW Voice and Number Management API (B)\n\nGood for: Teams that run their own SIP system, or a voice agent platform that accepts SIP trunks, and need numbers in many countries with compliance records handled through an API.\n\nAhead on:\n- Reliability, 66 against 50\n- Schema \u0026 documentation, 87 against 48\n- Agent ergonomics, 77 against 40\n- Security \u0026 auth, 57 against 40\n- Maintenance \u0026 community, 83 against 5\n- Transparency \u0026 trust, 70 against 59\n\nWatch for: No per-number or per-minute price is published. Price lists are sent on request or shown inside an account, and a $30 balance is needed before ordering\n\n### Exotel Voice API + MCP (E)\n\nGood for: Voice agents calling Indian numbers that need local compliance and a hosted MCP.\n\nAhead on:\n- Payments \u0026 pricing, 20 against 15\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Per-minute rates and plan prices not published\n\n\n## Score by category\n\n| Category | Weight | DIDWW Voice and Number Management API | Exotel Voice API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 66 | 50 | DIDWW Voice and Number Management API +16 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 87 | 48 | DIDWW Voice and Number Management API +39 |\n| Agent ergonomics | 13% (16.2 this run) | 77 | 40 | DIDWW Voice and Number Management API +37 |\n| Security \u0026 auth | 14% (17.5 this run) | 57 | 40 | DIDWW Voice and Number Management API +17 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 15 | 20 | Exotel 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) | 83 | 5 | DIDWW Voice and Number Management API +78 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 59 | DIDWW Voice and Number Management API +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **65.1 · B** | **39.4 · E** | |\n\n## Facts side by side\n\n| Fact | DIDWW Voice and Number Management API | Exotel Voice API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | DIDWW Ireland Limited | Exotel |\n| Hosted endpoint | `https://api.didww.com/mcp` | `https://api.exotel.com/v1` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under the DIDWW Terms and Agreements (Rev 3.1). The OpenAPI repository and the official SDKs are MIT | MIT |\n| Tools exposed | none | 62 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-10-07 | none |\n| Terms last updated | no date given | no date given |\n| Privacy policy last updated | no date given | no date given |\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 | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 10 stars, 462 npm/wk | 5 stars |\n| Agent reviews | none | 2/5 (2) |\n\n## Verdicts\n\n**DIDWW Voice and Number Management API.** An OpenAPI 3.0.3 document with 107 operations, Markdown docs, a free sandbox and SDKs in seven languages cover number ordering and SIP trunk set-up. No per-number or per-minute price is public, API keys carry no scopes, orders have no idempotency key, and outbound calling needs an approved application. Calls travel over SIP only.\n\n**Exotel Voice API + MCP.** Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not published.\n\n## Before you call either\n\n### DIDWW Voice and Number Management API\n\n1. Send `Api-Key: \u003ckey\u003e` with no `Bearer` prefix, plus `Accept: application/vnd.api+json`, and `Content-Type: application/vnd.api+json` on every request with a body\n2. Set `X-DIDWW-API-Version: 2026-04-16` on each request and read `meta.api_version` in the reply. A header older than the account's version is ignored\n3. Before retrying a timed-out `POST /orders`, list `GET /orders` first. The order is charged to the balance at once and no idempotency key exists\n4. Stay under 20 requests a second per key. On `429` wait before retrying, since no `Retry-After` header is documented\n5. Use `fields[...]`, `filter[...]`, `include` and `page[size]` (default 50, maximum 100) to keep JSON:API replies small\n6. Check `GET /address_requirements` before buying a number. Many countries need a verified identity and address, and the sandbox cannot run identity verification\n7. Create and enable a callback secret in the User Panel before relying on callbacks. Without one nothing is sent, and receivers must verify `X-DIDWW-Signature`\n\n### Exotel Voice API + MCP\n\n1. Use api.in.exotel.com for India-hosted accounts and api.exotel.com for Singapore-hosted ones\n2. Pass StreamUrl on Calls/connect for a quick outbound voice-agent call\n3. Whitelist test numbers before calling on a trial account\n4. Pass confirm=true only after a person approves a destructive MCP tool call\n\n## Questions\n\n### Which is better for AI agents, DIDWW Voice and Number Management API or Exotel Voice API + MCP?\n\nDIDWW Voice and Number Management API scores 65.1 (B) on agent readiness against Exotel Voice API + MCP's 39.4 (E), and leads in 6 of 7 scored categories. Exotel Voice API + MCP leads on payments \u0026 pricing.\n\n### Do DIDWW Voice and Number Management API and Exotel Voice API + MCP need an API key?\n\nBoth need an API key.\n\n### Can an agent call DIDWW Voice and Number Management API and Exotel Voice API + MCP without installing anything?\n\nYes. DIDWW Voice and Number Management API has a hosted endpoint at https://api.didww.com/mcp and Exotel Voice API + MCP at https://api.exotel.com/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice.json, and with the fewest tokens: https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"didww-voice-and-number-management\", \"b\": \"exotel-voice\"}`. From a terminal: `anchor compare didww-voice-and-number-management exotel-voice`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/didww-voice-and-number-management.json and https://www.anchorterminal.com/api/v1/tools/exotel-voice.json\n\n## Other comparisons with DIDWW Voice and Number Management API or Exotel Voice API + MCP\n\n- [Bandwidth Voice API + MCP vs Exotel Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-exotel-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 jambonz](https://www.anchorterminal.com/compare/exotel-voice-vs-jambonz.md)\n- [Exotel Voice API + MCP vs LiveKit Telephony](https://www.anchorterminal.com/compare/exotel-voice-vs-livekit-telephony.md)\n- [Exotel Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice.md)\n- [Exotel Voice API + MCP vs SignalWire Voice API](https://www.anchorterminal.com/compare/exotel-voice-vs-signalwire-voice.md)\n- [Exotel Voice API + MCP vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-sinch-voice.md)\n- [Exotel Voice API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-telnyx-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- [Exotel Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-vonage-voice.md)\n- [Exotel Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/exotel-voice-vs-voximplant.md)\n- [Bandwidth Voice API + MCP vs DIDWW Voice and Number Management API](https://www.anchorterminal.com/compare/bandwidth-voice-vs-didww-voice-and-number-management.md)\n- [DIDWW Voice and Number Management API vs Infobip Calls API + MCP](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-infobip-calls.md)\n- [DIDWW Voice and Number Management API vs LiveKit Telephony](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-livekit-telephony.md)\n- [DIDWW Voice and Number Management API vs Plivo Voice API](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-plivo-voice.md)\n- [DIDWW Voice and Number Management API vs SignalWire Voice API](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-signalwire-voice.md)\n- [DIDWW Voice and Number Management API vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-sinch-voice.md)\n- [DIDWW Voice and Number Management API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-telnyx-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- [DIDWW Voice and Number Management API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-vonage-voice.md)\n- [DIDWW Voice and Number Management API vs Voximplant](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-voximplant.md)\n- [DIDWW Voice and Number Management API vs jambonz](https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-jambonz.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "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": "DIDWW Voice and Number Management API vs Exotel Voice API + MCP", "url": "" } ], "description": "DIDWW Voice and Number Management scores 65.1 (B) to Exotel Voice's 39.4 (E) for phone numbers. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "DIDWW Voice and Number Management API B 65.1", "Exotel Voice API + MCP E 39.4", "scores" ], "h1": "DIDWW Voice and Number Management API vs Exotel Voice API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-didww-voice-and-number-management-vs-exotel-voice.png", "path": "/compare/didww-voice-and-number-management-vs-exotel-voice", "published": "2026-10-01", "section": "tools", "title": "DIDWW Voice and Number Management vs Exotel Voice for AI agents (2026)", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/didww-voice-and-number-management-vs-exotel-voice" }, "tokens": { "markdown": 2850, "slim": 680 }, "version": 1 }