{
  "data": {
    "a": {
      "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": 39.8,
        "grade": "E",
        "agentReady": false,
        "rank": 424,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 10,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 40,
          "maintenance": 5,
          "payments": 20,
          "reliability": 50,
          "schema": 48,
          "security": 40,
          "transparency": 63
        },
        "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.",
        "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": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 39.8
          }
        ],
        "editorialScores": {
          "ergonomics": 40,
          "maintenance": 5,
          "payments": 20,
          "reliability": 50,
          "schema": 48,
          "security": 40,
          "transparency": 35
        },
        "provenanceScore": 90
      },
      "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": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/exotel-voice.json",
      "live": {
        "slug": "exotel-voice",
        "probe": {
          "target": "https://api.exotel.com/v1",
          "method": "get",
          "lastAt": "2026-10-04T23:48:08.064417887Z",
          "lastOk": true,
          "lastStatus": 400,
          "lastMs": 736,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 725,
          "p95ms24h": 781,
          "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://status.exotel.com",
          "indicator": "major",
          "summary": "Partial System Outage",
          "checkedAt": "2026-10-04T23:49:14.241553195Z"
        },
        "githubStars": 5,
        "securityTxt": {
          "url": "https://exotel.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:38.635394589Z"
        },
        "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": "2026-10-04T15:42:36.379688862Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c48075a649c5"
          },
          {
            "url": "https://exotel.com/pricing/",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:44:34.929433729Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c189da9b16a1"
          },
          {
            "url": "https://exotel.com/privacy-policy/",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:44:37.13126856Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3fa8ae110c4a"
          },
          {
            "url": "https://exotel.com/terms-of-service-exotel/",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:44:39.317095047Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "1ee897578d5d"
          }
        ],
        "updatedAt": "2026-10-04T23:49:14.241553195Z"
      }
    },
    "b": {
      "slug": "telnyx-voice",
      "name": "Telnyx Voice API + MCP",
      "vendor": "Telnyx",
      "vendorUrl": "https://telnyx.com",
      "kind": "http-api",
      "category": "voice-calling",
      "summary": "Carrier-owned Voice API (Call Control and TeXML) for calls, numbers, websocket media streaming, recording and transfers on Telnyx's own network.",
      "url": "https://www.anchorterminal.com/tools/telnyx-voice",
      "markdownUrl": "https://www.anchorterminal.com/tools/telnyx-voice.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/telnyx-voice.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/telnyx-voice.json",
      "repo": "https://github.com/team-telnyx/telnyx-node",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.telnyx.com/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "telnyx"
        },
        {
          "registry": "npm",
          "name": "telnyx-mcp"
        },
        {
          "registry": "pypi",
          "name": "telnyx"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key from the portal for the REST API and the hosted MCP endpoint. Claude custom connectors can instead grant access through the Telnyx portal. Call Control webhooks are signed.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go with no minimum and no free credit. Fund by card, or by x402 (USDC on Base), MPP or ACP top-ups through the API. Voice API fee $0.002 a minute each way, plus SIP trunking billed separately. US local termination from $0.005 a minute, local origination from $0.0032, toll-free origination from $0.015. US local and toll-free numbers $1 a month. Recording $0.002 a minute, media streaming $0.0035 a minute, conferencing $0.002 a participant a minute, answering machine detection $0.002 a call. AI Assistants and Conversation Relay $0.05 a minute. Committed plans from $500 a month (https://telnyx.com/pricing/call-control, https://telnyx.com/agent-signup.md).",
      "priceSummary": "$1 / mo",
      "where": "both",
      "x402": {
        "level": "partial",
        "evidence": "Telnyx's agent signup guide documents POST https://api.telnyx.com/v2/x402/credit_account to top up account credit in USDC on Base, alongside MPP at /v2/machine-payments/account-credit and ACP checkout sessions. These are account top-ups, not per-call payments on the voice endpoints, and per-payment limits aren't published. Not tested by us (https://telnyx.com/agent-signup.md, checked 2026-10-01).",
        "endpoints": [
          {
            "url": "https://api.telnyx.com/v2/x402/credit_account",
            "priceUsd": null,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 3,
      "popularity": {
        "githubStars": 197,
        "npmWeekly": 416629,
        "pypiWeekly": 178817,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://developers.telnyx.com/docs/voice/programmable-voice/get-started",
      "llmsTxt": "https://developers.telnyx.com/llms.txt",
      "openapi": "https://raw.githubusercontent.com/team-telnyx/openapi/master/openapi/spec3.json",
      "registryName": "io.github.team-telnyx/telnyx",
      "capabilities": [
        "voice.calls",
        "voice.numbers",
        "voice.streaming",
        "voice.sip",
        "voice.recording",
        "voice.transfer"
      ],
      "tags": [
        "hosted",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "streaming",
        "x402",
        "stablecoin",
        "prepaid"
      ],
      "lastRelease": "2026-09-25",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 74.4,
        "grade": "BB",
        "agentReady": true,
        "rank": 48,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 90,
          "maintenance": 83,
          "payments": 65,
          "reliability": 75,
          "schema": 93,
          "security": 45,
          "transparency": 73
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "About $0.007 a minute all-in for US outbound ($0.002 Voice API plus $0.005 termination). x402 and MPP only top up credit, they don't pay per call.",
        "strengths": [
          "About $0.007 a minute all-in for US outbound ($0.002 Voice API plus $0.005 termination)",
          "Bot signup, API key creation and x402 or MPP account top-ups without a browser",
          "30 outbound dials a second, Retry-After on 429, and command_id to de-duplicate retried call commands",
          "OpenAPI spec, llms.txt, pricing.md and an MCP in the official registry",
          "SOC 2 Type II and ISO 27001"
        ],
        "weaknesses": [
          "x402 and MPP only top up credit, they don't pay per call",
          "No free credit, a new account starts at zero",
          "No scoped or read-only API keys found, and the MCP can dial and buy numbers without confirmation",
          "One-way or degraded call audio for about 12 hours from 10 September, and API 5XX errors for about 2 hours on 23 September",
          "No security.txt, bug bounty or deprecation policy found"
        ],
        "agentNotes": [
          "Create a Call Control application first. `POST /v2/calls` needs its `connection_id`",
          "Fund a new account through /v2/x402/credit_account or MPP before buying a number, since it starts at zero",
          "Only one media stream or fork runs per call, and starting a fork replaces the websocket stream",
          "Add the Voice API fee and SIP trunking rate together when pricing a call",
          "Set a unique command_id on every call command, so a retry after a timeout is ignored rather than repeated"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 74.4
          }
        ],
        "editorialScores": {
          "ergonomics": 90,
          "maintenance": 83,
          "payments": 65,
          "reliability": 75,
          "schema": 93,
          "security": 45,
          "transparency": 55
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl -X POST https://api.telnyx.com/v2/calls -H \"Authorization: Bearer $TELNYX_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"connection_id\":\"7267xxxxxxxxxxxxxx\",\"to\":\"+15559876543\",\"from\":\"+15551234567\"}'",
        "claudeCode": "claude mcp add --transport http telnyx https://api.telnyx.com/v2/mcp --header \"Authorization: Bearer $TELNYX_API_KEY\"",
        "config": {
          "mcpServers": {
            "telnyx": {
              "args": [
                "-y",
                "telnyx-mcp"
              ],
              "command": "npx",
              "env": {
                "TELNYX_API_KEY": "${TELNYX_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/voice.calls",
        "tool": "https://letme.dev/telnyx-voice"
      },
      "sameCompany": [
        "telnyx"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Voice API fee, US outbound",
          "unit": "call-minute",
          "usd": 0.002,
          "note": "SIP termination billed on top"
        },
        {
          "item": "SIP termination, US local",
          "unit": "call-minute",
          "usd": 0.005,
          "note": "starting rate, add to the Voice API fee"
        },
        {
          "item": "Voice API fee, US inbound",
          "unit": "call-minute",
          "usd": 0.002,
          "note": "SIP origination billed on top"
        },
        {
          "item": "SIP origination, US local",
          "unit": "call-minute",
          "usd": 0.0032,
          "note": "starting rate"
        },
        {
          "item": "US local number",
          "unit": "month",
          "usd": 1
        },
        {
          "item": "Media streaming",
          "unit": "call-minute",
          "usd": 0.0035
        },
        {
          "item": "Call recording",
          "unit": "call-minute",
          "usd": 0.002
        },
        {
          "item": "AI Assistant on a call",
          "unit": "call-minute",
          "usd": 0.05,
          "note": "includes STT, LLM and TTS"
        }
      ],
      "provenance": {
        "legalEntity": "Telnyx LLC",
        "domain": "telnyx.com",
        "domainRegistered": "2009-05-04",
        "endpointOnVendorDomain": true,
        "terms": "https://telnyx.com/terms-and-conditions-of-service",
        "privacy": "https://telnyx.com/privacy-policy",
        "statusPage": "https://status.telnyx.com",
        "changelog": "https://telnyx.com/release-notes",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/telnyx-voice.json",
      "live": {
        "slug": "telnyx-voice",
        "probe": {
          "target": "https://api.telnyx.com/v2",
          "method": "get",
          "lastAt": "2026-10-04T23:48:16.884811721Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 125,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 131,
          "p95ms24h": 179,
          "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://status.telnyx.com",
          "indicator": "maintenance",
          "summary": "Under Maintenance",
          "checkedAt": "2026-10-04T23:49:29.440458562Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "team-telnyx/telnyx-node",
            "version": "v7.24.0",
            "released": "2026-09-25",
            "seenAt": "2026-10-04T16:41:29.493877068Z"
          },
          {
            "registry": "npm",
            "name": "telnyx",
            "version": "7.24.0",
            "seenAt": "2026-10-04T16:41:27.091742528Z"
          },
          {
            "registry": "npm",
            "name": "telnyx-mcp",
            "version": "7.24.0",
            "seenAt": "2026-10-04T16:41:27.511074933Z"
          },
          {
            "registry": "pypi",
            "name": "telnyx",
            "version": "4.182.0",
            "released": "2026-09-25",
            "seenAt": "2026-10-04T16:41:29.302568773Z"
          }
        ],
        "githubStars": 197,
        "npmWeekly": 490168,
        "pypiWeekly": 201435,
        "securityTxt": {
          "url": "https://telnyx.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:05.446481255Z"
        },
        "llmsTxt": {
          "url": "https://developers.telnyx.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:17.91217441Z"
        },
        "domain": {
          "domain": "telnyx.com",
          "registered": "2009-05-04",
          "source": "https://rdap.verisign.com/com/v1/domain/telnyx.com",
          "checkedAt": "2026-10-04T13:09:33.721251862Z"
        },
        "pages": [
          {
            "url": "https://telnyx.com/release-notes",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:27.454526964Z",
            "changedAt": "2026-10-03T15:36:23.545689762Z",
            "fingerprint": "7dbe8c4f1bae"
          },
          {
            "url": "https://telnyx.com/pricing/call-control",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:20.898706649Z",
            "changedAt": "2026-10-04T15:48:20.898706649Z",
            "fingerprint": "30c2be8962d3"
          },
          {
            "url": "https://telnyx.com/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:25.893595009Z",
            "changedAt": "2026-10-04T15:48:25.893595009Z",
            "fingerprint": "8367d06cc9a7"
          },
          {
            "url": "https://telnyx.com/terms-and-conditions-of-service",
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  "markdown": "Telnyx Voice API + MCP has a score of 74.4 (BB) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance \u0026 community, 78 points.\n\n- Exotel Voice API + MCP: grade E, 39.8/100, rank #424 of 452. Markdown https://www.anchorterminal.com/tools/exotel-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/exotel-voice.json\n- Telnyx Voice API + MCP: grade BB, 74.4/100, rank #48 of 452. Markdown https://www.anchorterminal.com/tools/telnyx-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/telnyx-voice.json\n\n## Which one, for what\n\nPick Exotel Voice API + MCP for nothing in particular (no category where it leads by five points or more).\n\nPick Telnyx Voice API + MCP for reliability (+25), schema \u0026 documentation (+45), agent ergonomics (+50), security \u0026 auth (+5), payments \u0026 pricing (+45), maintenance \u0026 community (+78), transparency \u0026 trust (+10).\n\n## Score by category\n\n| Category | Weight | Exotel Voice API + MCP | Telnyx Voice API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 75 | Telnyx Voice API + MCP +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 48 | 93 | Telnyx Voice API + MCP +45 |\n| Agent ergonomics | 13% (16.2 this run) | 40 | 90 | Telnyx Voice API + MCP +50 |\n| Security \u0026 auth | 14% (17.5 this run) | 40 | 45 | Telnyx Voice API + MCP +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 65 | Telnyx Voice API + MCP +45 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 5 | 83 | Telnyx Voice API + MCP +78 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 73 | Telnyx Voice API + MCP +10 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **39.8 · E** | **74.4 · BB** | |\n\n## Facts side by side\n\n| Fact | Exotel Voice API + MCP | Telnyx Voice API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Exotel | Telnyx |\n| Hosted endpoint | `https://api.exotel.com/v1` | `https://api.telnyx.com/v2` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | payer tooling only |\n| Licence | MIT | MIT |\n| Tools exposed | 62 | 3 |\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 | no | no |\n| llms.txt | no | yes |\n| MCP registry | not listed | `io.github.team-telnyx/telnyx` |\n| Last release | none | 2026-09-25 |\n| Popularity | 5 stars | 197 stars, 417k npm/wk, 179k PyPI/wk |\n| Agent reviews | 2/5 (2) | 3.5/5 (8) |\n\n## Verdicts\n\n**Exotel Voice API + MCP.** Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not published.\n\n**Telnyx Voice API + MCP.** About $0.007 a minute all-in for US outbound ($0.002 Voice API plus $0.005 termination). x402 and MPP only top up credit, they don't pay per call.\n\n## Before you call either\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### Telnyx Voice API + MCP\n\n1. Create a Call Control application first. `POST /v2/calls` needs its `connection_id`\n2. Fund a new account through /v2/x402/credit_account or MPP before buying a number, since it starts at zero\n3. Only one media stream or fork runs per call, and starting a fork replaces the websocket stream\n4. Add the Voice API fee and SIP trunking rate together when pricing a call\n5. Set a unique command_id on every call command, so a retry after a timeout is ignored rather than repeated\n\n## Other comparisons with Exotel Voice API + MCP or Telnyx 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- [Bandwidth Voice API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-telnyx-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 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 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- [Infobip Calls API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/infobip-calls-vs-telnyx-voice.md)\n- [Plivo Voice API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-telnyx-voice.md)\n- [SignalWire Voice API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/signalwire-voice-vs-telnyx-voice.md)\n- [Sinch Voice API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/sinch-voice-vs-telnyx-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- [Telnyx Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/telnyx-voice-vs-vonage-voice.md)\n- [Telnyx Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/telnyx-voice-vs-voximplant.md)\n",
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    "description": "Telnyx Voice API + MCP has a score of 74.4 (BB) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance \u0026 community, 78 points. Category scores, facts, verdicts and agent notes side by side.",
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