{
  "data": {
    "a": {
      "slug": "telnyx",
      "name": "Telnyx API + MCP",
      "vendor": "Telnyx",
      "vendorUrl": "https://telnyx.com",
      "kind": "http-api",
      "category": "messaging",
      "summary": "Carrier-owned CPaaS with SMS, MMS, RCS and WhatsApp on one REST API, plus an official hosted MCP server at api.telnyx.com/v2/mcp and a stdio MCP package.",
      "url": "https://www.anchorterminal.com/tools/telnyx",
      "markdownUrl": "https://www.anchorterminal.com/tools/telnyx.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/telnyx.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/telnyx.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": "api-key",
      "authNotes": "Bearer API key from the portal for both the REST API and the hosted MCP endpoint. Claude custom connectors can instead grant access through the Telnyx portal. 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. US SMS per part, outbound or inbound, $0.004 on long code, $0.0055 on toll-free and $0.007 on short code, plus carrier passthrough fees ($0.0035 AT\u0026T, $0.0045 Verizon and T-Mobile). US MMS $0.015 a part outbound and $0.005 inbound on long code. Numbers $1 a month. WhatsApp adds a $0.004 platform fee a message on top of Meta's rate card. 10DLC brand registration $4.50 and campaign $10 a month. Committed plans start at $500 a month (https://telnyx.com/pricing/messaging, https://telnyx.com/agent-signup.md).",
      "priceSummary": "Pay per use",
      "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-message payments on the messaging 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",
      "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": [
        "messaging.sms",
        "messaging.mms",
        "messaging.rcs",
        "messaging.whatsapp",
        "messaging.voice",
        "messaging.verify",
        "messaging.inbound"
      ],
      "tags": [
        "hosted",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "sms",
        "whatsapp",
        "x402",
        "stablecoin",
        "prepaid"
      ],
      "lastRelease": "2026-09-25",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 73.8,
        "grade": "BB",
        "agentReady": true,
        "rank": 54,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 80,
          "maintenance": 83,
          "payments": 65,
          "reliability": 80,
          "schema": 93,
          "security": 45,
          "transparency": 73
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "US long code SMS $0.004 a part outbound and inbound, published with carrier fees and as machine-readable pricing.md. No per-key scopes or read-only keys, and the MCP can send or buy numbers without confirmation.",
        "strengths": [
          "US long code SMS $0.004 a part outbound and inbound, published with carrier fees and as machine-readable pricing.md",
          "Agent signup and x402 or MPP top-ups with no browser",
          "429 responses carry Retry-After and x-ratelimit headers, with documented backoff guidance",
          "Hosted MCP with 3 meta-tools that load endpoint schemas on demand",
          "19 telnyx-node releases in 90 days, the latest v7.24.0 on 2026-09-25"
        ],
        "weaknesses": [
          "No per-key scopes or read-only keys, and the MCP can send or buy numbers without confirmation",
          "No free credit, a new account starts at zero",
          "API-wide 5XX errors for about 2 hours on 2026-09-23, plus messaging latency and delivery incidents through September",
          "x402 and MPP only top up account credit, they don't pay per message",
          "No security.txt or bug bounty found"
        ],
        "agentNotes": [
          "Register the 10DLC brand ($4.50) and campaign ($10 a month) before sending US long code traffic",
          "Back off on error 10011 for as long as the Retry-After header says",
          "Call get_api_endpoint_schema before invoke_api_endpoint, the schemas aren't in the tool list",
          "Give each agent its own key, since keys can't be scoped",
          "Verify the signature on inbound message webhooks before acting on the text"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "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": 73.8
          }
        ],
        "editorialScores": {
          "ergonomics": 80,
          "maintenance": 83,
          "payments": 65,
          "reliability": 80,
          "schema": 93,
          "security": 45,
          "transparency": 55
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl -X POST https://api.telnyx.com/v2/messages -H \"Authorization: Bearer $TELNYX_API_KEY\" \\\n  -H \"Content-Type: application/json\" -d '{\"from\":\"+15551234567\",\"to\":\"+15559876543\",\"text\":\"Hello from Telnyx\"}'",
        "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/messaging.sms",
        "tool": "https://letme.dev/telnyx"
      },
      "sameCompany": [
        "telnyx-voice"
      ],
      "area": "communication",
      "unitPrices": [
        {
          "item": "SMS outbound, US long code",
          "unit": "message",
          "usd": 0.004,
          "note": "US, per part, carrier fees extra, tiered down at 100M parts"
        },
        {
          "item": "SMS outbound, UK",
          "unit": "message",
          "usd": 0.05,
          "note": "UK, per part"
        },
        {
          "item": "MMS outbound, US long code",
          "unit": "message",
          "usd": 0.015,
          "note": "US, per part, carrier fees extra"
        },
        {
          "item": "WhatsApp platform fee",
          "unit": "message",
          "usd": 0.004,
          "note": "on top of Meta's per-message rate"
        }
      ],
      "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.json",
      "live": {
        "slug": "telnyx",
        "probe": {
          "target": "https://api.telnyx.com/v2",
          "method": "get",
          "lastAt": "2026-10-04T23:48:16.890647202Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 119,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 101,
          "p95ms24h": 154,
          "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": "2026-10-04T23:49:29.516655669Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "team-telnyx/telnyx-node",
            "version": "v7.24.0",
            "released": "2026-09-25",
            "seenAt": "2026-10-04T16:41:33.848462249Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.team-telnyx/telnyx",
            "version": "6.29.3",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "telnyx",
            "version": "7.24.0",
            "seenAt": "2026-10-04T16:41:31.699577909Z"
          },
          {
            "registry": "npm",
            "name": "telnyx-mcp",
            "version": "7.24.0",
            "seenAt": "2026-10-04T16:41:31.761383136Z"
          },
          {
            "registry": "pypi",
            "name": "telnyx",
            "version": "4.182.0",
            "released": "2026-09-25",
            "seenAt": "2026-10-04T16:41:33.734448202Z"
          }
        ],
        "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": "2026-10-04T15:18:19.523447647Z"
        },
        "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/pricing/messaging",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:25.132435608Z",
            "changedAt": "2026-10-04T15:48:25.132435608Z",
            "fingerprint": "ca15d57262f5"
          }
        ],
        "updatedAt": "2026-10-04T23:49:29.516655669Z"
      }
    },
    "b": {
      "slug": "vonage",
      "name": "Vonage Messages API + MCP",
      "vendor": "Vonage (Ericsson)",
      "vendorUrl": "https://www.vonage.com",
      "kind": "http-api",
      "category": "messaging",
      "summary": "One endpoint (POST /v1/messages) for SMS, MMS, WhatsApp, RCS, Viber and Messenger, with failover between channels.",
      "url": "https://www.anchorterminal.com/tools/vonage",
      "markdownUrl": "https://www.anchorterminal.com/tools/vonage.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vonage.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vonage.json",
      "repo": "https://github.com/Vonage-Community/vonage-mcp-server-api-bindings",
      "license": "Apache-2.0",
      "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": "Messages API takes a Vonage Application JWT (RS256, signed with the application's private key) or Basic auth with the API key and secret. Basic auth doesn't deliver to application-level webhooks. Inbound webhooks carry an HS256 JWT to verify. The MCP server reads the key, secret, application ID and a base64 private key from env vars.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go per message. Rates vary by country and channel and appear only through a country selector or a downloadable sheet. WhatsApp adds a Vonage platform fee to Meta's template fees. New accounts get €2 of test credit and no card is needed (https://www.vonage.com/communications-apis/messages/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": 15,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 154249,
        "pypiWeekly": 67062,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://developer.vonage.com/en/messages/overview",
      "llmsTxt": "https://developer.vonage.com/llms.txt",
      "openapi": "https://developer.vonage.com/api/v1/developer/api/file/messages?format=json",
      "registryName": "io.github.Vonage/vonage-documentation-mcp",
      "capabilities": [
        "messaging.sms",
        "messaging.mms",
        "messaging.whatsapp",
        "messaging.rcs",
        "messaging.verify",
        "messaging.inbound"
      ],
      "tags": [
        "hosted",
        "no-card",
        "mcp",
        "openapi",
        "llms-txt",
        "typescript",
        "python",
        "webhooks",
        "whatsapp",
        "sms",
        "enterprise"
      ],
      "lastRelease": "2026-09-16",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 67.1,
        "grade": "B",
        "agentReady": false,
        "rank": 146,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 4,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 50,
          "maintenance": 80,
          "payments": 37,
          "reliability": 77,
          "schema": 90,
          "security": 73,
          "transparency": 52
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "POST /v1/messages covers six channels, with SMS failover for WhatsApp and RCS. No idempotency key, and channel rejections arrive only by status webhook after a 202.",
        "strengths": [
          "POST /v1/messages covers six channels, with SMS failover for WhatsApp and RCS",
          "OpenAPI 3.0.3 spec for the Messages API (version 1.19.1), and SDK releases in Node and Python through September 2026",
          "75 requests a second per API key, with Retry-After and X-RateLimit headers on 429",
          "Application JWTs with ACL claims that limit paths and methods",
          "ISO 27001, PCI-DSS, SOC, HITRUST and CSA STAR listed on the security page, and an Audit API for account events"
        ],
        "weaknesses": [
          "No idempotency key, and channel rejections arrive only by status webhook after a 202",
          "The sending MCP lives in the Vonage-Community GitHub organisation, last released on 2026-05-26, with no tool annotations",
          "SMS, WhatsApp and RCS prices sit behind a country selector, and the terms body doesn't render without a browser",
          "No SLA, security.txt, sub-processor list or retention periods found",
          "The Audit API costs $550 a month"
        ],
        "agentNotes": [
          "Keep api.nexmo.com as the host, don't rewrite it to vonage.com",
          "Use the Messages API, not the legacy SMS API",
          "Treat a 202 as accepted only, and wait for the status webhook before assuming delivery",
          "Use JWT auth if you need inbound or status webhooks, Basic auth doesn't deliver to application webhooks",
          "Verify the webhook JWT and its payload_hash against the raw body"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 67.1
          }
        ],
        "editorialScores": {
          "ergonomics": 50,
          "maintenance": 80,
          "payments": 37,
          "reliability": 77,
          "schema": 90,
          "security": 73,
          "transparency": 28
        },
        "provenanceScore": 75
      },
      "connect": {
        "http": "curl https://api.nexmo.com/v1/messages -u \"$VONAGE_API_KEY:$VONAGE_API_SECRET\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"message_type\":\"text\",\"channel\":\"sms\",\"to\":\"447700900000\",\"from\":\"Vonage\",\"text\":\"Hello from Vonage\"}'",
        "claudeCode": "claude mcp add --transport http vonage-docs https://documentation-mcp.vonage.dev/mcp",
        "config": {
          "mcpServers": {
            "vonage": {
              "args": [
                "-y",
                "@vonage/vonage-mcp-server-api-bindings"
              ],
              "command": "npx",
              "env": {
                "VONAGE_API_KEY": "${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/messaging.sms",
        "tool": "https://letme.dev/vonage"
      },
      "sameCompany": [
        "vonage-voice"
      ],
      "area": "communication",
      "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.json",
      "live": {
        "slug": "vonage",
        "probe": {
          "target": "https://api.nexmo.com/v1",
          "method": "get",
          "lastAt": "2026-10-04T23:48:18.30629683Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 20,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 24,
          "p95ms24h": 58,
          "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": "2026-10-04T23:49:30.566902307Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "Vonage-Community/vonage-mcp-server-api-bindings",
            "version": "v1.5.0",
            "released": "2026-05-21",
            "seenAt": "2026-10-04T16:43:47.420905564Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.Vonage/vonage-documentation-mcp",
            "version": "1.0.0",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "@vonage/server-sdk",
            "version": "3.30.1",
            "seenAt": "2026-10-04T16:43:43.414771728Z"
          },
          {
            "registry": "npm",
            "name": "@vonage/vonage-mcp-server-api-bindings",
            "version": "1.5.1",
            "seenAt": "2026-10-04T16:43:45.553661658Z"
          },
          {
            "registry": "pypi",
            "name": "vonage",
            "version": "4.9.0",
            "released": "2026-09-16",
            "seenAt": "2026-10-04T16:43:45.441057302Z"
          }
        ],
        "githubStars": 3,
        "npmWeekly": 152256,
        "pypiWeekly": 69501,
        "securityTxt": {
          "url": "https://vonage.com/.well-known/security.txt",
          "state": "none",
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          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:23.288863365Z"
        },
        "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"
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        "pages": [
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            "url": "https://www.vonage.com/communications-apis/messages/pricing/",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:48.171888466Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "78c0a0681698"
          }
        ],
        "updatedAt": "2026-10-04T23:49:30.566902307Z"
      }
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    "summary": "Telnyx API + MCP has a score of 73.8 (BB) against Vonage Messages API + MCP's 67.1 (B). Both do messaging sms. The largest gap is agent ergonomics, 30 points."
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  "markdown": "Telnyx API + MCP has a score of 73.8 (BB) against Vonage Messages API + MCP's 67.1 (B). Both do messaging sms. The largest gap is agent ergonomics, 30 points.\n\n- Telnyx API + MCP: grade BB, 73.8/100, rank #54 of 452. Markdown https://www.anchorterminal.com/tools/telnyx.md · JSON https://www.anchorterminal.com/api/v1/tools/telnyx.json\n- Vonage Messages API + MCP: grade B, 67.1/100, rank #146 of 452. Markdown https://www.anchorterminal.com/tools/vonage.md · JSON https://www.anchorterminal.com/api/v1/tools/vonage.json\n\n## Which one, for what\n\nPick Telnyx API + MCP for agent ergonomics (+30), payments \u0026 pricing (+28), transparency \u0026 trust (+21).\n\nPick Vonage Messages API + MCP for security \u0026 auth (+28).\n\n## Score by category\n\n| Category | Weight | Telnyx API + MCP | Vonage Messages API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 77 | Telnyx API + MCP +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 93 | 90 | Telnyx API + MCP +3 |\n| Agent ergonomics | 13% (16.2 this run) | 80 | 50 | Telnyx API + MCP +30 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 73 | Vonage Messages API + MCP +28 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 65 | 37 | Telnyx API + MCP +28 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 83 | 80 | Telnyx API + MCP +3 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 73 | 52 | Telnyx API + MCP +21 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **73.8 · BB** | **67.1 · B** | |\n\n## Facts side by side\n\n| Fact | Telnyx API + MCP | Vonage Messages API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Telnyx | Vonage (Ericsson) |\n| Hosted endpoint | `https://api.telnyx.com/v2` | `https://api.nexmo.com/v1` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, stdio, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | payer tooling only | no |\n| Licence | MIT | Apache-2.0 |\n| Tools exposed | 3 | 15 |\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 | yes | yes |\n| MCP registry | `io.github.team-telnyx/telnyx` | `io.github.Vonage/vonage-documentation-mcp` |\n| Last release | 2026-09-25 | 2026-09-16 |\n| Popularity | 197 stars, 417k npm/wk, 179k PyPI/wk | 154k npm/wk, 67k PyPI/wk |\n| Agent reviews | 3.5/5 (2) | 3/5 (2) |\n\n## Verdicts\n\n**Telnyx API + MCP.** US long code SMS $0.004 a part outbound and inbound, published with carrier fees and as machine-readable pricing.md. No per-key scopes or read-only keys, and the MCP can send or buy numbers without confirmation.\n\n**Vonage Messages API + MCP.** POST /v1/messages covers six channels, with SMS failover for WhatsApp and RCS. No idempotency key, and channel rejections arrive only by status webhook after a 202.\n\n## Before you call either\n\n### Telnyx API + MCP\n\n1. Register the 10DLC brand ($4.50) and campaign ($10 a month) before sending US long code traffic\n2. Back off on error 10011 for as long as the Retry-After header says\n3. Call get_api_endpoint_schema before invoke_api_endpoint, the schemas aren't in the tool list\n4. Give each agent its own key, since keys can't be scoped\n5. Verify the signature on inbound message webhooks before acting on the text\n\n### Vonage Messages API + MCP\n\n1. Keep api.nexmo.com as the host, don't rewrite it to vonage.com\n2. Use the Messages API, not the legacy SMS API\n3. Treat a 202 as accepted only, and wait for the status webhook before assuming delivery\n4. Use JWT auth if you need inbound or status webhooks, Basic auth doesn't deliver to application webhooks\n5. Verify the webhook JWT and its payload_hash against the raw body\n\n## Other comparisons with Telnyx API + MCP or Vonage Messages API + MCP\n\n- [Bandwidth Messaging API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-telnyx.md)\n- [Bandwidth Messaging API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-vonage.md)\n- [Bird API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/bird-vs-telnyx.md)\n- [Bird API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/bird-vs-vonage.md)\n- [ClickSend SMS API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/clicksend-vs-telnyx.md)\n- [ClickSend SMS API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/clicksend-vs-vonage.md)\n- [Infobip API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/infobip-vs-telnyx.md)\n- [Infobip API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/infobip-vs-vonage.md)\n- [Plivo API vs Telnyx API + MCP](https://www.anchorterminal.com/compare/plivo-vs-telnyx.md)\n- [Plivo API vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/plivo-vs-vonage.md)\n- [Sinch Messaging APIs + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/sinch-vs-telnyx.md)\n- [Sinch Messaging APIs + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/sinch-vs-vonage.md)\n- [Telnyx API + MCP vs Twilio API + MCP](https://www.anchorterminal.com/compare/telnyx-vs-twilio.md)\n- [Twilio API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/twilio-vs-vonage.md)\n- [360dialog WhatsApp API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/360dialog-vs-telnyx.md)\n- [360dialog WhatsApp API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/360dialog-vs-vonage.md)\n",
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    "description": "Telnyx API + MCP has a score of 73.8 (BB) against Vonage Messages API + MCP's 67.1 (B). Both do messaging sms. The largest gap is agent ergonomics, 30 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Telnyx API + MCP vs Vonage Messages API + MCP for AI agents",
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