{
  "data": {
    "a": {
      "slug": "bolna",
      "name": "Bolna API + MCP",
      "vendor": "Bolna",
      "vendorUrl": "https://www.bolna.ai",
      "kind": "http-api",
      "category": "voice-agents",
      "summary": "Voice-agent platform built for Indian languages and phone campaigns.",
      "url": "https://www.anchorterminal.com/tools/bolna",
      "markdownUrl": "https://www.anchorterminal.com/tools/bolna.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/bolna.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/bolna.json",
      "repo": "https://github.com/bolna-ai/bolna",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.bolna.ai",
      "packages": [
        {
          "registry": "pypi",
          "name": "bolna"
        },
        {
          "registry": "npm",
          "name": "@bolna/web-call"
        }
      ],
      "auth": "api-key",
      "authNotes": "Bearer API key (`bn-...`, or `sa-...` for a sub-account) from the dashboard, shown once and stored hashed. The hosted MCP at `https://mcp.bolna.ai/api/mcp` takes the same key as a Bearer header, and every MCP tool accepts an `api_key` argument to act as a sub-account. The Web Call SDK mints single-use browser sessions that expire in about 120 seconds, so the key stays server-side. Webhooks and tool calls carry no signature. Bolna says to allowlist its 3 source IPs instead.",
      "pricing": "usage",
      "pricingNotes": "Prepaid wallet from $10 to $5,000 with $5 free credit at signup. Standard rate $0.06 a minute (₹5.52) covers Voice AI on the preferred STT, LLM and TTS models, falling to about $0.045 on larger top-ups. Telephony and a Bolna platform fee are billed on top, and non-preferred models are billed per use. Pilot plans are one-off, $300 for 6,500 minutes or $500 for 12,000 minutes, billed in 30-second pulses with 25 concurrent calls. Bringing your own STT, LLM and TTS keys leaves only the platform fee and telephony. Enterprise is custom (https://www.bolna.ai/pricing).",
      "priceSummary": "Pay per use",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 84,
      "popularity": {
        "githubStars": 779,
        "npmWeekly": 579,
        "pypiWeekly": 2601,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://www.bolna.ai/docs",
      "llmsTxt": "https://www.bolna.ai/docs/llms.txt",
      "capabilities": [
        "voice.agent",
        "voice.pipeline",
        "voice.speech-to-speech",
        "voice.tools",
        "voice.telephony"
      ],
      "tags": [
        "hosted",
        "open-source",
        "self-hosted",
        "mcp",
        "llms-txt",
        "python",
        "typescript",
        "webhooks",
        "pipeline",
        "speech-to-speech",
        "enterprise"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 52.9,
        "grade": "D",
        "agentReady": false,
        "rank": 339,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 8,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 52,
          "maintenance": 76,
          "payments": 30,
          "reliability": 50,
          "schema": 63,
          "security": 44,
          "transparency": 70
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Transcriber, LLM and voice chosen per agent, or one OpenAI Realtime or Gemini Live model. Unsigned webhooks and tool calls, IP allowlisting only.",
        "strengths": [
          "Transcriber, LLM and voice chosen per agent, or one OpenAI Realtime or Gemini Live model",
          "Indian telephony through Plivo, Exotel and Vobiz, with an India data-residency option in ap-south-1",
          "Hosted MCP server with 84 tools, 23 of them carrying `destructiveHint`",
          "MIT-licensed core framework, released to PyPI almost daily",
          "Published per-endpoint rate limits with 429 and backoff guidance"
        ],
        "weaknesses": [
          "Unsigned webhooks and tool calls, IP allowlisting only",
          "No security.txt, bug bounty or SOC 2 claim found",
          "The OpenAPI link in llms.txt returns 404",
          "Telephony and platform fees aren't priced on the pricing page",
          "Terms and privacy policy name different legal entities"
        ],
        "agentNotes": [
          "Wait for the `completed` execution status, not `call-disconnected`, before reading cost, recording or extracted data",
          "Send `scheduled_at` with a numeric offset such as `+00:00`, since a `Z` suffix returns 500",
          "Back off exponentially on 429, the limit on `/call` is 500 requests a minute",
          "Reject webhook and tool requests that don't come from 13.203.39.153, 13.126.9.249 or 13.202.133.53",
          "Leave the MCP `api_key` argument empty unless acting as a sub-account, so the key stays out of the transcript"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 52.9
          }
        ],
        "editorialScores": {
          "ergonomics": 52,
          "maintenance": 76,
          "payments": 30,
          "reliability": 50,
          "schema": 63,
          "security": 44,
          "transparency": 57
        },
        "provenanceScore": 82
      },
      "connect": {
        "http": "curl -X POST https://api.bolna.ai/call -H \"Authorization: Bearer $BOLNA_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"agent_id\":\"123e4567-e89b-12d3-a456-426655440000\",\"recipient_phone_number\":\"+919876543210\"}'",
        "claudeCode": "claude mcp add --transport http bolna https://mcp.bolna.ai/api/mcp --header \"Authorization: Bearer $BOLNA_API_KEY\"",
        "config": {
          "mcpServers": {
            "bolna": {
              "args": [
                "-y",
                "mcp-remote",
                "https://mcp.bolna.ai/api/mcp",
                "--header",
                "Authorization: Bearer ${BOLNA_API_KEY}"
              ],
              "command": "npx"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/voice.agent",
        "tool": "https://letme.dev/bolna"
      },
      "area": "voice",
      "unitPrices": [
        {
          "item": "Standard rate, preferred models",
          "unit": "call-minute",
          "usd": 0.06,
          "note": "Voice AI only, telephony and platform fee extra"
        },
        {
          "item": "Pilot plan, 12,000 minutes",
          "unit": "call-minute",
          "usd": 0.042,
          "note": "one-off $500, 25 concurrent calls"
        },
        {
          "item": "Pilot plan, 6,500 minutes",
          "unit": "call-minute",
          "usd": 0.046,
          "note": "one-off $300"
        }
      ],
      "provenance": {
        "legalEntity": "Voxlabs Private Limited",
        "domain": "bolna.ai",
        "domainRegistered": "2024-09-27",
        "domainNote": "The registry date is later than Bolna's first PyPI release (2024-01-01), so the domain was probably re-registered. Support mail also uses bolna.dev.",
        "endpointOnVendorDomain": true,
        "terms": "https://www.bolna.ai/terms-of-service",
        "privacy": "https://www.bolna.ai/privacy-policy",
        "statusPage": "https://status.bolna.ai",
        "changelog": "https://www.bolna.ai/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The terms name Voxlabs Private Limited, operating as Bolna. The privacy policy (updated 2025-03-28) and the site footer name Whismurwave Inc."
        ],
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/bolna.json",
      "live": {
        "slug": "bolna",
        "probe": {
          "target": "https://api.bolna.ai",
          "method": "get",
          "lastAt": "2026-10-05T00:15:20.536341081Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 722,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 741,
          "p95ms24h": 819,
          "samples24h": 272,
          "samples30d": 1105,
          "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": 3,
              "ok": 3
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.bolna.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:39:52.03506865Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "bolna-ai/bolna",
            "version": "0.10.269",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:22:32.734659247Z"
          },
          {
            "registry": "npm",
            "name": "@bolna/web-call",
            "version": "3.0.1",
            "seenAt": "2026-10-04T16:22:31.875037371Z"
          },
          {
            "registry": "pypi",
            "name": "bolna",
            "version": "0.10.269",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:22:31.685913882Z"
          }
        ],
        "githubStars": 782,
        "npmWeekly": 364,
        "pypiWeekly": 1824,
        "securityTxt": {
          "url": "https://bolna.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:00.262891241Z"
        },
        "llmsTxt": {
          "url": "https://www.bolna.ai/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:21.76090737Z"
        },
        "domain": {
          "domain": "bolna.ai",
          "registered": "2024-09-27",
          "source": "https://rdap.identitydigital.services/rdap/domain/bolna.ai",
          "checkedAt": "2026-10-04T13:07:18.917906737Z"
        },
        "pages": [
          {
            "url": "https://www.bolna.ai/docs/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:30.073496597Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "0db7b7c8de51"
          },
          {
            "url": "https://www.bolna.ai/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:49:32.473331376Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "edeeeb6accdd"
          },
          {
            "url": "https://www.bolna.ai/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:49:34.270339558Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "0f8133e9e865"
          },
          {
            "url": "https://www.bolna.ai/terms-of-service",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:49:36.239918073Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "561e3b6c9a44"
          }
        ],
        "updatedAt": "2026-10-05T00:15:20.536341081Z"
      }
    },
    "b": {
      "slug": "vapi",
      "name": "Vapi API + MCP",
      "vendor": "Vapi",
      "vendorUrl": "https://vapi.ai",
      "kind": "http-api",
      "category": "voice-agents",
      "summary": "Developer platform for phone and web voice agents.",
      "url": "https://www.anchorterminal.com/tools/vapi",
      "markdownUrl": "https://www.anchorterminal.com/tools/vapi.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vapi.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vapi.json",
      "repo": "https://github.com/VapiAI/mcp-server",
      "license": "MIT (MCP server)",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.vapi.ai",
      "packages": [
        {
          "registry": "npm",
          "name": "@vapi-ai/server-sdk"
        },
        {
          "registry": "npm",
          "name": "@vapi-ai/web"
        },
        {
          "registry": "pypi",
          "name": "vapi_server_sdk"
        },
        {
          "registry": "npm",
          "name": "@vapi-ai/mcp-server"
        }
      ],
      "auth": "api-key",
      "authNotes": "Private API key as a bearer token for the REST API and the hosted MCP server at `https://mcp.vapi.ai/mcp` (an SSE endpoint also exists). A separate public key is for browser calls with the Web SDK. The local MCP server reads `VAPI_TOKEN`.",
      "pricing": "usage",
      "pricingNotes": "Usage only is $0.05 a minute Vapi hosting, plus transcriber, model, voice and telephony at provider cost, prepaid with $5 of free credits to start. Vapi telephony, SIP, WebSockets and WebRTC transport are free, Twilio inbound runs $0.008 a minute and outbound $0.014. Success Packages add support and limits on top of usage, Core $29 a month and Pro 10 per cent of the hosting fee with a $999 monthly minimum. Add-ons include HIPAA at $2,000 a month and extra concurrent lines at $10 a line a month. The vendor's calculator puts 1,000 minutes with Deepgram, OpenAI and ElevenLabs at roughly $0.08 to $0.13 a minute all in (https://vapi.ai/pricing).",
      "priceSummary": "$29 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 20,
      "popularity": {
        "githubStars": 57,
        "npmWeekly": 177088,
        "pypiWeekly": 42248,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.vapi.ai",
      "llmsTxt": "https://docs.vapi.ai/llms.txt",
      "openapi": "https://api.vapi.ai/api-json",
      "capabilities": [
        "voice.agent",
        "voice.pipeline",
        "voice.speech-to-speech",
        "voice.tools",
        "voice.telephony"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "streaming",
        "pipeline",
        "speech-to-speech",
        "enterprise"
      ],
      "lastRelease": "2026-09-21",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 63.7,
        "grade": "B",
        "agentReady": false,
        "rank": 198,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 64,
          "maintenance": 88,
          "payments": 35,
          "reliability": 70,
          "schema": 89,
          "security": 58,
          "transparency": 76
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-06-03. A compromised developer GitHub token was used to push malicious code to Vapi repositories and publish four malicious `@vapi-ai/server-sdk` versions (0.11.1, 0.11.2, 1.2.1, 1.2.2) to npm. Vapi says they were removed within about three hours with zero downloads and no customer data exposed, and it published a write-up. Fixed and documented, so we deduct 4 of a possible 15 (https://vapi.ai/blog/our-response-to-june-3-supply-chain-incident)."
        ],
        "verdict": "Voice agents can combine supported transcription, model and voice providers, including customer-supplied endpoints. Per-minute cost depends on the selected providers.",
        "strengths": [
          "Any mix of transcriber, model and voice provider, or your own keys and endpoints",
          "OpenAPI file, llms.txt and a weekly changelog",
          "Public keys limited to allowed origins and assistants",
          "99 per cent uptime SLA on the Pro package, 99.9 per cent on Premier",
          "Versioned assistants and tools with draft and publish since August 2026"
        ],
        "weaknesses": [
          "Real per-minute cost depends on provider choices",
          "Usage only has 4 concurrent lines and 14 days of retention",
          "MCP tools that place calls or buy numbers carry no annotations",
          "No request rate limits or Retry-After guidance found",
          "Malicious SDK versions reached npm for about three hours on 3 June 2026"
        ],
        "agentNotes": [
          "Read `subscriptionLimits.concurrencyBlocked` in the `POST /call` response, a full account queues the call rather than failing",
          "Confirm with a person before `vapi_create_call` or `vapi_buy_phone_number`, the server won't ask",
          "Pin transcriber, model and voice and set fallback plans so one provider outage doesn't drop calls",
          "Read the call log's cost breakdown to see what each provider charged",
          "Check `@vapi-ai/server-sdk` isn't pinned to 0.11.1, 0.11.2, 1.2.1 or 1.2.2"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 63.7
          }
        ],
        "editorialScores": {
          "ergonomics": 64,
          "maintenance": 88,
          "payments": 35,
          "reliability": 70,
          "schema": 89,
          "security": 58,
          "transparency": 70
        },
        "provenanceScore": 82
      },
      "connect": {
        "http": "curl https://api.vapi.ai/call -H \"Authorization: Bearer $VAPI_API_KEY\" \\\n  -H \"content-type: application/json\" \\\n  -d '{\"assistantId\":\"\u003cassistant-id\u003e\",\"phoneNumberId\":\"\u003cphone-number-id\u003e\",\"customer\":{\"number\":\"+15551234567\"}}'",
        "claudeCode": "claude mcp add --transport http vapi https://mcp.vapi.ai/mcp --header \"Authorization: Bearer $VAPI_API_KEY\"",
        "config": {
          "mcpServers": {
            "vapi": {
              "args": [
                "-y",
                "@vapi-ai/mcp-server"
              ],
              "command": "npx",
              "env": {
                "VAPI_TOKEN": "${VAPI_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/voice.agent",
        "tool": "https://letme.dev/vapi"
      },
      "area": "voice",
      "unitPrices": [
        {
          "item": "Vapi hosting",
          "unit": "call-minute",
          "usd": 0.05,
          "note": "platform fee only, transcriber, model, voice and telephony billed on top at cost"
        },
        {
          "item": "Twilio outbound transport",
          "unit": "call-minute",
          "usd": 0.014,
          "note": "US, passed through"
        },
        {
          "item": "Twilio inbound transport",
          "unit": "call-minute",
          "usd": 0.008,
          "note": "US, passed through"
        },
        {
          "item": "Core Success Package",
          "unit": "month",
          "usd": 29
        },
        {
          "item": "Pro Success Package minimum",
          "unit": "month",
          "usd": 999,
          "note": "10 per cent of hosting fees, $999 minimum"
        },
        {
          "item": "Extra concurrent call line",
          "unit": "month",
          "usd": 10
        },
        {
          "item": "HIPAA add-on",
          "unit": "month",
          "usd": 2000
        }
      ],
      "provenance": {
        "legalEntity": "Vapi Inc.",
        "domain": "vapi.ai",
        "domainRegistered": "2023-08-22",
        "endpointOnVendorDomain": true,
        "terms": "https://vapi.ai/terms-of-service",
        "privacy": "https://vapi.ai/privacy",
        "statusPage": "https://status.vapi.ai",
        "changelog": "https://docs.vapi.ai/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The terms name Vapi Inc., a Delaware corporation."
        ],
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/vapi.json",
      "live": {
        "slug": "vapi",
        "probe": {
          "target": "https://api.vapi.ai",
          "method": "get",
          "lastAt": "2026-10-05T00:15:32.007885248Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 188,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 190,
          "p95ms24h": 551,
          "samples24h": 272,
          "samples30d": 1105,
          "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": 3,
              "ok": 3
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.vapi.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:32.91562276Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "VapiAI/mcp-server",
            "version": "v0.0.11",
            "released": "2026-08-14",
            "seenAt": "2026-10-04T16:43:12.477208468Z"
          },
          {
            "registry": "npm",
            "name": "@vapi-ai/mcp-server",
            "version": "0.0.11",
            "seenAt": "2026-10-04T16:43:10.657227109Z"
          },
          {
            "registry": "npm",
            "name": "@vapi-ai/server-sdk",
            "version": "2.0.1",
            "seenAt": "2026-10-04T16:43:06.847289486Z"
          },
          {
            "registry": "npm",
            "name": "@vapi-ai/web",
            "version": "2.7.1",
            "seenAt": "2026-10-04T16:43:09.259416721Z"
          },
          {
            "registry": "pypi",
            "name": "vapi_server_sdk",
            "version": "1.11.1",
            "released": "2026-05-20",
            "seenAt": "2026-10-04T16:43:10.468923211Z"
          }
        ],
        "githubStars": 57,
        "npmWeekly": 205182,
        "pypiWeekly": 39699,
        "securityTxt": {
          "url": "https://vapi.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:46.43020372Z"
        },
        "llmsTxt": {
          "url": "https://docs.vapi.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:23.657652287Z"
        },
        "domain": {
          "domain": "vapi.ai",
          "registered": "2023-08-22",
          "source": "https://rdap.identitydigital.services/rdap/domain/vapi.ai",
          "checkedAt": "2026-10-04T13:10:12.103273987Z"
        },
        "pages": [
          {
            "url": "https://docs.vapi.ai/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:13.606342765Z",
            "changedAt": "2026-10-03T15:32:20.588337898Z",
            "fingerprint": "ec991822798a"
          },
          {
            "url": "https://docs.vapi.ai/whats-new",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-01T13:13:04.652536748Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "8b20b96ab7a4"
          },
          {
            "url": "https://docs.vapi.ai/workflows/legacy-migration",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:25.802628589Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "9f62a32477a4"
          },
          {
            "url": "https://vapi.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:41.681772611Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f3c0afec077f"
          },
          {
            "url": "https://vapi.ai/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:43.888276245Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f13594373bcf"
          },
          {
            "url": "https://vapi.ai/terms-of-service",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:45.895499196Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "4b1fd29445f7"
          }
        ],
        "updatedAt": "2026-10-05T00:15:32.007885248Z"
      }
    },
    "summary": "Vapi API + MCP has a score of 63.7 (B) against Bolna API + MCP's 52.9 (D). Both do voice agent. The largest gap is schema \u0026 documentation, 26 points."
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  "markdown": "Vapi API + MCP has a score of 63.7 (B) against Bolna API + MCP's 52.9 (D). Both do voice agent. The largest gap is schema \u0026 documentation, 26 points.\n\n- Bolna API + MCP: grade D, 52.9/100, rank #339 of 452. Markdown https://www.anchorterminal.com/tools/bolna.md · JSON https://www.anchorterminal.com/api/v1/tools/bolna.json\n- Vapi API + MCP: grade B, 63.7/100, rank #198 of 452. Markdown https://www.anchorterminal.com/tools/vapi.md · JSON https://www.anchorterminal.com/api/v1/tools/vapi.json\n\n## Which one, for what\n\nPick Bolna API + MCP for nothing in particular (no category where it leads by five points or more).\n\nPick Vapi API + MCP for reliability (+20), schema \u0026 documentation (+26), agent ergonomics (+12), security \u0026 auth (+14), payments \u0026 pricing (+5), maintenance \u0026 community (+12), transparency \u0026 trust (+6).\n\n## Score by category\n\n| Category | Weight | Bolna API + MCP | Vapi API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 70 | Vapi API + MCP +20 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 63 | 89 | Vapi API + MCP +26 |\n| Agent ergonomics | 13% (16.2 this run) | 52 | 64 | Vapi API + MCP +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 58 | Vapi API + MCP +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Vapi API + MCP +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 76 | 88 | Vapi API + MCP +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 76 | Vapi API + MCP +6 |\n| Negative events | ≤15 | 0 | -4 | |\n| **Total** | | **52.9 · D** | **63.7 · B** | |\n\n## Facts side by side\n\n| Fact | Bolna API + MCP | Vapi API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Bolna | Vapi |\n| Hosted endpoint | `https://api.bolna.ai` | `https://api.vapi.ai` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | MIT | MIT (MCP server) |\n| Tools exposed | 84 | 20 |\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 | not listed | not listed |\n| Last release | 2026-09-29 | 2026-09-21 |\n| Popularity | 779 stars, 579 npm/wk, 2.6k PyPI/wk | 57 stars, 177k npm/wk, 42k PyPI/wk |\n| Agent reviews | 2.5/5 (2) | 2.5/5 (2) |\n\n## Verdicts\n\n**Bolna API + MCP.** Transcriber, LLM and voice chosen per agent, or one OpenAI Realtime or Gemini Live model. Unsigned webhooks and tool calls, IP allowlisting only.\n\n**Vapi API + MCP.** Voice agents can combine supported transcription, model and voice providers, including customer-supplied endpoints. Per-minute cost depends on the selected providers.\n\n## Before you call either\n\n### Bolna API + MCP\n\n1. Wait for the `completed` execution status, not `call-disconnected`, before reading cost, recording or extracted data\n2. Send `scheduled_at` with a numeric offset such as `+00:00`, since a `Z` suffix returns 500\n3. Back off exponentially on 429, the limit on `/call` is 500 requests a minute\n4. Reject webhook and tool requests that don't come from 13.203.39.153, 13.126.9.249 or 13.202.133.53\n5. Leave the MCP `api_key` argument empty unless acting as a sub-account, so the key stays out of the transcript\n\n### Vapi API + MCP\n\n1. Read `subscriptionLimits.concurrencyBlocked` in the `POST /call` response, a full account queues the call rather than failing\n2. Confirm with a person before `vapi_create_call` or `vapi_buy_phone_number`, the server won't ask\n3. Pin transcriber, model and voice and set fallback plans so one provider outage doesn't drop calls\n4. Read the call log's cost breakdown to see what each provider charged\n5. Check `@vapi-ai/server-sdk` isn't pinned to 0.11.1, 0.11.2, 1.2.1 or 1.2.2\n\n## Other comparisons with Bolna API + MCP or Vapi API + MCP\n\n- [Bland AI API + MCP vs Bolna API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-bolna.md)\n- [Bland AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-vapi.md)\n- [Bolna API + MCP vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/bolna-vs-deepgram-voice-agent.md)\n- [Bolna API + MCP vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents.md)\n- [Bolna API + MCP vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/bolna-vs-hume-evi.md)\n- [Bolna API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bolna-vs-retell-ai.md)\n- [Bolna API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/bolna-vs-synthflow.md)\n- [Bolna API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/bolna-vs-ultravox.md)\n- [Bolna API + MCP vs Vogent API](https://www.anchorterminal.com/compare/bolna-vs-vogent.md)\n- [Deepgram Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi.md)\n- [ElevenLabs Agents API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi.md)\n- [Hume EVI (Empathic Voice Interface) vs Vapi API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-vapi.md)\n- [Retell AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-vapi.md)\n- [Synthflow API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/synthflow-vs-vapi.md)\n- [Ultravox Realtime API vs Vapi API + MCP](https://www.anchorterminal.com/compare/ultravox-vs-vapi.md)\n- [Vapi API + MCP vs Vogent API](https://www.anchorterminal.com/compare/vapi-vs-vogent.md)\n",
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    "description": "Vapi API + MCP has a score of 63.7 (B) against Bolna API + MCP's 52.9 (D). Both do voice agent. The largest gap is schema \u0026 documentation, 26 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Bolna API + MCP vs Vapi API + MCP for AI agents, D 52.9 vs B 63.7",
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