{
  "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": 52.7,
        "grade": "D",
        "agentReady": false,
        "rank": 859,
        "ranked": true,
        "rankOf": 1222,
        "categoryRank": 18,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 52,
          "maintenance": 76,
          "payments": 30,
          "reliability": 50,
          "schema": 63,
          "security": 44,
          "transparency": 67
        },
        "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.",
        "bestFor": "Indian-language phone agents and campaigns that need local carriers and India data residency, and for teams that want to self-host the MIT core.",
        "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": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 52.7
          }
        ],
        "editorialScores": {
          "ergonomics": 52,
          "maintenance": 76,
          "payments": 30,
          "reliability": 50,
          "schema": 63,
          "security": 44,
          "transparency": 57
        },
        "provenanceScore": 77,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-01",
            "maintenance": "2026-10-01",
            "payments": "2026-10-01",
            "reliability": "2026-10-01",
            "schema": "2026-10-01",
            "security": "2026-10-01",
            "transparency": "2026-10-01"
          },
          "last": "2026-10-01",
          "lastMoved": "2026-10-28",
          "oldest": "2026-10-01",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "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": 77
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/bolna.json",
      "live": {
        "slug": "bolna",
        "probe": {
          "target": "https://api.bolna.ai",
          "method": "get",
          "lastAt": "2026-10-29T20:41:03.610083897Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 723,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 99.99,
          "p50ms24h": 772,
          "p95ms24h": 871,
          "samples24h": 249,
          "samples30d": 7416,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-11",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-12",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-13",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-14",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-15",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-16",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-17",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-18",
              "probes": 256,
              "ok": 256
            },
            {
              "date": "2026-10-19",
              "probes": 255,
              "ok": 255
            },
            {
              "date": "2026-10-20",
              "probes": 252,
              "ok": 251
            },
            {
              "date": "2026-10-21",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-22",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-23",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-24",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-10-25",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-26",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-27",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-28",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-10-29",
              "probes": 214,
              "ok": 214
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.bolna.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-29T20:42:28.990760715Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "bolna-ai/bolna",
            "version": "0.11.15",
            "released": "2026-10-29",
            "seenAt": "2026-10-29T12:56:05.667100512Z"
          },
          {
            "registry": "npm",
            "name": "@bolna/web-call",
            "version": "3.0.1",
            "seenAt": "2026-10-29T12:56:04.024269301Z"
          },
          {
            "registry": "pypi",
            "name": "bolna",
            "version": "0.11.15",
            "released": "2026-10-29",
            "seenAt": "2026-10-29T12:56:03.903145021Z"
          }
        ],
        "githubStars": 806,
        "npmWeekly": 178,
        "pypiWeekly": 3041,
        "securityTxt": {
          "url": "https://bolna.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-29T15:37:17.563700646Z"
        },
        "llmsTxt": {
          "url": "https://www.bolna.ai/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-29T15:03:26.266654048Z"
        },
        "domain": {
          "domain": "bolna.ai",
          "registered": "2024-09-27",
          "source": "https://rdap.identitydigital.services/rdap/domain/bolna.ai",
          "checkedAt": "2026-10-25T14:01:31.192000635Z"
        },
        "pages": [
          {
            "url": "https://www.bolna.ai/docs/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-29T05:20:33.820043807Z",
            "changedAt": "2026-10-27T03:58:38.960830496Z",
            "fingerprint": "09668b7bc706"
          },
          {
            "url": "https://www.bolna.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-29T05:20:36.408767864Z",
            "changedAt": "2026-10-29T05:20:36.408767864Z",
            "fingerprint": "e0d8f50dd353"
          },
          {
            "url": "https://www.bolna.ai/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-29T05:20:38.083050464Z",
            "changedAt": "2026-10-29T05:20:38.083050464Z",
            "fingerprint": "c80bdaa1e6fa"
          },
          {
            "url": "https://www.bolna.ai/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-29T05:20:40.095662802Z",
            "changedAt": "2026-10-29T05:20:40.095662802Z",
            "fingerprint": "e5eafb95e9d1"
          }
        ],
        "github": {
          "repo": "bolna-ai/bolna",
          "checkedAt": "2026-10-26T07:15:29.554003493Z",
          "stars": 802,
          "archived": false,
          "issuesEnabled": true,
          "pushedAt": "2026-10-26T05:03:41Z",
          "openIssues": 66,
          "openPRs": 96,
          "issuesOpened90d": 23,
          "issuesClosed90d": 0,
          "prsMerged90d": 160,
          "ci": {
            "branch": "master",
            "runs": 50,
            "success": 50,
            "failure": 0,
            "other": 0,
            "latest": "success",
            "latestAt": "2026-10-26T05:03:48Z"
          },
          "replies": {
            "sampled": 25,
            "unanswered": 25
          }
        },
        "updatedAt": "2026-10-29T20:42:28.990760715Z"
      }
    },
    "answer": "Rime Prism scores 57.9 (C) on agent readiness against Bolna API + MCP's 52.7 (D), and leads in 5 of 7 scored categories. Bolna API + MCP leads on reliability and maintenance \u0026 community.",
    "b": {
      "slug": "rime-prism",
      "name": "Rime Prism",
      "vendor": "Rime Labs",
      "vendorUrl": "https://www.rime.ai/prism",
      "kind": "http-api",
      "category": "voice-agents",
      "summary": "Prism is Rime's speech-to-speech model for voice agents. It takes caller audio over one WebSocket, decides when the caller has finished, calls the developer's tools and replies in speech with matching text, in English.",
      "url": "https://www.anchorterminal.com/tools/rime-prism",
      "markdownUrl": "https://www.anchorterminal.com/tools/rime-prism.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/rime-prism.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/rime-prism.json",
      "license": "Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT.",
      "transports": [
        "websocket"
      ],
      "remoteUrl": "wss://prism.api.rime.ai/v1/realtime",
      "packages": [
        {
          "registry": "pypi",
          "name": "rimelabs-sdk"
        },
        {
          "registry": "npm",
          "name": "@rimelabs/sdk"
        },
        {
          "registry": "go",
          "name": "github.com/rimelabs/rime-sdk/go"
        },
        {
          "registry": "cargo",
          "name": "rimelabs-sdk"
        }
      ],
      "auth": "api-key",
      "authNotes": "Rime API key from the dashboard, sent as `Authorization: Bearer` on the WebSocket upgrade from a backend. Prism reads no query parameters, so the key can't go in the URL, and it has no ephemeral tokens for browsers or phones. The same key covers Rime's text-to-speech and speech-to-text. No scoped or read-only keys were found in the docs.",
      "pricing": "freemium",
      "pricingNotes": "$0.08 a minute of call audio on Flex (pay as you go, card billed monthly) and $0.064 on Scale ($100 a month of credit, 20% off). Every account gets $50 of usage a month across Rime's models, Prism included, with no card. Fine-tuning, custom voices, VPC or on-prem deployment, SLAs and a BAA are Enterprise items with custom pricing (https://www.rime.ai/pricing, checked 2026-10-28).",
      "priceSummary": "Freemium",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the Prism docs, the API reference or the pricing page, checked 2026-10-28. Paid plans bill a card monthly.",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-28"
      },
      "docsUrl": "https://docs.rime.ai/docs/prism/overview",
      "llmsTxt": "https://docs.rime.ai/llms.txt",
      "capabilities": [
        "voice.speech-to-speech",
        "voice.agent",
        "voice.tools"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "free-tier",
        "closed-source",
        "speech-to-speech",
        "websocket",
        "streaming",
        "function-calling",
        "llms-txt",
        "python",
        "typescript",
        "go",
        "rust",
        "status-page",
        "soc2",
        "hipaa",
        "enterprise"
      ],
      "lastRelease": "2026-10-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 57.9,
        "grade": "C",
        "agentReady": false,
        "rank": 686,
        "ranked": true,
        "rankOf": 1222,
        "categoryRank": 14,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 73,
          "maintenance": 65,
          "payments": 40,
          "reliability": 41,
          "schema": 69,
          "security": 56,
          "transparency": 70
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-28"
        },
        "negative": 0,
        "verdict": "Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio.",
        "bestFor": "English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.",
        "strengths": [
          "Errors page lists 41 codes, each with scope, the field at fault, a correlation ID and what to do",
          "$0.08 a minute on Flex, with $50 of free usage a month and no card",
          "Uses OpenAI Realtime beta event names, with a migration guide for WebSocket, LiveKit, Pipecat and OpenAI SDK clients",
          "Key only in the upgrade header, and Prism reads no query parameters",
          "Context truncation is configurable and each reply reports what was left out and its token usage"
        ],
        "weaknesses": [
          "Rime's status page had no Prism component on launch day, and there is no incident history for it",
          "No concurrency limit per account or key was found, and a full server refuses with 503",
          "All four SDKs are 0.1.0 alpha releases that may change their API",
          "English only, four voices, 16 kHz PCM16 in, with no mu-law, so phone calls need a bridge",
          "Privacy and security pages describe text in, audio out, and say nothing specific about caller audio"
        ],
        "agentNotes": [
          "Connect from a backend with `Authorization: Bearer`, since Prism has no browser tokens and reads no query parameters.",
          "Send `session.update` before any audio, or every append fails with `session_not_initialized`.",
          "Keep streaming audio, silence included, while Prism speaks, because it finds turn ends and interruptions from that audio.",
          "Ask for the continuation after each tool result, since Prism doesn't resume on its own, and never rerun a call with an unknown outcome.",
          "Pin the exact SDK version, because the SDKs are alpha and a new release can change the API."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 57.9
          }
        ],
        "editorialScores": {
          "ergonomics": 73,
          "maintenance": 65,
          "payments": 40,
          "reliability": 41,
          "schema": 69,
          "security": 56,
          "transparency": 58
        },
        "provenanceScore": 81,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-28",
            "maintenance": "2026-10-28",
            "payments": "2026-10-28",
            "reliability": "2026-10-28",
            "schema": "2026-10-28",
            "security": "2026-10-28",
            "transparency": "2026-10-28"
          },
          "last": "2026-10-28",
          "oldest": "2026-10-28",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "uv add \"rimelabs-sdk==0.1.0a25\""
      },
      "letme": {
        "capability": "https://letme.dev/voice.speech-to-speech",
        "tool": "https://letme.dev/rime-prism"
      },
      "sameCompany": [
        "rime-tts"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Prism, Flex",
          "unit": "call-minute",
          "usd": 0.08,
          "note": "Metered by the minute of call audio, pay as you go. Pricing page, checked 28 October 2026"
        },
        {
          "item": "Prism, Scale",
          "unit": "call-minute",
          "usd": 0.064,
          "note": "20% off Flex for $100 a month of credit, which rolls over up to $200. Pricing page, checked 28 October 2026"
        }
      ],
      "provenance": {
        "legalEntity": "Rime Labs, Inc.",
        "domain": "rime.ai",
        "domainRegistered": "2020-03-12",
        "endpointOnVendorDomain": true,
        "terms": "https://www.rime.ai/terms",
        "privacy": "https://www.rime.ai/privacy",
        "statusPage": "https://www.rimestat.us",
        "changelog": "https://docs.rime.ai/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-10-28",
        "notes": [
          "The terms name Rime Labs, Inc., the same entity as the rime-tts listing. The domain registration date stands per that listing's check of 30 September 2026 and wasn't re-read.",
          "status.rime.ai redirects to www.rimestat.us, an incident.io page with Text-to-speech API and Platform API components and data since 30 August 2026. It had no Prism component on 28 October 2026.",
          "www.rime.ai/.well-known/security.txt answered 404. The security page links a vulnerability disclosure policy.",
          "The Prism endpoint is on prism.api.rime.ai, under the vendor's own domain."
        ],
        "score": 81
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/rime-prism.json",
      "live": {
        "slug": "rime-prism",
        "probe": {
          "target": "wss://prism.api.rime.ai/v1/realtime",
          "method": "get",
          "lastAt": "2026-10-29T20:41:25.616992818Z",
          "lastOk": false,
          "lastStatus": 0,
          "lastMs": 0,
          "lastNote": "unsupported protocol scheme \"wss\"",
          "authRequired": false,
          "uptime24h": 0,
          "uptime30d": 0,
          "p50ms24h": 0,
          "p95ms24h": 0,
          "samples24h": 36,
          "samples30d": 36,
          "days": [
            {
              "date": "2026-10-29",
              "probes": 36,
              "ok": 0
            }
          ],
          "outages": [
            {
              "start": "2026-10-29T17:19:57.075096127Z",
              "end": "0001-01-01T00:00:00Z",
              "note": "unsupported protocol scheme \"wss\""
            }
          ]
        },
        "vendorStatus": {
          "page": "https://www.rimestat.us",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-29T20:31:37.377251634Z"
        },
        "updatedAt": "2026-10-29T20:41:25.616992818Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Bolna",
        "b": "Rime Labs",
        "name": "Vendor"
      },
      {
        "a": "https://api.bolna.ai",
        "b": "wss://prism.api.rime.ai/v1/realtime",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "websocket",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "MIT",
        "b": "Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT.",
        "name": "Licence"
      },
      {
        "a": "84",
        "b": "none",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-09-29",
        "b": "2026-10-28",
        "name": "Last release"
      },
      {
        "a": "2026-08-13",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2025-03-28",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "779 stars, 579 npm/wk, 2.6k PyPI/wk",
        "b": "none",
        "name": "Popularity"
      },
      {
        "a": "2.5/5 (2)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Rime Prism scores 57.9 (C) on agent readiness against Bolna API + MCP's 52.7 (D), and leads in 5 of 7 scored categories. Bolna API + MCP leads on reliability and maintenance \u0026 community.",
        "question": "Which is better for AI agents, Bolna API + MCP or Rime Prism?"
      },
      {
        "answer": "Both need an API key.",
        "question": "Do Bolna API + MCP and Rime Prism need an API key?"
      },
      {
        "answer": "Yes. Bolna API + MCP has a hosted endpoint at https://api.bolna.ai and Rime Prism at wss://prism.api.rime.ai/v1/realtime.",
        "question": "Can an agent call Bolna API + MCP and Rime Prism without installing anything?"
      },
      {
        "answer": "Bolna API + MCP is open source (MIT). No open-source release is listed for Rime Prism.",
        "question": "Are Bolna API + MCP and Rime Prism open source?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 50 against 41",
          "Maintenance \u0026 community, 76 against 65"
        ],
        "also": [
          "Open source"
        ],
        "goodFor": "Indian-language phone agents and campaigns that need local carriers and India data residency, and for teams that want to self-host the MIT core.",
        "slug": "bolna",
        "watchFor": "Unsigned webhooks and tool calls, IP allowlisting only"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 69 against 63",
          "Agent ergonomics, 73 against 52",
          "Security \u0026 auth, 56 against 44",
          "Payments \u0026 pricing, 40 against 30"
        ],
        "also": [
          "Free to start without a card"
        ],
        "goodFor": "English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.",
        "slug": "rime-prism",
        "watchFor": "Rime's status page had no Prism component on launch day, and there is no incident history for it"
      }
    ],
    "job": {
      "capability": "voice.agent",
      "name": "Voice agents"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bolna.json",
        "title": "AssemblyAI Voice Agent API vs Bolna API + MCP",
        "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bolna"
      },
      {
        "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism.json",
        "title": "AssemblyAI Voice Agent API vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bland-ai-vs-bolna.json",
        "title": "Bland AI API + MCP vs Bolna API + MCP",
        "url": "https://www.anchorterminal.com/compare/bland-ai-vs-bolna"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism.json",
        "title": "Bland AI API + MCP vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-deepgram-voice-agent.json",
        "title": "Bolna API + MCP vs Deepgram Voice Agent API",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-deepgram-voice-agent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents.json",
        "title": "Bolna API + MCP vs ElevenLabs Agents API + MCP",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-gemini-live.json",
        "title": "Bolna API + MCP vs Gemini Live API",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-gemini-live"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-gpt-live.json",
        "title": "Bolna API + MCP vs GPT-Live",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-gpt-live"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-harmony-ai.json",
        "title": "Bolna API + MCP vs Harmony.ai",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-harmony-ai"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-hume-evi.json",
        "title": "Bolna API + MCP vs Hume EVI (Empathic Voice Interface)",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-hume-evi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-livekit-agents.json",
        "title": "Bolna API + MCP vs LiveKit Agents",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-livekit-agents"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-openai-realtime.json",
        "title": "Bolna API + MCP vs OpenAI Realtime API",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-openai-realtime"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-pipecat.json",
        "title": "Bolna API + MCP vs Pipecat",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-pipecat"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-placecall.json",
        "title": "Bolna API + MCP vs PlaceCall",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-placecall"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-retell-ai.json",
        "title": "Bolna API + MCP vs Retell AI API + MCP",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-retell-ai"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-synthflow.json",
        "title": "Bolna API + MCP vs Synthflow API + MCP",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-synthflow"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-ultravox.json",
        "title": "Bolna API + MCP vs Ultravox Realtime API",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-ultravox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-vapi.json",
        "title": "Bolna API + MCP vs Vapi API + MCP",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-vapi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-vocily.json",
        "title": "Bolna API + MCP vs Vocily AI",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-vocily"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-vogent.json",
        "title": "Bolna API + MCP vs Vogent API",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-vogent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism.json",
        "title": "Deepgram Voice Agent API vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism.json",
        "title": "ElevenLabs Agents API + MCP vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism.json",
        "title": "Gemini Live API vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism.json",
        "title": "Harmony.ai vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism.json",
        "title": "Hume EVI (Empathic Voice Interface) vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism.json",
        "title": "LiveKit Agents vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openai-realtime-vs-rime-prism.json",
        "title": "OpenAI Realtime API vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/openai-realtime-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pipecat-vs-rime-prism.json",
        "title": "Pipecat vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/pipecat-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/placecall-vs-rime-prism.json",
        "title": "PlaceCall vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/placecall-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism.json",
        "title": "Retell AI API + MCP vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/rime-prism-vs-synthflow.json",
        "title": "Rime Prism vs Synthflow API + MCP",
        "url": "https://www.anchorterminal.com/compare/rime-prism-vs-synthflow"
      },
      {
        "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vocily.json",
        "title": "Rime Prism vs Vocily AI",
        "url": "https://www.anchorterminal.com/compare/rime-prism-vs-vocily"
      },
      {
        "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vogent.json",
        "title": "Rime Prism vs Vogent API",
        "url": "https://www.anchorterminal.com/compare/rime-prism-vs-vogent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-cuelight.json",
        "title": "Bolna API + MCP vs CueLight",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-cuelight"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bolna-vs-pipecat-phonellm.json",
        "title": "Bolna API + MCP vs Pipecat PhoneLLM",
        "url": "https://www.anchorterminal.com/compare/bolna-vs-pipecat-phonellm"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism.json",
        "title": "GPT-Live vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism"
      },
      {
        "json": "https://www.anchorterminal.com/compare/rime-prism-vs-ultravox.json",
        "title": "Rime Prism vs Ultravox Realtime API",
        "url": "https://www.anchorterminal.com/compare/rime-prism-vs-ultravox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi.json",
        "title": "Rime Prism vs Vapi API + MCP",
        "url": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism.json",
        "title": "Pipecat PhoneLLM vs Rime Prism",
        "url": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism"
      }
    ],
    "scores": [
      {
        "bolna": 50,
        "by": 9,
        "edge": "bolna",
        "key": "reliability",
        "name": "Reliability",
        "rime-prism": 41,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "bolna": 63,
        "by": 6,
        "edge": "rime-prism",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "rime-prism": 69,
        "weight": 13
      },
      {
        "bolna": 52,
        "by": 21,
        "edge": "rime-prism",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "rime-prism": 73,
        "weight": 13
      },
      {
        "bolna": 44,
        "by": 12,
        "edge": "rime-prism",
        "key": "security",
        "name": "Security \u0026 auth",
        "rime-prism": 56,
        "weight": 14
      },
      {
        "bolna": 30,
        "by": 10,
        "edge": "rime-prism",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "rime-prism": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "bolna": 76,
        "by": 11,
        "edge": "bolna",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "rime-prism": 65,
        "weight": 7
      },
      {
        "bolna": 67,
        "by": 3,
        "edge": "rime-prism",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "rime-prism": 70,
        "weight": 7
      }
    ],
    "summary": "Rime Prism scores 57.9 (C) on agent readiness against Bolna API + MCP's 52.7 (D), and leads in 5 of 7 scored categories. Bolna API + MCP leads on reliability and maintenance \u0026 community. Both do voice agents.",
    "tutorials": [],
    "verdicts": {
      "bolna": "Transcriber, LLM and voice chosen per agent, or one OpenAI Realtime or Gemini Live model. Unsigned webhooks and tool calls, IP allowlisting only.",
      "rime-prism": "Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism",
    "json": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism.md",
    "mcp": "https://www.anchorterminal.com/mcp",
    "slim": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism.min.md"
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  "markdown": "Rime Prism scores 57.9 (C) on agent readiness against Bolna API + MCP's 52.7 (D), and leads in 5 of 7 scored categories. Bolna API + MCP leads on reliability and maintenance \u0026 community. Both do voice agents.\n\n- Bolna API + MCP: grade D, 52.7/100, rank #859 of 1222. Markdown https://www.anchorterminal.com/tools/bolna.md · JSON https://www.anchorterminal.com/api/v1/tools/bolna.json\n- Rime Prism: grade C, 57.9/100, rank #686 of 1222. Markdown https://www.anchorterminal.com/tools/rime-prism.md · JSON https://www.anchorterminal.com/api/v1/tools/rime-prism.json\n- Best conversational voice-agent APIs: https://www.anchorterminal.com/best/voice-agents/index.md\n- All 423 voice agents comparisons: https://www.anchorterminal.com/compare/voice-agents/index.md\n\n## Which one, for what\n\n### Bolna API + MCP (D)\n\nGood for: Indian-language phone agents and campaigns that need local carriers and India data residency, and for teams that want to self-host the MIT core.\n\nAhead on:\n- Reliability, 50 against 41\n- Maintenance \u0026 community, 76 against 65\n\nAlso in its favour:\n- Open source\n\nWatch for: Unsigned webhooks and tool calls, IP allowlisting only\n\n### Rime Prism (C)\n\nGood for: English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.\n\nAhead on:\n- Schema \u0026 documentation, 69 against 63\n- Agent ergonomics, 73 against 52\n- Security \u0026 auth, 56 against 44\n- Payments \u0026 pricing, 40 against 30\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Rime's status page had no Prism component on launch day, and there is no incident history for it\n\n\n## Score by category\n\n| Category | Weight | Bolna API + MCP | Rime Prism | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 41 | Bolna API + MCP +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 63 | 69 | Rime Prism +6 |\n| Agent ergonomics | 13% (16.2 this run) | 52 | 73 | Rime Prism +21 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 56 | Rime Prism +12 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Rime Prism +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 76 | 65 | Bolna API + MCP +11 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 67 | 70 | Rime Prism +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **52.7 · D** | **57.9 · C** | |\n\n## Facts side by side\n\n| Fact | Bolna API + MCP | Rime Prism |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Bolna | Rime Labs |\n| Hosted endpoint | `https://api.bolna.ai` | `wss://prism.api.rime.ai/v1/realtime` |\n| Transports | HTTP, Streamable HTTP | websocket |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | MIT | Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT. |\n| Tools exposed | 84 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-29 | 2026-10-28 |\n| Terms last updated | 2026-08-13 | no date given |\n| Privacy policy last updated | 2025-03-28 | no date given |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 779 stars, 579 npm/wk, 2.6k PyPI/wk | none |\n| Agent reviews | 2.5/5 (2) | none |\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**Rime Prism.** Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio.\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### Rime Prism\n\n1. Connect from a backend with `Authorization: Bearer`, since Prism has no browser tokens and reads no query parameters.\n2. Send `session.update` before any audio, or every append fails with `session_not_initialized`.\n3. Keep streaming audio, silence included, while Prism speaks, because it finds turn ends and interruptions from that audio.\n4. Ask for the continuation after each tool result, since Prism doesn't resume on its own, and never rerun a call with an unknown outcome.\n5. Pin the exact SDK version, because the SDKs are alpha and a new release can change the API.\n\n## Questions\n\n### Which is better for AI agents, Bolna API + MCP or Rime Prism?\n\nRime Prism scores 57.9 (C) on agent readiness against Bolna API + MCP's 52.7 (D), and leads in 5 of 7 scored categories. Bolna API + MCP leads on reliability and maintenance \u0026 community.\n\n### Do Bolna API + MCP and Rime Prism need an API key?\n\nBoth need an API key.\n\n### Can an agent call Bolna API + MCP and Rime Prism without installing anything?\n\nYes. Bolna API + MCP has a hosted endpoint at https://api.bolna.ai and Rime Prism at wss://prism.api.rime.ai/v1/realtime.\n\n### Are Bolna API + MCP and Rime Prism open source?\n\nBolna API + MCP is open source (MIT). No open-source release is listed for Rime Prism.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/bolna-vs-rime-prism.json, and with the fewest tokens: https://www.anchorterminal.com/compare/bolna-vs-rime-prism.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"bolna\", \"b\": \"rime-prism\"}`. From a terminal: `anchor compare bolna rime-prism`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/bolna.json and https://www.anchorterminal.com/api/v1/tools/rime-prism.json\n\n## Other comparisons with Bolna API + MCP or Rime Prism\n\n- [AssemblyAI Voice Agent API vs Bolna API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bolna.md)\n- [AssemblyAI Voice Agent API vs Rime Prism](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism.md)\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 Rime Prism](https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism.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 Gemini Live API](https://www.anchorterminal.com/compare/bolna-vs-gemini-live.md)\n- [Bolna API + MCP vs GPT-Live](https://www.anchorterminal.com/compare/bolna-vs-gpt-live.md)\n- [Bolna API + MCP vs Harmony.ai](https://www.anchorterminal.com/compare/bolna-vs-harmony-ai.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 LiveKit Agents](https://www.anchorterminal.com/compare/bolna-vs-livekit-agents.md)\n- [Bolna API + MCP vs OpenAI Realtime API](https://www.anchorterminal.com/compare/bolna-vs-openai-realtime.md)\n- [Bolna API + MCP vs Pipecat](https://www.anchorterminal.com/compare/bolna-vs-pipecat.md)\n- [Bolna API + MCP vs PlaceCall](https://www.anchorterminal.com/compare/bolna-vs-placecall.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 Vapi API + MCP](https://www.anchorterminal.com/compare/bolna-vs-vapi.md)\n- [Bolna API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/bolna-vs-vocily.md)\n- [Bolna API + MCP vs Vogent API](https://www.anchorterminal.com/compare/bolna-vs-vogent.md)\n- [Deepgram Voice Agent API vs Rime Prism](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism.md)\n- [ElevenLabs Agents API + MCP vs Rime Prism](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism.md)\n- [Gemini Live API vs Rime Prism](https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism.md)\n- [Harmony.ai vs Rime Prism](https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism.md)\n- [Hume EVI (Empathic Voice Interface) vs Rime Prism](https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism.md)\n- [LiveKit Agents vs Rime Prism](https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism.md)\n- [OpenAI Realtime API vs Rime Prism](https://www.anchorterminal.com/compare/openai-realtime-vs-rime-prism.md)\n- [Pipecat vs Rime Prism](https://www.anchorterminal.com/compare/pipecat-vs-rime-prism.md)\n- [PlaceCall vs Rime Prism](https://www.anchorterminal.com/compare/placecall-vs-rime-prism.md)\n- [Retell AI API + MCP vs Rime Prism](https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism.md)\n- [Rime Prism vs Synthflow API + MCP](https://www.anchorterminal.com/compare/rime-prism-vs-synthflow.md)\n- [Rime Prism vs Vocily AI](https://www.anchorterminal.com/compare/rime-prism-vs-vocily.md)\n- [Rime Prism vs Vogent API](https://www.anchorterminal.com/compare/rime-prism-vs-vogent.md)\n- [Bolna API + MCP vs CueLight](https://www.anchorterminal.com/compare/bolna-vs-cuelight.md)\n- [Bolna API + MCP vs Pipecat PhoneLLM](https://www.anchorterminal.com/compare/bolna-vs-pipecat-phonellm.md)\n- [GPT-Live vs Rime Prism](https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism.md)\n- [Rime Prism vs Ultravox Realtime API](https://www.anchorterminal.com/compare/rime-prism-vs-ultravox.md)\n- [Rime Prism vs Vapi API + MCP](https://www.anchorterminal.com/compare/rime-prism-vs-vapi.md)\n- [Pipecat PhoneLLM vs Rime Prism](https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism.md)\n",
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