{
  "data": {
    "a": {
      "slug": "photon",
      "name": "Photon",
      "vendor": "Photon",
      "vendorUrl": "https://photon.codes",
      "kind": "sdk",
      "category": "messaging",
      "summary": "Photon connects AI agents to iMessage, WhatsApp Business, Telegram and SIP voice through its spectrum-ts TypeScript SDK and managed iMessage lines. Photon 2.0, a public beta since 15 October 2026, adds an HTTP API that also covers email and SMS.",
      "url": "https://www.anchorterminal.com/tools/photon",
      "markdownUrl": "https://www.anchorterminal.com/tools/photon.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/photon.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/photon.json",
      "repo": "https://github.com/photon-hq/spectrum-ts",
      "license": "Proprietary hosted service under Something Great Inc.'s terms of service. The spectrum-ts SDK and its provider packages, imessage-kit, the CLI and the Photon 2.0 API clients are MIT",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://spectrum.photon.codes",
      "packages": [
        {
          "registry": "npm",
          "name": "spectrum-ts"
        },
        {
          "registry": "npm",
          "name": "@photon-ai/cli"
        },
        {
          "registry": "npm",
          "name": "@photon-ai/api"
        },
        {
          "registry": "pypi",
          "name": "photonhq-api"
        }
      ],
      "auth": "api-key",
      "authNotes": "The Stable Spectrum API takes the project ID and project secret as HTTP Basic credentials. The secret grants full management access to the project, doesn't expire on its own and is rotated with `photon projects regenerate-secret`. The SDK uses the same pair to mint per-line iMessage tokens, renewed at 80 per cent of their lifetime. The Dashboard API takes OAuth 2.1 tokens with PKCE and consented scopes, and the CLI logs in by a device flow approved in a browser, with a 7-day token. Photon 2.0 (Beta) uses separate bearer credentials with permissions, `pho_sk_` project keys and `pho_ask_` account service keys.",
      "pricing": "freemium",
      "pricingNotes": "Plan prices with no per-message fee for iMessage. Free is $0 for up to 10 users on shared numbers, Pro $25 a month for up to 100 users, Business $250 per dedicated line a month, and Enterprise on request (https://photon.codes/pricing, checked 2026-10-16). Whether the Free plan needs a card wasn't established. The Photon 2.0 beta has its own plans and usage rates for SMS, MMS, voice and email, and its announcement claims $100 of free credit.",
      "priceSummary": "$25 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in llms.txt, llms-full.txt, the docs pages read, the pricing page, the terms or either OpenAPI document (checked 2026-10-16). Billing runs through Stripe checkout and the Stripe customer portal.",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 107087,
        "pypiWeekly": null,
        "asOf": "2026-10-16"
      },
      "docsUrl": "https://photon.codes/docs",
      "llmsTxt": "https://photon.codes/docs/llms.txt",
      "openapi": "https://spectrum.photon.codes/openapi/json",
      "capabilities": [
        "messaging.sms",
        "messaging.rcs",
        "messaging.whatsapp",
        "messaging.inbound",
        "voice.sip"
      ],
      "tags": [
        "hosted",
        "imessage",
        "whatsapp",
        "telegram",
        "sms",
        "rcs",
        "sip",
        "voice",
        "sdk",
        "typescript",
        "cli",
        "webhooks",
        "llms-txt",
        "openapi",
        "oauth",
        "opentelemetry",
        "open-source-sdk",
        "self-hosted-option",
        "status-page"
      ],
      "lastRelease": "2026-10-15",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 53.5,
        "grade": "D",
        "agentReady": false,
        "rank": 757,
        "ranked": true,
        "rankOf": 1098,
        "categoryRank": 12,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 63,
          "maintenance": 78,
          "payments": 20,
          "reliability": 68,
          "schema": 75,
          "security": 29,
          "transparency": 58
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-16"
        },
        "negative": -2,
        "negativeNotes": [
          "2026-10-16. The iMessage platform page states '99.95% Uptime' and infrastructure 'built for speed, stability, and 99.999% uptime' (https://photon.codes/platform/imessage). Photon's own status page shows 99.89 per cent for each iMessage component from July to October 2026, including a 2-hour 7-minute full outage on 2 September 2026 (https://status.photon.codes, https://status.photon.codes/incidents/ry86mwnd). A misleading claim, -2."
        ],
        "verdict": "Photon runs iMessage agents on managed lines backed by its own macOS clusters, with a typed TypeScript SDK, signed webhooks and docs written for agents. Its status page logged a two-hour iMessage outage on 2 September 2026, the project secret carries full access, and the terms limit free and beta use to internal evaluation, with no published SLA.",
        "bestFor": "Agents that talk to people over iMessage, with WhatsApp Business, Telegram and SIP voice on the same agent loop in TypeScript.",
        "strengths": [
          "One `spectrum-ts` message stream covers iMessage, WhatsApp Business, Telegram and a local terminal, with typed narrowing for platform-specific calls",
          "No per-message fee for iMessage on any plan. Pro is $25 a month for up to 100 users",
          "Webhooks are signed with HMAC-SHA256 and a timestamp for a 5-minute replay window, and retried up to six times with jitter",
          "llms.txt, a Markdown twin of every docs page and a documentation MCP server, with a written rule for choosing Stable or Beta",
          "spectrum-ts is MIT, with 14 tagged releases from 20 July to 15 October 2026 and CI on Node and Bun"
        ],
        "weaknesses": [
          "The status page logged a 2-hour full iMessage outage on 2 September 2026, from a power failure at Photon's data centre",
          "The project secret grants full management access, never expires on its own and has no read-only variant",
          "The terms limit free, trial and beta use to internal evaluation, 30 days by default, with liability capped at US$50",
          "No SLA document. Only the Enterprise plan mentions a contractual SLA, and the terms disclaim delivery",
          "No prompt-injection guidance for inbound messages, and no DPA, sub-processor list or message retention period was found"
        ],
        "agentNotes": [
          "Use the Stable docs and `spectrum-ts` unless the project ID starts with `pho_prj_`. Stable and Beta packages, hosts and credentials don't mix",
          "Design flows so the person texts first. Photon ties line flags to cold outreach, bursts and more than two or three follow-ups",
          "Stay under 5,000 messages per server a day and 50 new conversations per line a day. Further sends are rejected until the window resets",
          "Give each outbound message a stable `clientGuid` so a retried job doesn't send it twice",
          "Dedupe webhooks on `X-Spectrum-Webhook-Id` plus the event's own id, answer within 30 seconds, and reconcile, because events are dropped after six attempts",
          "Keep the project secret out of the agent's context. It grants full management access and doesn't expire"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 4,
        "avgRating": 2.8,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 53.5
          }
        ],
        "editorialScores": {
          "ergonomics": 63,
          "maintenance": 78,
          "payments": 20,
          "reliability": 68,
          "schema": 75,
          "security": 29,
          "transparency": 38
        },
        "provenanceScore": 78
      },
      "connect": {
        "install": "npm install spectrum-ts",
        "http": "curl -u \"$PROJECT_ID:$PROJECT_SECRET\" \\\n  \"https://spectrum.photon.codes/projects/$PROJECT_ID/webhooks/\""
      },
      "letme": {
        "capability": "https://letme.dev/messaging.sms",
        "tool": "https://letme.dev/photon"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 25,
          "note": "Up to 100 users on shared numbers, no per-message fee for iMessage"
        },
        {
          "item": "Business plan, dedicated iMessage line",
          "unit": "month",
          "usd": 250,
          "note": "Per line. Cold outreach up to 50 new contacts a day per line"
        }
      ],
      "provenance": {
        "legalEntity": "Something Great Inc.",
        "domain": "photon.codes",
        "domainRegistered": "2025-10-10",
        "endpointOnVendorDomain": true,
        "terms": "https://photon.codes/terms-of-services",
        "privacy": "https://photon.codes/privacy-policy",
        "statusPage": "https://status.photon.codes",
        "changelog": "https://photon.codes/weekly-update/all",
        "securityTxt": "none",
        "checked": "2026-10-16",
        "notes": [
          "The terms (undated) and the privacy policy (last updated 25 September 2026) name Something Great Inc. as Photon, with a notice address at 1111B S Governors Ave, Dover, Delaware.",
          "The terms still carry bracketed template text, including '[California]' and '[San Francisco, California]' for governing law and venue, and an acceptable use policy in brackets that links to the iMessage deliverability guide.",
          "RDAP for photon.codes gives a registration date of 10 October 2025. The API is at spectrum.photon.codes, iMessage lines at hosts under imsg.photon.codes, and the Beta API at api.photon.codes.",
          "photon.codes/.well-known/security.txt returned 404 on 16 October 2026. The photon-hq/api repository's SECURITY.md asks for reports through GitHub private vulnerability reporting.",
          "The changelog link is the weekly update index, whose last entry is dated 20 June 2026. The Beta API clients keep a CHANGELOG.md in photon-hq/api.",
          "robots.txt on photon.codes allows all user agents. status.photon.codes and the API hosts serve no robots.txt. The terms have no clause on automated access to the website.",
          "WebFetch was refused for photon.codes on 16 October 2026, so every page was read with curl. github.com web pages were refused by our session's proxy, so the repositories were read through git."
        ],
        "score": 78
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/photon.json",
      "live": {
        "slug": "photon",
        "probe": {
          "target": "https://spectrum.photon.codes",
          "method": "get",
          "lastAt": "2026-10-16T12:47:22.724063915Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 213,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 219,
          "p95ms24h": 637,
          "samples24h": 29,
          "samples30d": 29,
          "days": [
            {
              "date": "2026-10-16",
              "probes": 29,
              "ok": 29
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.photon.codes",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-16T12:43:54.394910488Z"
        },
        "updatedAt": "2026-10-16T12:47:22.724063915Z"
      }
    },
    "answer": "Sendblue scores 61.7 (C) on agent readiness against Photon's 53.5 (D), and leads in 4 of 7 scored categories. Photon leads on schema \u0026 documentation and maintenance \u0026 community.",
    "b": {
      "slug": "sendblue",
      "name": "Sendblue",
      "vendor": "Round One, Inc.",
      "vendorUrl": "https://www.sendblue.com",
      "kind": "http-api",
      "category": "messaging",
      "summary": "Sendblue is a hosted API from Round One, Inc. for sending and receiving iMessage, RCS, SMS and MMS from dedicated or shared phone numbers. Agents use a REST API, TypeScript and Python SDKs, a CLI and an MCP server.",
      "url": "https://www.anchorterminal.com/tools/sendblue",
      "markdownUrl": "https://www.anchorterminal.com/tools/sendblue.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sendblue.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sendblue.json",
      "repo": "https://github.com/sendblue-api/sendblue-ts",
      "license": "Proprietary service under Round One, Inc.'s terms of service. The TypeScript and Python SDKs and the MCP server are Apache-2.0, and the CLI is MIT",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://api.sendblue.com",
      "packages": [
        {
          "registry": "npm",
          "name": "sendblue"
        },
        {
          "registry": "pypi",
          "name": "sendblue"
        },
        {
          "registry": "npm",
          "name": "sendblue-api-mcp"
        },
        {
          "registry": "npm",
          "name": "@sendblue/cli"
        }
      ],
      "auth": "api-key",
      "authNotes": "Every request carries the account's key pair in the `sb-api-key-id` and `sb-api-secret-key` headers, and requests from a browser are refused. The keys come from the dashboard or from `sendblue show-keys` after the CLI creates the account, which needs a person to text a one-time code or enter an email code. `POST /v3/auth/tokens` mints a temporary bearer token, account-wide or limited to named phone numbers, valid for 900 seconds by default and revocable. The MCP server reads `SENDBLUE_API_API_KEY` and `SENDBLUE_API_API_SECRET` from the environment. Agency subaccounts with their own keys need approval from support.",
      "pricing": "freemium",
      "pricingNotes": "Flat price per line with no per-message fee. The Free Sandbox is $0 with no card, on a shared number with up to 10 verified contacts. The AI Agent plan is $100 a month per dedicated line and is inbound-first. Proactive outbound messaging is on the Enterprise or Blue Ocean plan, priced through sales. The terms add 3 per cent for card payments and $60 per line to port a number out (https://www.sendblue.com/pricing, checked 2026-10-08).",
      "priceSummary": "$100 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs, either `llms.txt`, the pricing page or the terms (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 18,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 249505,
        "pypiWeekly": 39912,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.sendblue.com",
      "llmsTxt": "https://docs.sendblue.com/llms.txt",
      "capabilities": [
        "messaging.sms",
        "messaging.mms",
        "messaging.rcs",
        "messaging.inbound",
        "messaging.verify"
      ],
      "tags": [
        "hosted",
        "imessage",
        "sms",
        "rcs",
        "mcp",
        "cli",
        "llms-txt",
        "typescript",
        "python",
        "webhooks",
        "no-card",
        "status-page"
      ],
      "lastRelease": "2026-10-07",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 61.7,
        "grade": "C",
        "agentReady": false,
        "rank": 492,
        "ranked": true,
        "rankOf": 1098,
        "categoryRank": 9,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 76,
          "maintenance": 72,
          "payments": 40,
          "reliability": 71,
          "schema": 66,
          "security": 46,
          "transparency": 58
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "Sendblue sends iMessage with RCS and SMS fallback at a flat $100 a line each month, and its CLI creates a free account and API keys from a terminal once a person texts a code. Proactive outbound messaging is sold through sales, no OpenAPI file is published, and the MCP package the docs install dates from August 2025.",
        "bestFor": "An agent that answers people over iMessage on a US number, where blue-bubble threads, typing indicators and reactions matter and the person texts first.",
        "strengths": [
          "One request to `/api/send-message` sends iMessage and can fall back to RCS or SMS, with no per-message fee on any plan",
          "The CLI creates a free account, a shared line and API keys from a terminal, with no card, once a person texts a one-time code",
          "Temporary bearer tokens from `/v3/auth/tokens` can be limited to named phone numbers, expire after 900 seconds by default and can be revoked",
          "Every docs page has a Markdown twin at `/index.md`, and `llms.txt` summarises each page with its limits and conditions",
          "Rate limits are published with numbers for each plan, and declined sends return an `error_key` an agent can branch on"
        ],
        "weaknesses": [
          "Proactive outbound messaging needs the Blue Ocean plan, which has no public price. The $100 AI Agent plan is inbound-first",
          "No OpenAPI file was found at any public address, although the SDKs and the reference are generated from one",
          "The docs install `sendblue-api-mcp`, last published on 5 August 2025 with 18 tools. The API now has 54 configured endpoints",
          "`/api/send-message` takes no idempotency key, and the SDKs retry 429 and 5xx responses twice by default",
          "No public DPA, sub-processor list, retention period, deprecation policy or security.txt was found"
        ],
        "agentNotes": [
          "Send `from_number` on every request. Read the account's numbers from `GET /api/lines` first, because a send without it fails",
          "On the free plan a recipient must text the Sendblue number once before any message to them is accepted",
          "Before a contact's first reply keep messages under 300 characters with no links, media, phone numbers or email addresses, and stop at six",
          "Branch on `error_key` in an HTTP 400 decline and don't retry it. Only HTTP 429 clears by waiting",
          "Set `maxRetries: 0` on sends where a duplicate matters, and treat `504 outcome_unknown` on group changes as possibly applied",
          "Mint a token at `/v3/auth/tokens` limited to one phone number for a sub-agent, and keep the account key pair out of its context"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 61.7
          }
        ],
        "editorialScores": {
          "ergonomics": 76,
          "maintenance": 72,
          "payments": 40,
          "reliability": 71,
          "schema": 66,
          "security": 46,
          "transparency": 29
        },
        "provenanceScore": 86
      },
      "connect": {
        "install": "npm install sendblue",
        "http": "curl -X POST https://api.sendblue.com/api/send-message \\\n  -H \"sb-api-key-id: $SENDBLUE_API_KEY_ID\" -H \"sb-api-secret-key: $SENDBLUE_API_KEY_SECRET\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"number\":\"+19998887777\",\"from_number\":\"+18887776666\",\"content\":\"Hello from Sendblue!\"}'",
        "claudeCode": "claude mcp add sendblue_api --env SENDBLUE_API_API_KEY=your-api-key --env SENDBLUE_API_API_SECRET=your-api-secret -- npx -y sendblue-api-mcp --client=claude-code --tools=all",
        "config": {
          "mcpServers": {
            "sendblue_api": {
              "args": [
                "-y",
                "sendblue-api-mcp",
                "--tools=all"
              ],
              "command": "npx",
              "env": {
                "SENDBLUE_API_API_KEY": "your-api-key",
                "SENDBLUE_API_API_SECRET": "your-api-secret"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/messaging.sms",
        "tool": "https://letme.dev/sendblue"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "AI Agent plan, dedicated line",
          "unit": "month",
          "usd": 100,
          "note": "Per line, inbound-first, no per-message fee. Outbound plans are priced through sales"
        }
      ],
      "provenance": {
        "legalEntity": "Round One, Inc.",
        "domain": "sendblue.com",
        "domainRegistered": "2011-06-25",
        "endpointOnVendorDomain": true,
        "terms": "https://www.sendblue.com/terms-of-service",
        "privacy": "https://www.sendblue.com/privacy-policy",
        "statusPage": "https://status.sendblue.com",
        "changelog": "https://github.com/sendblue-api/sendblue-ts/blob/main/CHANGELOG.md",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms of service (effective 19 March 2025) and the privacy policy (effective 1 May 2024) both name Round One, Inc. as Sendblue. The site footer gives 344 West End Avenue, New York NY 10024.",
          "The terms cover registering for and using the services, so they govern API use. The privacy policy covers the website and the services and says Sendblue is a processor for its business customers.",
          "The API answers at api.sendblue.com, and the SDKs default to api.sendblue.co, a second domain the vendor uses.",
          "`/.well-known/security.txt` returns 404 on www.sendblue.com, docs.sendblue.com and api.sendblue.com.",
          "There is no API changelog in the docs. The changelog link is the TypeScript SDK's, whose recent entries mostly read as regenerated clients.",
          "RDAP for sendblue.com gives a registration date of 2011-06-25."
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/sendblue.json",
      "live": {
        "slug": "sendblue",
        "probe": {
          "target": "https://api.sendblue.com",
          "method": "get",
          "lastAt": "2026-10-16T12:47:26.968759044Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 717,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 729,
          "p95ms24h": 839,
          "samples24h": 253,
          "samples30d": 1927,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 50,
              "ok": 50
            },
            {
              "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": 136,
              "ok": 136
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.sendblue.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-16T10:50:15.710639321Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "sendblue-api/sendblue-ts",
            "version": "v3.20.0",
            "released": "2026-10-09",
            "seenAt": "2026-10-16T01:18:42.396551788Z"
          },
          {
            "registry": "npm",
            "name": "@sendblue/cli",
            "version": "0.10.0",
            "seenAt": "2026-10-16T01:18:40.411810582Z"
          },
          {
            "registry": "npm",
            "name": "sendblue",
            "version": "3.20.0",
            "seenAt": "2026-10-16T01:18:38.190583061Z"
          },
          {
            "registry": "npm",
            "name": "sendblue-api-mcp",
            "version": "2.0.1",
            "seenAt": "2026-10-16T01:18:39.209817487Z"
          },
          {
            "registry": "pypi",
            "name": "sendblue",
            "version": "1.32.0",
            "released": "2026-10-09",
            "seenAt": "2026-10-16T01:18:39.020168049Z"
          }
        ],
        "githubStars": 2,
        "npmWeekly": 84550,
        "pypiWeekly": 57214,
        "securityTxt": {
          "url": "https://sendblue.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-15T15:48:14.747222214Z"
        },
        "llmsTxt": {
          "url": "https://docs.sendblue.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-15T14:17:41.982169742Z"
        },
        "domain": {
          "domain": "sendblue.com",
          "registered": "2011-06-25",
          "source": "https://rdap.verisign.com/com/v1/domain/sendblue.com",
          "checkedAt": "2026-10-11T13:26:23.660860301Z"
        },
        "pages": [
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            "url": "https://raw.githubusercontent.com/sendblue-api/sendblue-ts/main/CHANGELOG.md",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-15T22:04:51.268069005Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3f314fc28e56"
          },
          {
            "url": "https://www.sendblue.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-15T22:13:50.676297377Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c6313cb3e62e"
          },
          {
            "url": "https://www.sendblue.com/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-15T22:13:52.729230647Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "13a9f496f59c"
          },
          {
            "url": "https://www.sendblue.com/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-15T22:13:54.723528351Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a3ed89c021ca"
          }
        ],
        "updatedAt": "2026-10-16T12:47:26.968759044Z"
      }
    },
    "facts": [
      {
        "a": "SDK + MCP",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Photon",
        "b": "Round One, Inc.",
        "name": "Vendor"
      },
      {
        "a": "https://spectrum.photon.codes",
        "b": "https://api.sendblue.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, stdio",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "API key",
        "name": "Auth"
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      {
        "a": "Freemium",
        "b": "Freemium",
        "name": "Pricing"
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        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary hosted service under Something Great Inc.'s terms of service. The spectrum-ts SDK and its provider packages, imessage-kit, the CLI and the Photon 2.0 API clients are MIT",
        "b": "Proprietary service under Round One, Inc.'s terms of service. The TypeScript and Python SDKs and the MCP server are Apache-2.0, and the CLI is MIT",
        "name": "Licence"
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      {
        "a": "none",
        "b": "18",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
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      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-15",
        "b": "2026-10-07",
        "name": "Last release"
      },
      {
        "a": "",
        "b": "2025-03-19",
        "name": "Terms last updated"
      },
      {
        "a": "",
        "b": "2024-05-01",
        "name": "Privacy policy last updated"
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      {
        "a": "",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
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        "a": "",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
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        "a": "107k npm/wk",
        "b": "250k npm/wk, 40k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "2.8/5 (4)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Sendblue scores 61.7 (C) on agent readiness against Photon's 53.5 (D), and leads in 4 of 7 scored categories. Photon leads on schema \u0026 documentation and maintenance \u0026 community.",
        "question": "Which is better for AI agents, Photon or Sendblue?"
      },
      {
        "answer": "Yes. Photon has a hosted endpoint at https://spectrum.photon.codes and Sendblue at https://api.sendblue.com.",
        "question": "Can an agent call Photon and Sendblue without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Schema \u0026 documentation, 75 against 66",
          "Maintenance \u0026 community, 78 against 72"
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        "slug": "photon",
        "watchFor": "The status page logged a 2-hour full iMessage outage on 2 September 2026, from a power failure at Photon's data centre"
      },
      {
        "aheadOn": [
          "Agent ergonomics, 76 against 63",
          "Security \u0026 auth, 46 against 29",
          "Payments \u0026 pricing, 40 against 20"
        ],
        "also": [
          "Runs on your own machine",
          "Free to start without a card"
        ],
        "goodFor": "An agent that answers people over iMessage on a US number, where blue-bubble threads, typing indicators and reactions matter and the person texts first.",
        "slug": "sendblue",
        "watchFor": "Proactive outbound messaging needs the Blue Ocean plan, which has no public price. The $100 AI Agent plan is inbound-first"
      }
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      "name": "SMS"
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        "url": "https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bandwidth-vs-photon.json",
        "title": "Bandwidth Messaging API + MCP vs Photon",
        "url": "https://www.anchorterminal.com/compare/bandwidth-vs-photon"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bandwidth-vs-sendblue.json",
        "title": "Bandwidth Messaging API + MCP vs Sendblue",
        "url": "https://www.anchorterminal.com/compare/bandwidth-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bird-vs-photon.json",
        "title": "Bird API + MCP vs Photon",
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      {
        "json": "https://www.anchorterminal.com/compare/bird-vs-sendblue.json",
        "title": "Bird API + MCP vs Sendblue",
        "url": "https://www.anchorterminal.com/compare/bird-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clicksend-vs-photon.json",
        "title": "ClickSend SMS API + MCP vs Photon",
        "url": "https://www.anchorterminal.com/compare/clicksend-vs-photon"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clicksend-vs-sendblue.json",
        "title": "ClickSend SMS API + MCP vs Sendblue",
        "url": "https://www.anchorterminal.com/compare/clicksend-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/infobip-vs-photon.json",
        "title": "Infobip API + MCP vs Photon",
        "url": "https://www.anchorterminal.com/compare/infobip-vs-photon"
      },
      {
        "json": "https://www.anchorterminal.com/compare/infobip-vs-sendblue.json",
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        "url": "https://www.anchorterminal.com/compare/infobip-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/photon-vs-plivo.json",
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        "url": "https://www.anchorterminal.com/compare/photon-vs-plivo"
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      {
        "json": "https://www.anchorterminal.com/compare/photon-vs-sinch.json",
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        "url": "https://www.anchorterminal.com/compare/photon-vs-sinch"
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        "json": "https://www.anchorterminal.com/compare/photon-vs-telnyx.json",
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        "url": "https://www.anchorterminal.com/compare/photon-vs-telnyx"
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        "json": "https://www.anchorterminal.com/compare/photon-vs-twilio.json",
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        "json": "https://www.anchorterminal.com/compare/photon-vs-vonage.json",
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        "url": "https://www.anchorterminal.com/compare/plivo-vs-sendblue"
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      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-sinch.json",
        "title": "Sendblue vs Sinch Messaging APIs + MCP",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-sinch"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-telnyx.json",
        "title": "Sendblue vs Telnyx API + MCP",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-telnyx"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-twilio.json",
        "title": "Sendblue vs Twilio API + MCP",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-twilio"
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      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-vonage.json",
        "title": "Sendblue vs Vonage Messages API + MCP",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-vonage"
      },
      {
        "json": "https://www.anchorterminal.com/compare/360dialog-vs-sendblue.json",
        "title": "360dialog WhatsApp API + MCP vs Sendblue",
        "url": "https://www.anchorterminal.com/compare/360dialog-vs-sendblue"
      },
      {
        "json": "https://www.anchorterminal.com/compare/photon-vs-telegram-bot.json",
        "title": "Photon vs Telegram Bot API",
        "url": "https://www.anchorterminal.com/compare/photon-vs-telegram-bot"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-telegram-bot.json",
        "title": "Sendblue vs Telegram Bot API",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-telegram-bot"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sendblue-vs-whatsapp-cloud-api.json",
        "title": "Sendblue vs WhatsApp Business Platform (Cloud API)",
        "url": "https://www.anchorterminal.com/compare/sendblue-vs-whatsapp-cloud-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/360dialog-vs-photon.json",
        "title": "360dialog WhatsApp API + MCP vs Photon",
        "url": "https://www.anchorterminal.com/compare/360dialog-vs-photon"
      },
      {
        "json": "https://www.anchorterminal.com/compare/photon-vs-whatsapp-cloud-api.json",
        "title": "Photon vs WhatsApp Business Platform (Cloud API)",
        "url": "https://www.anchorterminal.com/compare/photon-vs-whatsapp-cloud-api"
      }
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    "scores": [
      {
        "by": 3,
        "edge": "sendblue",
        "key": "reliability",
        "name": "Reliability",
        "photon": 68,
        "sendblue": 71,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 9,
        "edge": "photon",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "photon": 75,
        "sendblue": 66,
        "weight": 13
      },
      {
        "by": 13,
        "edge": "sendblue",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "photon": 63,
        "sendblue": 76,
        "weight": 13
      },
      {
        "by": 17,
        "edge": "sendblue",
        "key": "security",
        "name": "Security \u0026 auth",
        "photon": 29,
        "sendblue": 46,
        "weight": 14
      },
      {
        "by": 20,
        "edge": "sendblue",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "photon": 20,
        "sendblue": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 6,
        "edge": "photon",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "photon": 78,
        "sendblue": 72,
        "weight": 7
      },
      {
        "by": 0,
        "edge": "",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "photon": 58,
        "sendblue": 58,
        "weight": 7
      }
    ],
    "summary": "Sendblue scores 61.7 (C) on agent readiness against Photon's 53.5 (D), and leads in 4 of 7 scored categories. Photon leads on schema \u0026 documentation and maintenance \u0026 community. Both do sms.",
    "tutorials": [],
    "verdicts": {
      "photon": "Photon runs iMessage agents on managed lines backed by its own macOS clusters, with a typed TypeScript SDK, signed webhooks and docs written for agents. Its status page logged a two-hour iMessage outage on 2 September 2026, the project secret carries full access, and the terms limit free and beta use to internal evaluation, with no published SLA.",
      "sendblue": "Sendblue sends iMessage with RCS and SMS fallback at a flat $100 a line each month, and its CLI creates a free account and API keys from a terminal once a person texts a code. Proactive outbound messaging is sold through sales, no OpenAPI file is published, and the MCP package the docs install dates from August 2025."
    }
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  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
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    "json": "https://www.anchorterminal.com/compare/photon-vs-sendblue.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/photon-vs-sendblue.md",
    "mcp": "https://www.anchorterminal.com/mcp",
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  },
  "markdown": "Sendblue scores 61.7 (C) on agent readiness against Photon's 53.5 (D), and leads in 4 of 7 scored categories. Photon leads on schema \u0026 documentation and maintenance \u0026 community. Both do sms.\n\n- Photon: grade D, 53.5/100, rank #757 of 1098. Markdown https://www.anchorterminal.com/tools/photon.md · JSON https://www.anchorterminal.com/api/v1/tools/photon.json\n- Sendblue: grade C, 61.7/100, rank #492 of 1098. Markdown https://www.anchorterminal.com/tools/sendblue.md · JSON https://www.anchorterminal.com/api/v1/tools/sendblue.json\n- Best SMS, WhatsApp and messaging APIs for AI agents: https://www.anchorterminal.com/best/messaging/index.md\n- All 105 messaging comparisons: https://www.anchorterminal.com/compare/messaging/index.md\n\n## Which one, for what\n\n### Photon (D)\n\nGood for: Agents that talk to people over iMessage, with WhatsApp Business, Telegram and SIP voice on the same agent loop in TypeScript.\n\nAhead on:\n- Schema \u0026 documentation, 75 against 66\n- Maintenance \u0026 community, 78 against 72\n\nWatch for: The status page logged a 2-hour full iMessage outage on 2 September 2026, from a power failure at Photon's data centre\n\n### Sendblue (C)\n\nGood for: An agent that answers people over iMessage on a US number, where blue-bubble threads, typing indicators and reactions matter and the person texts first.\n\nAhead on:\n- Agent ergonomics, 76 against 63\n- Security \u0026 auth, 46 against 29\n- Payments \u0026 pricing, 40 against 20\n\nAlso in its favour:\n- Runs on your own machine\n- Free to start without a card\n\nWatch for: Proactive outbound messaging needs the Blue Ocean plan, which has no public price. The $100 AI Agent plan is inbound-first\n\n\n## Score by category\n\n| Category | Weight | Photon | Sendblue | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 68 | 71 | Sendblue +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 66 | Photon +9 |\n| Agent ergonomics | 13% (16.2 this run) | 63 | 76 | Sendblue +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 29 | 46 | Sendblue +17 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Sendblue +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 78 | 72 | Photon +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 58 | 58 | even |\n| Negative events | ≤15 | -2 | 0 | |\n| **Total** | | **53.5 · D** | **61.7 · C** | |\n\n## Facts side by side\n\n| Fact | Photon | Sendblue |\n| --- | --- | --- |\n| Kind | SDK + MCP | HTTP API |\n| Vendor | Photon | Round One, Inc. |\n| Hosted endpoint | `https://spectrum.photon.codes` | `https://api.sendblue.com` |\n| Transports | HTTP | HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary hosted service under Something Great Inc.'s terms of service. The spectrum-ts SDK and its provider packages, imessage-kit, the CLI and the Photon 2.0 API clients are MIT | Proprietary service under Round One, Inc.'s terms of service. The TypeScript and Python SDKs and the MCP server are Apache-2.0, and the CLI is MIT |\n| Tools exposed | none | 18 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-15 | 2026-10-07 |\n| Terms last updated |  | 2025-03-19 |\n| Privacy policy last updated |  | 2024-05-01 |\n| Customer content may train models |  | not found in the text |\n| Terms restrict automated access |  | not found in the text |\n| Terms restrict benchmarking |  | not found in the text |\n| Terms or service can change without notice |  | not found in the text |\n| Arbitration or class-action waiver |  | yes |\n| Popularity | 107k npm/wk | 250k npm/wk, 40k PyPI/wk |\n| Agent reviews | 2.8/5 (4) | none |\n\n## Verdicts\n\n**Photon.** Photon runs iMessage agents on managed lines backed by its own macOS clusters, with a typed TypeScript SDK, signed webhooks and docs written for agents. Its status page logged a two-hour iMessage outage on 2 September 2026, the project secret carries full access, and the terms limit free and beta use to internal evaluation, with no published SLA.\n\n**Sendblue.** Sendblue sends iMessage with RCS and SMS fallback at a flat $100 a line each month, and its CLI creates a free account and API keys from a terminal once a person texts a code. Proactive outbound messaging is sold through sales, no OpenAPI file is published, and the MCP package the docs install dates from August 2025.\n\n## Before you call either\n\n### Photon\n\n1. Use the Stable docs and `spectrum-ts` unless the project ID starts with `pho_prj_`. Stable and Beta packages, hosts and credentials don't mix\n2. Design flows so the person texts first. Photon ties line flags to cold outreach, bursts and more than two or three follow-ups\n3. Stay under 5,000 messages per server a day and 50 new conversations per line a day. Further sends are rejected until the window resets\n4. Give each outbound message a stable `clientGuid` so a retried job doesn't send it twice\n5. Dedupe webhooks on `X-Spectrum-Webhook-Id` plus the event's own id, answer within 30 seconds, and reconcile, because events are dropped after six attempts\n6. Keep the project secret out of the agent's context. It grants full management access and doesn't expire\n\n### Sendblue\n\n1. Send `from_number` on every request. Read the account's numbers from `GET /api/lines` first, because a send without it fails\n2. On the free plan a recipient must text the Sendblue number once before any message to them is accepted\n3. Before a contact's first reply keep messages under 300 characters with no links, media, phone numbers or email addresses, and stop at six\n4. Branch on `error_key` in an HTTP 400 decline and don't retry it. Only HTTP 429 clears by waiting\n5. Set `maxRetries: 0` on sends where a duplicate matters, and treat `504 outcome_unknown` on group changes as possibly applied\n6. Mint a token at `/v3/auth/tokens` limited to one phone number for a sub-agent, and keep the account key pair out of its context\n\n## Questions\n\n### Which is better for AI agents, Photon or Sendblue?\n\nSendblue scores 61.7 (C) on agent readiness against Photon's 53.5 (D), and leads in 4 of 7 scored categories. Photon leads on schema \u0026 documentation and maintenance \u0026 community.\n\n### Can an agent call Photon and Sendblue without installing anything?\n\nYes. Photon has a hosted endpoint at https://spectrum.photon.codes and Sendblue at https://api.sendblue.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/photon-vs-sendblue.json, and with the fewest tokens: https://www.anchorterminal.com/compare/photon-vs-sendblue.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"photon\", \"b\": \"sendblue\"}`. From a terminal: `anchor compare photon sendblue`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/photon.json and https://www.anchorterminal.com/api/v1/tools/sendblue.json\n\n## Other comparisons with Photon or Sendblue\n\n- [AWS End User Messaging vs Photon](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-photon.md)\n- [AWS End User Messaging vs Sendblue](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-sendblue.md)\n- [Bandwidth Messaging API + MCP vs Photon](https://www.anchorterminal.com/compare/bandwidth-vs-photon.md)\n- [Bandwidth Messaging API + MCP vs Sendblue](https://www.anchorterminal.com/compare/bandwidth-vs-sendblue.md)\n- [Bird API + MCP vs Photon](https://www.anchorterminal.com/compare/bird-vs-photon.md)\n- [Bird API + MCP vs Sendblue](https://www.anchorterminal.com/compare/bird-vs-sendblue.md)\n- [ClickSend SMS API + MCP vs Photon](https://www.anchorterminal.com/compare/clicksend-vs-photon.md)\n- [ClickSend SMS API + MCP vs Sendblue](https://www.anchorterminal.com/compare/clicksend-vs-sendblue.md)\n- [Infobip API + MCP vs Photon](https://www.anchorterminal.com/compare/infobip-vs-photon.md)\n- [Infobip API + MCP vs Sendblue](https://www.anchorterminal.com/compare/infobip-vs-sendblue.md)\n- [Photon vs Plivo API](https://www.anchorterminal.com/compare/photon-vs-plivo.md)\n- [Photon vs Sinch Messaging APIs + MCP](https://www.anchorterminal.com/compare/photon-vs-sinch.md)\n- [Photon vs Telnyx API + MCP](https://www.anchorterminal.com/compare/photon-vs-telnyx.md)\n- [Photon vs Twilio API + MCP](https://www.anchorterminal.com/compare/photon-vs-twilio.md)\n- [Photon vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/photon-vs-vonage.md)\n- [Plivo API vs Sendblue](https://www.anchorterminal.com/compare/plivo-vs-sendblue.md)\n- [Sendblue vs Sinch Messaging APIs + MCP](https://www.anchorterminal.com/compare/sendblue-vs-sinch.md)\n- [Sendblue vs Telnyx API + MCP](https://www.anchorterminal.com/compare/sendblue-vs-telnyx.md)\n- [Sendblue vs Twilio API + MCP](https://www.anchorterminal.com/compare/sendblue-vs-twilio.md)\n- [Sendblue vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/sendblue-vs-vonage.md)\n- [360dialog WhatsApp API + MCP vs Sendblue](https://www.anchorterminal.com/compare/360dialog-vs-sendblue.md)\n- [Photon vs Telegram Bot API](https://www.anchorterminal.com/compare/photon-vs-telegram-bot.md)\n- [Sendblue vs Telegram Bot API](https://www.anchorterminal.com/compare/sendblue-vs-telegram-bot.md)\n- [Sendblue vs WhatsApp Business Platform (Cloud API)](https://www.anchorterminal.com/compare/sendblue-vs-whatsapp-cloud-api.md)\n- [360dialog WhatsApp API + MCP vs Photon](https://www.anchorterminal.com/compare/360dialog-vs-photon.md)\n- [Photon vs WhatsApp Business Platform (Cloud API)](https://www.anchorterminal.com/compare/photon-vs-whatsapp-cloud-api.md)\n",
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