{
  "data": {
    "a": {
      "slug": "courier",
      "name": "Courier",
      "vendor": "Courier",
      "vendorUrl": "https://www.courier.com",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Notification API that routes one message to email, SMS, push, an in-app Inbox, Slack, Microsoft Teams and WhatsApp through your own providers, with templates, digests, preferences and journeys.",
      "url": "https://www.anchorterminal.com/tools/courier",
      "markdownUrl": "https://www.anchorterminal.com/tools/courier.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/courier.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/courier.json",
      "repo": "https://github.com/trycourier/courier-node",
      "license": "Apache-2.0 (Node SDK)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.courier.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@trycourier/courier"
        },
        {
          "registry": "pypi",
          "name": "trycourier"
        }
      ],
      "auth": "api-key",
      "authNotes": "Workspace API key as `Authorization: Bearer \u003ckey\u003e` on the REST API. The hosted MCP at mcp.courier.com takes the key in an `api_key` header, with no OAuth. A JWT endpoint issues tokens for client SDKs such as the Inbox.",
      "pricing": "freemium",
      "pricingNotes": "Developer plan free for up to 10,000 sends a month. Business is pay as you go at $0.005 a send. Enterprise is custom with volume discounts. Billing counts notifications sent, not seats or channels (https://www.courier.com/docs/overview.md). Support is email on Developer, adds chat on Business, and Enterprise adds a shared Slack channel and an SLA (https://www.courier.com/docs/resources/help.md).",
      "priceSummary": "Freemium",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": 170,
      "popularity": {
        "githubStars": 63,
        "npmWeekly": 189029,
        "pypiWeekly": 35385,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://www.courier.com/docs",
      "llmsTxt": "https://www.courier.com/docs/llms.txt",
      "openapi": "https://www.courier.com/docs/openapi-specs/openapi.documented.yml",
      "registryName": "io.github.trycourier/courier",
      "capabilities": [
        "notify.push",
        "notify.in-app",
        "notify.multichannel",
        "notify.preferences",
        "notify.digest"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "enterprise"
      ],
      "lastRelease": "2026-09-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 70.5,
        "grade": "BB",
        "agentReady": true,
        "rank": 151,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 68,
          "maintenance": 86,
          "payments": 35,
          "reliability": 92,
          "schema": 84,
          "security": 56,
          "transparency": 65
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode.",
        "bestFor": "A product team that wants simple per-send billing and one API across many providers, and for agents that only send.",
        "strengths": [
          "Free for 10,000 sends a month, then $0.005 a send with no platform fee",
          "`POST /send` has no request-count rate limit, and the limited endpoints publish their numbers",
          "Idempotency keys replay for 25 hours by default and up to a year",
          "Public OpenAPI file, llms.txt with about 230 Markdown pages, and an agent skill",
          "Status page with no incidents posted since 18 June 2026"
        ],
        "weaknesses": [
          "170 MCP tools with no toolsets, filtering or read-only mode",
          "MCP authentication is a raw API key header with no OAuth or scopes",
          "Error responses documented only as `message` and `type`, with no list of codes",
          "Audit trail of key and template changes is Enterprise only",
          "No subprocessor list, data regions or retention periods in the privacy policy"
        ],
        "agentNotes": [
          "Send an `Idempotency-Key` header on every send so a retry doesn't notify twice",
          "Set `routing.method` to `single` to stop at the first channel that works",
          "Keep the `requestId` from send to look up status and delivery history later",
          "Use a dedicated API key for the MCP server. Every one of the 170 tools runs with that key's full rights",
          "Space resends at least 2 seconds apart per message or you get a 429"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 70.5
          }
        ],
        "editorialScores": {
          "ergonomics": 68,
          "maintenance": 86,
          "payments": 35,
          "reliability": 92,
          "schema": 84,
          "security": 56,
          "transparency": 40
        },
        "provenanceScore": 89
      },
      "connect": {
        "http": "curl -X POST https://api.courier.com/send \\\n  -H \"Authorization: Bearer $COURIER_API_KEY\" -H \"Content-Type: application/json\" \\\n  -H \"Idempotency-Key: build-42\" \\\n  -d '{\"message\":{\"to\":{\"user_id\":\"user_123\"},\"content\":{\"title\":\"Build finished\",\"body\":\"All tests passed\"},\"routing\":{\"method\":\"single\",\"channels\":[\"push\",\"email\"]}}}'",
        "claudeCode": "claude mcp add --transport http courier https://mcp.courier.com --header \"api_key: $COURIER_API_KEY\"",
        "config": {
          "mcpServers": {
            "courier": {
              "headers": {
                "api_key": "${COURIER_API_KEY}"
              },
              "type": "http",
              "url": "https://mcp.courier.com"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/courier"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Business send",
          "unit": "message",
          "usd": 0.005,
          "note": "Pay as you go after 10,000 free sends"
        }
      ],
      "provenance": {
        "legalEntity": "trycourier.com, Inc.",
        "domain": "courier.com",
        "domainRegistered": "1993-09-09",
        "domainNote": "courier.com was registered in 1993, long before Courier launched, so the domain was bought later.",
        "endpointOnVendorDomain": true,
        "terms": "https://www.courier.com/terms",
        "privacy": "https://www.courier.com/privacy-policy",
        "statusPage": "https://status.courier.com",
        "changelog": "https://www.courier.com/changelog/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms are governed by California law and give 143 2nd St, San Francisco, as the address.",
          "Certifications and data handling are published separately at security.courier.com."
        ],
        "score": 89
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/courier.json",
      "live": {
        "slug": "courier",
        "probe": {
          "target": "https://api.courier.com",
          "method": "get",
          "lastAt": "2026-10-10T03:53:24.447543995Z",
          "lastOk": true,
          "lastStatus": 403,
          "lastMs": 147,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 142,
          "p95ms24h": 403,
          "samples24h": 249,
          "samples30d": 2274,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "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": 40,
              "ok": 40
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.courier.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-10T03:58:12.908737856Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "trycourier/courier-node",
            "version": "v9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-09T16:47:45.07510074Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.trycourier/courier",
            "version": "1.3.7",
            "seenAt": "2026-10-10T03:11:32.438759038Z"
          },
          {
            "registry": "npm",
            "name": "@trycourier/courier",
            "version": "9.11.0",
            "seenAt": "2026-10-09T16:47:43.968327213Z"
          },
          {
            "registry": "pypi",
            "name": "trycourier",
            "version": "9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-09T16:47:44.875251567Z"
          }
        ],
        "githubStars": 63,
        "npmWeekly": 168191,
        "pypiWeekly": 44403,
        "securityTxt": {
          "url": "https://courier.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-09T15:39:19.459772536Z"
        },
        "llmsTxt": {
          "url": "https://www.courier.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-09T14:01:44.256560521Z"
        },
        "domain": {
          "domain": "courier.com",
          "registered": "1993-09-09",
          "source": "https://rdap.verisign.com/com/v1/domain/courier.com",
          "checkedAt": "2026-10-04T13:09:59.714592295Z"
        },
        "pages": [
          {
            "url": "https://www.courier.com/changelog/",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-09T18:49:19.557704702Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cda43798db5a"
          },
          {
            "url": "https://www.courier.com/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-09T18:49:21.82768206Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e9b84df4985f"
          },
          {
            "url": "https://www.courier.com/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-09T18:49:23.637998765Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "15732fe78cb9"
          }
        ],
        "updatedAt": "2026-10-10T03:58:12.908737856Z"
      }
    },
    "answer": "Courier scores 70.5 (BB) on agent readiness against Expo Push Notifications's 58.8 (C), and leads in 5 of 7 scored categories. Expo Push Notifications leads on payments \u0026 pricing.",
    "b": {
      "slug": "expo-push-notifications",
      "name": "Expo Push Notifications",
      "vendor": "Expo",
      "vendorUrl": "https://expo.dev",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Hosted push service from Expo that takes one HTTPS request and relays it to Apple's APNs and Google's FCM for apps built with Expo. It issues push tickets and receipts, and sending is free.",
      "url": "https://www.anchorterminal.com/tools/expo-push-notifications",
      "markdownUrl": "https://www.anchorterminal.com/tools/expo-push-notifications.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/expo-push-notifications.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/expo-push-notifications.json",
      "repo": "https://github.com/expo/expo-server-sdk-node",
      "license": "Proprietary service under Expo's terms of service. The Node.js server SDK is MIT",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://exp.host/--/api/v2/push/send",
      "packages": [
        {
          "registry": "npm",
          "name": "expo-server-sdk"
        }
      ],
      "auth": "mixed",
      "authNotes": "No credential by default. The docs say the API \"currently does not require any authentication\", and a send needs only an Expo push token. An owner can turn on enhanced push security in the EAS dashboard, after which every call needs `Authorization: Bearer \u003caccess token\u003e` or fails with `UNAUTHORIZED`. Tokens are personal access tokens, which act on everything the person can reach, or robot user tokens limited by role. Both are created and revoked by a person in the dashboard.",
      "pricing": "free",
      "pricingNotes": "Free. The push FAQ says there is no cost for sending through the service, and the pricing page lists no push charge. A send needs an Expo project with APNs and FCM credentials, which a person sets up on an Expo account. The Free plan is $0 a month, Starter $19 and Production $199, and those prices buy builds and updates, not push. Whether signup asks for a card was not stated.",
      "priceSummary": "Free",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the push docs, the pricing page or the Node SDK source (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 1037,
        "npmWeekly": 1348515,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://docs.expo.dev/push-notifications/sending-notifications/",
      "llmsTxt": "https://docs.expo.dev/llms.txt",
      "capabilities": [
        "notify.push"
      ],
      "tags": [
        "hosted",
        "free",
        "push",
        "no-key",
        "llms-txt",
        "typescript",
        "closed-source",
        "status-page",
        "soc2"
      ],
      "lastRelease": "2026-08-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 58.8,
        "grade": "C",
        "agentReady": false,
        "rank": 571,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 9,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 63,
          "maintenance": 74,
          "payments": 40,
          "reliability": 65,
          "schema": 60,
          "security": 48,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": 0,
        "verdict": "A free push relay with a small, well documented HTTP API, published limits of 600 notifications a second and written error codes. Sending needs no credential unless the owner turns on access tokens, there is no idempotency key or SLA, and the status page records three iOS push incidents since 4 August 2026.",
        "bestFor": "An agent that must push to an app already built with Expo, at no cost and with one call for both platforms.",
        "strengths": [
          "One POST to `https://exp.host/--/api/v2/push/send` reaches both APNs and FCM, with up to 100 messages a request",
          "Sending is free, per the push FAQ, and the Free plan costs $0 a month",
          "Limits are published. 600 notifications a second per project, 100 messages a request, 1,000 receipt IDs a request",
          "Docs are served as Markdown with an `llms.txt` index, and every message field is mapped to its APNs or FCM equivalent",
          "Expo states notification content is held only in memory and queues until handed to Apple or Google"
        ],
        "weaknesses": [
          "The send API needs no authentication by default, so anyone holding a push token can send to that device until the owner enables access tokens",
          "No idempotency key. Expo says a notification may reach Apple or Google more than once, or not at all",
          "No SLA for the push service, stated in the docs",
          "Three iOS push incidents on the status page since 4 August 2026, one a partial outage of 83 minutes and one a backlog of 4 hours 41 minutes",
          "No OpenAPI file or push API changelog was found, and only the Node.js SDK is maintained by Expo",
          "Expo's terms say accounts registered by bots, agents or other automated means are not permitted. This matters before any probe is run"
        ],
        "agentNotes": [
          "Send an array of up to 100 messages per request, all for one project, and stay under 600 notifications a second",
          "Keep each ticket `id` and POST them to `/--/api/v2/push/getReceipts` about 15 minutes later. Receipts are cleared after 24 hours",
          "Stop sending to a token when a ticket or receipt returns `DeviceNotRegistered`",
          "If the project has enhanced push security on, send `Authorization: Bearer \u003caccess token\u003e` or the call fails with `UNAUTHORIZED`",
          "Retry 429 and 5xx with exponential backoff, and expect an occasional duplicate because there is no idempotency key"
        ],
        "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": 58.8
          }
        ],
        "editorialScores": {
          "ergonomics": 63,
          "maintenance": 74,
          "payments": 40,
          "reliability": 65,
          "schema": 60,
          "security": 48,
          "transparency": 60
        },
        "provenanceScore": 76
      },
      "connect": {
        "install": "yarn add expo-server-sdk",
        "http": "curl -H \"Content-Type: application/json\" -X POST \"https://exp.host/--/api/v2/push/send\" -d '{\n  \"to\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"title\":\"hello\",\n  \"body\": \"world\"\n}'"
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/expo-push-notifications"
      },
      "area": "everyday",
      "provenance": {
        "legalEntity": "650 Industries, Inc.",
        "domain": "expo.dev",
        "domainRegistered": "2019-02-22",
        "endpointOnVendorDomain": false,
        "terms": "https://expo.dev/terms",
        "privacy": "https://expo.dev/privacy",
        "statusPage": "https://status.expo.dev",
        "changelog": "https://github.com/expo/expo-server-sdk-node/blob/main/CHANGELOG.md",
        "securityTxt": "valid",
        "checked": "2026-10-09",
        "notes": [
          "The terms (last updated 29 May 2025, effective 30 June 2025) are a contract with 650 Industries, Inc. and cover any product or service Expo makes available. They list EAS Build, Update, Submit, Hosting and Workflows by name and do not name the push service.",
          "The push API answers at exp.host, a second domain. Expo's docs and its Node SDK source name that host.",
          "expo.dev/.well-known/security.txt gives vulnerability-disclosures@expo.dev and a Canonical line and has no Expires field, which RFC 9116 requires.",
          "The privacy policy (last updated 21 October 2025) says Expo may collect end users' push tokens when the push service is used.",
          "expo.dev/robots.txt disallows `/expo-subscription-agreement`, so that agreement was not read.",
          "The registry's RDAP record for expo.dev gives a registration date of 2019-02-22. The changelog link is the Node SDK's, because no changelog for the push API itself was found."
        ],
        "score": 76
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/expo-push-notifications.json",
      "live": {
        "slug": "expo-push-notifications",
        "probe": {
          "target": "https://exp.host/--/api/v2/push/send",
          "method": "get",
          "lastAt": "2026-10-10T03:53:27.098677639Z",
          "lastOk": true,
          "lastStatus": 405,
          "lastMs": 434,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 127,
          "p95ms24h": 197,
          "samples24h": 125,
          "samples30d": 125,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 40,
              "ok": 40
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.expo.dev",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-10T03:58:19.44575714Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "expo/expo-server-sdk-node",
            "version": "v7.2.0",
            "released": "2026-08-24",
            "seenAt": "2026-10-09T16:52:32.455380467Z"
          },
          {
            "registry": "npm",
            "name": "expo-server-sdk",
            "version": "7.2.0",
            "seenAt": "2026-10-09T16:52:31.59453516Z"
          }
        ],
        "githubStars": 1037,
        "npmWeekly": 1348515,
        "pages": [
          {
            "url": "https://raw.githubusercontent.com/expo/expo-server-sdk-node/main/CHANGELOG.md",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:45:09.224081599Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "851125e2dd50"
          },
          {
            "url": "https://expo.dev/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-09T18:39:14.02772659Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "42bd6fab5bc9"
          },
          {
            "url": "https://expo.dev/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:39:16.223165435Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d061e1a55580"
          }
        ],
        "updatedAt": "2026-10-10T03:58:19.44575714Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Courier",
        "b": "Expo",
        "name": "Vendor"
      },
      {
        "a": "https://api.courier.com",
        "b": "https://exp.host/--/api/v2/push/send",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Free",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Apache-2.0 (Node SDK)",
        "b": "Proprietary service under Expo's terms of service. The Node.js server SDK is MIT",
        "name": "Licence"
      },
      {
        "a": "170",
        "b": "none",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "io.github.trycourier/courier",
        "b": "not listed",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-24",
        "b": "2026-08-24",
        "name": "Last release"
      },
      {
        "a": "2026-09-10",
        "b": "2025-05-29",
        "name": "Terms last updated"
      },
      {
        "a": "2025-12-08",
        "b": "2025-10-21",
        "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": "yes",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "63 stars, 189k npm/wk, 35k PyPI/wk",
        "b": "1k stars, 1.3M npm/wk",
        "name": "Popularity"
      },
      {
        "a": "3/5 (2)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Courier scores 70.5 (BB) on agent readiness against Expo Push Notifications's 58.8 (C), and leads in 5 of 7 scored categories. Expo Push Notifications leads on payments \u0026 pricing.",
        "question": "Which is better for AI agents, Courier or Expo Push Notifications?"
      },
      {
        "answer": "Courier needs an API key. Expo Push Notifications takes an API key or an OAuth sign-in.",
        "question": "Do Courier and Expo Push Notifications need an API key?"
      },
      {
        "answer": "Yes. Courier has a hosted endpoint at https://api.courier.com and Expo Push Notifications at https://exp.host/--/api/v2/push/send.",
        "question": "Can an agent call Courier and Expo Push Notifications without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 92 against 65",
          "Schema \u0026 documentation, 84 against 60",
          "Agent ergonomics, 68 against 63",
          "Security \u0026 auth, 56 against 48",
          "Maintenance \u0026 community, 86 against 74"
        ],
        "also": [
          "Agent-ready, a grade of BB or better"
        ],
        "goodFor": "A product team that wants simple per-send billing and one API across many providers, and for agents that only send.",
        "slug": "courier",
        "watchFor": "170 MCP tools with no toolsets, filtering or read-only mode"
      },
      {
        "aheadOn": [
          "Payments \u0026 pricing, 40 against 35"
        ],
        "also": null,
        "goodFor": "An agent that must push to an app already built with Expo, at no cost and with one call for both platforms.",
        "slug": "expo-push-notifications",
        "watchFor": "The send API needs no authentication by default, so anyone holding a push token can send to that device until the owner enables access tokens"
      }
    ],
    "job": {
      "capability": "notify.push",
      "name": "Push notifications"
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    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier.json",
        "title": "Amazon SNS vs Courier",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-expo-push-notifications.json",
        "title": "Amazon SNS vs Expo Push Notifications",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-expo-push-notifications"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-firebase-cloud-messaging.json",
        "title": "Courier vs Firebase Cloud Messaging",
        "url": "https://www.anchorterminal.com/compare/courier-vs-firebase-cloud-messaging"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-knock.json",
        "title": "Courier vs Knock",
        "url": "https://www.anchorterminal.com/compare/courier-vs-knock"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-magicbell.json",
        "title": "Courier vs MagicBell",
        "url": "https://www.anchorterminal.com/compare/courier-vs-magicbell"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-novu.json",
        "title": "Courier vs Novu",
        "url": "https://www.anchorterminal.com/compare/courier-vs-novu"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-ntfy.json",
        "title": "Courier vs ntfy",
        "url": "https://www.anchorterminal.com/compare/courier-vs-ntfy"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-onesignal.json",
        "title": "Courier vs OneSignal",
        "url": "https://www.anchorterminal.com/compare/courier-vs-onesignal"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-pingram.json",
        "title": "Courier vs Pingram",
        "url": "https://www.anchorterminal.com/compare/courier-vs-pingram"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-pushover.json",
        "title": "Courier vs Pushover",
        "url": "https://www.anchorterminal.com/compare/courier-vs-pushover"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-suprsend.json",
        "title": "Courier vs SuprSend",
        "url": "https://www.anchorterminal.com/compare/courier-vs-suprsend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-firebase-cloud-messaging.json",
        "title": "Expo Push Notifications vs Firebase Cloud Messaging",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-firebase-cloud-messaging"
      },
      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-knock.json",
        "title": "Expo Push Notifications vs Knock",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-knock"
      },
      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-magicbell.json",
        "title": "Expo Push Notifications vs MagicBell",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-magicbell"
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      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-novu.json",
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      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-onesignal.json",
        "title": "Expo Push Notifications vs OneSignal",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-onesignal"
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      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-pingram.json",
        "title": "Expo Push Notifications vs Pingram",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-pingram"
      },
      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-pushover.json",
        "title": "Expo Push Notifications vs Pushover",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-pushover"
      },
      {
        "json": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-suprsend.json",
        "title": "Expo Push Notifications vs SuprSend",
        "url": "https://www.anchorterminal.com/compare/expo-push-notifications-vs-suprsend"
      }
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    "scores": [
      {
        "by": 27,
        "courier": 92,
        "edge": "courier",
        "expo-push-notifications": 65,
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 24,
        "courier": 84,
        "edge": "courier",
        "expo-push-notifications": 60,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "by": 5,
        "courier": 68,
        "edge": "courier",
        "expo-push-notifications": 63,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "by": 8,
        "courier": 56,
        "edge": "courier",
        "expo-push-notifications": 48,
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "by": 5,
        "courier": 35,
        "edge": "expo-push-notifications",
        "expo-push-notifications": 40,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 12,
        "courier": 86,
        "edge": "courier",
        "expo-push-notifications": 74,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "by": 3,
        "courier": 65,
        "edge": "expo-push-notifications",
        "expo-push-notifications": 68,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Courier scores 70.5 (BB) on agent readiness against Expo Push Notifications's 58.8 (C), and leads in 5 of 7 scored categories. Expo Push Notifications leads on payments \u0026 pricing. Both do push notifications.",
    "verdicts": {
      "courier": "Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode.",
      "expo-push-notifications": "A free push relay with a small, well documented HTTP API, published limits of 600 notifications a second and written error codes. Sending needs no credential unless the owner turns on access tokens, there is no idempotency key or SLA, and the status page records three iOS push incidents since 4 August 2026."
    }
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    "html": "https://www.anchorterminal.com/compare/courier-vs-expo-push-notifications",
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  "markdown": "Courier scores 70.5 (BB) on agent readiness against Expo Push Notifications's 58.8 (C), and leads in 5 of 7 scored categories. Expo Push Notifications leads on payments \u0026 pricing. Both do push notifications.\n\n- Courier: grade BB, 70.5/100, rank #151 of 950. Markdown https://www.anchorterminal.com/tools/courier.md · JSON https://www.anchorterminal.com/api/v1/tools/courier.json\n- Expo Push Notifications: grade C, 58.8/100, rank #571 of 950. Markdown https://www.anchorterminal.com/tools/expo-push-notifications.md · JSON https://www.anchorterminal.com/api/v1/tools/expo-push-notifications.json\n- Best notification APIs for AI agents: https://www.anchorterminal.com/best/notifications/index.md\n- All 66 notifications comparisons: https://www.anchorterminal.com/compare/notifications/index.md\n\n## Which one, for what\n\n### Courier (BB)\n\nGood for: A product team that wants simple per-send billing and one API across many providers, and for agents that only send.\n\nAhead on:\n- Reliability, 92 against 65\n- Schema \u0026 documentation, 84 against 60\n- Agent ergonomics, 68 against 63\n- Security \u0026 auth, 56 against 48\n- Maintenance \u0026 community, 86 against 74\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: 170 MCP tools with no toolsets, filtering or read-only mode\n\n### Expo Push Notifications (C)\n\nGood for: An agent that must push to an app already built with Expo, at no cost and with one call for both platforms.\n\nAhead on:\n- Payments \u0026 pricing, 40 against 35\n\nWatch for: The send API needs no authentication by default, so anyone holding a push token can send to that device until the owner enables access tokens\n\n\n## Score by category\n\n| Category | Weight | Courier | Expo Push Notifications | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 92 | 65 | Courier +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 84 | 60 | Courier +24 |\n| Agent ergonomics | 13% (16.2 this run) | 68 | 63 | Courier +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 48 | Courier +8 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | Expo Push Notifications +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 86 | 74 | Courier +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 68 | Expo Push Notifications +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **70.5 · BB** | **58.8 · C** | |\n\n## Facts side by side\n\n| Fact | Courier | Expo Push Notifications |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Courier | Expo |\n| Hosted endpoint | `https://api.courier.com` | `https://exp.host/--/api/v2/push/send` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Free |\n| x402 | no | no |\n| Licence | Apache-2.0 (Node SDK) | Proprietary service under Expo's terms of service. The Node.js server SDK is MIT |\n| Tools exposed | 170 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.trycourier/courier` | not listed |\n| Last release | 2026-09-24 | 2026-08-24 |\n| Terms last updated | 2026-09-10 | 2025-05-29 |\n| Privacy policy last updated | 2025-12-08 | 2025-10-21 |\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 | yes |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 63 stars, 189k npm/wk, 35k PyPI/wk | 1k stars, 1.3M npm/wk |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\n\n**Courier.** Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode.\n\n**Expo Push Notifications.** A free push relay with a small, well documented HTTP API, published limits of 600 notifications a second and written error codes. Sending needs no credential unless the owner turns on access tokens, there is no idempotency key or SLA, and the status page records three iOS push incidents since 4 August 2026.\n\n## Before you call either\n\n### Courier\n\n1. Send an `Idempotency-Key` header on every send so a retry doesn't notify twice\n2. Set `routing.method` to `single` to stop at the first channel that works\n3. Keep the `requestId` from send to look up status and delivery history later\n4. Use a dedicated API key for the MCP server. Every one of the 170 tools runs with that key's full rights\n5. Space resends at least 2 seconds apart per message or you get a 429\n\n### Expo Push Notifications\n\n1. Send an array of up to 100 messages per request, all for one project, and stay under 600 notifications a second\n2. Keep each ticket `id` and POST them to `/--/api/v2/push/getReceipts` about 15 minutes later. Receipts are cleared after 24 hours\n3. Stop sending to a token when a ticket or receipt returns `DeviceNotRegistered`\n4. If the project has enhanced push security on, send `Authorization: Bearer \u003caccess token\u003e` or the call fails with `UNAUTHORIZED`\n5. Retry 429 and 5xx with exponential backoff, and expect an occasional duplicate because there is no idempotency key\n\n## Questions\n\n### Which is better for AI agents, Courier or Expo Push Notifications?\n\nCourier scores 70.5 (BB) on agent readiness against Expo Push Notifications's 58.8 (C), and leads in 5 of 7 scored categories. Expo Push Notifications leads on payments \u0026 pricing.\n\n### Do Courier and Expo Push Notifications need an API key?\n\nCourier needs an API key. Expo Push Notifications takes an API key or an OAuth sign-in.\n\n### Can an agent call Courier and Expo Push Notifications without installing anything?\n\nYes. Courier has a hosted endpoint at https://api.courier.com and Expo Push Notifications at https://exp.host/--/api/v2/push/send.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/courier-vs-expo-push-notifications.json, and with the fewest tokens: https://www.anchorterminal.com/compare/courier-vs-expo-push-notifications.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"courier\", \"b\": \"expo-push-notifications\"}`. From a terminal: `anchor compare courier expo-push-notifications`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/courier.json and https://www.anchorterminal.com/api/v1/tools/expo-push-notifications.json\n\n## Other comparisons with Courier or Expo Push Notifications\n\n- [Amazon SNS vs Courier](https://www.anchorterminal.com/compare/amazon-sns-vs-courier.md)\n- [Amazon SNS vs Expo Push Notifications](https://www.anchorterminal.com/compare/amazon-sns-vs-expo-push-notifications.md)\n- [Courier vs Firebase Cloud Messaging](https://www.anchorterminal.com/compare/courier-vs-firebase-cloud-messaging.md)\n- [Courier vs Knock](https://www.anchorterminal.com/compare/courier-vs-knock.md)\n- [Courier vs MagicBell](https://www.anchorterminal.com/compare/courier-vs-magicbell.md)\n- [Courier vs Novu](https://www.anchorterminal.com/compare/courier-vs-novu.md)\n- [Courier vs ntfy](https://www.anchorterminal.com/compare/courier-vs-ntfy.md)\n- [Courier vs OneSignal](https://www.anchorterminal.com/compare/courier-vs-onesignal.md)\n- [Courier vs Pingram](https://www.anchorterminal.com/compare/courier-vs-pingram.md)\n- [Courier vs Pushover](https://www.anchorterminal.com/compare/courier-vs-pushover.md)\n- [Courier vs SuprSend](https://www.anchorterminal.com/compare/courier-vs-suprsend.md)\n- [Expo Push Notifications vs Firebase Cloud Messaging](https://www.anchorterminal.com/compare/expo-push-notifications-vs-firebase-cloud-messaging.md)\n- [Expo Push Notifications vs Knock](https://www.anchorterminal.com/compare/expo-push-notifications-vs-knock.md)\n- [Expo Push Notifications vs MagicBell](https://www.anchorterminal.com/compare/expo-push-notifications-vs-magicbell.md)\n- [Expo Push Notifications vs Novu](https://www.anchorterminal.com/compare/expo-push-notifications-vs-novu.md)\n- [Expo Push Notifications vs ntfy](https://www.anchorterminal.com/compare/expo-push-notifications-vs-ntfy.md)\n- [Expo Push Notifications vs OneSignal](https://www.anchorterminal.com/compare/expo-push-notifications-vs-onesignal.md)\n- [Expo Push Notifications vs Pingram](https://www.anchorterminal.com/compare/expo-push-notifications-vs-pingram.md)\n- [Expo Push Notifications vs Pushover](https://www.anchorterminal.com/compare/expo-push-notifications-vs-pushover.md)\n- [Expo Push Notifications vs SuprSend](https://www.anchorterminal.com/compare/expo-push-notifications-vs-suprsend.md)\n",
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