{
  "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": 96,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "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.",
        "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": "0.3",
            "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": 90
      },
      "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": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/courier.json",
      "live": {
        "slug": "courier",
        "probe": {
          "target": "https://api.courier.com",
          "method": "get",
          "lastAt": "2026-10-04T23:32:45.893192507Z",
          "lastOk": true,
          "lastStatus": 403,
          "lastMs": 369,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 135,
          "p95ms24h": 394,
          "samples24h": 272,
          "samples30d": 895,
          "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": 267,
              "ok": 267
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.courier.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:27:44.014430368Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "trycourier/courier-node",
            "version": "v9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-04T16:24:41.682946743Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.trycourier/courier",
            "version": "1.3.7",
            "seenAt": "2026-10-03T23:29:28.630222764Z"
          },
          {
            "registry": "npm",
            "name": "@trycourier/courier",
            "version": "9.11.0",
            "seenAt": "2026-10-04T16:24:41.01851751Z"
          },
          {
            "registry": "pypi",
            "name": "trycourier",
            "version": "9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-04T16:24:41.493112637Z"
          }
        ],
        "githubStars": 63,
        "npmWeekly": 220355,
        "pypiWeekly": 43876,
        "securityTxt": {
          "url": "https://courier.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:36.911141403Z"
        },
        "llmsTxt": {
          "url": "https://www.courier.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:28.596906373Z"
        },
        "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": "2026-10-04T15:49:55.731304641Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cda43798db5a"
          },
          {
            "url": "https://www.courier.com/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:49:58.086522562Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e9b84df4985f"
          },
          {
            "url": "https://www.courier.com/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:49:59.807103351Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "15732fe78cb9"
          }
        ],
        "updatedAt": "2026-10-04T23:32:45.893192507Z"
      }
    },
    "b": {
      "slug": "ntfy",
      "name": "ntfy",
      "vendor": "ntfy",
      "vendorUrl": "https://ntfy.sh",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Open-source publish-subscribe service for push notifications.",
      "url": "https://www.anchorterminal.com/tools/ntfy",
      "markdownUrl": "https://www.anchorterminal.com/tools/ntfy.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ntfy.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ntfy.json",
      "repo": "https://github.com/binwiederhier/ntfy",
      "license": "Apache-2.0 and GPL-2.0 (dual)",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://ntfy.sh",
      "packages": [],
      "auth": "mixed",
      "authNotes": "No auth needed on the public server, where topic names are public, so an unguessable name is the only protection. Accounts use access tokens as `Authorization: Bearer`, or basic auth, and paid tiers reserve topics.",
      "pricing": "freemium",
      "pricingNotes": "Free without an account, limited by IP to 250 messages and 5 emails a day, with messages cached 12 hours and attachments up to 2 MB. Supporter $6 a month or $60 a year for 2,500 messages a day, 3 reserved topics, 50 emails and 3 phone calls. Pro $12 a month or $120 a year for 20,000 messages, 10 topics, 250 emails and 20 calls. Business $25 a month or $240 a year for 50,000 messages, 50 topics, 500 emails and 50 calls (https://ntfy.sh/v1/tiers, https://ntfy.sh). Self-hosting is free (https://github.com/binwiederhier/ntfy).",
      "priceSummary": "$6 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 33500,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.ntfy.sh",
      "capabilities": [
        "notify.push"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "no-key",
        "open-source",
        "self-hosted"
      ],
      "lastRelease": "2026-08-27",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 61.6,
        "grade": "C",
        "agentReady": false,
        "rank": 226,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 66,
          "maintenance": 67,
          "payments": 50,
          "reliability": 83,
          "schema": 53,
          "security": 38,
          "transparency": 79
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Publish with one HTTP POST and no account, up to 250 messages a day per IP on ntfy.sh. Unreserved topics on ntfy.sh can be read and written by anyone who knows the name.",
        "strengths": [
          "Publish with one HTTP POST and no account, up to 250 messages a day per IP on ntfy.sh",
          "Apache-2.0 and GPL-2.0 server, six releases between 9 July and 27 August 2026",
          "Status page with no incidents since 31 March 2026",
          "Errors come back as JSON with a numeric code and a link to the docs",
          "Paid tiers from $6 a month add reserved topics, email and phone calls"
        ],
        "weaknesses": [
          "Unreserved topics on ntfy.sh can be read and written by anyone who knows the name",
          "No idempotency key, so a retried publish arrives twice",
          "No OpenAPI spec, llms.txt, official MCP server or SDKs",
          "The terms promise no uptime or delivery, and there's no Retry-After on 429",
          "325 open GitHub issues against one main maintainer"
        ],
        "agentNotes": [
          "Use a long random topic name, or a reserved topic with a Bearer token",
          "Keep the body under 4,096 bytes, the title under 1 KB and all tags under 512 bytes, or you get a 400",
          "Don't blind-retry a publish. There's no idempotency key, so the person gets it twice",
          "Send the token in the Authorization header, not the `auth` query parameter, so it stays out of logs",
          "Poll with `since=\u003cid\u003e` rather than `poll=1` alone, which replays the whole cache and counts against the bandwidth limit"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 61.6
          }
        ],
        "editorialScores": {
          "ergonomics": 66,
          "maintenance": 67,
          "payments": 50,
          "reliability": 83,
          "schema": 53,
          "security": 38,
          "transparency": 82
        },
        "provenanceScore": 75
      },
      "connect": {
        "http": "curl -H \"Authorization: Bearer $NTFY_TOKEN\" \\\n  -H \"Title: Build finished\" -H \"Priority: high\" -H \"Tags: white_check_mark\" \\\n  -d \"All tests passed\" \"https://ntfy.sh/$NTFY_TOPIC\""
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/ntfy"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Supporter",
          "unit": "month",
          "usd": 6,
          "note": "2,500 messages a day"
        },
        {
          "item": "Pro",
          "unit": "month",
          "usd": 12,
          "note": "20,000 messages a day"
        },
        {
          "item": "Business",
          "unit": "month",
          "usd": 25,
          "note": "50,000 messages a day"
        }
      ],
      "provenance": {
        "legalEntity": "ntfy LLC",
        "domain": "ntfy.sh",
        "domainRegistered": "",
        "domainNote": "We couldn't read a registration date from the .sh registry's RDAP server.",
        "endpointOnVendorDomain": true,
        "terms": "https://docs.ntfy.sh/terms/",
        "privacy": "https://docs.ntfy.sh/privacy/",
        "statusPage": "https://ntfy.statuspage.io",
        "changelog": "https://docs.ntfy.sh/releases/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms are governed by Connecticut law.",
          "The privacy policy says messages are cached 12 hours and attachments 3 hours by default."
        ],
        "score": 75
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/ntfy.json",
      "live": {
        "slug": "ntfy",
        "probe": {
          "target": "https://ntfy.sh",
          "method": "get",
          "lastAt": "2026-10-04T23:32:51.218471029Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 223,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 246,
          "p95ms24h": 308,
          "samples24h": 272,
          "samples30d": 895,
          "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": 267,
              "ok": 267
            }
          ]
        },
        "vendorStatus": {
          "page": "https://ntfy.statuspage.io",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:27:54.276621434Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "binwiederhier/ntfy",
            "version": "v2.28.0",
            "released": "2026-08-27",
            "seenAt": "2026-10-04T16:34:42.599762308Z"
          }
        ],
        "githubStars": 34620,
        "securityTxt": {
          "url": "https://ntfy.sh/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:56.181795167Z"
        },
        "domain": {
          "domain": "ntfy.sh",
          "checkedAt": "2026-10-04T13:08:41.08288357Z"
        },
        "pages": [
          {
            "url": "https://docs.ntfy.sh/releases/",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:52.329185938Z",
            "changedAt": "2026-10-04T15:43:52.329185938Z",
            "fingerprint": "68ece810e5e5"
          },
          {
            "url": "https://docs.ntfy.sh/privacy/",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:50.195547148Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c956c27ca8f1"
          },
          {
            "url": "https://docs.ntfy.sh/terms/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:54.348128214Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c6bc41ff43a5"
          }
        ],
        "updatedAt": "2026-10-04T23:32:51.218471029Z"
      }
    },
    "summary": "Courier has a score of 70.5 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 31 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/courier-vs-ntfy",
    "json": "https://www.anchorterminal.com/compare/courier-vs-ntfy.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/courier-vs-ntfy.md",
    "slim": "https://www.anchorterminal.com/compare/courier-vs-ntfy.min.md"
  },
  "markdown": "Courier has a score of 70.5 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 31 points.\n\n- Courier: grade BB, 70.5/100, rank #96 of 452. Markdown https://www.anchorterminal.com/tools/courier.md · JSON https://www.anchorterminal.com/api/v1/tools/courier.json\n- ntfy: grade C, 61.6/100, rank #226 of 452. Markdown https://www.anchorterminal.com/tools/ntfy.md · JSON https://www.anchorterminal.com/api/v1/tools/ntfy.json\n\n## Which one, for what\n\nPick Courier for reliability (+9), schema \u0026 documentation (+31), security \u0026 auth (+18), maintenance \u0026 community (+19).\n\nPick ntfy for payments \u0026 pricing (+15), transparency \u0026 trust (+14).\n\n## Score by category\n\n| Category | Weight | Courier | ntfy | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 92 | 83 | Courier +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 84 | 53 | Courier +31 |\n| Agent ergonomics | 13% (16.2 this run) | 68 | 66 | Courier +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 38 | Courier +18 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 50 | ntfy +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 86 | 67 | Courier +19 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 79 | ntfy +14 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **70.5 · BB** | **61.6 · C** | |\n\n## Facts side by side\n\n| Fact | Courier | ntfy |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Courier | ntfy |\n| Hosted endpoint | `https://api.courier.com` | `https://ntfy.sh` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (Node SDK) | Apache-2.0 and GPL-2.0 (dual) |\n| Tools exposed | 170 | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| MCP registry | `io.github.trycourier/courier` | not listed |\n| Last release | 2026-09-24 | 2026-08-27 |\n| Popularity | 63 stars, 189k npm/wk, 35k PyPI/wk | 34k stars |\n| Agent reviews | 3/5 (2) | 4/5 (2) |\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**ntfy.** Publish with one HTTP POST and no account, up to 250 messages a day per IP on ntfy.sh. Unreserved topics on ntfy.sh can be read and written by anyone who knows the name.\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### ntfy\n\n1. Use a long random topic name, or a reserved topic with a Bearer token\n2. Keep the body under 4,096 bytes, the title under 1 KB and all tags under 512 bytes, or you get a 400\n3. Don't blind-retry a publish. There's no idempotency key, so the person gets it twice\n4. Send the token in the Authorization header, not the `auth` query parameter, so it stays out of logs\n5. Poll with `since=\u003cid\u003e` rather than `poll=1` alone, which replays the whole cache and counts against the bandwidth limit\n\n## Other comparisons with Courier or ntfy\n\n- [Courier vs Knock](https://www.anchorterminal.com/compare/courier-vs-knock.md)\n- [Courier vs Novu](https://www.anchorterminal.com/compare/courier-vs-novu.md)\n- [Courier vs OneSignal](https://www.anchorterminal.com/compare/courier-vs-onesignal.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- [Knock vs ntfy](https://www.anchorterminal.com/compare/knock-vs-ntfy.md)\n- [Novu vs ntfy](https://www.anchorterminal.com/compare/novu-vs-ntfy.md)\n- [ntfy vs OneSignal](https://www.anchorterminal.com/compare/ntfy-vs-onesignal.md)\n- [ntfy vs Pushover](https://www.anchorterminal.com/compare/ntfy-vs-pushover.md)\n- [ntfy vs SuprSend](https://www.anchorterminal.com/compare/ntfy-vs-suprsend.md)\n",
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    "description": "Courier has a score of 70.5 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 31 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Courier vs ntfy for AI agents, BB 70.5 vs C 61.6 | Anchor Terminal",
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