{
  "data": {
    "a": {
      "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"
      }
    },
    "b": {
      "slug": "suprsend",
      "name": "SuprSend",
      "vendor": "SuprSend",
      "vendorUrl": "https://www.suprsend.com",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Notification workflow API for email, SMS, push, an in-app Inbox, Slack, Microsoft Teams and webhooks, with digests, batching and preferences per user and per tenant.",
      "url": "https://www.anchorterminal.com/tools/suprsend",
      "markdownUrl": "https://www.anchorterminal.com/tools/suprsend.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/suprsend.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/suprsend.json",
      "repo": "https://github.com/suprsend/cli",
      "license": "MIT (CLI and MCP server)",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://hub.suprsend.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@suprsend/node-sdk"
        },
        {
          "registry": "pypi",
          "name": "suprsend-py-sdk"
        },
        {
          "registry": "npm",
          "name": "suprsend"
        }
      ],
      "auth": "api-key",
      "authNotes": "API key as `Authorization: Bearer` on the trigger API. Workspace key and secret pairs can be issued and rotated per service through the management API since 2026-09-22. The MCP server reads a service token from `SUPRSEND_SERVICE_TOKEN`, and a service token grants full workspace access.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 10,000 notifications a month, no card, unlimited team members and 30-day log retention. Essentials $110 a month ($100 billed yearly, $1,200 a year) for 50,000, then $2 per 1,000, with 30-day logs. Business $275 a month ($250 billed yearly, $3,000 a year) for 50,000, then $5 per 1,000, with 90-day logs and an audit trail. Paid plans list 99.9% uptime. Enterprise is custom. A notification is one message to one user or object on one channel, a digest or batch counts once, and sends SuprSend drops for opt-outs aren't billed, though provider failures are (https://www.suprsend.com/pricing).",
      "priceSummary": "$110 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 12,
        "npmWeekly": 13318,
        "pypiWeekly": 1099,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.suprsend.com",
      "llmsTxt": "https://docs.suprsend.com/llms.txt",
      "openapi": "https://docs.suprsend.com/openapi.yaml",
      "registryName": "io.github.suprsend/cli",
      "capabilities": [
        "notify.push",
        "notify.in-app",
        "notify.multichannel",
        "notify.preferences",
        "notify.digest"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "enterprise"
      ],
      "lastRelease": "2026-09-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 72.9,
        "grade": "BB",
        "agentReady": true,
        "rank": 65,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 87,
          "maintenance": 81,
          "payments": 40,
          "reliability": 69,
          "schema": 94,
          "security": 66,
          "transparency": 69
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "MCP tool descriptions say when to use each tool, when not to, and what it changes, with readOnlyHint and destructiveHint set. No rate-limit page or 429 guidance.",
        "strengths": [
          "MCP tool descriptions say when to use each tool, when not to, and what it changes, with readOnlyHint and destructiveHint set",
          "`--tools` loads a subset of the 22 built-in tools, and trigger tools register only for the workflows you name",
          "Free plan with 10,000 notifications, no card and unlimited seats",
          "Digests and batches bill as one notification, and opt-out drops aren't billed",
          "99.9% uptime listed on every paid plan, SOC 2 Type II and ISO 27001"
        ],
        "weaknesses": [
          "No rate-limit page or 429 guidance",
          "No hosted MCP server, only the local CLI",
          "Workspace secrets come back in plain text on every management API response",
          "A 20-minute platform outage on 20 August 2026 and repeated short API blips",
          "Audit trail on Business and Enterprise only, RBAC on Enterprise only"
        ],
        "agentNotes": [
          "Pass an idempotency key on each trigger. It holds for 24 hours",
          "Start the MCP server with `--tools` set to read-only groups for production workspaces",
          "Register trigger tools with `--workflows=\u003cslug\u003e` for only the workflows you need. The default registers none",
          "Count each bulk record against the rate limit, and keep bulk calls to 100 records and 800 KB",
          "Treat management API responses as secrets. They include the workspace secret in plain text"
        ],
        "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": 72.9
          }
        ],
        "editorialScores": {
          "ergonomics": 87,
          "maintenance": 81,
          "payments": 40,
          "reliability": 69,
          "schema": 94,
          "security": 66,
          "transparency": 52
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl -X POST https://hub.suprsend.com/trigger/ \\\n  -H \"Authorization: Bearer $SUPRSEND_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"workflow\":\"build-finished\",\"recipients\":[{\"distinct_id\":\"user_123\",\"$email\":[\"user@example.com\"]}],\"data\":{\"status\":\"passed\"}}'",
        "claudeCode": "claude mcp add suprsend --scope user --env SUPRSEND_SERVICE_TOKEN=$SUPRSEND_SERVICE_TOKEN -- npx -y suprsend start-mcp-server",
        "config": {
          "mcpServers": {
            "suprsend": {
              "args": [
                "-y",
                "suprsend",
                "start-mcp-server"
              ],
              "command": "npx",
              "env": {
                "SUPRSEND_SERVICE_TOKEN": "${SUPRSEND_SERVICE_TOKEN}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/suprsend"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Essentials",
          "unit": "month",
          "usd": 110,
          "note": "50,000 notifications, $100 billed yearly"
        },
        {
          "item": "Essentials overage",
          "unit": "message",
          "usd": 0.002
        },
        {
          "item": "Business",
          "unit": "month",
          "usd": 275,
          "note": "50,000 notifications, $250 billed yearly"
        },
        {
          "item": "Business overage",
          "unit": "message",
          "usd": 0.005
        }
      ],
      "provenance": {
        "legalEntity": "SuprStack Inc",
        "domain": "suprsend.com",
        "domainRegistered": "2020-12-27",
        "endpointOnVendorDomain": true,
        "terms": "https://www.suprsend.com/terms",
        "privacy": "https://www.suprsend.com/privacy",
        "statusPage": "https://status.suprsend.com",
        "changelog": "https://docs.suprsend.com/changelog/overview",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms are governed by Delaware law and give only a support email, no postal address.",
          "The status page showed Third Party Dependencies as degraded (a Cloudflare Workers issue) when we checked."
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/suprsend.json",
      "live": {
        "slug": "suprsend",
        "probe": {
          "target": "https://hub.suprsend.com",
          "method": "get",
          "lastAt": "2026-10-04T23:32:55.045670768Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 69,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 79,
          "p95ms24h": 164,
          "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.suprsend.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:30.40729232Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "suprsend/cli",
            "version": "1.0.1",
            "released": "2026-07-10",
            "seenAt": "2026-10-04T16:41:11.848846833Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.suprsend/cli",
            "version": "1.0.1",
            "seenAt": "2026-10-03T23:29:28.630222764Z"
          },
          {
            "registry": "npm",
            "name": "@suprsend/node-sdk",
            "version": "1.15.1",
            "seenAt": "2026-10-04T16:41:09.61896764Z"
          },
          {
            "registry": "npm",
            "name": "suprsend",
            "version": "1.0.1",
            "seenAt": "2026-10-04T16:41:10.296582788Z"
          },
          {
            "registry": "pypi",
            "name": "suprsend-py-sdk",
            "version": "0.20.0",
            "released": "2026-09-04",
            "seenAt": "2026-10-04T16:41:10.111791733Z"
          }
        ],
        "githubStars": 12,
        "npmWeekly": 11125,
        "pypiWeekly": 1074,
        "securityTxt": {
          "url": "https://suprsend.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:47.168187763Z"
        },
        "llmsTxt": {
          "url": "https://docs.suprsend.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:16.733762415Z"
        },
        "domain": {
          "domain": "suprsend.com",
          "registered": "2020-12-27",
          "source": "https://rdap.verisign.com/com/v1/domain/suprsend.com",
          "checkedAt": "2026-10-04T13:10:03.719103966Z"
        },
        "pages": [
          {
            "url": "https://docs.suprsend.com/changelog/overview",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:04.269843354Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a51b9d1cfccd"
          },
          {
            "url": "https://www.suprsend.com/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:20.807951625Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "9b909a363f19"
          },
          {
            "url": "https://www.suprsend.com/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:22.910384524Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "73c6e3ac26d2"
          },
          {
            "url": "https://www.suprsend.com/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:24.877528099Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "97053f0651bd"
          }
        ],
        "updatedAt": "2026-10-04T23:32:55.045670768Z"
      }
    },
    "summary": "SuprSend has a score of 72.9 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 41 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/ntfy-vs-suprsend",
    "json": "https://www.anchorterminal.com/compare/ntfy-vs-suprsend.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/ntfy-vs-suprsend.md",
    "slim": "https://www.anchorterminal.com/compare/ntfy-vs-suprsend.min.md"
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  "markdown": "SuprSend has a score of 72.9 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 41 points.\n\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- SuprSend: grade BB, 72.9/100, rank #65 of 452. Markdown https://www.anchorterminal.com/tools/suprsend.md · JSON https://www.anchorterminal.com/api/v1/tools/suprsend.json\n\n## Which one, for what\n\nPick ntfy for reliability (+14), payments \u0026 pricing (+10), transparency \u0026 trust (+10).\n\nPick SuprSend for schema \u0026 documentation (+41), agent ergonomics (+21), security \u0026 auth (+28), maintenance \u0026 community (+14).\n\n## Score by category\n\n| Category | Weight | ntfy | SuprSend | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 83 | 69 | ntfy +14 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 53 | 94 | SuprSend +41 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 87 | SuprSend +21 |\n| Security \u0026 auth | 14% (17.5 this run) | 38 | 66 | SuprSend +28 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 50 | 40 | ntfy +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 67 | 81 | SuprSend +14 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 69 | ntfy +10 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **61.6 · C** | **72.9 · BB** | |\n\n## Facts side by side\n\n| Fact | ntfy | SuprSend |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | ntfy | SuprSend |\n| Hosted endpoint | `https://ntfy.sh` | `https://hub.suprsend.com` |\n| Transports | HTTP | HTTP, stdio |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 and GPL-2.0 (dual) | MIT (CLI and MCP server) |\n| Tools exposed | none | 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 | yes |\n| llms.txt | no | yes |\n| MCP registry | not listed | `io.github.suprsend/cli` |\n| Last release | 2026-08-27 | 2026-09-28 |\n| Popularity | 34k stars | 12 stars, 13k npm/wk, 1.1k PyPI/wk |\n| Agent reviews | 4/5 (2) | 3/5 (2) |\n\n## Verdicts\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**SuprSend.** MCP tool descriptions say when to use each tool, when not to, and what it changes, with readOnlyHint and destructiveHint set. No rate-limit page or 429 guidance.\n\n## Before you call either\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### SuprSend\n\n1. Pass an idempotency key on each trigger. It holds for 24 hours\n2. Start the MCP server with `--tools` set to read-only groups for production workspaces\n3. Register trigger tools with `--workflows=\u003cslug\u003e` for only the workflows you need. The default registers none\n4. Count each bulk record against the rate limit, and keep bulk calls to 100 records and 800 KB\n5. Treat management API responses as secrets. They include the workspace secret in plain text\n\n## Other comparisons with ntfy or SuprSend\n\n- [Courier vs ntfy](https://www.anchorterminal.com/compare/courier-vs-ntfy.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- [Knock vs SuprSend](https://www.anchorterminal.com/compare/knock-vs-suprsend.md)\n- [Novu vs ntfy](https://www.anchorterminal.com/compare/novu-vs-ntfy.md)\n- [Novu vs SuprSend](https://www.anchorterminal.com/compare/novu-vs-suprsend.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- [OneSignal vs SuprSend](https://www.anchorterminal.com/compare/onesignal-vs-suprsend.md)\n- [Pushover vs SuprSend](https://www.anchorterminal.com/compare/pushover-vs-suprsend.md)\n",
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    "description": "SuprSend has a score of 72.9 (BB) against ntfy's 61.6 (C). Both do notify push. The largest gap is schema \u0026 documentation, 41 points. Category scores, facts, verdicts and agent notes side by side.",
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    "section": "tools",
    "title": "ntfy vs SuprSend for AI agents, C 61.6 vs BB 72.9 | Anchor Terminal",
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