api.dueback.co
Raw data · 1 server URL from the Official MCP Registry · simple view
Login-free handshake (initialize → tools/list; unpaid tools/call only on priced tools, to read the payment request; never paid, no credentials): automatic unauthenticated MCP handshake (initialize + tools/list), aiming for about once a day per listed server while we are still working through the registry; priority tier (host looked up via BotsRated preflight/check/report, or also a covered x402 seller, in the last 7 days) about every 6 hours; servers with no MCP answer for 7 days about every 4 days. States are factual: ok (initialize and tools/list answered), auth_required (HTTP 401/403: the server wants a login), handshake_failed (HTTP answer without a valid MCP result), unreachable (no HTTP answer), blocked (not contacted: the URL, a redirect or its DNS points to a private, local or otherwise non-public address, or to another host, which our rules don't allow). Names and descriptions are the registry's text; we don't check it.
| URL | Transport | Registry Name | Last State | HTTP | Protocol | Tools | Recent Checks OK | Median ms | TLS | Last Checked |
|---|---|---|---|---|---|---|---|---|---|---|
https://api.dueback.co/mcp | streamable-http | io.github.dunrossmai-rgb/dueback-mcp | ok | 200 | 2025-06-18 | 5 | 11/11 | 729 | ok | 7 h ago |
MCP Check Receipts (Newest First, Up To 10 Per Server)
| Receipt | UTC Time | Path | State | HTTP | ms | Tools | Tools sha256 | Signed |
|---|---|---|---|---|---|---|---|---|
| ce2c78dac89cbf7c0ba8 | 2026-11-03T15:09:40Z | /mcp | ok | 200 | 625 | 5 | 090b9bb7a17e | per-receipt |
| b24d16f83b35d06d9634 | 2026-11-02T15:09:41Z | /mcp | ok | 200 | 243 | 5 | 090b9bb7a17e | per-receipt |
| eabdd094084922d9ba8a | 2026-11-01T15:09:41Z | /mcp | ok | 200 | 1316 | 5 | 090b9bb7a17e | per-receipt |
| 73597f0c432bd37bc06d | 2026-10-31T15:09:38Z | /mcp | ok | 200 | 735 | 5 | 090b9bb7a17e | per-receipt |
| e3f5ca673ad8cafaaad5 | 2026-10-30T15:09:40Z | /mcp | ok | 200 | 729 | 5 | 090b9bb7a17e | per-receipt |
| c8a84716684e251a1544 | 2026-10-29T15:09:41Z | /mcp | ok | 200 | 149 | 5 | 090b9bb7a17e | per-receipt |
| b99ccca858dcde7b156a | 2026-10-28T15:09:41Z | /mcp | ok | 200 | 69 | 5 | 3222504dc384 | per-receipt |
| 1d714d7f47adb5fd3c0b | 2026-10-27T15:09:40Z | /mcp | ok | 200 | 1375 | 5 | 70d4699b73e2 | per-receipt |
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