mcp.r3js.org
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://mcp.r3js.org/mcp | streamable-http | org.r3js/r3 | ok | 200 | 2025-06-18 | 65 | 9/9 | 1242 | ok | 9 h ago |
MCP Check Receipts (Newest First, Up To 10 Per Server)
| Receipt | UTC Time | Path | State | HTTP | ms | Tools | Tools sha256 | Signed |
|---|---|---|---|---|---|---|---|---|
| 92b3e145705e119741c7 | 2026-10-30T21:24:49Z | /mcp | ok | 200 | 1134 | 65 | 687cf5bcc29b | per-receipt |
| c1e7101ce599e7317bfa | 2026-10-29T21:24:52Z | /mcp | ok | 200 | 2440 | 64 | 2d154dddbbfe | per-receipt |
| ef719df2e17ec3289d18 | 2026-10-28T21:24:46Z | /mcp | ok | 200 | 217 | 61 | 2cd0e6eef7c2 | per-receipt |
| b56c4c41bffa421b6c5c | 2026-10-27T21:24:43Z | /mcp | ok | 200 | 1301 | 61 | 2cd0e6eef7c2 | per-receipt |
| 8ab477faa044c602872a | 2026-10-26T21:24:51Z | /mcp | ok | 200 | 2405 | 61 | 404cb727e125 | per-receipt |
| 778bfe1ab095ae6e8176 | 2026-10-25T23:42:43Z | /mcp | ok | 200 | 1072 | 61 | e828270ab434 | per-receipt |
| e543886795eac9c70f59 | 2026-10-25T21:24:41Z | /mcp | ok | 200 | 1148 | 61 | e828270ab434 | per-receipt |
| 9c25451870dfa328b72b | 2026-10-24T16:48:51Z | /mcp | ok | 200 | 1711 | 61 | 86a790c6b9d1 | per-receipt |
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