> NOTICE — Pre-launch build. Every record here is a dated observation of a real MCP endpoint operated by a third party, rendered from the published archive. Coverage is partial — the figures cover the snapshots in the export this build was made from, not the whole chain and not the whole ecosystem. Claims and badges are not open.

# api.lettera.dev/mcp

Last observed: 2026-10-02T09:08:44.646Z
Recorded as: OK
Transport: streamable-http
Observations held: 38
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-26T09:13:35.818Z | REL-SNAP-022 | OK | - | 852 | 7 | d86a78d1ee026d757530e2a1d91b4536d1b2b172a9af8ff75624f608ec611972 |
| 2026-08-27T09:27:15.951Z | REL-SNAP-023 | OK | - | 426 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-08-28T09:24:05.668Z | REL-SNAP-024 | OK | - | 529 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-08-29T09:13:56.683Z | REL-SNAP-025 | OK | - | 467 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-08-30T09:16:02.390Z | REL-SNAP-026 | OK | - | 485 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-08-31T09:18:57.537Z | REL-SNAP-027 | OK | - | 880 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-01T09:13:33.833Z | REL-SNAP-028 | OK | - | 473 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-02T09:20:00.744Z | REL-SNAP-029 | OK | - | 809 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-03T09:41:26.884Z | REL-SNAP-030 | OK | - | 685 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-04T09:32:23.460Z | REL-SNAP-031 | OK | - | 471 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-05T09:17:24.427Z | REL-SNAP-032 | OK | - | 659 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-06T09:26:06.032Z | REL-SNAP-033 | OK | - | 633 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-07T09:48:59.381Z | REL-SNAP-034 | OK | - | 464 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-08T09:40:33.350Z | REL-SNAP-035 | OK | - | 437 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-09T09:25:21.788Z | REL-SNAP-036 | OK | - | 445 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-10T09:18:55.387Z | REL-SNAP-037 | OK | - | 409 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-11T09:18:19.916Z | REL-SNAP-038 | OK | - | 463 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-12T09:10:34.750Z | REL-SNAP-039 | OK | - | 470 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-13T09:37:56.525Z | REL-SNAP-040 | OK | - | 429 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-14T09:37:47.808Z | REL-SNAP-041 | OK | - | 466 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-15T09:31:07.583Z | REL-SNAP-042 | OK | - | 413 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-16T09:56:12.352Z | REL-SNAP-043 | OK | - | 398 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-17T09:40:19.696Z | REL-SNAP-044 | OK | - | 450 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-18T09:30:01.538Z | REL-SNAP-045 | OK | - | 629 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-19T09:15:58.641Z | REL-SNAP-046 | OK | - | 450 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-20T09:31:27.904Z | REL-SNAP-047 | OK | - | 446 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-21T09:12:34.315Z | REL-SNAP-048 | OK | - | 501 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-22T09:27:46.763Z | REL-SNAP-049 | OK | - | 463 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-23T09:48:44.866Z | REL-SNAP-050 | OK | - | 392 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-24T09:44:25.243Z | REL-SNAP-051 | OK | - | 459 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-25T09:41:57.054Z | REL-SNAP-052 | OK | - | 503 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-26T09:18:10.659Z | REL-SNAP-053 | OK | - | 380 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-27T09:30:55.327Z | REL-SNAP-054 | OK | - | 398 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-28T09:44:53.981Z | REL-SNAP-055 | OK | - | 552 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-29T09:32:42.437Z | REL-SNAP-056 | OK | - | 476 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-09-30T09:36:51.645Z | REL-SNAP-057 | OK | - | 431 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-10-01T09:12:48.165Z | REL-SNAP-058 | OK | - | 504 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |
| 2026-10-02T09:08:44.646Z | REL-SNAP-059 | OK | - | 471 | 7 | 505828439d3d6d0934f280dc40695b4b414878ed4ae18a3112f231e0f520c67a |

## Identity

Record key: api.lettera.dev/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): dev.lettera/relay (what the registry said when we swept it, as observed by us — not evidence that the registry was correct, that the name belongs to whoever registered it, or that it still resolves)
Name reported by the server: lettera (self-reported, unverified, never used as identity)

Each observation carries a merkle leaf in the snapshot it belongs to. The chain
establishes that a root existed by a given time; it does not establish that any
measurement is true.