io.github.cyanheads/faa-aircraft-registry-mcp-server
faa-aircraft-registry-mcp-server
Offline, keyless lookup of the US civil aircraft registry — decode N-numbers, search records.
alive probed 2026-10-09 · HTTP 200
5tools
2.1ktokens in Claude Opus 5.5
2.2ktokens in Claude Code
1.1 %of a 200k context window
1.3ko200k_base estimate
319 msto initialize
63 msto list tools
- Endpoint
- https://faa-aircraft-registry.caseyjhand.com/mcp (streamable-http)
- Host
- faa-aircraft-registry.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- faa-aircraft-registry-mcp-server 0.1.10
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 771 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/faa-aircraft-registry-mcp-server
- Registry
- active, updated 2026-10-08 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| faa_search_registrations | 378 | 30 % |
| faa_search_aircraft_types | 300 | 24 % |
| faa_lookup_registration | 232 | 18 % |
| faa_get_registration_status | 199 | 16 % |
| faa_get_aircraft_type | 166 | 13 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:18 | alive | 578 ms | 5 | 2.1k | 1.3k |
| 2026-10-05 14:38 | alive | 319 ms | 5 | 2.1k | 1.3k |
| 2026-10-05 00:33 | alive | 189 ms | 5 | 1.3k | |
| 2026-10-04 10:04 | alive | 381 ms | 5 | 1.3k | |
| 2026-10-04 07:57 | alive | 462 ms | 5 | 1.3k | |
| 2026-10-03 20:37 | alive | 992 ms | 5 | 1.3k | |
| 2026-10-03 17:53 | alive | 599 ms | 5 | 1.3k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/faa-aircraft-registry-mcp-server)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.