io.github.cyanheads/aviation-weather-mcp-server
https://aviation-weather.caseyjhand.com/mcp ↗
io.github.cyanheads/aviation-weather-mcp-server is a remote MCP server published at aviation-weather.caseyjhand.com. It has been probed 56 times since 9/3/2026. It answered in 55 of them (98.2%), with periods of unreachability in between. Median response time is 510 ms, a delay an agent will notice. It offers a narrow, focused set of 5 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Fetch METARs, TAFs, PIREPs, and domestic SIGMETs from the NWS Aviation Weather Center.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-08 10:53:09 | Dual-era | 200 | 396 | 200 | 382 | 2026-07-28 |
| 2026-09-08 08:19:35 | Dual-era | 200 | 548 | 200 | 579 | 2026-07-28 |
| 2026-09-08 05:48:04 | Dual-era | 200 | 230 | 200 | 360 | 2026-07-28 |
| 2026-09-08 03:19:36 | Dual-era | 200 | 374 | 200 | 204 | 2026-07-28 |
| 2026-09-08 00:45:28 | Dual-era | 200 | 402 | 200 | 388 | 2026-07-28 |
| 2026-09-07 22:14:44 | Dual-era | 200 | 567 | 200 | 623 | 2026-07-28 |
| 2026-09-07 22:12:01 | Dual-era | 200 | 635 | 200 | 599 | 2026-07-28 |
| 2026-09-07 22:01:46 | Dual-era | 200 | 476 | 200 | 469 | 2026-07-28 |
| 2026-09-07 22:00:47 | Dual-era | 200 | 486 | 200 | 482 | 2026-07-28 |
| 2026-09-07 21:05:11 | Dual-era | 200 | 638 | 200 | 643 | 2026-07-28 |
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test failed · last run: 2026-09-08 00:45:28
- Cold-start: cold 142ms → warm 138ms (penalty 4ms)
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Server build: — → 0.4.1
- Back up
- Became unreachable
- Incomplete probe — one leg did not answer, era result not counted
- Added to watch — era: Dual-era
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