Usno Astronomy
https://gateway.pipeworx.io/usno-astronomy/mcp ↗
Description
Next solar eclipse, eclipse times by location, Moon phases and seasons from the US Naval…
What our measurements say
Usno Astronomy is a remote MCP server published at gateway.pipeworx.io. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 44 ms, placing it among the faster endpoints. Its tool list could not be read; the server is closed to direct calls. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- USNO-specific tools (eclipses, moon phases, seasons) have precise, domain-appropriate naming
- Required parameters for USNO tools are clearly defined with geographic/time data
- Some tools explicitly state preference hierarchy (e.g., 'prefer over web search')
Weaknesses
- Multiple 'ask_pipeworx' variants (beta, grounded) create tool name ambiguity
- Generic tools have overly broad parameter lists with redundant names (query/q/prompt)
- Descriptions for non-USNO tools often lack concrete use cases
- No clear error handling documentation for parameter validation
ask_pipeworx— Redundant parameter names (query/q/prompt) create ambiguityask_pipeworx_beta— Functionally identical to ask_pipeworx with unclear differentiationask_pipeworx_grounded— No clear use case differentiation from base versionusno_solar_eclipses— Missing explicit error handling for invalid year parametersusno_eclipse_circumstances— No documentation for invalid geographic coordinates
Verdict
Event narrative
Sign up free to generateSchema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- Tool list unreadable — the server responds, but its tools/list call does not return a valid result. Schema checks and AI evaluation cannot run.
- inputSchema invalid: —
- Smoke test not run this round
- Cold-start not measurable (no handshake)
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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[](https://mcpmetrics.io/servers/io-github-pipeworx-io-usno-astronomy)<a href="https://mcpmetrics.io/servers/io-github-pipeworx-io-usno-astronomy"><img src="https://mcpmetrics.io/badge/io.github.pipeworx-io/usno-astronomy/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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