Geomelon
https://mcp.geomelon.dev/mcp ↗
Description
Free, keyless demo of the Geomelon geographic API — city autocomplete with multilingual names across 50 languages, no signup or API key required. This hosted instance exposes one tool: `search_cities_autocomplete` (country-scoped, language-specific city name prefix search). For the full 22-tool set (countries, regions, languages, compound lookups) install the npm package with your own free [RapidAPI key](https://rapidapi.com/hom3chuk/api/geomelon): `npx -y geomelon-mcp`.
What our measurements say
Geomelon is a remote MCP server published at mcp.geomelon.dev. It has been probed 7 times since 9/10/2026. It answered in 7 of them (100.0%), a near-uninterrupted record. Median response time is 280 ms, placing it among the faster endpoints. It offers a narrow, focused set of 1 tools. 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
- Tool name clearly indicates autocomplete functionality for city searches
- Description explains key capabilities (country-scoped, language-specific search) and constraints
Weaknesses
- No input schema provided to clarify parameter naming, types, or required/optional fields
- No documentation of error handling or edge case scenarios
- Limited context about when to prefer this tool over other potential geographic APIs
search_cities_autocomplete— Missing input schema details for parameters like country code, language, or search term
Verdict
Event narrative
Risk: medium
- 2026-09-10T21:16:35.016Z — era changed from 'auth-gated' to 'legacy', compliance score from null to 100 · transition to legacy era with compliance score established
- 2026-09-11T03:50:39.090Z — era remained 'legacy', compliance score stabilized at 100 · stability in legacy era with full compliance
Advice
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 not run this round
- Cold-start: cold 80ms → warm 51ms (penalty 29ms)
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Server build: — → 1.1.1
- Supported versions: — → 2025-11-25
- Era changed: Auth-gated → Legacy
- Added to watch — era: Auth-gated
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