https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/color-rgb-ok/mcp ↗
RGB tuple shape
RGB tuple shape is a remote MCP server published at agent-observatory-sensor.nolimit-observatory.workers.dev. It has been probed 10 times since 9/12/2026. It answered in 10 of them (100.0%), a near-uninterrupted record. Median response time is 37 ms, placing it among the faster endpoints. It exposes a broad tool surface of 30 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
color-rgb-ok — Name and description provide no actionable context for usagetimezone — Parameters are non-specific and all marked as optionalnormalize-url — Shares identical parameter schema with 29 other toolsagent-tool-index — Name is overly generic and lacks clear purposeweb-fetch — Description doesn't specify when to use it vs similar toolstools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
color-rgb-okRGB tuple shape
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringutc-timeCurrent UTC timestamp.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringtimezoneCurrent time in a named IANA timezone.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringvalidate-jsonCheck whether a body is valid JSON. The body is discarded.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringnormalize-urlReturn origin, host, and path for a URL. Query and fragment are dropped.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringinspect-robotsFetch a public robots.txt and return group counts only.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringdomain-shapeSplit a hostname into labels without WHOIS or ownership data.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringcitationReturn host, scheme, and HTTP status for a URL. Page content is not stored.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringcompatibilityShow how this request is classified. No identifiers are retained.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringstatus-catalogShort catalog of common HTTP status codes.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringiana-zonesCommon IANA timezone names for clock calls.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringweb-fetchHTTP status and content type for a public URL. Body discarded.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstringDerived by comparing consecutive probes — changes in era, protocol version, build and reachability.
Add this badge to your README — it updates automatically as measurements change.
[](https://mcpmetrics.io/servers/io-github-sadri-dridi-color-rgb-ok)<a href="https://mcpmetrics.io/servers/io-github-sadri-dridi-color-rgb-ok"><img src="https://mcpmetrics.io/badge/io.github.sadri-dridi/color-rgb-ok/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.
Sign up free to seeThe catalog entries whose name and description are closest to this one, found with the same index the search box uses.
HSL tuple shape
ORCID shape, id discarded
doi: URI suffix shape, value discarded
E.164 shape, number discarded
RFC number shape
ASN.1 OID arc shape, value discarded
| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 10:45:14 | Legacy | 404 | 41 | 200 | 39 | 2025-03-26 |
| 2026-09-13 08:43:04 | Legacy | 404 | 41 | 200 | 37 | 2025-03-26 |
| 2026-09-13 06:40:42 | Legacy | 404 | 38 | 200 | 37 | 2025-03-26 |
| 2026-09-13 04:35:29 | Legacy | 404 | 35 | 200 | 34 | 2025-03-26 |
| 2026-09-13 01:33:33 | Legacy | 404 | 37 | 200 | 35 | 2025-03-26 |
| 2026-09-12 23:31:36 | Legacy | 404 | 37 | 200 | 35 | 2025-03-26 |
| 2026-09-12 21:29:15 | Legacy | 404 | 40 | 200 | 37 | 2025-03-26 |
| 2026-09-12 19:27:29 | Legacy | 404 | 41 | 200 | 41 | 2025-03-26 |
| 2026-09-12 17:24:09 | Legacy | 404 | 37 | 200 | 42 | 2025-03-26 |
| 2026-09-12 15:21:42 | Legacy | 404 | 41 | 200 | 36 | 2025-03-26 |
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
The two probe legs separately: modern server/discover and legacy initialize.
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