https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/keep-alive-ok/mcp ↗
Keep-Alive timeout band, value discarded
Keep-Alive timeout band, value discarded is a remote MCP server published at agent-observatory-sensor.nolimit-observatory.workers.dev. It has been probed 18 times since 9/12/2026. It answered in 18 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.
keep-alive-ok — Description is identical to tool name, provides no actionable contextutc-time — Description lacks explanation of when/why to use this tooltimezone — Parameter list is identical to other tools, no differentiationvalidate-json — Description mentions discarding input but doesn't explain validation criteriaagent-tool-index — Name is too generic and doesn't clarify its gateway purposetools/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.
keep-alive-okKeep-Alive timeout band, value discarded
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.
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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.
Keep-Alive timeout band, value discarded
SQLite rowid integer band, value discarded
generic flake id digit band, value discarded
Tabindex integer band, value discarded
CUID2 length band, value discarded
ISO-8859-1 byte band, value discarded
| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-14 02:22:47 | Legacy | 404 | 35 | 200 | 34 | 2025-03-26 |
| 2026-09-14 00:19:26 | Legacy | 404 | 37 | 200 | 38 | 2025-03-26 |
| 2026-09-13 22:17:36 | Legacy | 404 | 36 | 200 | 33 | 2025-03-26 |
| 2026-09-13 21:01:02 | Legacy | 404 | 38 | 200 | 36 | 2025-03-26 |
| 2026-09-13 18:57:30 | Legacy | 404 | 44 | 200 | 37 | 2025-03-26 |
| 2026-09-13 16:52:42 | Legacy | 404 | 43 | 200 | 44 | 2025-03-26 |
| 2026-09-13 14:49:35 | Legacy | 404 | 43 | 200 | 35 | 2025-03-26 |
| 2026-09-13 12:47:19 | Legacy | 404 | 46 | 200 | 36 | 2025-03-26 |
| 2026-09-13 10:45:14 | Legacy | 404 | 39 | 200 | 38 | 2025-03-26 |
| 2026-09-13 08:43:04 | Legacy | 404 | 38 | 200 | 37 | 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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