Base64url encode, input discarded
https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/base64url-ok/mcp ↗
Description
Base64url encode, input discarded
What our measurements say
Base64url encode, input discarded is a remote MCP server published at agent-observatory-sensor.nolimit-observatory.workers.dev. It has been probed 8 times since 9/12/2026. It answered in 8 of them (100.0%), a near-uninterrupted record. Median response time is 40 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.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some descriptions briefly explain the tool's purpose.
- Consistent parameter structure across all tools.
Weaknesses
- Tool names are vague or non-descriptive (e.g., 'agent-tool-index').
- Descriptions do not explain usage scenarios, only basic functionality.
- Parameters are irrelevant to tool purpose (e.g., 'city' for Base64 encoding).
- High overlap between tools with similar functions (e.g., URL validation tools).
- No error handling or constraints documented.
base64url-ok— Parameters like 'city' and 'host' are irrelevant to Base64 encoding.utc-time— No clear indication of when/why to use this tool.normalize-url— Overlaps with 'browser-url-ok' and 'web-fetch' for URL processing.validate-json— Description does not explain validation criteria.calc-eval— Parameters like 'zone' and 'feed' are irrelevant to arithmetic evaluation.
Verdict
Event narrative
Risk: low
- 2026-09-12T15:21:42.024Z — No change in status · No impact on agent reliability
- 2026-09-12T17:24:09.166Z — No change in status · No impact on agent reliability
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 passed · last run:
- Cold-start: cold 42ms → warm 41ms (penalty 1ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
base64url-okBase64url encode, input discarded
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
utc-timeCurrent UTC timestamp.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
timezoneCurrent time in a named IANA timezone.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
validate-jsonCheck whether a body is valid JSON. The body is discarded.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
normalize-urlReturn origin, host, and path for a URL. Query and fragment are dropped.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
inspect-robotsFetch a public robots.txt and return group counts only.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
domain-shapeSplit a hostname into labels without WHOIS or ownership data.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
citationReturn host, scheme, and HTTP status for a URL. Page content is not stored.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
compatibilityShow how this request is classified. No identifiers are retained.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
status-catalogShort catalog of common HTTP status codes.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
iana-zonesCommon IANA timezone names for clock calls.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
web-fetchHTTP status and content type for a public URL. Body discarded.
zonestringjsonstringurlstringhoststringcitystringquerystringpathstringrefstringfeedstring
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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