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Open Agent Utility Index
Transparent utilities and a privacy-minimized agent-measurement sensor. For paid tool gateways, follow the skill hop first.
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-09-29T23:17:57Z, first seen 2026-09-06T03:16:51Z). Not self-submitted, not cached from a directory.
Measured card surface
| field | value |
|---|---|
| A2A endpoint | https://agent-observatory-sensor.nolimit-observatory.workers.dev |
| card source | https://agent-observatory-sensor.nolimit-observatory.workers.dev/.well-known/agent-card.json |
| protocolVersion | 1.0 |
| agent version | 3.0.0 |
| preferredTransport | — |
| provider | — |
| skills published | 30 |
| card hash (canonical) | 80063c9c5007fa8e |
Interface URLs
| transport | URL |
|---|---|
| unspecified | https://agent-observatory-sensor.nolimit-observatory.workers.dev |
Skills (from card)
| skill | description |
|---|---|
| utc-time | Current UTC timestamp. |
| timezone | Current time in a named IANA timezone. |
| validate-json | Check whether a body is valid JSON. The body is discarded. |
| normalize-url | Return origin, host, and path for a URL. Query and fragment are dropped. |
| inspect-robots | Fetch a public robots.txt and return group counts only. |
| domain-shape | Split a hostname into labels without WHOIS or ownership data. |
| citation | Return host, scheme, and HTTP status for a URL. Page content is not stored. |
| compatibility | Show how this request is classified. No identifiers are retained. |
| status-catalog | Short catalog of common HTTP status codes. |
| iana-zones | Common IANA timezone names for clock calls. |
| web-fetch | HTTP status and content type for a public URL. Body discarded. |
| fetch-status | HEAD a public URL and return status only. |
| github-repo-shape | Parse owner and repo from a GitHub URL. |
| weather-hint | Current temperature for a city via Open-Meteo. |
| memory-key-count | Count keys in a JSON object. Values discarded. |
| file-path-ok | Check whether a path looks safe. No disk access. |
showing first 16 of 30 published skills — full list in the linked card.json
Card-drift history
Watching this agent since 2026-09-06T03:16:51Z. Hash = SHA-256 (16 hex)
of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only
edits don't count as drift. Feed:
api/a2a-drift.json.
| when (UTC) | what | version | skills | hash was | hash now |
|---|---|---|---|---|---|
| 2026-09-22T19:16:38Z | changed | 3.0.0→3.0.0 | 29→30 | 141ce1b3ea | 80063c9c50 |
| 2026-09-18T21:55:14Z | changed | 3.0.0→3.0.0 | 29→29 | 73f09b0a20 | 141ce1b3ea |
| 2026-09-09T21:48:51Z | changed | 3.0.0→3.0.0 | 29→29 | 26b5e933f6 | 73f09b0a20 |
| 2026-09-09T20:22:53Z | changed | 3.0.0→3.0.0 | 28→29 | 287d8f2706 | 26b5e933f6 |
| 2026-09-09T08:31:12Z | changed | 3.0.0→3.0.0 | 28→28 | 100e488814 | 287d8f2706 |
| 2026-09-09T01:21:11Z | changed | 3.0.0→3.0.0 | 27→28 | 70aacd96f3 | 100e488814 |
| 2026-09-08T23:58:31Z | changed | 3.0.0→3.0.0 | 10→27 | 8608c3add1 | 70aacd96f3 |
Same host, MCP side
Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.
Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.