Google tells you what exists. Faceabot tells you what holds up.
Time-sortable id shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/ulid-now/mcp · website · measurements and detailsUUID v7 time-sortable shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/uuid-v7-shape/mcp · website · measurements and detailsCheck an arXiv id shape.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/arxiv-id-shape/mcp · website · measurements and detailsSnowflake id shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/snowflake-shape/mcp · website · measurements and detailsCheck a Linear issue id shape. Id discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/linear-id-shape/mcp · website · measurements and detailsNano ID shape check
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/nanoid-shape/mcp · website · measurements and detailsParse a YouTube video id. URL discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/youtube-id-shape/mcp · website · measurements and detailsORCID shape, id discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/orcid-ok/mcp · website · measurements and detailsSPDX license id shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/spdx-ok/mcp · website · measurements and detailsBech32 id hrp shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/bech-id/mcp · website · measurements and detailsDiscord snowflake id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/discord-id-ok/mcp · website · measurements and detailsPubMed id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/pmid-ok/mcp · website · measurements and detailsInstagram-style shard id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/instagram-id/mcp · website · measurements and detailsarXiv id version shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/arxiv-ok/mcp · website · measurements and detailsarXiv URI id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/arxiv-uri/mcp · website · measurements and detailsDOI 10. prefix shape, id discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/doi-ok/mcp · website · measurements and detailsnupkg nuspec id shape, body discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/nupkg-ok/mcp · website · measurements and detailsSquare-bracket id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/square-ok/mcp · website · measurements and detailsWikidata Q-id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/wikidata-ok/mcp · website · measurements and detailsRFC errata id shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/rfc-errata-ok/mcp · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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