Google tells you what exists. Faceabot tells you what holds up.
Heading level 1-6 shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/heading-level/mcp · website · measurements and detailsHeading level 1-6 shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/heading-n/mcp · website · measurements and detailsMarkdown heading count, text discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/md-heading-count/mcp · website · measurements and detailsMarkdown heading count, body discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/markdown-ok/mcp · website · measurements and detailsLook up any domain, IP address or AS number: hosting, DNS, registration, email, TLS and headers.
MCP endpoint :https://heade.rs/mcp · website · measurements and detailsSource-backed market views by talking head, topic, ticker, and horizon, with original links.
MCP endpoint :https://www.headge.com/mcp · measurements and detailsdocs heading-anchor charset, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/docs-anchor2/mcp · website · measurements and detailsdocs heading-anchor charset, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/docs-anchor-ok/mcp · website · measurements and detailsLake and reservoir water levels from satellite radar altimetry —
MCP endpoint :https://gateway.pipeworx.io/water-levels/mcp · website · measurements and detailsABS-EE (Reg AB II) trust-level rollups — auto loan / auto lease
MCP endpoint :https://gateway.pipeworx.io/abs-loan-level/mcp · website · measurements and detailsJSON top-level key count, values discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-keys-ok/mcp · website · measurements and detailsYAML top-level key count, values discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/yaml-keys-ok/mcp · website · measurements and detailsRiver levels & flood alerts: USGS gauges. $0.01/query. Register in-session — free testnet funds.
MCP endpoint :https://a2awire.com/mcp/data/riverwatch-usgs-river-levels-stream-flow-gauges-dc094e/http · website · measurements and detailsFree dealer-gamma call walls, put walls and gamma flip for ES, NQ, SPX and QQQ, graded daily.
MCP endpoint :https://www.sharpnel-trading.com/mcp · website · measurements and detailsLive barrier status and closure forecasts for ~1,600 UK level crossings. Public data, no auth.
MCP endpoint :https://mindthegates.uk/mcp · website · measurements and detailsETag shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/etag-shape/mcp · website · measurements and detailsCUID shape check
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cuid-shape/mcp · website · measurements and detailsCheck a DOI shape.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/doi-shape/mcp · website · measurements and detailsISBN digit shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/isbn-shape/mcp · website · measurements and detailsKSUID shape check
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/ksuid-shape/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
Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Open reliability data · Add Faceabot to your AI · Help · Privacy · Terms