Google tells you what exists. Faceabot tells you what holds up.
W3C MCP — web-standards lookup over w3c/browser-specs (GitHub, CF-reachable).
MCP endpoint :https://gateway.pipeworx.io/w3c/mcp · website · measurements and detailsW3C traceparent 4-part shape, value discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/traceparent/mcp · website · measurements and detailsW3C DID issuance and verification for autonomous AI agents
MCP endpoint :https://hive-mcp-identity.onrender.com/mcp · website · measurements and detailsSearch and verify 360K+ business entities with trust scores and W3C credentials.
MCP endpoint :https://mcp.nordax.ai/mcp · measurements and detailsPersistent memory for AI agents. Semantic search, memory graph, W3C DID identity.
MCP endpoint :https://ais.agentsandswarms.ai/mcp · measurements and detailsFirst production Authority-MCP. W3C VC attested by Jassverband Schweiz.
MCP endpoint :https://jasswiki.ch/mcp/http · website · measurements and detailsNeutral W3C DID/VC identity and reputation oracle for AI agents (did:key/did:web, eddsa-jcs-2022).
MCP endpoint :https://maxiaworld.app/mcp · website · measurements and detailsDrive devices and APIs from their W3C Thing Description. You gate every operation.
Package pypi :thingctx · website · measurements and detailsAI agent identity, W3C credentials, EU AI Act compliance. 47 MCP tools.
Package pypi :attestix · website · measurements and detailsCryptographic identity for AI agents: W3C DIDs, Verifiable Credentials, post-quantum crypto
Package npm :@astracipher/core · website · measurements and detailsSign and verify W3C Verifiable Credentials so AI agents can cryptographically authorize actions.
Package pypi :vouch-mcp · website · measurements and detailsCheck websites against the W3C Web Sustainability Guidelines and look up the guidelines
Package npm :@sustainablewebsites/wsg-check · website · measurements and detailsExtract a website’s design tokens (colors, type, spacing, shadows) as DESIGN.md, W3C, or CSS.
Package npm :@designscan/extractor · 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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