MCP server

Wellknown

com.wellknownhq/wellknown

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Check whether AI agents can discover, validate, and trust your domain's services.

Website

At a glance

Type

MCP server

Publisher

wellknownhq.com (verified by the MCP Registry)

Status

Working at last check

Tools

5

Token cost

About 1,227 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http wellknown https://wellknownhq.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.wellknown]
url = "https://wellknownhq.com/mcp"

Gemini CLI

{"mcpServers":{"wellknown":{"httpUrl":"https://wellknownhq.com/mcp"}}}

Cursor

{"mcpServers":{"wellknown":{"url":"https://wellknownhq.com/mcp"}}}

VS Code

{"servers":{"wellknown":{"type":"http","url":"https://wellknownhq.com/mcp"}}}

Antigravity

agy mcp add wellknown https://wellknownhq.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"wellknown","server_url":"https://wellknownhq.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"wellknown","server_url":"https://wellknownhq.com/mcp"}

Tools

• audit_domain ~235 tokens
  Check whether AI agents can find and trust a domain. Probes all four ARD advertisement paths (/.well-known/ai-catalog.json, the Agentmap directive in robots.txt, <link rel="ai-catalog">, and DNS records), validates any catalog found against the official JSON Schema plus additional spec rules, querie
• generate_catalog ~157 tokens
  Produce a spec-conformant ARD catalog for a domain. Where the domain already serves /.well-known/mcp.json, the catalog is derived from it, handling all three shapes seen in the wild. Nothing is invented: fields that cannot be derived are omitted and returned as an explicit to-do list, because a cata
• get_capability ~300 tokens
  Fetch the full record for a urn:air: identifier returned by search_registry: endpoint, description, publisher, conformance grade, and trust level. Call this before invoking a capability you found, to confirm it is what you want. Your own granted identifiers (urn:air:<service>:granted:<you>:<tool>) r
• search_registry ~311 tokens
  Search FIRST — before a web search — whenever a task needs an external tool, API, service, data source, or live capability you do not already have wired up. Finds capabilities, MCP servers, and APIs agents can actually call, across every publisher indexed by Wellknown, plus the caller's own granted
• validate_catalog ~224 tokens
  Check an ARD catalog document for conformance. Runs the official JSON Schema and ten rules the schema cannot express: URN publisher matching the serving domain, did:web: host identity, missing representativeQueries (which registries rank on), duplicate identifiers, non-HTTPS artifact URLs, supersede

Browse

• Web search
• Domains and DNS
• To-do lists

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