Connect over MCP
StealthStack is an honest, indexed search of the agentic web. It crawls Agentic Resource Discovery (ARD) catalogs and indexes the skills, MCP servers, A2A agents and catalogs they publish, with real crawl provenance and structural trust signals. It is not a marketplace: you connect to each resource directly over its own protocol, and StealthStack never brokers the connection.
https://stealthstack.ai/mcp- Streamable HTTP
- No account or API key
- Read-only tools
Connect
The remote MCP server is https://stealthstack.ai/mcp (Streamable HTTP). It needs no account, API key or
sign-in, and every tool is read-only.
Claude
- Open Customize → Connectors.
- Click +, then Add custom connector.
- Enter
https://stealthstack.ai/mcpas the remote MCP server URL. Leave the OAuth fields under Advanced settings empty. - Click Add. To use it in a chat, enable it from the + button → Connectors.
On Team and Enterprise plans an Owner adds it first under Organization settings → Connectors (Add → Custom → Web); members then click Connect on it in Customize → Connectors.
Claude Code
claude mcp add --transport http stealthstack https://stealthstack.ai/mcpAdd --scope user to make it available in every project.
Any MCP client
Point a Streamable HTTP client at https://stealthstack.ai/mcp. By hand: POST JSON-RPC 2.0 to that
URL with Accept: application/json, text/event-stream. Start with initialize,
send the returned Mcp-Session-Id header on later requests, then call tools/list and tools/call.
curl -i https://stealthstack.ai/mcp \
-H 'content-type: application/json' \
-H 'accept: application/json, text/event-stream' \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"my-client","version":"1.0"}}}'Tools
search_resources- Ranked free-text search over resource names, descriptions and tags, best match first. Optional kind, domain and trust filters; up to 50 results (default 10).
list_resources- Browse the index with optional kind, domain and trust filters. Returns a total, a breakdown by kind and a page of resources (up to 50, default 25).
get_resource- The full record for one resource by its URN (urn:ai: and urn:air: are both accepted), including how to connect to it.
Results include the resource's connect URL when its publisher provides one; otherwise the inline connection or pull details.
Try asking
- “Use StealthStack to find a skill that converts an Avro file to CSV.”
- “List the domain-anchored MCP servers in the StealthStack index.”
- “Get the StealthStack record for urn:air:stealthstack.ai:skill:parquet and tell me how to connect to it.”
What the trust status means
Every record carries a trust status. It is a structural check, based on ARD's publisher-authority binding (§4.5.1): does the publisher name in the resource's URN match the domain that served it? We do not check cryptographic attestations or prove who controls a domain.
verifiedshown as domain-anchored- The URN's publisher matches the host of the catalog that published it, so the listing is self-consistent with the domain it claims.
unverifiedshown as relayed- Not anchored by us: for example, relayed as-is from a third-party registry such as Hugging Face.
failedshown as domain mismatch- The URN's publisher does not match the host that served it. Treat it as untrusted; it may be spoofed.
A listing is not an endorsement, and no trust status says a resource is safe to use. See How trust works.