SignalDesk AI MCP Search

x402

SignalDesk AI MCP Search is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-13).

Searches the Model Context Protocol (MCP) server registry by keyword and returns matching MCP server listings with connection details

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

Output

Returns a JSON object containing: source metadata (provider name, fetch time, expiry, source URL), an array of matching MCP server objects (each with name, description, version, remote connection URLs, required auth headers), a pagination cursor, and flags indicating whether metadata is untrusted or transformed.

Example use cases

Discover GitHub MCP tools

“Search the MCP server registry for anything related to 'github' and give me up to 10 results — I want to find tools that connect AI assistants to GitHub repos.”

Find Obsidian note-taking integrations

“Can you search the MCP registry for 'obsidian' and return the top 3 matches? I'm looking for MCP servers that can help me access my Obsidian vault from an AI agent.”

Locate database MCP connectors

“Look up MCP servers related to 'postgres' in the registry — show me 5 results so I can find one that lets my AI agent query a PostgreSQL database.”

Technical details

Endpoint

GEThttps://x402-agent.kariguetoazul.workers.dev/api/discovery/mcp-search?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent needs to discover available MCP servers by keyword from the official MCP registry. It is the right choice when the goal is to find connection details (URLs, auth headers) for MCP-compatible tools matching a topic. Prefer this over general web search when you specifically need structured MCP server metadata including version, remote endpoints, and authentication requirements.

Side effects

Empty result set if query string matches no MCP servers
Query string missing or under minimum length returns validation error
Limit parameter outside 1-20 range rejected
Payment not included or insufficient USDC causes 402 response
Upstream MCP registry unavailable causes timeout or 5xx error
Stale cached data if upstream registry was fetched more than 30 minutes ago

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "source": {
      "provider": "Official MCP Registry",
      "expires_at": "2026-10-02T10:14:51.908Z",
      "fetched_at": "2026-10-02T09:44:51.908Z",
      "source_url": "https://registry.modelcontextprotocol.io/v0.1/servers?search=github&limit=3",
      "transformed": true
    },
    "servers": [
      {
        "name": "ai.smithery/Hint-Services-obsidian-github-mcp",
        "remotes": [
          {
            "url": "https://server.smithery.ai/@Hint-Services/obsidian-github-mcp/mcp",
            "type": "streamable-http",
            "headers": [
              {
                "name": "Authorization",
                "value": "Bearer {smithery_api_key}",
                "isSecret": true,
                "isRequired": true,
                "description": "Bearer token for Smithery authentication"
              }
            ]
          }
        ],
        "version": "0.4.0",
        "packages": [],
        "description": "Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy…"
      },
      {
        "name": "ai.smithery/saidsef-mcp-github-pr-issue-analyser",
        "remotes": [
          {
            "url": "https://server.smithery.ai/@saidsef/mcp-github-pr-issue-analyser/mcp",
            "type": "streamable-http",
            "headers": [
              {
                "name": "Authorization",
                "value": "Bearer {smithery_api_key}",
                "description": "Bearer token for Smithery authentication"
              }
            ]
          }
        ],
        "version": "1.15.0",
        "packages": [],
        "description": "A Model Context Protocol (MCP) application for automated GitHub PR analysis and issue management.…"
      },
      {
        "name": "ai.smithery/smithery-ai-github",
        "remotes": [
          {
            "url": "https://server.smithery.ai/@smithery-ai/github/mcp",
            "type": "streamable-http",
            "headers": [
              {
                "name": "Authorization",
                "value": "Bearer {smithery_api_key}",
                "isSecret": true,
                "isRequired": true,
                "description": "Bearer token for Smithery authentication"
              }
            ]
          }
        ],
        "version": "1.0.0",
        "packages": [],
        "description": "Access the GitHub API, enabling file operations, repository management, search functionality, and…"
      }
    ],
    "next_cursor": "ai.smithery/smithery-ai-github:1.0.0",
    "metadata_only": true,
    "untrusted_metadata": true
  }
}

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