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Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router — Catalog Search
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router — Catalog Search is a paid API for AI agents from serp-extract.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches a catalog of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed metadata and Prompt-Guard firewall protection.
Price / call$0.01
Success—
StatusUnknown
How this service works
Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live x402 v2, IETF MPP & MCP endpoint at https://serp-extract.agentdiet.dev/v1/broker/catalog)
Output
A catalog listing of matching MCP servers and A2A tools relevant to the query, with token-compressed metadata (up to 85% compression) describing each tool's capabilities, endpoint URLs, and compliance status, filtered through a Prompt-Guard firewall.
Example use cases
Finding a context compression tool
“Search the MCP catalog for tools that do context compression — I'm building a swarm of agents and need something that can reduce token usage by a lot.”
Verifying a specific endpoint
“Can you check if this URL is listed in the agentdiet broker catalog and whether it's compliant: https://some-agent.example.com/mcp”
Discovering GitHub security audit agents
“I need a tool that can audit GitHub repos for security issues — search the A2A and MCP catalog for anything that fits that capability.”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/broker/catalog?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover available MCP servers or A2A tools by capability rather than hardcoding tool URLs. Especially useful for swarm orchestration, dynamic tool routing, and verifying whether a known endpoint is catalogued and compliant. Prefer over manual curation when you need access to 500+ tools from a single connection with built-in prompt-injection protection.
Side effects
- Empty query string returns validation error (query is required, minLength 1)
- Query matches no tools in catalog — returns empty results set
- Endpoint URL verification returns not-found if URL is not indexed
- Rate limiting or payment failure (x402) if quota exceeded
- Catalog may be stale if a listed MCP server has gone offline
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum number of items to return per page (1-100) |
| queryrequired | string | Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify |
| cursor | string | Opaque pagination cursor for fetching the next page |
Output
Schema · Response
{
"type": "object"
}Reviews
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