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Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router is a paid API for AI agents from serp-extract.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
Meta-router that searches 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered tool discovery results for agent swarms.
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/a2a-router)
Output
Returns a compressed (up to 85% token reduction) list of matching MCP servers or A2A tool endpoints relevant to the query, including tool metadata, filtered through a Prompt-Guard firewall to block prompt injection risks. Response is a JSON object with matched tools and their routing details.
Example use cases
Agent swarm tool routing
“I'm building an agent swarm and need to find the right MCP server for 'context compression' — can you query the A2A router index and return the top matching tools with their endpoints?”
Capability discovery for onboarding agent
“My new AI agent needs to know what tools are available for 'GitHub security audits' — search the 500+ MCP index and give me the compressed list of matching capabilities it can use.”
Safe proxy lookup for untrusted tools
“Before my agent calls an external tool, I want to verify this endpoint URL through the A2A router's Prompt-Guard firewall — can you run 'https://some-mcp-server.example.com/tool' through the safe-proxy check?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/a2a-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hard-coding tool URLs. Especially useful for agent swarms that need runtime tool routing, or when you want firewall-filtered, token-compressed tool metadata instead of raw MCP registry dumps.
Side effects
- Empty or too-vague query returns no matches or irrelevant tools
- Endpoint URL verification fails if the target is offline or malformed
- Payment required (HTTP 402) if x402 credentials are missing or insufficient
- Rate limiting if many queries are sent without idempotency keys
- Firewall blocks legitimate tools that pattern-match prompt injection heuristics
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify |
Output
Schema · Response
{
"type": "object"
}Reviews
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