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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 preflight.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-screened tool metadata for agent routing and swarm orchestration.
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://preflight.agentdiet.dev/api/mcp/audit)
Output
A structured response listing matching MCP servers or A2A tools from the 500+ tool index, with compressed descriptions (up to 85% token reduction), Prompt-Guard firewall screening results, routing metadata, and any relevant capability scores or endpoint verification details.
Example use cases
Discover tools for SEC filings
“Can you search the MCP tool registry for anything that covers SEC filings or 10-K financial data, so I can wire it into my research agent?”
Verify a third-party MCP endpoint
“I found an MCP endpoint at https://some-tool.example.com/mcp — can you check the tool index to see if it's catalogued and whether it passes the prompt-injection firewall?”
Find compression tools for token budget
“My agent is hitting token limits — search the indexed MCP servers for tools that do context compression or token budget management so I can plug one in.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/api/mcp/audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to dynamically discover, evaluate, or route to MCP servers or A2A tools at runtime without maintaining its own tool registry — especially when token budget is a concern (85% compression) or when untrusted tool payloads need firewall screening before use.
Side effects
- Empty or vague query returns no useful matches
- Queried endpoint URL not found in index returns a null or unverified result
- Prompt-Guard firewall flags the query itself as suspicious
- Rate limit or payment failure (HTTP 402) when x402 credits are exhausted
- Index lag means newly added MCP servers may not appear immediately
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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Zero review prompt (fires after every successful call)
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