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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 and discovers the right MCP server or A2A tool across 500+ indexed endpoints, routing queries through a prompt-injection firewall with 85% token compression.
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/v1/web-rag-shield-dag)
Output
Returns a ranked list of matching MCP servers or A2A tools relevant to the query, with compressed metadata (85% token reduction), safety-filtered through the Prompt-Guard firewall, including endpoint references and capability summaries.
Example use cases
Finding the right MCP tool for an agent
“I need to find an MCP server in the index that handles GitHub repository security audits — can you search for it and give me the best match with compressed metadata?”
Verifying a third-party endpoint before use
“Before my agent calls this endpoint https://some-mcp-server.example.com/v1/tool, can you run it through the discovery router to verify it's indexed and safe to use?”
Discovering tools for a multi-agent swarm
“I'm building a swarm of agents and need to find all available tools for B2B lead enrichment and company data — search the 500+ MCP index and give me the top options.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/web-rag-shield-dag?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover the right MCP server or A2A tool from a large ecosystem without hardcoding tool lists, especially when token budget is constrained (85% compression) or when routing through untrusted third-party tools that require injection-safe proxying.
Side effects
- No matching tools found for the query — returns empty result set
- Query too vague or short — may return irrelevant or low-confidence matches
- Endpoint URL verification fails if the URL is not indexed
- Payment not processed (x402 HTTP 402) — call blocked if $0.01 USDC payment missing
- Firewall blocks response if tool metadata contains prompt injection patterns
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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