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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 routes across 500+ indexed MCP servers and A2A tools using a single connection, with token compression and prompt-injection 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://preflight.agentdiet.dev/v1/web-rag-shield-dag)
Output
Returns a list of matching MCP servers or A2A tools relevant to the query, with token-compressed descriptions (85% compression), safety/firewall status, and routing metadata so the agent can select and connect to the right tool.
Example use cases
Agent swarm tool selection
“I'm building a multi-agent swarm and need to find the best MCP tools for GitHub code security auditing — can you search the tool index and return the top options with compressed descriptions?”
Safe endpoint URL verification
“Before my agent calls this endpoint — https://some-mcp-server.example.com/v1/query — can you run it through the tool router to verify it's indexed, safe, and not flagged for prompt injection?”
Capability gap discovery
“My agent needs to handle DEX token intelligence and on-chain risk analysis but I don't know which MCP servers cover those capabilities — can you search the 500+ tool index and tell me what's available?”
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, compare, or route to the right MCP server or A2A tool from a large index without manually curating integrations. Ideal for swarm orchestration, capability gap filling, and safe proxying where prompt-injection protection is required. Prefer this over manually hardcoded tool lists or direct MCP connections when the target tool is unknown or untrusted.
Side effects
- Query string is empty or too vague — returns no results or generic matches
- Queried endpoint URL is not indexed — returns not-found or unverified status
- Firewall flags the query as containing prompt-injection patterns — request is blocked
- Service temporarily unavailable due to upstream MCP index sync issues
- Payment not processed (x402) — returns 402 Payment Required before results are delivered
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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