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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 across 500+ indexed MCP servers and A2A tools using a natural-language capability query, returning compressed, firewall-filtered matching endpoints in a single connection.
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/swarm-router)
Output
Returns a compressed, firewall-filtered list of matching MCP servers or A2A tools ranked by relevance to the query, with metadata about each tool's capabilities, endpoint URLs, and safety status. The response uses 85% token compression to minimize LLM context consumption.
Example use cases
Discovering a context compression tool
“Find me an MCP server that can compress long web pages or documents into compact tokens — something that reduces context size by a lot before I send it to my LLM.”
Routing to a GitHub security audit agent
“Search your tool index for any A2A agents or MCP servers that can audit GitHub repositories for security vulnerabilities — I need the best match available.”
Verifying a known endpoint before calling it
“Can you check if this endpoint URL https://some-mcp-tool.example.com/v1/query is a known, safe, and indexed MCP server before I have my agent call it?”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/swarm-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool is best suited for a given capability at runtime, especially in multi-agent swarm architectures where the right downstream tool isn't known in advance. Ideal when you want a single connection point that aggregates 500+ tools rather than maintaining individual integrations. Also useful for verifying whether a specific endpoint URL is indexed and safe before calling it.
Side effects
- Empty query string returns 400 validation error
- No matching tools found for obscure capability queries returns empty result set
- Endpoint URL verification fails if URL is not in the index
- Rate limiting or payment failure (x402) blocks the request
- Prompt-Guard firewall may flag and reject queries containing injection-like 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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