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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).
Searches and routes across 500+ indexed MCP servers and A2A tools via a single connection, with token compression and prompt injection 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://serp-extract.agentdiet.dev/v1/b2a-router)
Output
Returns a list of matching MCP servers or A2A tools relevant to the query, with metadata about each tool's capabilities, endpoint URLs, and token-compressed descriptions — filtered through a Prompt-Guard firewall to block injection attacks.
Example use cases
Routing agent task to right tool
“I'm building an agent swarm and need to find which of the 500+ indexed MCP servers handles GitHub security audits — search the tool registry for 'github security' and tell me what's available.”
Discovering context compression tools
“My agent pipeline is hitting token limits — search the tool index for any MCP or A2A tools that do context compression so I can plug one in.”
Verifying an endpoint is indexed
“Can you check if the endpoint https://serp-extract.agentdiet.dev/v1/domain-recon is listed in the A2A tool registry and what capabilities it's indexed under?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/b2a-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to dynamically discover which tool or MCP server to use for a given task, rather than hard-coding a specific API. It is especially useful in swarm or orchestration architectures where the right downstream capability is not known in advance, or when you want a single connection point across 500+ tools with built-in prompt injection safety.
Side effects
- Empty query string returns validation error (minLength:1 required)
- No matching tools found for obscure or misspelled capability queries
- Prompt-Guard firewall may block queries containing injection-like patterns
- Payment required (HTTP 402) if x402 payment header is missing or invalid
- Timeout if the meta-router index is temporarily unavailable
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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