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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 x402broker.com, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).
Searches and routes across 500+ MCP servers and A2A tools via a single meta-router connection with token compression and prompt safety filtering.
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://x402broker.com/v1/a2a-mesh)
Output
Returns a compressed list of matching MCP servers or A2A tool endpoints relevant to the query, including tool metadata, capability summaries, and routing information, with 85% token compression applied and Prompt-Guard firewall screening.
Example use cases
Discover tools for lead enrichment
“Can you search the MCP tool index for anything that handles B2B lead enrichment or company data — I want to find the right server to wire into my sales agent.”
Route agent to vulnerability scanner
“Find me an MCP server or A2A tool that does open-source package vulnerability scanning so I can plug it into my security pipeline.”
Verify endpoint before routing
“Check the tool registry at x402broker to see if there's a verified endpoint for DEX whale orderflow analysis — I want to confirm it exists before routing my trading agent to it.”
Technical details
Endpoint
POSThttps://x402broker.com/v1/a2a-mesh?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding a specific tool. Ideal for swarm architectures, multi-agent orchestration, or situations where the right downstream tool is unknown at design time. Also useful for verifying whether a specific endpoint URL is indexed and safe to call.
Side effects
- Query too vague returns low-relevance or empty results
- Prompt injection attempts blocked by Prompt-Guard firewall
- Downstream MCP server unavailable causing routing failure
- Malformed query string returns validation error
- Payment not accepted causes HTTP 402 rejection
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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