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x402broker A2A Router
x402
x402broker A2A Router is a paid API for AI agents from x402broker.com, paid per call via x402 or MPP, $0.01/call, status unknown (last checked 2026-10-20).
Discovers and routes requests across 500+ MCP servers and A2A tools via a single meta-router 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://x402broker.com/v1/a2a-router)
Output
Returns a list of matching MCP servers or A2A tool endpoints relevant to the query, including tool metadata, routing information, and compressed context to minimize token usage for the calling agent.
Example use cases
Finding the right MCP tool for web scraping
“I need to find an MCP server that handles web scraping and content extraction — can you search x402broker's tool index for the best available option?”
Discovering A2A agents for a multi-step swarm
“I'm building an agent swarm and need to discover which A2A tools are available for email verification, DNS recon, and company enrichment all in one go — search the broker index for those capabilities.”
Routing agent request to a specialized tool
“My agent needs to handle SEC EDGAR financial data — search the A2A router to find and route me to the right indexed tool for that, using a single connection.”
Technical details
Endpoint
GEThttps://x402broker.com/v1/a2a-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to discover or route to one of hundreds of MCP servers or A2A tools without managing individual connections. Ideal for agent swarms or orchestrators that need dynamic tool discovery with low token overhead and built-in prompt injection protection, rather than hard-coding specific tool URLs.
Side effects
- Query parameter missing or empty — returns 400 bad request
- No matching MCP servers or A2A tools found for the query — empty result set
- Prompt-Guard firewall blocks suspicious or injection-containing queries
- Rate limit or payment failure causes 402 response
- Upstream MCP server index unavailable — 503 service error
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"
}Tags
x402
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