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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 json-repair.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered tool descriptors via a single meta-router 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://json-repair.agentdiet.dev/v1/b2a-router)
Output
Returns a compressed (up to 85% token reduction) list of matching MCP servers or A2A tools relevant to the query, including tool descriptors that have passed the Prompt-Guard firewall. When an endpoint URL is submitted, returns verification status indicating whether it is indexed and flagged for safety.
Example use cases
Swarm router capability discovery
“Search the MCP meta-router for all tools that handle 'SEC filings' so my swarm agent can pick the right one without burning tokens on a huge tool list.”
Verify indexed endpoint safety
“Can you check if https://some-mcp-server.example.com/v1/tool is in the A2A index and passes the Prompt-Guard firewall before I add it to my agent pipeline?”
Find compression-capable tools
“I need to find MCP servers that support context compression — search the tool index and give me the top matches with their compressed descriptors.”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/b2a-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to discover and route to the right tool among hundreds of MCP servers or A2A agents without maintaining its own tool registry. It is especially valuable for multi-agent swarms that need token-efficient tool descriptors, or when you want firewall-filtered (Prompt-Guard) safety before connecting to an unfamiliar MCP endpoint. Prefer it over manually curating tool lists or querying individual MCP directories.
Side effects
- Query too vague — returns zero or low-relevance tool matches
- Endpoint URL not found in index — returns empty or not-indexed status
- Prompt injection detected by Prompt-Guard — request blocked with firewall rejection
- Payment not processed (x402) — returns 402 Payment Required before results are served
- Malformed query string — returns validation 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"
}Reviews
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