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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 mcp-compiler.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 results via 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://mcp-compiler.agentdiet.dev/v1/b2a-router)
Output
Returns a compressed, token-optimized list of matching MCP servers or A2A tools from a 500+ item index, including endpoint metadata, capability descriptions, and safety-filtered results from the Prompt-Guard firewall. Response is a JSON object with tool matches relevant to the query.
Example use cases
Discovering tools for a new agent workflow
“I'm building an agent pipeline and need to find MCP servers that handle GitHub security audits — can you search the tool registry and tell me what's available?”
Routing a swarm to the right capability
“My agent swarm needs to handle context compression tasks — search the MCP index for tools that support this so I can route requests to the best one.”
Verifying a specific MCP endpoint
“Can you check if this endpoint URL is a valid, indexed MCP server in the registry: https://mcp-compiler.agentdiet.dev/v1/b2a-router?”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/b2a-router?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding tool URLs. Especially useful in multi-agent swarm architectures where the right downstream tool is not known in advance. Prefer over manual tool registries or static lists when you need 500+ tool coverage, token-compressed responses, and built-in prompt injection safety filtering.
Side effects
- Empty query string returns validation error (query is required, minLength 1)
- No matching tools found for niche or misspelled capability query
- Endpoint URL verification returns unrecognized/unlisted result if URL is not in index
- Rate limiting or payment failure (x402) if usage quota exceeded
- Firewall may filter or flag results if tool metadata triggers Prompt-Guard rules
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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