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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 x402-audit.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
Searches and routes queries across 500+ indexed MCP servers and A2A tools with token compression and prompt-injection firewall 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://x402-audit.agentdiet.dev/v1/a2a-mesh)
Output
Returns a list of matching MCP servers or A2A tool endpoints relevant to the query, with metadata about each tool, capability descriptions, and token-compressed summaries. Responses pass through a Prompt-Guard firewall to block injected instructions in tool responses.
Example use cases
Finding SEC filing tools for agent
“I need to find MCP servers or A2A tools that can pull SEC filings for public companies — search the mesh index and show me the best options.”
Discovering GitHub audit capabilities
“Which tools in the MCP ecosystem can do GitHub security audits? Search the agent tool index and return anything relevant with their endpoints.”
Routing to context compression tool
“I want to find an agent tool that does context compression or token reduction — search the A2A mesh and tell me what's available.”
Technical details
Endpoint
POSThttps://x402-audit.agentdiet.dev/v1/a2a-mesh?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hard-coding tool endpoints. Ideal for agent orchestration layers, swarm routers, or any workflow where the right downstream tool is not known ahead of time. Prefer this over manual MCP registries when you need safety filtering (prompt-injection protection) and token-compressed responses in a single call.
Side effects
- No matching tools found for the query — returns empty result set
- Query too vague to surface relevant tools — try more specific capability terms
- Prompt-Guard blocks a result suspected of containing injected content
- Upstream MCP server unreachable — partial results returned
- Payment required (HTTP 402) if x402 credit is not attached
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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