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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/execute)
Output
Returns a list of matching MCP servers or A2A tools from the 500+ indexed catalog, including routing information, compressed responses (up to 85% token reduction), and safety-filtered output from the Prompt-Guard firewall. May include tool metadata, endpoint URLs, capability descriptions, and recommended routing paths.
Example use cases
Discovering tools for SEC filings
“Find me an MCP server or A2A tool that can pull SEC filings data — I want to know what's available in the index and get routed to the best option.”
Routing GitHub security audit capability
“Search the tool index for something that does GitHub security audits or code vulnerability scanning — I want to use it through the safe proxy with prompt-injection protection.”
Finding context compression tools
“What MCP servers in your index can help with context compression or token budget management? Route me to the best one with the 85% compression feature.”
Technical details
Endpoint
POSThttps://x402-audit.agentdiet.dev/v1/execute?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool can fulfill an unfamiliar capability at runtime, rather than hardcoding specific tool endpoints. Ideal for swarm architectures where agents must self-select the right downstream tool. Prefer this over direct tool calls when you need prompt-injection safety screening, token budget management across multiple tools, or unified access to 500+ tools through a single connection.
Side effects
- Empty or vague query returns low-relevance tool matches
- Query for an uncovered capability returns no results
- Prompt-Guard firewall may block or flag queries containing injection-like patterns
- Network timeout if multiple downstream MCP servers are polled
- Payment failure (HTTP 402) if x402 USDC payment is not attached or insufficient
- Malformed query (minLength not met) 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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