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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 a meta-index of 500+ MCP servers and A2A tools by capability query, routing through a Prompt-Guard firewall with 85% token compression
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/security-audit-dag)
Output
Returns a filtered, token-compressed list of matching MCP servers and A2A tools from a 500+ item index, including tool metadata and routing information, with prompt-injection filtered out by the Prompt-Guard firewall.
Example use cases
Discover tools for SEC filing retrieval
“Find me MCP servers or A2A tools that support SEC filings — I want to know what's available in your index before I connect my research agent.”
Route agent through Prompt-Guard firewall
“Search your tool index for 'github security audit' and give me a safe-proxied connection so my swarm doesn't get exposed to prompt injection.”
Find context compression MCP servers
“Look up which MCP tools in your index support context compression — I'm trying to cut token usage for my agent pipeline.”
Technical details
Endpoint
POSThttps://x402-audit.agentdiet.dev/v1/security-audit-dag?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without maintaining its own registry, especially when prompt injection safety and token efficiency are concerns. Prefer over manual tool registries when working with swarm architectures or when you need a single connection point to hundreds of tools.
Side effects
- Empty query string returns validation error
- No matching tools found for obscure capability query returns empty results
- Endpoint URL verification fails if the target is offline
- Rate limiting or payment failure if x402 payment is not processed
- Prompt-Guard may block or redact results flagged as injection attempts
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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