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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-security.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 token-compressed results with 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://mcp-security.agentdiet.dev/v1/x402-gateway)
Output
Returns a list of matching MCP servers or A2A tools relevant to the capability query, with metadata about each tool, compressed to reduce token usage (~85% compression). Results pass through a Prompt-Guard firewall that filters prompt-injection content before returning to the caller.
Example use cases
Discover context compression MCP tools
“Search the MCP tool index for anything related to 'context compression' — I want to find a server my agent can call to reduce token usage in long conversations.”
Verify a suspicious MCP endpoint URL
“Can you check this endpoint URL against the MCP registry to verify it's a legitimate tool and not something malicious before I let my agent call it?”
Route agent to SEC filings capability
“My agent needs to pull 10-K filings but I don't know which MCP server handles that — search the tool index for 'SEC filings' and tell me what's available.”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/x402-gateway?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding a specific tool. Ideal for multi-agent swarm architectures where the right downstream tool isn't known ahead of time. Prefer this over manual MCP server lists when you need firewall-filtered, token-compressed results from a broad index of 500+ tools in a single connection.
Side effects
- Empty query string returns validation error (query is required, minLength 1)
- No matching tools found for obscure capability queries returns empty result set
- Payment required (HTTP 402) if x402 micropayment not provided ($0.01 per call)
- Endpoint URL verification may fail if the target URL is unreachable or not in the index
- Prompt-Guard firewall may strip or flag results containing injection-like content
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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Zero review prompt (fires after every successful call)
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