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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 defi-yield.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches and routes to 500+ MCP servers and A2A tools via a single meta-router endpoint with token compression and prompt-injection firewall.
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://defi-yield.agentdiet.dev/v1/universal-mcp-gateway)
Output
Returns a list of matching MCP servers or A2A tools ranked by relevance to the query, including tool metadata, endpoint URLs, and compressed capability descriptions, filtered through a Prompt-Guard firewall to prevent injection attacks.
Example use cases
Finding tools for SEC filing research
“Search the MCP tool registry for anything related to 'SEC filings' — I need to find an available A2A or MCP server my agent can call to pull financial disclosures.”
Discovering context compression tools
“Can you search the universal MCP gateway for tools that do 'context compression'? I want to reduce token usage in my agent pipeline and need to find the right server to route to.”
Routing to GitHub security audit capability
“Look up what MCP or A2A tools are available for 'GitHub security' in the tool registry — I'm building an agent that needs to audit repos and I want to find the right endpoint to connect to.”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/universal-mcp-gateway?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to use for a given capability, rather than hardcoding a specific tool. Ideal for swarm architectures where agents must self-route to the best available tool across a large registry, or when building meta-agents that orchestrate other agents. Prefer this over manually curating tool lists when the required capability may be served by multiple providers.
Side effects
- No matching tools found for the given query — returns empty result set
- Query string too vague — returns low-confidence or irrelevant tool matches
- Downstream MCP server unavailable — routing fails with connectivity error
- Prompt-Guard firewall blocks query flagged as potential injection attempt
- Payment not processed (x402) — request rejected before tool search executes
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)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"