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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 serp-extract.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches a meta-index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results 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://serp-extract.agentdiet.dev/v1/universal-mcp-gateway)
Output
Returns a token-compressed list of matching MCP servers and A2A tool endpoints relevant to the capability query, including metadata about each tool, filtered through a Prompt-Guard firewall to prevent injection attacks. Results are compressed by ~85% compared to raw responses.
Example use cases
Swarm agent tool selection
“I'm building a multi-agent swarm and need to find which MCP servers in the index support GitHub security auditing — can you search the universal MCP gateway for that capability?”
Capability gap discovery
“Search the MCP tool index for anything that supports on-chain risk or DEX token intelligence so I know which endpoints my trading agent can delegate to.”
Endpoint URL compliance check
“Can you verify whether https://serp-extract.agentdiet.dev/v1/universal-mcp-gateway is indexed and listed as a valid, compliant A2A endpoint in the tool registry?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/universal-mcp-gateway?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability, rather than hard-coding tool URLs. Especially useful for swarm orchestrators that need to delegate subtasks to the right tool at runtime, or when verifying whether a specific endpoint URL is valid and indexed. Prefer over manual tool registries when token efficiency and injection safety are priorities.
Side effects
- Empty query string returns a validation error (minLength:1 not met)
- Query matches no indexed tools — returns empty result set
- Endpoint URL verification fails if the URL is not indexed or unreachable
- Rate limiting or payment failure (x402) blocks the request
- Prompt-Guard firewall may flag and block queries containing injection-like patterns
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum number of items to return per page (1-100) |
| queryrequired | string | Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify |
| cursor | string | Opaque pagination cursor for fetching the next page |
Output
Schema · Response
{
"type": "object"
}Reviews
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