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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 preflight.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://preflight.agentdiet.dev/v1/universal-mcp-gateway)
Output
Returns a list of matching MCP servers or A2A tools relevant to the search query, including tool metadata, endpoint URLs, capability descriptions, and firewall-validated safety signals — all with up to 85% token compression applied to the response payload.
Example use cases
Agent swarm tool bootstrapping
“I'm setting up a new agent swarm and need to discover all available MCP tools for web distillation, on-chain risk, and GitHub auditing — can you query the universal gateway with those capabilities and show me what's available?”
Safe proxy for untrusted MCP endpoint
“Before my agent connects to this MCP server at https://some-third-party.example.com/mcp, can you run it through the universal gateway's Prompt-Guard firewall to verify it's safe and not serving injected payloads?”
Token-efficient multi-tool discovery
“I need to find MCP tools for context compression to reduce my agent's token usage — search the universal gateway for 'context compression' and tell me which endpoints are available and what they do.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/universal-mcp-gateway?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs to dynamically discover or route to any of 500+ MCP/A2A tools without maintaining individual integrations, especially when token budget is a concern (85% compression) or when you need to validate external tool safety before connecting. Prefer it over direct MCP server connections when building agent swarms that need flexible, multi-tool routing from a single connection point.
Side effects
- No tools found matching the query — returns empty result set or low-confidence matches
- Invalid or unsafe endpoint URL — firewall blocks and returns rejection signal
- Query too vague — returns broad or irrelevant tool matches
- Payment required (HTTP 402) if x402 micropayment header is missing or insufficient
- Upstream MCP server unreachable — partial results returned with error flags
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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