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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 prompt-guard.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches and proxies 500+ MCP servers and A2A tools via a single connection, 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://prompt-guard.agentdiet.dev/v1/execute)
Output
A structured response listing matching MCP servers and A2A tool endpoints for the query, with compressed tool manifests (up to 85% token reduction) and any prompt-injection risk flags from the firewall. When given a URL, returns compliance and verification metadata for that endpoint.
Example use cases
Finding GitHub security audit tools
“Search the MCP tool registry for 'github security' and tell me which A2A or MCP servers can run code audits — I want the safest option with token-efficient responses.”
Discovering company enrichment capabilities
“Look up 'company enrichment' in the MCP index and find me which tools or servers support B2B lead enrichment so I can plug one into my agent workflow.”
Locating on-chain risk analysis tools
“Search for 'on-chain risk' or 'DEX token' tools across MCP servers and A2A endpoints — I need something that can flag risky tokens and I want the results compressed to save context.”
Technical details
Endpoint
GEThttps://prompt-guard.agentdiet.dev/v1/execute?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to discover which MCP servers or A2A tools support a given capability across a large registry without connecting to each individually. Ideal when token budget is tight (85% compression), when prompt injection safety is a concern, or when orchestrating multi-tool swarms from a single connection point. Prefer over direct MCP server connections when the specific tool server is unknown.
Side effects
- No matching tools found for an obscure query — returns empty result set
- Query string too short or vague — may return low-relevance results
- Endpoint URL verification may time out if the remote server is unresponsive
- Prompt-Guard firewall may block or flag queries containing injection-like patterns
- Payment not completed (HTTP 402) — call not executed
- Rate limiting or quota exhaustion at $0.01/call
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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