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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 routes across 500+ MCP servers and A2A tools via a single connection, with token compression 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://prompt-guard.agentdiet.dev/v1/workflows/rag-context-sanitizer)
Output
A filtered, token-compressed list of matching MCP servers or A2A tools relevant to the search query, including capability metadata and endpoint references, passed through a Prompt-Guard firewall to remove injected or malicious content.
Example use cases
Finding a GitHub audit tool
“I need to find an MCP server or A2A tool that can audit GitHub repositories for security issues — search the swarm index for anything matching 'github security' and give me the best options.”
Discovering context compression tools
“Search the tool directory for anything that handles context compression or RAG sanitization — I want to reduce my token usage in my agent pipeline.”
Locating on-chain risk analysis capability
“Can you look up what MCP or A2A tools are available for on-chain risk analysis or DEX token intelligence in the agent swarm index?”
Technical details
Endpoint
GEThttps://prompt-guard.agentdiet.dev/v1/workflows/rag-context-sanitizer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to use for a given capability, rather than hard-coding tool routes. Especially useful for multi-agent swarms that need a single safe entry point to a broad tool ecosystem with token efficiency and prompt injection protection.
Side effects
- Empty results if the query is too niche or no matching tool is indexed
- Prompt injection blocked by firewall — query flagged as unsafe and rejected
- Service unavailable if the meta-router backend is down
- Payment required (HTTP 402) if x402 payment header is missing or invalid
- Malformed query returns validation error
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"