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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 polymarket-odds.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
Searches a meta-index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results through a Prompt-Guard 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://polymarket-odds.agentdiet.dev/v1/tool-broker)
Output
Returns a list of matching MCP servers or A2A tools ranked by relevance to the query, with 85% token-compressed capability descriptions, safety scores from the Prompt-Guard firewall, and metadata needed to connect or invoke each tool.
Example use cases
Agent swarm tool bootstrapping
“I'm building a multi-agent swarm and need to quickly find which MCP servers cover context compression and GitHub security audits — can you search the tool index and give me the best matches?”
Safe proxy for unknown MCP endpoint
“Before my agent connects to this MCP endpoint at https://some-tool.example.com, can you verify it through the tool broker so I know it's safe and get a summary of what it does?”
Capability gap discovery for automation pipeline
“My automation pipeline needs a tool for B2B lead enrichment — search the MCP and A2A index for anything that can do company data enrichment or domain OSINT and list the top options.”
Technical details
Endpoint
POSThttps://polymarket-odds.agentdiet.dev/v1/tool-broker?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to dynamically discover the right MCP server or A2A tool for a capability it doesn't already have a direct connection to, especially when operating in a multi-tool swarm context or when safety firewall filtering of third-party tools is required. Prefer this over maintaining a static tool list when the ecosystem is large or frequently changing.
Side effects
- Empty query string returns validation error (minLength:1 required)
- Query matches no indexed tools — returns empty results set
- Endpoint URL verification fails if the target is unreachable or not a recognized MCP/A2A server
- Rate limiting or payment failure (HTTP 402) if x402 payment is not supplied
- Firewall blocks result if Prompt-Guard detects prompt injection in tool metadata
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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