# 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).

Meta-router that searches and proxies 500+ MCP servers and A2A agent tools through a single connection, with token compression and prompt-injection firewall

## Facts

- Endpoint: POST https://polymarket-odds.agentdiet.dev/v1/bundle-execute?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-552522ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oJJiyEgCFXRG9AStFOcL4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability polymarket-odds-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-552522ec -d '<json body>'
```

Example prompt: Search your MCP and A2A tool index for anything that can do 'SEC filings' and route my request through the safe proxy with token compression enabled.

## When to prefer this

Choose this endpoint when an agent needs to discover which of 500+ MCP or A2A tools supports a given capability without managing separate connections to each server, or when you want prompt-injection protection and token compression applied uniformly across all downstream tool calls. It is especially useful for swarm architectures where multiple agents need a single safe routing layer.

## Known failure modes

- Empty or too-broad query returns no matching tools
- Downstream MCP server unavailable causing proxy timeout
- Prompt-Guard firewall blocks a legitimate query flagged as adversarial
- Payment not processed (x402) resulting in 402 response
- Malformed query (minLength not met) returns validation error
- Idempotency-Key collision if same UUID reused for different requests

## 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/bundle-execute)

## Output

Returns a ranked list of matching MCP servers or A2A tools with capability descriptions, endpoint URLs, and compressed metadata; if used as a proxy, returns the screened and token-compressed response from the downstream tool.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string",
   "minLength": 1,
   "description": "Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-552522ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)