# 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 agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches an index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token compression and prompt-guard safety filtering.

## Facts

- Endpoint: GET https://agentdiet.dev/v1/mesh/dispatch?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b83379e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RPjKHNmZymc_6aCwz36wA

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 agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b83379e2
```

Example prompt: Search agentdiet's mesh router for tools that can handle SEC filings and company enrichment — I want to find the best MCP server or A2A endpoint available for those capabilities.

## When to prefer this

Choose this endpoint when you need to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hard-coding a specific tool. It is especially useful for agent orchestration layers that need to route requests at runtime, want prompt-safety filtering before delegation, or benefit from compressed tool manifests to reduce LLM context usage.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for an obscure or misspelled capability query
- External MCP server index may be stale if recently updated
- Token compression may lose nuance in edge-case tool descriptions
- URL verification of a non-compliant endpoint returns error or timeout

## 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://agentdiet.dev/v1/mesh/dispatch)

## Output

Returns a structured object listing matching MCP servers or A2A tool endpoints that satisfy the capability query, along with metadata such as tool descriptions, safety status from the Prompt-Guard firewall, and compressed tool manifests to reduce token overhead.

## 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/agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-b83379e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)