# 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 workflows.agentdiet.dev, paid per call via MPP, $0.010000/call, status unknown (last checked 2026-10-30).

Searches and routes to 500+ MCP servers and A2A tools via a single meta-router connection with token compression and prompt safety filtering

## Facts

- Endpoint: POST https://workflows.agentdiet.dev/?utm_source=zero.xyz
- Price: $0.010000/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-c3d416ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZmbTU7SJPLhtisXR52soV

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 workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-c3d416ee -d '<json body>'
```

Example prompt: Search the MCP tool index for any agents or servers that handle 'SEC filings' and route me to the best match — I need something that can pull financial disclosures for a public company.

## When to prefer this

Choose this endpoint when you need to discover the right MCP server or A2A agent tool from a large index without maintaining multiple connections, especially when token budget is constrained (85% compression) or when you need a safety layer before proxying to external tools. Prefer it over direct MCP connections when you don't know which specific tool handles a capability and need a meta-search across 500+ indexed servers.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for niche capability query
- Prompt-Guard firewall blocks suspicious or injection-bearing queries
- Upstream MCP server unavailable or timed out
- Malformed endpoint URL when used in verification mode

## 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://workflows.agentdiet.dev/)

## Output

Returns a list of matching MCP servers or A2A tools relevant to the query, with compressed metadata (up to 85% token reduction), safety-filtered through Prompt-Guard firewall, and routing information to invoke the selected tool or endpoint.

## 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/workflows-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-c3d416ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)