# B2B Lead Enrichment via A2A & MCP Tool Discovery Router

> B2B Lead Enrichment via A2A & MCP Tool Discovery Router is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches and routes across 500+ indexed MCP servers and A2A tools to find matching capabilities for a given query, specifically surfaced through the B2B lead enrichment workflow endpoint.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/workflows/b2b-lead-enrichment?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-b2b-lead-enrichment-via-a2a-mcp-tool-a36e3bfa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XpoUyqHxX0LoUGeb5CqDv

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 alpha-stream-agentdiet-dev-b2b-lead-enrichment-via-a2a-mcp-tool-a36e3bfa
```

Example prompt: Search the MCP and A2A tool index for 'company enrichment' capabilities so I can find the right tool to fill in missing B2B lead data like company size, industry, and revenue.

## When to prefer this

Choose this endpoint when you need to discover B2B lead enrichment tools or any MCP/A2A capability from a large indexed catalog in a single connection, especially when token efficiency matters. Prefer it over manual MCP registry browsing or hardcoding specific enrichment APIs — it acts as a meta-router so your agent can dynamically find the right tool rather than knowing it in advance.

## Known failure modes

- Empty or overly broad query returns irrelevant or no matches
- Query does not match any indexed tool — returns empty results
- Payment not processed (HTTP 402) — endpoint requires $0.01 USDC per call via x402
- Malformed query (missing required 'query' parameter) returns validation error
- Tool index may be stale if newly added MCP servers have not yet been indexed

## 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://alpha-stream.agentdiet.dev/v1/workflows/b2b-lead-enrichment)

## Output

Returns a structured list of matching MCP servers, A2A tools, or capability descriptors relevant to the search query, with metadata compressed for token efficiency and filtered through a Prompt-Guard firewall for safety.

## 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/alpha-stream-agentdiet-dev-b2b-lead-enrichment-via-a2a-mcp-tool-a36e3bfa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)