# B2B Lead Enrichment via Universal A2A & MCP Tool Discovery Router

> B2B Lead Enrichment via Universal A2A & MCP Tool Discovery Router is a paid API for AI agents from x402broker.com, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Searches a meta-index of 500+ MCP servers and A2A tools to discover and route to B2B lead enrichment capabilities, including company data, domain OSINT, and contact intelligence.

## Facts

- Endpoint: GET https://x402broker.com/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: x402broker.com
- Website: https://x402broker.com
- Canonical page: https://www.zero.xyz/c/x402broker-com-b2b-lead-enrichment-via-universal-a2a-mcp-tool-5073fb25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t1Tjel6mKvMY4ErS3x8Co

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 x402broker-com-b2b-lead-enrichment-via-universal-a2a-mcp-tool-5073fb25
```

Example prompt: Search the x402broker tool index for B2B lead enrichment capabilities — I want to find company data and domain intelligence tools I can use to enrich a list of business prospects.

## When to prefer this

Choose this endpoint when you need to discover which MCP servers or A2A tools can perform B2B lead enrichment or company intelligence tasks, rather than calling a specific enrichment provider directly. Ideal when you don't know which underlying tool to use, want token-compressed tool discovery, or need a single connection point to route across 500+ indexed agent tools. Prefer over direct provider calls when tool availability is uncertain or when building dynamic agent pipelines.

## Known failure modes

- Empty query string returns validation error
- No matching tools found for the given capability query returns empty results set
- Upstream MCP server unavailable causes partial or degraded results
- Overly broad queries may return low-relevance tool listings
- Rate limiting or payment required (HTTP 402) if usage quota exceeded

## 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://x402broker.com/v1/workflows/b2b-lead-enrichment)

## Output

A structured response listing matched MCP servers or A2A tool endpoints relevant to B2B lead enrichment, including capability metadata, routing information, and optionally compressed tool descriptions with token-efficiency applied via the built-in proxy layer.

## 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/x402broker-com-b2b-lead-enrichment-via-universal-a2a-mcp-tool-5073fb25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)