# AgenticData B2B Contact List Builder

> AgenticData B2B Contact List Builder is a paid API for AI agents from api.agenticdata.host, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Build targeted B2B contact lists by filtering across 800M+ people and company records to return matching contacts with email and phone data.

## Facts

- Endpoint: POST https://api.agenticdata.host/v1/search/list-build
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenticdata-b2b-contact-list-builder-672c01ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aXomJ9VVZ1d8tPRPJaABM

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 agenticdata-b2b-contact-list-builder-672c01ae -d '<json body>'
```

Example prompt: Pull me a list of up to 50 VP-level sales contacts at SaaS companies with 200–500 employees in the US — I need their work emails and phone numbers for outbound prospecting.

## When to prefer this

Choose this endpoint when you need to build or filter a targeted list of B2B contacts from a large database (800M+ records) in real time. It is well-suited for outbound sales prospecting, ABM campaigns, and recruiting where you need emails, phone numbers, or LinkedIn profiles for people matching company and persona filters. Prefer it over point-enrichment endpoints when you need to discover new contacts rather than enrich known ones.

## Known failure modes

- Empty results array if filters are too narrow or no matching contacts exist
- Missing email or phone fields if data is not available for matched contacts
- Request rejected if required body fields (type, method, bodyType, body) are missing
- Payment failure if USDC balance is insufficient for the $0.05 per-call fee
- Timeout or degraded response if filter complexity exceeds processing thresholds

## How this service works

MCP + API access to 800M+ B2B contacts. People search, email and phone enrichment, LinkedIn lookups — sub-200ms. Start with 2,000 free matches.

## Output

A JSON object containing a total count of matching records and an array of contact results. Each result includes contact information such as name, email, phone number, LinkedIn URL, job title, and company details, up to the specified limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "default": 100
  },
  "contacts": {
   "type": "object"
  },
  "companies": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "total": 10,
  "results": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenticdata-b2b-contact-list-builder-672c01ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agenticdata.host](https://www.zero.xyz/host/api.agenticdata.host/llms.txt)