# B2B Company, Tech Stack & Contact Lead Enrichment

> B2B Company, Tech Stack & Contact Lead Enrichment is a paid API for AI agents from hn-pulse.agentdiet.dev, paid per call via MPP, $0.02/call, status unknown (last checked 2026-10-21).

Returns verified emails, social links, 40+ tech stack signals, pricing tiers, and a company summary for a given domain

## Facts

- Endpoint: GET https://hn-pulse.agentdiet.dev/v1/firmographics?utm_source=zero.xyz
- Price: $0.02/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-b2b-company-tech-stack-contact-lead-enrichment-d90d8375
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_etewapQb5yGPOTMDcIVxm

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 hn-pulse-agentdiet-dev-b2b-company-tech-stack-contact-lead-enrichment-d90d8375
```

Example prompt: Can you pull up the full firmographic profile for notion.so — I need their verified contact emails, social links, and what's in their tech stack?

## When to prefer this

Use this endpoint when you need a single-call enrichment of a B2B company domain that combines contact discovery, tech stack profiling, and firmographic summary. Prefer it over generic WHOIS or LinkedIn scrapers when you need structured, multi-signal data (emails + socials + tech + pricing) in one response for GTM or research workflows.

## Known failure modes

- Unknown or invalid domain returns empty or error response
- Domain with no detectable web presence yields sparse results
- Rate limiting or payment failure via x402 returns 402 Payment Required
- Recently launched domains may have insufficient signal for tech stack detection
- Private/stealth companies may return minimal contact or firmographic data

## How this service works

Extracts verified emails, social links, 40+ tech stack signals, pricing tiers, and company summary for GTM & research agents. (Live x402 v2, IETF MPP & MCP endpoint at https://hn-pulse.agentdiet.dev/v1/firmographics)

## Output

A structured object containing verified email addresses, social media profile links, 40+ technology signals (identifying tools and platforms the company uses), pricing tier information, and a company summary — all derived from the provided domain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string",
   "minLength": 1,
   "description": "Company domain name or URL (e.g. stripe.com, linear.app) to enrich"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hn-pulse-agentdiet-dev-b2b-company-tech-stack-contact-lead-enrichment-d90d8375/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)