Leads Finder

I want to use the Leads Finder service on Fast Marketplace.

## Setup (skip if you already have Fast Marketplace set up)
1. Open the marketplace skill: https://marketplace.fast.xyz/skill.md
2. Fund a Fast wallet on mainnet.
3. Provide at least one people-targeting filter such as job title, then add geography or company filters.
4. Keep the returned job token and poll the marketplace job route for completion.

## Available Endpoints

### Find Leads ($0.0001 USDC)
curl -X POST "https://api.marketplace.fast.xyz/api/apify-leads/find-leads" \
  -H "Content-Type: application/json" \
  -d '{
  "fetch_count": 250,
  "seniority_level": [
    "Manager"
  ],
  "company_industry": [
    "SaaS"
  ],
  "contact_location": [
    "United States"
  ],
  "contact_job_title": [
    "Marketing Manager"
  ]
}'

Good for prospecting when you need broad filtered lead generation rather than enrichment of a known list.

For paid endpoints: the first call returns 402. Authorize payment with your Fast wallet and retry with the payment signature header.