Developer API

Build with real-time sponsor data

Access 25,000+ sponsor records, market analytics, and live sponsorship activity through our REST API.

25,000+
Sponsor records
16+
REST endpoints
1,000
Requests / hour
Real-time
SSE streaming

Quick Start
Make your first API call in seconds.
Example: Search brands
# Search for sponsors by brand name

curl -H "X-API-Key: your_api_key" \
  "https://api.sponsorgap.com/v1/brands/search?q=Notion&deduplicate=true"

# Response
{
  "success": true,
  "data": [
    {
      "name": "Notion",
      "industry": "Software",
      "sponsorof": "The Hustle",
      "audience": 2500000,
      "contact_email": "partnerships@notion.so",
      "linkedin": "https://linkedin.com/company/notion"
    }
  ],
  "pagination": { "total": 12, "hasNext": true }
}

Live Endpoints
All endpoints require an API key via the X-API-Key header.
GET
/v1/historical
Full sponsor database with filtering by industry, category, audience size, and more. Supports pagination and deduplication.
GET
/v1/stream
Real-time Server-Sent Events stream of new sponsor discoveries as they happen. Up to 5 concurrent connections.
GET
/v1/brands/search
Fuzzy search across brand names, descriptions, and websites. Returns matched sponsors with contact info.
GET
/v1/industries
List all industries with sponsor counts. Use with /v1/industries/:industry/sponsors for drill-down.
GET
/v1/industries/:industry/sponsors
Get all sponsors in a specific industry. Supports deduplication and pagination.
GET
/v1/sponsors/trending
Most active sponsors in recent days, ranked by sponsorship frequency.
GET
/v1/audience/ranges
Sponsor distribution by audience size ranges for market sizing.
GET
/v1/analytics/market-overview
Comprehensive market insights including top industries, audience trends, and sponsorship volume.
GET
/v1/stats
Your API usage statistics, rate limit status, and account information.
GET
/v1/sponsors/prolific
Sponsors ranked by number of newsletters they sponsor. Filter by min_sponsorships count for workflow routing.
GET
/v1/sponsors/recent
Recently added sponsors with configurable lookback period. Supports deduplication and pagination.
GET
/v1/sponsors/by-publication/:name
All sponsors of a specific newsletter or publication. Great for competitive intelligence.
GET
/v1/sponsors/:id
Get a single sponsor by ID or slug with full details.
GET
/v1/categories
List all sponsor categories with counts. Use with /v1/categories/:category/sponsors for drill-down.
POST
/v1/export/csv
Export filtered sponsor data as CSV. Up to 5,000 rows with industry, category, and audience filters.
GET
/health
Server status and database connectivity check.

Built for Developers
Everything you need to integrate sponsor intelligence into your product.
Real-time Streaming
Get new sponsor discoveries the moment they happen via Server-Sent Events.
25k+ Sponsor Records
Comprehensive database with contact emails, LinkedIn profiles, audience data, and industry tags.
Secure API Keys
SHA-256 hashed keys with per-user rate limiting and usage tracking.
Deduplication
One flag to remove duplicate companies across publications and return unique entries.
Consistent JSON Responses
Every endpoint returns standardized JSON with pagination, timestamps, and request IDs.
Contact Data Included
Every sponsor record includes partnership emails and LinkedIn profiles for direct outreach.

Ready to integrate sponsor data?

Available on Growth plans and above. Generate your API key in the dashboard.

Get Started Free