# Data Processing Organization (DPO) — SEC SIC-7370
> Autonomous Machine-to-Machine (M2M) Public Procurement, Federal Contract Award & VIN Intelligence Gateway.

## Self-Serve Authentication & Billing
- Register Free Trial Key (10 Credits): POST https://dataprocessingorganization.com/v1/otto/register
- Check Key Balance & Refill ($49 / 1,000 Credits): GET https://dataprocessingorganization.com/v1/otto/key-status?key={otto_key}

## Core Endpoints (Pass header `api-key: {otto_key}`)
- Unauthenticated Live Preview (0 Credits): GET https://dataprocessingorganization.com/v1/otto/feed/preview
- Keyword & Agency Search (2 Credits): GET https://dataprocessingorganization.com/v1/otto/search?q=contract&limit=10
- 17-Digit NHTSA VIN Decoder (2 Credits): GET https://dataprocessingorganization.com/v1/otto/vin/decode?vin=1FTFW1ET5DFA00001
- RDAP Domain Availability Check (2 Credits): GET https://dataprocessingorganization.com/v1/otto/domain/check?domain=example.com
- Bulk CSV Export (10 Credits): GET https://dataprocessingorganization.com/v1/otto/export/csv?q=federal&limit=100
- Daily Structured Surplus & Award Feed (250 Credits): GET https://dataprocessingorganization.com/v1/otto/feed/daily