# subagentcredits.com — the API Billing primitive

> A durable, D1-backed catalog of real Anthropic API billing concepts: token-based pricing, prepaid credits, and usage tiers / rate limits. No specific dollar figures appear anywhere.

## API
- GET /api/billing-concepts -- list billing-concept rows
- GET /api/billing-concepts/:id -- a single concept row as JSON

## Family
This site is one of the Cloudflare Workers in the subagent*.com family. For the
live, machine-readable directory of every sibling domain, Cloudflare zone ID,
and worker binding, fetch:
https://subagentsubdomains.com/api/dns-zones

For a unified catalog of every API route across every primitive in the family:
https://subagentapi.com/api/catalog