Documentation
API Documentation
40 REST APIs behind one key and one monthly credit balance. JSON over HTTPS, no SDK required.
Quick start
- 1 Get an API key. Sign up free and create a key on the API Keys page — 1,000 credits a month, no card.
- 2 Make your first call. Any HTTP client works — pass the key in the X-Api-Key header.
- 3 Track your usage. Credits, latency and errors per key on the Usage page.
curl https://api.apicodex.io/countries/v1/all \
-H "X-Api-Key: $APICODEX_KEY"Authentication
Every request carries your key in the X-Api-Key header. Keys start with acx_live_ and belong to your team — every key shares the team's plan and credit balance.
Keep keys server-side. A compromised key can be revoked instantly; revocation takes effect within minutes.
Credits & rate limits
Each call spends credits from one monthly balance: cheap lookups cost 1, heavyweight scrapes cost more. The exact cost of every endpoint is on the pricing page and in each API's reference below.
Requests per second is capped per plan. Over quota or over the rate limit, the gateway answers 429 until the billing period rolls over or you back off.
Errors
Failures are JSON with an error message and a conventional status code:
Reference
Every API, straight from the spec
Each reference is rendered live from its OpenAPI spec (/openapi/{api}.yaml) — parameters, responses and examples, always in sync with what the gateway serves.