Developers / API

The gateway and API keys

A public HTTP API at api.projecthollow.com. Mint scoped keys in Studio settings, then call the OpenAI and Anthropic compatible endpoints or the rest of the gateway.

Full API reference

Keys

Scoped keys, from Studio settings

Base URL

All requests go to https://api.projecthollow.com.

Scoped keys

Create keys under Settings, Developer Keys. Each key carries the scopes you choose, so a key can do only what you grant it.

Expiry

A key can be given an expiry date, after which it stops working and must be replaced.

Compatible endpoints

Call it like OpenAI or Anthropic

The chat endpoints speak the OpenAI and Anthropic request and response shapes, so existing client libraries work by pointing them at this base URL with your Hollow key.

curl https://api.projecthollow.com/v1/chat/completions \
  -H "Authorization: Bearer hlw_sk_..." \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-6-luna","messages":[{"role":"user","content":"Hello"}]}'

The Anthropic compatible endpoint is POST /v1/messages.

Both /v1/chat/completions and /v1/messages are live. See the API reference for the full request and response shapes.