02 / API MANUAL / REV. 01

ONE ENDPOINT.
EVERY MODEL.

OpenAI-compatible by design. Change a route name, not your client architecture.

QUICKSTART

BUY
Add a prepaid token block.
ISSUE
Create a scoped API key.
ROUTE
Send a standard chat completion.

bash

curl https://api.fabus.fun/v1/chat/completions \
  -H "Authorization: Bearer fbs_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "fabus/auto",
    "messages": [{"role":"user","content":"Review this diff."}]
  }'

AVAILABLE ROUTES

fabus/auto×1

Auto through Fabus

NORMALIZED USAGE

Every response returns the underlying token count and its route coefficient. The ledger stays readable across providers.

json

{
  "choices": [{"message": {"role": "assistant", "content": "..."}}],
  "usage": {"input_tokens": 1840, "output_tokens": 620,
    "route_multiplier": 3, "charged_tokens": 7380}
}