Kaer API DocumentationOne key, four services

One base URL, one key, one prepaid balance.

Kaer API v1PricingStatusChangelog

What are you looking for?

Start—QuickstartAuthenticationKey security

Endpoints—ModelsChat completionsStreaming

Reference—Response headersErrorsRate limits and tiers

HomeQuickstartStart

export KAER_API_KEY="kaer_live_..."

curl https://api.kaer.ai/v1/chat/completions \
  -H "Authorization: Bearer $KAER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x1-kaer",
    "messages": [{"role": "user", "content": "Hello, world!"}]
  }'