API keys

Use Janus Studio from your code, CI and coding agents — the REST API and the MCP server. Keys spend this account’s credits.

API & MCP docs
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Quick start

Replace jns_live_YOUR_KEY with your key.

Run in your terminal, then ask Claude to generate sprites, music or a whole game.

Claude Code
claude mcp add --transport http janus https://janusengine.com/api/mcp \
  --header "Authorization: Bearer jns_live_YOUR_KEY"

Every endpoint, parameter and price is in the API & MCP reference. Agents can discover the tools themselves from /api/v1/catalog.