generated: '2026-07-20'
method: searched
source: https://docs.reactor.inc/quickstart, https://docs.reactor.inc/sdk-reference/using-the-sdk
note: >-
  Reactor does not publish payment-style test values. Its "sandbox" surface is a
  local development runtime and a scaffolding tool, captured below. No secret
  test credentials are published; API keys (rk_) are minted per account.
local_runtime:
  option: 'ReactorProvider prop `local: true` (or Reactor({ local: true }))'
  url: http://localhost:8080
  description: Connect the SDK to a locally running Reactor model runtime instead of the cloud API, for development without GPU cloud usage.
scaffold:
  command: npx create-reactor-app my-app --model=helios
  description: Bootstraps a complete runnable app (SDK + auth token exchange + selected model) for testing an integration end to end.
credentials:
  api_key_prefix: "rk_"
  token_mode: Short-lived session-scoped JWTs minted from POST /tokens (expires_after up to 6h) — safe to use for test sessions.