generated: '2026-07-21'
method: searched
source: https://s2.dev/docs/s2-lite + https://s2.dev/playground + https://s2.dev/docs/quickstart
free_tier:
  available: true
  limits:
    basins: 100
    retention_days: 28
  notes: Sign up at https://s2.dev/dashboard to issue scoped access tokens.
local_emulation:
  name: s2-lite
  docs: https://s2.dev/docs/s2-lite
  description: >-
    Local emulation / self-hosted single-binary S2 server. SDKs and the CLI
    point at it via endpoint overrides for local development and testing.
    Runnable through the CLI `s2 lite` command.
  testcontainers:
    crate: s2-testcontainers
    language: rust
    purpose: Integration testing against s2-lite.
playground:
  url: https://s2.dev/playground
  signup_required: false
  description: Browser playground to try S2 without signing up.
studio:
  url: https://s2.dev/docs/studio
  description: Browser UI (Studio) for reading and appending records.
test_values: null
notes: >-
  S2 does not publish "magic" test identifiers or test cards (not a payments
  API). Sandboxing is via the free tier, the no-signup playground, and the
  s2-lite local emulator with endpoint overrides.