Interactive API playground

Make a request. See what changes.

Change a document. Fork a branch. Retry an event. Explore the contracts that make connected data useful.

Simulation Browser simulation: not a running database, no network, no durability.

rural / sandbox proposed API

Sequence 0Records 2Fixture events 6

Request transact

Cmd or Ctrl + Enter to run

Response simulated

{
  "simulation": true,
  "status": "Ready. No request has run."
}

Deterministic. Memory-only.

Visible state branches, documents, events

Loading fixture…

Branches isolate documents. Analytics reads one shared synthetic event fixture.

Create a recordCreate requires an absent key. A failed batch changes nothing.
Enable JavaScript to edit and run this memory-only simulation.

Demo limits: 12 KiB request, 8 mutations, 16 documents per branch, 4 branches, 32 events. Safe-integer literals only; use strings for decimals and large integers.

More to play with

Two little worlds, one engine.

The living aquarium

A habitat that keeps its own records.

The real engine, compiled to WebAssembly, runs a living habitat. Open the Observatory to inspect its records.

Play the aquarium BEMBE

A tiny civilization in a record store.

Bembe talk, pray and petition a god, and their whole world lives in the RURAL engine as WebAssembly. Fork it, rewind it, watch it remember.

Enter BEMBE