JavaScript, Python, Go, .NET and Rust public betas are available from their
standard package registries. The source repositories remain available for
review and reproducible builds.
Choose a client
Each client is available from its public repository for Sandbox integration.
The repository owns its source-install path, compatibility policy, release
checks and provenance.
Build from source
- JavaScript
- Python
- Go
- .NET
- Rust
Install public beta
- JavaScript
- Python
- Go
- .NET
- Rust
Make the first request
Write safely
All clients preserve the REST API’s write controls:- caller-owned idempotency keys for replay-safe writes;
- bounded retries only where the operation and key make retry safe;
- typed errors with HTTP status, stable error code and request identifier;
- integer minor units for money;
- no automatic exposure of raw response bodies in errors.
Command line
hey checks local configuration and makes
authenticated read requests against Sandbox projects.
Verify API compatibility
API definition
Inspect the versioned OpenAPI schemas, scopes, errors and Assurance Graph.
Proving Ground
Run API, financial-identity, bitemporal and adversarial conformance suites.

