API Reference

Replicante provides access to the system through an HTTP JSON API. This section provides details of this public interface.

The public API is still being designed as the system reaches maturity

Access to features through the public API is limited while features stabilise.


The API is versioned, with a single major version (i.e, v1, v2, …), so that breaking changes will have limited impacts on users.

Additional endpoints, additional response attributes, and bug fixes that do not remove attributes or change types are considered minor changes (the version is not changed).

Changes to attribute types, removal of response attributes, and removal of endpoints are considered breaking changes and the version is incremented.


API design is difficult and schemas are hard to get right the first time around. Incorrect design leads to poor performance, difficult use, and often additional complexity to maintain a sub-optimal solution. On the other hand continuous changes to an API makes it difficutl to build an ecosystem of tools and integrations.

In the hope of achieving a sensible balance, endpoints start their life under the /api/unstable “version” where they can change fast and break often. In semver terms all endpoints under /api/unstable are not part of the public API. Once enough iterations have passed and endpoints are stable for the foreseeable future they are promoted to the current stable version and become subject to breaking changes restrictions.

While the unstable API is subject to change, we do want to encourage early adopters to use such endpoints when possible and report issues (performance, usability, anything really!).

Only this way we can iterate over the API and improve it before it becomes stable.

API Configuration

By default, all supported API versions and unstable endpoints are made available when the system starts. For advanced users and setups, the configuration file also allows control over which endpoints are made available.

Endpoints that are provided by specific components, like the grafana integration, are only enabled it their component is as well.

On top of those options, additional “filters” can be applied to pick which sets of endpoints should be made available by replicante processes. These are configured as boolean options under the api.trees configuration section. Available options are:

  • introspect: disable all (stable and unstable) introspection API endpoints.
  • unstable: disable all unstable API endpoints.