Lichess Tablebase API
Lookup positions from the [Lichess tablebase server](https://lichess.org/blog/W3WeMyQAACQAdfAL/7-piece-syzygy-tablebases-are-complete).> [!important]> The hostname for these endpoints is `tablebase.lichess.org` and not `lichess.org`.
Lichess Tablebase API is one of 23 APIs that Lichess publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.
This API exposes 2 JSON Schema definitions.
Tagged areas include Tablebase. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an AsyncAPI specification, a JSON-LD context, and 2 JSON Schemas.
This API exposes 3 operations across 3 paths, and defines 2 schemas. It is described by OpenAPI 3.1.0, at version 2.0.144.
Requests are made against 4 base URLs: https://lichess.org, https://lichess.dev, http://localhost:{port}, http://l.org.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Lichess Tablebase API declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 23 scopes.
OAuth2— Read [the introduction for how to make authenticated requests](description/authentication).
Paths & Operations 3
Across 3 paths, the API surfaces 3 operations — 3 GET. Each is listed below with its method, path, parameters, and response codes.
Lookup positions from the [Lichess tablebase server](https://lichess.org/blog/W3WeMyQAACQAdfAL/7-piece-syzygy-tablebases-are-complete). [!important] The hostname for these endpoin…
Schemas 2
The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are TablebaseMove (15 properties), TablebaseJson (12 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Lichess 12
Other APIs Lichess publishes across the network.
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