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GET
Python

Authorizations

X-Auth-Token
string
header
required

Project API key for sending traces and accessing project-scoped resources. Format: sk-lw-... (no underscore). Obtain one by creating a project via the Admin API or the LangWatch UI.

Path Parameters

version
integer
required
Required range: x >= 1
id
string
required

Response

Success

version
integer
required

The version number, counting from 1.

authorLabel
string | null
required

Which surface wrote the version: user, api, cli or langy. Null on the synthesized Created entry of a case saved before versions were recorded.

authorId
string | null
required

The user who saved the version. Null when the save came from an API key.

changeDescription
string | null
required
changedFields
string[]
required

The fields whose value this save changed.

createdAt
string
required

When the version was written, in ISO 8601.

isSynthesized
boolean
required

True on the Created entry a case saved before versions were recorded shows. It has no stored snapshot, so it cannot be read back.

schemaVersion
integer
required

The shape the snapshot was written in.

snapshot
object
required

The editable content of the case as this version saved it.

Last modified on August 26, 2026