feat(api): update API spec from langfuse/langfuse 966662e

[langfuse-bot]

Important

This PR adds a CORRECTION score type and dataset versioning to the API, allowing correction feedback storage and temporal dataset queries.

• Behavior:
  • Adds CORRECTION score type to Score and GetScoresResponseData unions, allowing correction feedback storage.
  • Introduces dataset versioning with version parameter in DatasetManager.get() and DatasetItems.list() for temporal queries.
• Types:
  • Adds CorrectionScore interface in CorrectionScore.ts with value and stringValue properties.
  • Updates Score.ts and GetScoresResponseData.ts to include Correction variant.
• Client:
  • Updates Client.ts in datasetItems and datasetRunItems to support version parameter.
  • Adds datasetVersion field in CreateDatasetRunItemRequest.ts for specifying dataset version in runs.
• Tests:
  • Adds E2E test in datasets.e2e.test.ts to verify dataset versioning functionality.

^{This description was created by for 4d453cd. You can customize this summary. It will automatically update as commits are pushed.}

---

Disclaimer: Experimental PR review

Greptile Overview

Greptile Summary

This PR updates the API specification from the main Langfuse repository, introducing two key features:

1. Correction Score Type: Adds a new CORRECTION data type to the scoring system, allowing users to store correction feedback alongside numeric, categorical, and boolean scores. The CorrectionScore interface includes both a numeric value (always 0) and a stringValue for the correction content.

2. Dataset Versioning: Introduces temporal query support for datasets via an optional version parameter (ISO 8601 timestamp). Users can now:

• Retrieve dataset items as they existed at a specific point in time
• Pin experiment runs to specific dataset versions for reproducibility

All changes follow the existing code patterns and maintain backward compatibility through optional parameters. The code is auto-generated via Fern from the API definition.

Confidence Score: 5/5

• This PR is safe to merge with no issues detected
• All changes are auto-generated from API definitions using Fern, follow consistent patterns across the codebase, maintain backward compatibility with optional parameters, and correctly implement TypeScript discriminated unions
• No files require special attention

Important Files Changed

Filename	Overview
packages/core/src/api/api/resources/commons/types/CorrectionScore.ts	Added new CorrectionScore interface extending BaseScore with value and stringValue properties
packages/core/src/api/api/resources/commons/types/Score.ts	Added Correction variant to Score discriminated union with dataType: "CORRECTION"
packages/core/src/api/api/resources/datasetItems/client/Client.ts	Added version parameter to dataset items list endpoint for temporal queries
packages/core/src/api/api/resources/datasetRunItems/types/CreateDatasetRunItemRequest.ts	Added optional datasetVersion field for specifying dataset version in experiment runs
packages/core/src/api/api/resources/scoreV2/types/GetScoresResponseData.ts	Added Correction variant to GetScoresResponseData discriminated union

Sequence Diagram

sequenceDiagram
    participant Client
    participant DatasetItemsAPI
    participant DatasetRunItemsAPI
    participant ScoreV2API
    
    Note over Client,ScoreV2API: New Correction Score Support
    
    Client->>ScoreV2API: Request scores
    ScoreV2API-->>Client: Return scores (Numeric/Categorical/Boolean/Correction)
    
    Note over Client,DatasetItemsAPI: Dataset Versioning
    
    Client->>DatasetItemsAPI: Get dataset items (with version param)
    DatasetItemsAPI-->>Client: Return items at specified timestamp
    
    Client->>DatasetRunItemsAPI: Create dataset run item (with datasetVersion)
    DatasetRunItemsAPI-->>Client: Return run item with version snapshot

Loading

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
langfuse-js	Ready	Preview	Feb 5, 2026 9:04pm

[greptile-apps]

_{5 files reviewed, no comments}

_{Edit Code Review Agent Settings | Greptile}