# Scale REST API

**Canonical:** https://apis.io/apis/scale-ai/scale-rest-api/  
**Provider:** Scale AI — https://apis.io/providers/scale-ai/  
**Base URL:** https://api.scale.com  
**Documentation:** https://api-reference.scale.com

Scale REST API is one of 9 APIs that [Scale AI](https://apis.io/providers/scale-ai/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include REST API, Labeling, Task, and Batches. The published artifact set on APIs.io includes API documentation, an API reference, authentication docs, and a getting-started guide.

The Scale REST API is the unified programmatic surface for Scale's data engine. It is built on REST principles with resource-oriented URLs, form-encoded request bodies, JSON responses, and standard HTTP status codes. Endpoints cover tasks (create, retrieve, cancel, set metadata, manage tags and unique identifiers), batches (create, finalize, list, prioritize, retrieve status), projects (creation and management), specialized annotation tasks (image and video, sensor fusion, LiDAR, multi-stage tasks), data retrieval and downloads, taxonomy service management, and callbacks for async operations. The API is versioned (v1), supports live and sandbox modes, and operates on one object per request (no bulk updates).

## Machine-readable artifacts (6)

- **Documentation** — https://scale.com/docs/
- **APIReference** — https://api-reference.scale.com
- **Authentication** — https://api-reference.scale.com/docs/api-reference/authentication.md
- **GettingStarted** — https://api-reference.scale.com/docs/api-reference/introduction-to-scale-api.md
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/scale-ai/refs/heads/main/graphql/scale-ai-graphql.md
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/scale-ai/refs/heads/main/apis.yml

## Other Scale AI APIs (8)

- [Scale GenAI Data Engine](https://apis.io/apis/scale-ai/scale-genai-data-engine/)
- [Scale GenAI Platform](https://apis.io/apis/scale-ai/scale-genai-platform/)
- [Scale Automotive Data Engine](https://apis.io/apis/scale-ai/scale-automotive-data-engine/)
- [Scale Nucleus](https://apis.io/apis/scale-ai/scale-nucleus/)
- [Scale Donovan](https://apis.io/apis/scale-ai/scale-donovan/)
- [Scale AI Batches API](https://apis.io/apis/scale-ai/scale-ai-batches-api/)
- [Scale AI Projects API](https://apis.io/apis/scale-ai/scale-ai-projects-api/)
- [Scale AI Tasks API](https://apis.io/apis/scale-ai/scale-ai-tasks-api/)

## Tags

REST API, Labeling, Task, Batches

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/scale-ai/scale-rest-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/scale-ai/.