# Cradle Platform API

**Canonical:** https://apis.io/apis/cradle-bio/cradle-platform-api/  
**Provider:** Cradle — https://apis.io/providers/cradle-bio/  
**Base URL:** https://app.cradle.bio/v2  
**Documentation:** https://docs.cradle.bio/api/

Cradle Platform API is published by [Cradle](https://apis.io/providers/cradle-bio/) on the [APIs.io](https://apis.io/) network. Tagged areas include Protein Engineering, Workspaces, Project, Rounds, and Data Management. The published artifact set on APIs.io includes API documentation and a getting-started guide.

The Cradle Platform API is an enterprise REST API for programmatic access to Cradle's AI-driven protein engineering platform. It is organized under per-workspace v2 endpoints and exposes resource groups for Workspaces, Projects, Rounds, Data Management, Tables, Data Loads (file upload/download with finalize, undo, and redo), Artifacts, Tasks, Audit Logs, and Custom Predictors. Task creation endpoints (analyze-data/v2, diversify/v2, engineer/v2, select/v2, search/v2, train/v2) drive Cradle's core generative protein workflows — sequence diversification, multi-property co-optimization, candidate selection, similarity search, and model fine-tuning — and return artifacts that can be inspected, pulled into custom pipelines, or chained into downstream lab automation. The API is paired with an official Python SDK (`cradle-sdk` on PyPI) and a Custom Predictor framework that lets customers register internally developed models against the same orchestration surface used by the Cradle web application. Access is enterprise-gated (no public self-serve tier); authentication and SSO are handled at the workspace level with SOC 2 controls, and the spec is rendered as ReDoc-based reference rather than published as a downloadable OpenAPI file.

## Machine-readable artifacts (7)

- **Documentation** — https://docs.cradle.bio/api/
- **GettingStarted** — https://docs.cradle.bio/docs/getting-started/overview/
- **SDKs** — https://docs.cradle.bio/sdk/cradle/sdk/
- **PythonSDKPackage** — https://pypi.org/project/cradle-sdk/
- **CustomPredictorTemplate** — https://github.com/cradlebio/custom-predictor-template
- **Login** — https://app.cradle.bio
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/cradle-bio/refs/heads/main/apis.yml

## Tags

Protein Engineering, Workspaces, Project, Rounds, Data Management, Tables, Data Loads, Artifacts, Task, Audit Logs, Custom Predictors

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