Humanloop was an LLM development platform for managing prompts, datasets, evaluations, and production observability of LLM applications, used by AI product teams at companies like Duolingo and Gusto. The platform offered a collaborative prompt editor, versioned prompts and tools, evaluation runs (LLM-as-judge and code-based), dataset management, online evaluators, and full request logging across OpenAI, Anthropic, Google, and other providers, with Python and TypeScript SDKs and a REST API. In 2025 the Humanloop team was acquired by Anthropic and the company has announced it is sunsetting the standalone platform; an official migration guide is published for existing customers. This record captures the historical API surface for archival and discovery purposes.
APIs.json: https://raw.githubusercontent.com/api-evangelist/humanloop/refs/heads/main/apis.yml
- Type: Index
- Position: Provider
- Access: 3rd-Party
- LLM Platform
- Prompt Management
- Evaluations
- LLM Ops
- Observability
- Datasets
- Prompts
- Tools
- Logs
- Multi-Provider
- Sunsetting
- Acquired
- Created: 2026-05-23
- Modified: 2026-05-23
The Humanloop REST API and SDKs covered prompts, tools, datasets, evaluations, evaluators, and logs for LLM applications. Developers called prompt endpoints from production to capture logs, ran evaluations against datasets, and managed versioned prompt configurations. The platform is being sunset following the team's acquisition by Anthropic in 2025.
- Human URL: https://humanloop.com/docs
- Base URL:
https://api.humanloop.com/v5
- Prompts
- Tools
- Datasets
- Evaluations
- Evaluators
- Logs
- Files
- Documentation
- API Reference
- SDK
- SDK
- GitHub Organization
- Migration Guide
- Sunset Announcement
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Website
- Documentation
- Blog
- GitHub Organization
- Migration Guide
- Media Kit
- Terms of Service
- Privacy Policy
- L L Ms Txt
FN: Kin Lane Email: kin@apievangelist.com