API

Crowdin’s API is a full-featured RESTful API that helps you integrate localization into your development process. The endpoints we use allow you to easily make calls to retrieve information and perform necessary actions.

Most of the functionality of Crowdin is available through the API. It allows you to create projects for translations, add and update files, download translations, and much more. In this way, you can script the complex actions that your situation requires.

Crowdin API Reference File-based projects

Enterprise API Reference File-based projects

Crowdin API Reference String-based projects

Enterprise API Reference String-based projects

GraphQL API GraphQL API is a tool that allows you to retrieve exactly the data you need using more specific and flexible queries.

API Clients

The Crowdin API clients are lightweight, open-source interfaces developed for the Crowdin API. They offer common services for making API requests.

Official

Crowdin JavaScript client

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Official

Crowdin PHP client

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Official

Crowdin Java client

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Official

Crowdin Python client

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Official

Crowdin Ruby client

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Official

Crowdin .NET client

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Official

Crowdin Go client

View and Install

AI Agents and API

AI agents can integrate with Crowdin via the REST API or MCP (Model Context Protocol). AI-focused integration surfaces include LLM-friendly API specs (llms.txt) and MCP tool access to Crowdin capabilities.

API specs (llms.txt) LLM-friendly index of Crowdin API endpoints.

Crowdin MCP Server MCP tools that expose Crowdin operations to AI clients.

See Also

Language Codes A list of language codes used in Crowdin and Crowdin Enterprise.