> This page is for version Dev.
> For other versions, use one of these documentation indexes:
> - Prod (default): https://docs.chrt.com/prod/llms.txt
> - Staging: https://docs.chrt.com/staging/llms.txt
> - Dev: https://docs.chrt.com/dev/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.chrt.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.chrt.com/_mcp/server.

# API Reference

> Browse chrt API schemas, request fields, responses, and examples for shipping, tracking, flights, organizations, and billing across Prod, Staging, and Dev.

Use this reference to browse the request fields, responses and HTTP examples for the API version selected in the header.

![Four steps for using the API Reference: choose an API version; choose an endpoint from the sidebar; read its HTTP method, path, request and response; check the server URL and the endpoint's requirements before using an example.](/_fern-files/chrt.docs.buildwithfern.com/25738c6ebed35b960de11303487d29c13bf62a6f62b2fb132ae290079b87b16f/assets/api-reference-overview-flow.svg)

*How to read the API Reference.*

## Choose a version and endpoint

Select **Prod**, **Staging** or **Dev** before choosing an endpoint from the sidebar. Each version has its own API schema and examples. Check the displayed server URL and the endpoint's requirements before using an example.

Open an endpoint to inspect its HTTP method, path, request and response. The sidebar groups endpoints by domain; this overview is the starting point for the API Reference tab.

## Find an endpoint by task

Use these starting points in the selected API version. Check each endpoint's authentication and authorization requirements before making a request.

* [Get organization information](/dev/api-reference/api-reference/orgs/get-info-v-1) to inspect the organization information returned by the authentication service.
* [Search flight connections](/dev/api-reference/api-reference/flights/search-connections-v-1) for cargo connections between two airports.
* [Add a task-group message](/dev/api-reference/api-reference/shipping/task-groups/add-message-v-1) to add an entry to a task group's message log.
* [Read cargo tracking data points](/dev/api-reference/api-reference/tracking/timeseries/cargo-by-driver/data-points-v-1) for sampled cargo data within a task group.

## Integration guidance

Review the [SDK guide](/dev/sd-ks/sdk) when choosing a package and environment. SDK versions and API versions need to be checked separately.

For the workflow behind an endpoint, start with the [documentation](/dev/welcome) and [setup guides](/dev/help/getting-started). Contact [support](/dev/support) with the selected environment, endpoint and a sanitized error when you need help. Do not include credentials or private payloads.