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

# Concepts

## Docs

- [Orders, Task Groups, Segments, and Stops](https://docs.chrt.com/dev/docs/concepts/orders.md): How chrt models a shipment — the order, the task groups (segments) it's composed of, the tasks (stops) inside each task group, and the cargo that flows through them.
- [Cargo Types](https://docs.chrt.com/dev/docs/concepts/cargo-types.md): The full enum of cargo types supported by chrt, what each one is for, and how cargo type drives courier qualification, handling, and rate-sheet matching.
- [Roles and Permissions](https://docs.chrt.com/dev/docs/concepts/roles.md): The four organization roles chrt uses — owner, admin, operator, and member — and the permission matrix for orders, billing, connections, rate sheets, and drivers. Plus how driver users fit in.
- [Connections](https://docs.chrt.com/dev/docs/concepts/connections.md): The directory, the connect handle, default rate sheets, and the difference between on-platform and off-platform partners on chrt.
- [Billing Primitives](https://docs.chrt.com/dev/docs/concepts/billing-primitives.md): How chrt models billing — payment vectors (SPP, PPP, PPD), rate sheets, line item groups, statements, and ledgers. The full lifecycle from work performed to invoice paid.
- [Tracking](https://docs.chrt.com/dev/docs/concepts/tracking.md): The tracking model on chrt — driver-based tracking on orders, standalone tracker sessions for independent devices, the milestone events emitted by each task action, how ETA is calculated, and public tracking links.