> For the complete documentation index, see [llms.txt](https://docs.tallygo.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tallygo.ai/context-graph-overview/graph-entities.md).

# Graph entities

| Entity           | Description                                                                                      |
| ---------------- | ------------------------------------------------------------------------------------------------ |
| Shipment         | Central entity representing a freight movement. All other entities connect to it.                |
| Identifier       | A reference number (HBL, booking, PO, invoice, container, etc.) that links to a shipment.        |
| Party            | An organization — carrier, forwarder, shipper, consignee, customs broker — with a specific role. |
| Contact          | An individual person associated with a party.                                                    |
| Leg              | A route segment (ocean, truck, rail, air) with origin, destination, and schedule.                |
| Container        | A physical shipping container with number, type, and seal.                                       |
| Commodity        | Goods being shipped, with HS codes, weight, and dimensions.                                      |
| Charge           | A financial line item with amount, currency, and billed-by/billed-to parties.                    |
| Event            | A milestone (booked, departed, arrived, cleared, delivered) with timestamp and status.           |
| Location         | A port, airport, city, or facility with UN/LOCODE.                                               |
| Email / Document | Source records that maintain full provenance for every entity in the graph.                      |


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