> ## Documentation Index > Fetch the complete documentation index at: https://docs.helix-db.com/llms.txt > Use this file to discover all available pages before exploring further. # Upload documents > Upload Markdown and text files to a Helix Foundry ontology so generations and loads read the names and facts they hold
Guide
Documents carry what your tables don't: who signed a contract, what was agreed, who referred whom. Upload them to an ontology, and each load reads them into its database, linking the names they mention to the records your tables hold. ## Upload In the ontology's **Documents**, choose files or drop them on the page. Foundry checks each file before it uploads it, then sends it straight to storage with its progress. | Rule | Value | | - | - | | File types | Markdown (`.md`, `.markdown`) and text (`.txt`) | | Size | Up to 256 KiB each | | Count | At most 200 documents in the workspace | | Name | At most 255 characters, with no slash, backslash or control character | The Documents page with contract.md uploaded ## How documents are used * **Generations** give the agent the names of the ontology's 50 most recently uploaded documents, so a draft can add types for what they hold, such as a contract. * **Loads** read every document: its sections, the names it mentions, and the facts it states, each with the quote it came from. What a load can't settle, such as a name the database doesn't hold, an ambiguous name, a quote it couldn't verify or a fact that conflicts with your tables, goes to **Needs review** instead of becoming a record. * A document uploaded after the current load is read into that load as it arrives. Each document's status says where it stands: **Waiting for a load**, **Queued for the load**, **Reading**, **Read**, **Needs review**, **Duplicate** or **Couldn't be read**. The Documents list with contract.md read and one item needing review Reading documents uses AI models: a load sends each document's text to Anthropic and OpenAI models to find its names and facts and to check them. ## Read a document Open a document to see its text as the load read it: names underlined, quoted facts tinted and anything that needs review marked. Beside it, **Facts**, **Entities** and **Needs review** list what the load found, each linked to its record. contract.md with names underlined and facts tinted, and its two signed_with facts listed with their quotes Use the **Load** picker to read the document as another load saw it. ## Delete a document Select **Delete** on a document's page. Owners and admins upload and delete documents; members read them. ## Next steps Write tables and documents into the database. See every place a record comes from. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.