# Add context to a question

> Give later forecasts your own notes and files, and say how to use them.

Part of the Prolepsia docs: Forecasts.
Video: [Add context to a question](https://prolepsia.com/docs/videos/add-context.mp4), 1:00, with [captions](https://prolepsia.com/docs/videos/add-context.vtt).
This guide as a web page: https://prolepsia.com/docs/add-context

## Steps

1. Open the question and scroll to the Question section.
2. Choose More details, then Add AI context.
3. Write your note under Additional context for AI.
4. Under How should AI use this?, choose Consider this, Look into this, Assume this is true or Ignore this.
5. Choose Add context.
6. To add a file, choose it under Uploaded files and choose Upload file. Prolepsia prepares a summary of each file so the research can search it.

## Good to know

- Context applies to the next forecast you run. Each past forecast keeps the context it used.
- Files can be PDF, Word, spreadsheets (including older .xls), CSV, TSV, text, JSON or images, up to 150 MB each. One question can hold 10 files and 500 MB in all.
- Prolepsia reads the images inside PDF, Word and Excel files too. It shows a model up to 30 images from each file, made smaller first, so a chart in your report reaches the forecast.
- A spreadsheet or CSV with rows of data gets its own Data section on the question page, with a chart of its numbers. Choose Share as public data there to show the data and the forecasts that use it to everyone who can see the question.

## What the video says

You often know things a web search cannot find. Add them to a question as context, and every later forecast reads them. In the Question section, open More details, then choose Add AI context. Write a note in plain words. Then tell the AI how to use it. Consider this weighs the note as evidence. Look into this asks the research to check it. Assume this is true takes it as a fact. Choose Add context to save it. You can also upload files: PDF, Word, spreadsheets, CSV, text, JSON or images, up to 150 megabytes each. Prolepsia reads the text and the images inside each file, so the research can search it. A spreadsheet or CSV with rows of data also gets a Data section on the question page, with a chart of its numbers. Context applies to the next forecast you run. Past forecasts keep the context they used, so you can always see what each one knew.

Every Prolepsia page for AI agents is listed at https://prolepsia.com/llms.txt.