Business knowledge

Business knowledge stores the facts PostHog uses when it answers questions about your business. PostHog AI, Support, and the Business knowledge MCP tools all read the same sources.

Open Business knowledge and choose Add source.

Text

Paste a policy, an FAQ, or any other text, and give the source a name. Edit the source when the text changes.

URL

Paste a public URL and choose how PostHog should read it.

• Single page fetches that page.
• Sitemap.xml reads the sitemap at that URL, or /sitemap.xml on the same site, and indexes each listed page.
• Same-origin crawl indexes that page and other pages on the same site, staying under the page's path. A URL at the site root covers the whole site. Skip paths you do not want. Depth and max pages bound the crawl. The crawl follows robots.txt.

File

Upload a PDF, DOCX, Markdown, CSV, or plain text file. PostHog stores the text it reads from the file. It does not keep the original file. To change a file, delete the source and upload it again.

Auto-refresh

A URL source can refresh on a schedule: every hour, every 6 hours, every day, or every week. Manual only means PostHog fetches the source when you add it, and again when you refresh that row yourself.

Text and file sources do not refresh on a schedule.

Libraries

A library limits search to the sources and repositories you put in it. A source can be in more than one library, or in none. All searches every ready source. Unfiled shows sources that are in no library.

Deleting a library removes only that grouping. The sources, documents, and selected repositories stay.

Pass library_id to document search, repository search, and file read when you want one library. Leave it out to search the whole project.

Playground

The Playground tab asks a question against your sources and shows the answer. Use it to check that a source is found before you rely on it in Support or PostHog AI.

Content checks

PostHog checks each document before using it in an answer. A document marked unsafe is left out. A document is also left out until that check finishes. The source shows when it has unsafe content.

Learn from support

You can also let PostHog add reusable answers from resolved support tickets. See Learn from support.