> This page is for version v3 (default).
> For other versions, use one of these documentation indexes:
> - v3 (default): https://help.getzep.com/v3/llms.txt
> - v2: https://help.getzep.com/v2/llms.txt

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

## Clearing edge timestamps and replacing attributes

Updating a graph edge with `graph.edge.update` now clears the `valid_at` and `invalid_at` timestamps when you set them to null, and attribute updates replace rather than merge — so an attribute set to null is removed. Cleared values are reflected in later searches.

Read the docs