Page history · claude-code

Modifying system promptsagent-sdk/modifying-system-prompts

Every read this site has made of the page, newest first. A date is when upstream edited the page, where upstream publishes that, and otherwise when the poller caught the edit; each row says which of the two it is.

Recorded changes17including the first read

Lines now574in the newest capture

Characters34,890in the newest capture

First seen 14 Aug 2026 04:31 UTC

Last changed 20 Oct 2026 18:37 UTC

Every recorded edit

17 edits since this site first read it

WhenTitle it carriedWhatLines

As it stands

Lines574
Characters34,890
Categoryagent-sdk
Pathagent-sdk/modifying-system-prompts

Read it upstream →

Sections it gained

## Context Claude Code adds outside the system prompt
### Reminders Claude Code adds to the conversation
### Turn off the context your agent replaces
### See what Claude received
#### Update Claude's instructions mid-session
#### Turn recording off while you iterate on wording
### Change the prompt of an existing session
#### Cache the static part of a custom prompt
# Modifying system prompts
## How system prompts work
### Decide on a starting point
## Customize agent behavior