The library

Every prompt, annotated

Real, published system prompts from shipping AI products — each with source attribution and notes on what makes it work.

2 prompts Sort

Claude for Chrome

agent prompt

Claude for Chrome — Browser Agent System Prompt

System prompt for Anthropic's Claude in Chrome browser-automation agent (Haiku 4.5). Its dominant theme is prompt-injection defense: it treats all fun…

role definition refusal policy constraint setting

161 7.5k 6.6k words

Claude for Chrome

tool schema

Claude for Chrome — Browser Tool Definitions (JSON)

JSON array defining the browser-automation toolset for Claude in Chrome. Includes a multi-action 'computer' tool (click/type/screenshot/scroll/zoom/ho…

tool-use protocol constraint setting output formatting

90 8k 2.6k words