Pebble — prompt linter

lint your prompts inline on claude.ai, chatgpt.com, and gemini.

pebble checks your prompts as you write them, right inside claude, chatgpt, and gemini. start typing a prompt and pebble tells you what's missing — no role, vague instructions, no clear output. each issue comes with a ready-to-use fix you can apply with one click. no copy-pasting, no switching tabs, no panels to open. it just shows up when something's off. built on prompt engineering frameworks from anthropic, openai, and google. free, no account required.