Save your Claude context before it runs out

The problem

Long Claude sessions degrade. The model starts forgetting decisions you made an hour ago, and when the context window fills up, your progress is effectively gone. Most people just start a new chat and re-explain everything from memory. That re-explaining is where details get lost.

What I do instead

Before a session gets too long, I ask Claude to write a handoff note to its future self. Not a summary for me, a briefing for the next session.

Paste this at the end of a long session:

Write a handoff briefing for a fresh session of yourself.
Include: the goal, every decision we made and why, the current
state of the work, exact file paths and commands involved, and
the very next step. Write it so a new session can continue
without asking me anything.

Save the output to a file in your project, I use HANDOFF.md. Then open a fresh chat, paste it in, and continue like nothing happened.

Why this works

The model knows what mattered in the session better than your memory of it. Asking it to brief its future self forces it to surface the invisible context: the dead ends you already ruled out, the constraint you mentioned once, the naming decision from the start.

You can wrap this prompt as a Claude Code skill so it triggers with one command. The same trick works in the Claude app in any long chat.

Do this now

1. Open your longest running chat.
2. Paste the handoff prompt above.
3. Save the result as HANDOFF.md in your project.

Next time the context runs out, you lose nothing.