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Checked fact 123612 Oct 2026Agents and apps

Anthropic's post describes a progress file and git commits as the way a new session learns the state of the work.

The exact words it rests on

The key insight here was finding a way for agents to quickly understand the state of work when starting with a fresh context window, which is accomplished with the claude-progress.txt file alongside the git history.

What the source said when we opened it, on 12 Oct 2026.

The source

Effective harnesses for long-running agents
Anthropic Engineering · 2025-11-26

Checked

Checked by the notis newsroom on , against the source above.

In the story

How an agent harness runs a model and enforces limits 12 Oct 2026

Cite this fact

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