# Never Twice dont let the AI agent do mistake again > Source: > Published: 2026-11-13 13:23:39+00:00 ### Install ``` openclaw skills install @cognicore-dev/never-twice ``` Self-improving agent that never repeats a mistake. Learns from every correction and failure, remembers why, and checks only the relevant lessons before acting. Local-first, open source. You learn from mistakes and never repeat them. Lessons are stored by the `cognicore` command and checked before you act. Check lessons before any task that changes something: installing or removing packages, editing code or config, running tests or builds, running migrations, committing, pushing or deploying. Skip the check for questions, explanations and reading files. Run: Describe the kind of action in general words as well as the specifics, for example `"install a package: add axios"` or `"format dates in the invoice export"`. Lessons are matched by words. If it prints lessons, follow them, and tell the user in one short line which lesson you applied, for example: "Using pnpm (lesson: npm breaks this repo's lockfile)." If it prints nothing, carry on; there is nothing to apply. If a lesson clearly doesn't apply to this task, ignore it and don't mention it. `--why`. One lesson per mistake, each field one sentence.`--when` names the situation broadly ("installing or adding packages", "writing dates"), so the lesson is found next time even when the task is worded differently.`--scope global` only for lessons that apply in every project; the default is this project. Lessons are stored locally in the CogniCore data folder (`~/.cognicore/mcp/lessons.db`). Nothing leaves this machine. Users can review lessons with `cognicore lesson list` and delete one with `cognicore lesson forget `.