Add lesson

Use when the user corrects the agent on something likely to recur, or says "remember this", "add a lesson", "don't do that again". Appends a structured entry to .claude/lessons.md so the mistake isn't repeated.From its SKILL.md

Install

npx -y skills add johngaynor/adlc --skill add-lesson

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

1 stars1 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.9 KB, as published. Nobody here has run it

Add a lesson

Close the self-improvement loop: capture a correction as a durable, structured lesson in .claude/lessons.md. See METHODOLOGY.md § Lessons loop.

Arguments

$ARGUMENTS (optional) — an explicit lesson to record. If absent, infer it from the correction in the conversation.

Workflow

Identify the lesson. From $ARGUMENTS or the recent correction, extract the generalizable rule — the class of mistake, not the one-off instance.
Sanity-check it's worth recording. Skip if it's ephemeral conversational context or a one-time detail. Record only durable rules that will apply again. If it's unclear whether it generalizes, ask.
Check for duplicates. Read .claude/lessons.md. If an existing entry covers the same ground, update it rather than adding a near-duplicate.

Write the entry in the standard format, with a short, specific title:

## <short, specific title>
**Context**: where/when this came up.
**Problem**: what went wrong.
**Rule**: the durable rule that prevents it next time.
**Applies to**: the paths or areas this governs.

Append to .claude/lessons.md (create it from ${CLAUDE_PLUGIN_ROOT}/templates/lessons.md.template, or with the header inline, if it doesn't exist).
Confirm what was recorded and where.

Boundaries

Never record secrets, credentials, or one-off conversational context.
Ask First only when it's genuinely unclear whether the correction generalizes.

Done when

A well-formed, non-duplicate entry exists in .claude/lessons.md and the user has seen it.