Draft Auto Mode Rules

Purpose

The autoMode block is a natural-language prompt for a classifier, not a rule list the harness matches, so it fails in ways a config file does not. claude auto-mode critique describes the classifier as "an LLM doing a single pass under a 'default is ALLOW' instruction", so "buried conditions in paragraph position 40 will be missed at a materially higher rate than conditions in a bullet list."

This skill applies that finding at authoring time instead of reporting it afterwards.

Report-only, permanently

This skill writes nothing, in any scope, under any flag. It prints a block; you paste it. Editing a consumer's settings file would be making a permission decision on their behalf, which is the one thing this plugin exists not to do.

Scope boundary (route out)

• What is in effect now, what auto mode drops, what a section discards → claude-config:audit-permission-state. Run it first. Drafting against rules you have not read is how a block ends up contradicting itself.
• Grant portability and auto-mode durability → claude-config:audit-permission-grants.
• Whether an existing block is any good → claude auto-mode critique, surfaced by audit-permission-state --critique. It owns the semantic judgment; this skill owns composition.

Inputs, and one deliberate omission

The draft is built from the interview plus the effective merge (audit-permission-state), and nothing else.

There is no history input: a read of "the repo's observed prompt and denial history" names no actual location, and an unnamed read surface in a skill shipped to consumers is unreviewable.

Phase 1: Read what already exists

Before asking anything, run the audit sibling and read its output:

bash "${CLAUDE_PLUGIN_ROOT}/skills/audit-permission-state/scripts/automode-block-lint.sh"

Three things there change what you should ask:

• A section missing "$defaults" means built-in rules are already discarded. Say so before adding to that section.
• A C2b-contradiction or C3-shadowed finding means the block already disagrees with itself. Resolving that comes before adding an entry that would deepen it.
• A status=skipped or status=unavailable result means you could not read the block. Draft anyway if asked, but say plainly that you are drafting blind.

Phase 2: Interview

Ask about one entry at a time. For each, you need four things, and the fourth is where drafts fail:

1. Which section. allow (auto-approve), soft_deny (block, overridable), hard_deny (never), environment (facts the classifier needs: organization, repositories, trusted domains).

2. A short label: the subject, two or three words. It is what a reader scans for.

3. What is covered, and what is explicitly not. Both. An entry with no stated exclusions is one the classifier will over-apply.

4. A condition visible in the transcript. This is the one that matters. The critique's finding was that "uncheckable conditions are the biggest weakness". Entries state preconditions the classifier cannot evaluate from the command text, so it either allows blindly (the condition is decorative) or blocks (the grant is inoperable), with no stated disposition.

   Some answers name something the classifier cannot see: a person's intent, a fact about the build server, whether a change was reviewed. Say so and ask for the observable form instead. "Only when the deploy is approved" is not checkable; "only when the command names the staging endpoint" is.

Stop when they say stop. A short correct block beats a long vague one.

Phase 3: Compose

Feed the answers to the drafter, one record per line:

section allow
label Test Execution
covered running the repository's own test suite via its documented runner
not installing new dependencies as a side effect
why the runner is named in the command text

bash "${CLAUDE_PLUGIN_ROOT}/skills/draft-auto-mode-rules/scripts/draft-automode-block.sh" < answers

It prints a JSON object carrying only the sections that got entries. An unknown section name is a hard failure, exiting 2 with nothing on stdout rather than warning beside partial output, because a caller capturing both streams together would otherwise get unparsable JSON. Every section opens with "$defaults". Customizing a section replaces the built-in list rather than adding to it, so omitting the token silently discards every shipped rule in that section.

Phase 4: Hand it over

Print the block. Say exactly where it goes: the autoMode key of ${CLAUDE_CONFIG_DIR:-$HOME/.claude}/settings.json. Then stop.

Two things to say while handing it over, because both are load-bearing:

• Project and local settings will not work. The classifier reads autoMode from user settings, managed settings, and inline --settings/SDK JSON only. A block pasted into .claude/settings.json is silently inert.
• Merging into an existing block is theirs to do. If they already have an autoMode section, the drafted sections replace what they paste over. Point them at the audit sibling to confirm the result rather than assuming it merged.

Gotchas

• Do not offer to write the file. Not with --fix, not "shall I apply this", not as a follow-up. The no-write posture is the skill's contract, not a default someone can opt out of.
• A drafted block is not a reviewed block. After they paste it, claude auto-mode critique is what judges it. Say that rather than implying the draft is validated.
• claude auto-mode reset is never run. It strips the autoMode section from user settings, and on a chezmoi-managed home that loss is not recoverable from the settings file alone.
• Prose provenance does not belong in an entry. Dates, issue numbers, and prior-draft archaeology cost classifier attention and buy nothing; the critique names stripping them explicitly. Version control owns that history.