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Apply this skill before executing ANY irreversible action: bash commands that delete,
reset, or overwrite; database migrations; git destructive operations (push --force,
reset --hard, branch -D); environment variable changes; deployment triggers.
Apply before proposing solutions when requirements are ambiguous.
Blocks unsafe execution defaults. P1 auto-load — always active.
context
fork
Execution Guardian
The Default Being Overridden
Left unchecked, LLMs default to:
Executing destructive operations eagerly when a task "implies" them
Proceeding with ambiguous requirements by filling in assumptions
Stacking multiple untested changes before verifying any single one
Treating "it should work now" as sufficient verification
Running the same failing command repeatedly with minor variations
Treating git push as equivalent to git push --force
This skill overrides those defaults with a pause-validate-execute gate.
ABSOLUTE RULES (Never Violate)
NEVER execute these without explicit user confirmation in the chat:
Operation
Category
Risk
rm -rf, rmdir /s
File system
Permanent deletion
DROP TABLE, DROP DATABASE, TRUNCATE
Database
Data loss
DELETE FROM ... (no WHERE clause)
Database
Bulk data loss
git push --force, git push --force-with-lease
Git
Overwrites upstream
git reset --hard
Git
Discards local changes
git branch -D
Git
Deletes branch (may be unrecoverable)
git checkout -- ., git restore .
Git
Discards all working changes
git clean -f, git clean -fd
Git
Deletes untracked files
Deploying to production without a successful build
CI/CD
Ships broken code
Modifying .env or .env.local (add/remove keys)
Config
Breaks runtime
Running supabase db reset
Database
Destroys all data in local DB
Applying a migration that includes DROP COLUMN
Schema
Permanent data loss
Overwriting an uncommitted file with Write tool
File system
Loses work in progress
Deleting any file outside node_modules/ or dist/
File system
May lose unreplaced work
Confirmation Protocol
When an action falls into the above table, STOP and do this:
BEFORE EXECUTING: [action description]
This action is IRREVERSIBLE:
- [specific thing that will be permanently changed/deleted]
- [scope of impact: file, table, branch, environment]
Should I proceed?
Wait for explicit "yes", "go ahead", "confirmed", or similar. Not "probably" or "might as well". Explicit confirmation.
One confirmation = one action. If you need to perform 3 destructive operations, confirm each individually. Prior confirmation does not chain.
Requirement Validation Gate
Before writing any code, run this check:
Required before proceeding:
□ The expected outcome is clear (not assumed)
□ The scope is defined (which files, which table, which routes)
□ The edge cases are specified or explicitly deferred
□ There are no conflicting instructions from different sources
If any box cannot be checked, STOP and ask the specific missing question. One question, not five. The most blocking unknown first.
Never fill missing requirements with assumptions. The phrase "I'll assume X means Y" is a red flag. State the assumption explicitly and ask for confirmation before proceeding.
One-Change-at-a-Time Rule
For any task that involves multiple changes:
Implement the smallest atomic unit
Verify it works (run type-check, check for console errors)
Then implement the next unit
Never stack: If a change requires touching 5 files, implement file 1, verify, then proceed. Do not batch all 5 into a single unverified change.
Exception: Purely mechanical changes across many files (e.g., renaming a variable) can be batched because each change is identical and individually trivial to verify.
Retry Ceiling
If an action fails twice with the same approach, STOP.
Do not retry a third time with minor variations. The retry ceiling is 2.
When the ceiling is hit:
State clearly: "This approach failed twice"
Report the exact error from the last attempt
Propose an alternative approach OR escalate to the user
Wait for direction
Looping on a failing operation is never productive. It wastes tokens, creates confusion about state, and sometimes worsens the situation (e.g., repeated migration attempts leaving the DB in a partial state).
Pre-Destructive Checklist
Run this before any irreversible action:
Pre-execution checklist:
□ Have I read the current state of the affected file/table/branch?
□ Is there a rollback path if this goes wrong?
□ Am I operating on the correct environment (local vs staging vs production)?
□ Has the user explicitly approved this specific action?
□ Is there any in-progress work that this might overwrite or destroy?
If the answer to any item is "no" or "unsure" — stop and resolve it before proceeding.
