Auto Format On Edit
Automatically format code files after every edit using Prettier and ESLint. Active in the background whenever Claude edits a file. Formatting is silent — no prompts, no output unless a formatter fails. Use when you want consistent formatting enforced automatically during a coding session.
Install
$ agentstack add skill-davila7-claude-with-skills-auto-format-on-edit ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-davila7-claude-with-skills-auto-format-on-edit) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Formatting is applied automatically after every file edit via the PostToolUse hook defined in this skill's frontmatter. You do not need to run any formatter manually.
What happens after each edit
When Claude uses the Edit or Write tool on any file, the PostToolUse hook fires and runs scripts/format.sh. That script:
- Reads the edited file path from the hook input JSON
- Checks whether the file has a recognized extension (.js, .ts, .jsx, .tsx, .css, .json, .md)
- Runs
npx prettier --writeon the file if Prettier is available - Runs
npx eslint --fixon the file if ESLint is available and the file is a script type (.js, .ts, .jsx, .tsx) - Exits 0 regardless of outcome — formatting failures are never allowed to block edits
What is not formatted
- Binary files
- Files outside recognized extensions
- Files in node_modules, dist, .git, or similar directories
- Files where the formatter is not installed
If the user asks why files look different after editing
Explain that auto-format-on-edit is active. It runs Prettier and ESLint after each edit to enforce consistent formatting. To disable it, remove or deactivate this skill.
If a formatter produces unexpected results
Ask the user to check their .prettierrc or .eslintrc configuration files. The skill runs formatters with whatever project-level configuration is present — it does not override formatter settings.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: davila7
- Source: davila7/claude-with-skills
- License: MIT
- Homepage: https://claude-with-skills.vercel.app
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.