Biome Tooling
Use when running, interpreting, or modifying Biome linting/formatting/import organization in this repo, including biome.json, Grit plugins, formatting fixes, and lint failures.
Install
$ agentstack add skill-theseus-run-theseus-biome-tooling ✓ 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-theseus-run-theseus-biome-tooling) 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
Biome Tooling
Use this skill for Biome formatting and linting.
Repo Facts
- Biome is configured locally; inspect
package.json/ lockfile for the installed version when version-specific behavior matters. - Root command:
bun run lint->bunx biome check. - Config:
biome.json. - Biome organizes imports through assist source actions.
- Custom Grit plugins block stale Effect v3 patterns and several local style hazards.
- For custom Grit plugin authoring or diagnostic-message design, use
biome-grit-rules.
Command Rules
- Use
bun run lintfor the repo check. - For a focused check, use
bunx biome checkonly after confirming no script already covers the need. - Use write mode only when the user asked for fixes or formatting is part of the task.
- Do not debate formatting output; accept Biome as the formatter.
- Do not use Prettier or ESLint unless the user explicitly asks.
Config Rules
- Read
biome.jsonbefore changing lint or formatting behavior. - Keep generated outputs, lockfiles,
node_modules,dist, and build artifacts excluded unless there is a deliberate reason. - Treat custom Grit plugin failures as repo policy, not generic style suggestions.
- If a rule is noisy, fix the code first; weaken config only when the rule is wrong for the repo.
- Repeated agent mistakes should become deterministic checks when the bad pattern is syntactically recognizable and low-noise.
Common Fix Strategy
- Run or inspect the focused Biome failure.
- Identify whether it is formatting, import organization, lint, or Grit plugin policy.
- Apply the smallest source fix.
- Re-run the focused check or
bun run lint.
Anti-Patterns
- Do not hand-format large files instead of running Biome when write mode is appropriate.
- Do not add inline ignores without a reason tied to runtime behavior or type-system limits.
- Do not change
biome.jsonto make one local warning disappear. - Do not edit
dist/just to satisfy Biome.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: theseus-run
- Source: theseus-run/theseus
- License: MIT
- Homepage: https://www.theseus.run
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.