# biome-format

Formats files with Biome (format --write) and returns a structured list of changed files.

Agent View of the PolicyLayer registry record for `biome-format`. HTML page: https://policylayer.com/tools/io-github-dave-london-pare-search/biome-format

## Facts

- Tool: `biome-format`
- Server: Search (`Dave-London/Pare`) — https://policylayer.com/tools/io-github-dave-london-pare-search.md
- Homepage: https://github.com/Dave-London/Pare
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "biome-format",
    "arguments": {}
  }
}
```

## Why biome-format is rated Medium

This tool modifies files by applying code formatting. While reversible (formatting can be undone by re-running or version control), it constitutes a Write operation as it alters file contents. Severity is medium because unintended formatting of critical code could affect application behavior or introduce unexpected changes, though the effects are generally reversible through version control.

From the tool's own definition: "Tool description states 'Formats files with Biome (format --write)' - the --write flag indicates files are modified in place. Returns 'a structured list of changed files' confirming side effects."

## Use case

AI agents use biome-format to create or update resources in Search, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Search environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Search:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "biome-format": {
      "limits": [
        {
          "counter": "biome-format_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Search (201)

- `branch` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/branch.md
- `clean` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/clean.md
- `package-clean` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/package-clean.md
- `remove` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/remove.md
- `reset` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/reset.md
- `secret-delete` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/secret-delete.md
- `stash` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/stash.md
- `tag` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/tag.md
- `variable-delete` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/variable-delete.md
- `workspace` — Destructive — https://policylayer.com/tools/io-github-dave-london-pare-search/workspace.md
- `add` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/add.md
- `add-package` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/add-package.md
- `ansible-galaxy` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/ansible-galaxy.md
- `ansible-playbook` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/ansible-playbook.md
- `api` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/api.md
- `apply` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/apply.md
- `audit` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/audit.md
- `bazel` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/bazel.md
- `biome-check` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/biome-check.md
- `bisect` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/bisect.md
- `black` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/black.md
- `build` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/build.md
- `bundle-exec` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/bundle-exec.md
- `bundle-install` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/bundle-install.md
- `check` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/check.md
- `checkout` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/checkout.md
- `cherry-pick` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/cherry-pick.md
- `clippy` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/clippy.md
- `cmake` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/cmake.md
- `compose-build` — Execute — https://policylayer.com/tools/io-github-dave-london-pare-search/compose-build.md
- …and 171 more: https://policylayer.com/tools/io-github-dave-london-pare-search.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-dave-london-pare-search · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-dave-london-pare-search