# fs_read_file_range

Read a line range from a file (1-indexed, inclusive).

Agent View of the PolicyLayer registry record for `fs_read_file_range`. HTML page: https://policylayer.com/tools/yuga-hashimoto-localant/fs-read-file-range

## Facts

- Tool: `fs_read_file_range`
- Server: LocalAnt (`yuga-hashimoto/localant`) — https://policylayer.com/tools/yuga-hashimoto-localant.md
- Homepage: https://github.com/yuga-hashimoto/localant
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why fs_read_file_range is rated Low

This tool retrieves file contents within a specified line range. It performs a query operation on local files without modifying, deleting, or executing anything. The 1-indexed inclusive range specification confirms it is a read-only operation. Severity is low because reading file contents poses minimal risk even if misused by an AI agent—the worst case is information disclosure of data the user already has access to.

From the tool's own definition: "Tool name 'fs_read_file_range' and description 'Read a line range from a file' explicitly indicate data retrieval with no side effects."

## Use case

AI agents call fs_read_file_range to retrieve information from LocalAnt without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "fs_read_file_range": {}
  }
}
```

## Other tools on LocalAnt (215)

- `adb_clear_logcat` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/adb-clear-logcat.md
- `adb_uninstall` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/adb-uninstall.md
- `fs_delete_file_with_approval` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/fs-delete-file-with-approval.md
- `git_reset` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/git-reset.md
- `git_reset_hard` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/git-reset-hard.md
- `git_restore_file` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/git-restore-file.md
- `mcp_server_unregister` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/mcp-server-unregister.md
- `secret_remove` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/secret-remove.md
- `shell_remove_allowed_command` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/shell-remove-allowed-command.md
- `skill_uninstall` — Destructive — https://policylayer.com/tools/yuga-hashimoto-localant/skill-uninstall.md
- `adb_input_text` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-input-text.md
- `adb_install_apk` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-install-apk.md
- `adb_keyevent` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-keyevent.md
- `adb_shell` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-shell.md
- `adb_start_app` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-start-app.md
- `adb_stop_app` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-stop-app.md
- `adb_swipe` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-swipe.md
- `adb_tap` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/adb-tap.md
- `agent_run` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/agent-run.md
- `approval_approve` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/approval-approve.md
- `autopilot` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/autopilot.md
- `bash` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/bash.md
- `browser_click` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-click.md
- `browser_close` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-close.md
- `browser_evaluate` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-evaluate.md
- `browser_open` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-open.md
- `browser_press` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-press.md
- `browser_scroll` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-scroll.md
- `browser_select` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-select.md
- `browser_type` — Execute — https://policylayer.com/tools/yuga-hashimoto-localant/browser-type.md
- …and 185 more: https://policylayer.com/tools/yuga-hashimoto-localant.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`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=yuga-hashimoto-localant · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/yuga-hashimoto-localant