# hooks_pre-command

Assess risk before executing a command Use when native Bash hooks (via Claude Code\

Agent View of the PolicyLayer registry record for `hooks_pre-command`. HTML page: https://policylayer.com/tools/io-github-ruvnet-claude-flow/hooks-pre-command

## Facts

- Tool: `hooks_pre-command`
- Server: Claude Flow (`claude-flow`) — https://policylayer.com/tools/io-github-ruvnet-claude-flow.md
- Install: `npx -y claude-flow`
- Homepage: https://github.com/ruvnet/claude-flow
- Risk category: Execute (High 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": "hooks_pre-command",
    "arguments": {}
  }
}
```

## Why hooks_pre-command is rated High

This tool sits in the command execution lifecycle, intercepting commands before they run via Bash hooks. While its stated purpose is risk assessment (a Read-like activity), it operates within an Execute context — hooking into command pipelines. Misuse or misconfiguration could suppress risk warnings, allow dangerous commands to proceed, or be abused to manipulate what commands are deemed safe.

From the tool's own definition: "'Assess risk before executing a command' and 'Bash hooks' — the tool is triggered in the execution pipeline of commands, acting as a pre-execution interceptor for Bash operations"

## Use case

AI agents invoke hooks_pre-command to trigger actions in Claude Flow. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "hooks_pre-command": {
      "limits": [
        {
          "counter": "hooks_pre-command_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Claude Flow (495)

- `agent_terminate` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agent-terminate.md
- `agentdb_batch` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agentdb-batch.md
- `agentdb_causal-edge-delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agentdb-causal-edge-delete.md
- `agentdb_causal-node-delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agentdb-causal-node-delete.md
- `agentdb_hierarchical-delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agentdb-hierarchical-delete.md
- `agenticow_rollback` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agenticow-rollback.md
- `autopilot_reset` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/autopilot-reset.md
- `config_reset` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/config-reset.md
- `federation_wg_keyrotate` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/federation-wg-keyrotate.md
- `hooks_codemod` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/hooks-codemod.md
- `hooks_intelligence-reset` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/hooks-intelligence-reset.md
- `hooks_worker-cancel` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/hooks-worker-cancel.md
- `iot_device_remove` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/iot-device-remove.md
- `iot_firmware_rollout_rollback` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/iot-firmware-rollout-rollback.md
- `iot_fleet_delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/iot-fleet-delete.md
- `iot_fleet_remove_device` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/iot-fleet-remove-device.md
- `managed_agent_terminate` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/managed-agent-terminate.md
- `memory_delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/memory-delete.md
- `policy_revoke` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/policy-revoke.md
- `ruvector_delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/ruvector-delete.md
- `session_delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/session-delete.md
- `system_reset` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/system-reset.md
- `task_cancel` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/task-cancel.md
- `teammate_cleanup` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/teammate-cleanup.md
- `wasm_agent_reset` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/wasm-agent-reset.md
- `wasm_gallery_remove_custom` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/wasm-gallery-remove-custom.md
- `workflow_cancel` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/workflow-cancel.md
- `workflow_delete` — Destructive — https://policylayer.com/tools/io-github-ruvnet-claude-flow/workflow-delete.md
- `agent_pool` — Execute — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agent-pool.md
- `agent_spawn` — Execute — https://policylayer.com/tools/io-github-ruvnet-claude-flow/agent-spawn.md
- …and 465 more: https://policylayer.com/tools/io-github-ruvnet-claude-flow.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-ruvnet-claude-flow · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-ruvnet-claude-flow