# grpc_call

A execute tool on the Kali Security MCP MCP server.

Agent View of the PolicyLayer registry record for `grpc_call`. HTML page: https://policylayer.com/tools/seac-25-kali-security-mcp/grpc-call

## Facts

- Tool: `grpc_call`
- Server: Kali Security MCP (`seac-25/kali-security-mcp`) — https://policylayer.com/tools/seac-25-kali-security-mcp.md
- Homepage: https://github.com/SeaC-25/Kali-Security-MCP
- 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": "grpc_call",
    "arguments": {}
  }
}
```

## Why grpc_call is rated High

A gRPC call executes a remote procedure on an external service, triggering operations whose effects depend on arguments. In a penetration testing context (Kali Security MCP), this could be used to probe or exploit gRPC endpoints. The most severe applicable category given the execution of external calls is Execute. Severity is high given the offensive security context of the server.

From the tool's own definition: "Tool name 'grpc_call' implies invoking a gRPC remote procedure call. Description is empty and uninformative, lowering confidence."

## Use case

AI agents invoke grpc_call to trigger actions in Kali Security MCP. 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 Kali Security MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "grpc_call": {
      "limits": [
        {
          "counter": "grpc_call_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Kali Security MCP (193)

- `adaptive_cmdi_test` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-cmdi-test.md
- `adaptive_create_execution_context` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-create-execution-context.md
- `adaptive_execute_strategy` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-execute-strategy.md
- `adaptive_intelligent_orchestration` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-intelligent-orchestration.md
- `adaptive_network_penetration` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-network-penetration.md
- `adaptive_sqli_test` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-sqli-test.md
- `adaptive_web_penetration` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-web-penetration.md
- `adaptive_xss_test` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/adaptive-xss-test.md
- `add_chain_step` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/add-chain-step.md
- `agent_run` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/agent-run.md
- `aircrack_attack` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/aircrack-attack.md
- `apt_comprehensive_attack` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/apt-comprehensive-attack.md
- `apt_network_penetration` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/apt-network-penetration.md
- `apt_web_application_attack` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/apt-web-application-attack.md
- `arp_scan` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/arp-scan.md
- `auth_bypass_test` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/auth-bypass-test.md
- `authorized_comprehensive_security_assessment` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-comprehensive-security-assessment.md
- `authorized_controlled_validation` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-controlled-validation.md
- `authorized_credential_assessment` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-credential-assessment.md
- `authorized_environment_review` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-environment-review.md
- `authorized_injection_verification` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-injection-verification.md
- `authorized_network_exposure_assessment` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-network-exposure-assessment.md
- `authorized_template_validation` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-template-validation.md
- `authorized_web_application_assessment` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/authorized-web-application-assessment.md
- `auto_reverse_analyze` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/auto-reverse-analyze.md
- `bandit_scan` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/bandit-scan.md
- `bettercap_attack` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/bettercap-attack.md
- `browser_click` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/browser-click.md
- `browser_close_session` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/browser-close-session.md
- `browser_execute_js` — Execute — https://policylayer.com/tools/seac-25-kali-security-mcp/browser-execute-js.md
- …and 163 more: https://policylayer.com/tools/seac-25-kali-security-mcp.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=seac-25-kali-security-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/seac-25-kali-security-mcp