pentest-mcp-extended

An MCP server that extends kali-mcp into three areas it doesn't cover: Cloud (AWS/Azure/GCP), API / GraphQL / JWT, and OSINT depth. Same architecture as kali-mcp — a Dockerized toolbox exposed over an HTTP MCP endpoint with an execute_command escape hatch plus typed, per-technique tools — so it drops straight into the same agent workflow and runs alongside kali-mcp.

Authorized use only. This is red-team / penetration-testing tooling. Use it exclusively against systems you own or have written permission to test (engagement scope, your own lab, or a CTF). Set PENTEST_SCOPE and keep it accurate — network-facing tools refuse out-of-scope targets. You are responsible for staying within your authorization and the law.

What it adds

Underlying tools: cloud_enum, ScoutSuite, Prowler, awscli · graphw00f, kiterunner, arjun, jwt_tool · theHarvester, amass, sherlock, holehe · Trivy, kube-bench, kube-hunter, docker-bench · Checkov, tfsec, gitleaks, trufflehog, Semgrep · apktool, jadx, mobsfscan · checksec, radare2, ROPgadget, pwntools.

File-based scanners (IaC, mobile, binary) read from /work — drop the target code/APK/binary into ./work on the host.

Related MCP server: Arsenal MCP

Architecture

Agent (Claude Code / Cursor / …)
        │  MCP over HTTP
        ▼
http://localhost:6667/mcp   ── FastMCP (streamable-http)
        │
        ▼
Kali container ── cloud / api / osint CLI tools

• app/common.py — shared FastMCP instance, command runner, scope guard.

• app/tools_cloud.py, tools_api.py, tools_osint.py — typed tool wrappers.

• app/server.py — registers modules, adds execute_command, serves MCP.

Quick start

cp .env.example .env       # set PENTEST_SCOPE to your engagement scope
docker compose up --build  # builds the toolbox, serves MCP on :6667

Register it with your agent (already provided in .mcp.json for Claude Code):

{ "mcpServers": { "pentest-extended": { "type": "http", "url": "http://localhost:6667/mcp" } } }

Then drive a session with the bundled commands:

/pentest-ext-audit acme-lab.com     # remote assessment: cloud / API / OSINT
/pentest-ext-artifacts              # static analysis of files dropped in ./work

Running natively on Kali (no Docker)

On a Kali host you can install every tool and run the server directly:

./setup-kali.sh          # install all tools (apt + pipx + release binaries)
./setup-kali.sh --run    # install, then start the MCP server on :6667

Then launch Claude Code in this directory — it auto-detects .mcp.json (localhost:6667). Docker (above) is still the most reproducible option; the script is the convenience path when you already live on Kali.

Starting the server by hand (not via setup-kali.sh --run)? Set a writable REPORTS_DIR, otherwise findings default to the absolute /reports and fail for a non-root user:

REPORTS_DIR=./reports python3 -m app.server

Smoke-testing the stack

Validate the whole thing in one command on the VM:

./test.sh --docker          # build + start Docker, then run all checks
./test.sh                    # server already running (Docker or native)
./test.sh --url http://VM-IP:6667/mcp   # test a remote endpoint

Three layers, no external target touched: (1) offline unit check of the CVSS 3.1

• remediation logic, (2) server reachability + tool inventory via list_capabilities, (3) a safe add_finding -> generate_report dry-run.

CI vs. host validation. GitHub CI validates our code — it compiles every module, runs the reporting unit tests, and builds a slim image (Dockerfile.ci, python-slim + our code) to smoke-test the live MCP server, tool registration and report pipeline. It deliberately does not build the full Kali toolchain image (Dockerfile) — that's too heavy for a free runner and is validated on your Kali host instead, where ./test.sh --docker and list_capabilities confirm all 35+ tools are present.

Auditing your own cloud accounts

scoutsuite_scan / prowler_scan use the container's ambient credentials. Mount them read-only (uncomment in docker-compose.yml) and point them at accounts you own:

volumes:
  - ${HOME}/.aws:/root/.aws:ro

Scope enforcement

Set PENTEST_SCOPE=acme-lab.com,10.10.0.0 in .env. Any network-facing tool called with a target outside the list returns a [scope-block] refusal instead of running. Empty scope = tools run but append an authorization reminder.

Notes & extending

• Add a tool: write a @mcp.tool() function in the relevant tools_*.py; it's auto-registered on import.

• Reports (ScoutSuite/Prowler HTML) land in ./reports.

• Out of scope by design: victim-facing phishing kits, malware distribution, and real-world detection-evasion payloads. Lab detection/evasion for purple-team exercises belongs in your kali-mcp knowledge base.