The main guide for using the Metasploit Cursor Harness MCP server, which connects a coding agent to Metasploit security-testing operations. It explains engagement setup, scope checks, tool selection, and when to use the shell instead.

For setting up a Metasploit engagement, choosing MCP or shell workflows, checking scope and phase state, running gate checks, and managing the available testing operations.

It provides the required starting point for Metasploit work and keeps database queries, exploit actions, payloads, listeners, and sessions tied to the approved engagement rules.

How Suzu-Testing/metasploit-cursor-harness configures Cursor

Reuse

Borrowing it

Nothing to install: this file belongs to Suzu-Testing/metasploit-cursor-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Suzu-Testing/metasploit-cursor-harness/main/.cursor/skills/msf-harness/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/Suzu-Testing/metasploit-cursor-harness

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/msf-harness/github.svg)](https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/msf-harness)

Your own site

<a href="https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/msf-harness"><img src="https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/msf-harness/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/msf-harness"><img src="https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/msf-harness.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,672 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.02672
Opus 5.5	$0.00020	$0.01069
Sonnet 5.5	$0.00010	$0.00534
Haiku 4.5	$0.00005	$0.00267

Measured 1mo ago against content hash 6730b2ea15b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

msf-harness scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://127.0.0.1:55553/ 2>/dev/null || echo "RPC port check only"

.cursor/skills/msf-harness/SKILL.md · 313 lines

How it starts

The opening of the file, as written. The whole thing — 313 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Metasploit Cursor Harness

When to Use MCP vs Shell

Always use MCP for:

Module search and info (msf_search_modules, msf_module_info)
Database queries (hosts, services, vulns, creds, loot, notes)
Exploit execution (msf_run_exploit), auxiliary modules, post modules
Session management (list, command, terminate, upgrade)
Handler/listener management
Payload generation and workspace management

Fall back to shell only for:

Interactive msfconsole workflows with complex multi-step resource scripts
Operations not yet exposed in the MCP

Engagement Setup

Read .cursor/skills/pentest-workflow/SKILL.md and check phase state
Verify scope file exists: scope/scope-master.txt (one CIDR per line)
Create or select engagement: engagements/{engagement_id}/roe.yaml
Confirm engagements/{engagement_id}/phase-state.yaml exists
Run gate check: python .cursor/skills/pentest-workflow/scripts/gate-check.py {engagement_id}
Start WSL RPC if not running:

.\scripts\start-msfrpcd.ps1

LHOST Resolution (mandatory before reverse payloads)

Resolve LHOST deterministically. Try in this order; use the FIRST that succeeds:

msf_get_lab_network() -> use lhost field from response
Read engagements/{engagement_id}/lhost.yaml -> use lhost value
STOP and ask user for LHOST IP

NEVER hardcode an IP. NEVER use 0.0.0.0. NEVER guess.

Verify RPC connectivity

MSF MCP (preferred):

msf_status()

CLI fallback:

wsl -e bash -lc "msfconsole -x 'version; exit'"
curl -s http://127.0.0.1:55553/ 2>/dev/null || echo "RPC port check only"

Domain skills

Load the domain skill before improvising techniques. Router: pentest-knowledge-base.

Scope signal	Skill
Web application	`web-app-pentest`
Active Directory	`internal-ad-pentest`
Windows host	`windows-pentest`
Open port/service	`hacktricks-methodology`
Database access	`database-pentest`
AWS/Azure/cloud	`cloud-pentest`
Docker/K8s/CI-CD	`container-devops-pentest`
Mobile app	`mobile-pentest`
macOS host/session	`macos-pentest`
Linux host/session	`linux-pentest`
LLM/chatbot/MCP	`ai-llm-pentest`
Binary exploit (ROE)	`binary-exploit-pentest`
Cheatsheets/methodology	`methodology-cheatsheets`
MSF exploit chain	`msf-exploit-chain`
Post-ex MCP workflow	`msf-post`

Read the full file on GitHub · 313 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 313 lines · 51 tokens per session scan A 6730b2ea15b4

Subscribe to this mod's changes

msf-harness is a skill published in the GitHub repository Suzu-Testing/metasploit-cursor-harness (3 stars, last pushed 2mo ago), licensed MIT. It adds 51 tokens to every session and 2,672 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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metasploit-cursor-harness: Skill for Cursor