Nmap Recon
CommonHuman-Lab/nyxstrike
Network reconnaissance workflow using nmap, masscan, and rustscan via NyxStrike tools
Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up.
Install Operate Network Recon
$ npx skills add cyberful/cyberful --skill operate-network-recon -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cyberful/cyberful operate-network-recon --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .claude/skills/operate-network-recon && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .claude/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-reconType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add cyberful/cyberful --skill operate-network-recon -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cyberful/cyberful operate-network-recon --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .agents/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .agents/skills/operate-network-recon && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .agents/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cyberful/cyberful --skill operate-network-recon -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cyberful/cyberful operate-network-recon --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .cursor/skills/operate-network-recon && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .cursor/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/cyberful/cyberful.git --path cyberful/builtin/skills/operate-network-recon--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add cyberful/cyberful --skill operate-network-recon -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cyberful/cyberful operate-network-recon --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .gemini/skills/operate-network-recon && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .gemini/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install cyberful/cyberful operate-network-reconInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add cyberful/cyberful --skill operate-network-recon -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .github/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .github/skills/operate-network-recon && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .github/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cyberful/cyberful --skill operate-network-recon -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cyberful/cyberful operate-network-recon --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cyberful/cyberful.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/cyberful/builtin/skills/operate-network-recon .opencode/skills/operate-network-recon && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "operate-network-recon" agent skill from https://github.com/cyberful/cyberful/tree/main/cyberful/builtin/skills/operate-network-recon into .opencode/skills/operate-network-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "operate-network-recon", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
operate-network-recon- GitHub stars
- 135
- Token cost
- ~1.1k tokens
- SKILL.md length
- 437 words
- Files
- 9 (incl. scripts, references, assets)
- Skills in repo
- 85
- Repo updated
- First seen
- Licence
- AGPL-3.0
At a glance
Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up.
- Works in 7 steps: Route and name: DNS records, reverse… → Reachability: multiple host discovery… → Port inventory: full or justified range… → …
- Authorized external
- SKILL.md covers Establish the scan contract, Layer discovery, Use Nmap output as evidence and Reconcile scanners, plus 2 more sections
- Runs Python scripts from its folder
What it does
Operate Network Recon is an agent skill from cyberful/cyberful. Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up. Use for authorized external or internal reconnaissance, service fingerprinting, exposure validation, segmentation checks, UDP discovery, TLS/SNI routing, scan reconciliation, or when an existing port list may be incomplete or misleading.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including scripts, reference files and assets (for example `agents/openai.yaml`, `assets/network-recon-campaign.example.json` and `assets/network-recon-campaign.schema.json`).
It sits in Security, covering Penetration testing, Bug bounty and Accounting and bookkeeping. It works with Nmap. The repository describes itself as: Cyberful is an open-source AI Red Team for discovering, exploiting, verifying, and remediating vulnerabilities. The licence is AGPL-3.0.
When your agent uses it
- Authorized external
- Internal reconnaissance
- Service fingerprinting
- Exposure validation
Example prompts
- “/operate-network-recon”
Requirements
- Python 3
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Route and name: DNS records, reverse DNS, ASN/network ownership, local routes, proxy/VPN path.
- Reachability: multiple host discovery probes or -Pn when filtering makes ICMP conclusions unreliable.
- Port inventory: full or justified range with explicit timing/rate.
- Service identity: targeted -sV on discovered ports with adequate version intensity.
- Protocol confirmation: native client or NSE script selected for that protocol.
- Application routing: SNI, Host, protocol upgrade, realm, tenant, or virtual-service distinctions.
- Security checks: narrow scripts or manual probes driven by confirmed service features.
What it can do on your machine
Read from SKILL.md and the folder at commit ec598a6. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Operate Network Recon loads about 1.1k tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 97 tokens; SKILL.md has 437 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from cyberful/cyberful at commit ec598a6, republished under its AGPL-3.0 licence (© cyberful). 437 words, ~1,139 tokens.
Download SKILL.mdSave it as
.claude/skills/operate-network-recon/SKILL.md (or your agent's skills folder). This skill also uses 8 other files; get the full folder from GitHub.- name
- operate-network-recon
- description
- Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up. Use for authorized external or internal reconnaissance, service fingerprinting, exposure validation, segmentation checks, UDP discovery, TLS/SNI routing, scan reconciliation, or when an existing port list may be incomplete or misleading.
- metadata.domain
- security-tooling
- metadata.subdomain
- network-reconnaissance
- metadata.triggers
- authorized network reconnaissance, network service inventory, Nmap campaign, service fingerprinting, port exposure validation
- metadata.tags
- Nmap, network-recon, service-discovery, port-scanning, DNS, packet-capture
Operate Network Recon
Separate host reachability, port state, service identity, application identity, and vulnerability hypotheses. Each requires different evidence.
Establish the scan contract
Record target set, exclusions, vantage point, address family, DNS resolution time, allowed rates, maintenance constraints, credential availability, expected intermediaries, and whether UDP or non-default protocols are required.
Create a target ledger before scanning. Expand CIDRs and hostnames deliberately; preserve original hostname-to-address mappings and do not silently merge multiple virtual services behind one IP.
Layer discovery
- Route and name: DNS records, reverse DNS, ASN/network ownership, local routes, proxy/VPN path.
- Reachability: multiple host discovery probes or -Pn when filtering makes ICMP conclusions unreliable.
- Port inventory: full or justified range with explicit timing/rate.
- Service identity: targeted -sV on discovered ports with adequate version intensity.
- Protocol confirmation: native client or NSE script selected for that protocol.
- Application routing: SNI, Host, protocol upgrade, realm, tenant, or virtual-service distinctions.
- Security checks: narrow scripts or manual probes driven by confirmed service features.
Read references/service-fingerprint-fieldbook.md for false-negative and cross-protocol heuristics.
Use Nmap output as evidence
Always persist normal, XML, and grepable outputs when practical. Include exact target input, command, Nmap version, timestamps, elapsed time, and scan conditions. Prefer XML for machine correlation.
Treat states precisely:
- open: a service accepted/responded;
- closed: target reachable and rejected at that instant;
- filtered: probes lacked a decisive response;
- open|filtered: common UDP ambiguity;
- unfiltered: reachable but open/closed unresolved.
Do not translate filtered into closed or host down.
Show full SKILL.md (194 more words)Show less
Reconcile scanners
Masscan is a fast candidate generator; Nmap and protocol clients are validators. Differences can arise from rate, retries, source port, SYN proxying, load balancing, ephemeral services, tarpits, anycast, or per-source policy.
For every material discrepancy:
- rescan serially from the same vantage;
- capture packets if possible;
- vary only one transport assumption;
- validate with the native protocol;
- timestamp the conclusion.
For a repeatable active campaign, stage scripts/run_network_recon_campaign.py, scripts/manifest.json, and the campaign example. Fill the explicit authority contract before execution. The orchestrator constructs fixed Nmap argv, rejects hosts or ports outside that contract, enforces request and timeout bounds, and preserves raw stdout/stderr under the evidence schema. It does not classify a service or vulnerability.
Select scripts narrowly
Choose NSE categories/scripts from a concrete hypothesis. Inspect script arguments and source for authentication, broadcast behavior, brute force, intrusive actions, or dependency assumptions. Prefer explicit script names over broad categories, and preserve script output separately from version detection.
Handoff
Produce:
- live/unknown host ledger;
- port/service/application matrix;
- hostname/SNI/vhost mappings;
- protocol features and authentication surfaces;
- conflicting or unstable observations;
- coverage gaps by address family, transport, port range, and vantage;
- prioritized hypotheses with the exact next discriminator.
© cyberful, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 8 other files (scripts, references, assets) in cyberful/builtin/skills/operate-network-recon of cyberful/cyberful.
- SKILL.md
- agents/openai.yaml
- assets/network-recon-campaign.example.json
- assets/network-recon-campaign.schema.json
- assets/network-recon-evidence.schema.json
- references/service-fingerprint-fieldbook.md
- scripts/manifest.json
- scripts/run_network_recon_campaign.py
- tests/test_run_network_recon_campaign.py
Open the folder on GitHubat commit ec598a6
Compare with similar skills
Operate Network Recon next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Operate Network Recon this skillcyberful/cyberful | 135 | — | ~1.1k | Automated safety check: Pass | AGPL-3.0 | |
| Nmap ReconCommonHuman-Lab/nyxstrike | 157 | — | ~639 | Automated safety check: Pass | Custom licence | |
| Add Partial Reconsamugit83/redamon | 3k | — | ~1.1k | Automated safety check: Pass | MIT | |
| NmapBrownFineSecurity/iothackbot | 859 | 1 repos | ~3.8k | Automated safety check: Notes | MIT | |
| Systematic Attackingmtarcure/claude-vibe-squad | 165 | — | ~3.6k | Automated safety check: Pass | MIT | |
| Project Settings Cascadesamugit83/redamon | 3k | — | ~2.4k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Operate Network Recon
What does Operate Network Recon do?
Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up. Operate Network Recon is an agent skill from cyberful/cyberful. Build a high-fidelity network and service inventory using Nmap, Masscan, packet capture, DNS, and protocol-specific follow-up.
When should I use Operate Network Recon?
Operate Network Recon fits situations like: authorized external; internal reconnaissance; service fingerprinting; exposure validation.
How do I install Operate Network Recon in Claude Code?
Run `npx skills add cyberful/cyberful --skill operate-network-recon -a claude-code`. Or copy the skill folder (cyberful/builtin/skills/operate-network-recon in cyberful/cyberful) into .claude/skills/operate-network-recon in your project. Claude Code loads it when a task matches its description.
How do I install Operate Network Recon in Codex?
Run `npx skills add cyberful/cyberful --skill operate-network-recon -a codex`. Or copy the skill folder (cyberful/builtin/skills/operate-network-recon in cyberful/cyberful) into .agents/skills/operate-network-recon in your project. Codex loads it when a task matches its description.
Can I use Operate Network Recon in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add cyberful/cyberful --skill operate-network-recon -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/operate-network-recon, .gemini/skills/operate-network-recon, .github/skills/operate-network-recon and .opencode/skills/operate-network-recon in your project.
What does Operate Network Recon need to run?
Going by SKILL.md and its folder, Operate Network Recon needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Operate Network Recon access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Operate Network Recon safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Operate Network Recon use?
Operate Network Recon is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Operate Network Recon use?
About 1.1k tokens (SKILL.md is roughly 4.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 874 tokens, read only when the agent opens those files.
What are the alternatives to Operate Network Recon?
Skills that share tags, products or a category with Operate Network Recon: Nmap Recon (CommonHuman-Lab/nyxstrike, 157 stars), Add Partial Recon (samugit83/redamon, 3k stars), Nmap (BrownFineSecurity/iothackbot, 859 stars) and Systematic Attacking (mtarcure/claude-vibe-squad, 165 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Operate Network Recon?
cyberful (a GitHub organization) maintains it in cyberful/cyberful, which has 135 GitHub stars. The repository holds 85 skills in this directory. The repository was last updated on August 24, 2026.
Source: cyberful/cyberful on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.