essential-tools

essential-tools is a skill for Claude Code from transilienceai/communitytools. It costs 30 tokens per session (424 once invoked), scanned A, original, MIT.

A collection of penetration-testing tools and methods, including Burp Suite, Playwright, binary analysis, Nuclei, and sslscan. It also covers testing standards and professional report writing.

In plain words
What is it for?
It helps intercept and test web traffic, automate browsers, capture evidence, inspect binaries, scan for exposures, review TLS settings, follow testing methodologies, and generate reports.
Why use it?
It gives security testers a common process for examining websites, APIs, browsers, executable files, exposed services, and TLS settings. It helps turn test results into reproducible findings and reports.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the communitytools plugin — 48 skills, 5 commands, 9 agents, 1 hook shipped together

Good fit It helps intercept and test web traffic, automate browsers, capture evidence, inspect binaries, scan for exposures, review TLS settings, follow testing methodologies, and generate reports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/transilienceai/communitytools/essential-tools
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add transilienceai/communitytools --skill essential-tools
Clone the repo
git clone --depth 1 https://github.com/transilienceai/communitytools

Made for: Claude Code.

Or install communitytools, the plugin that ships this one along with the rest of its 48 skills, 5 commands, 9 agents, 1 hook.

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.

agentmods badge for essential-tools

README.md
[![agentmods](https://agentmods.dev/badge/skills/transilienceai/communitytools/essential-tools/github.svg)](https://agentmods.dev/skills/transilienceai/communitytools/essential-tools)
Your own site
<a href="https://agentmods.dev/skills/transilienceai/communitytools/essential-tools"><img src="https://agentmods.dev/badge/skills/transilienceai/communitytools/essential-tools/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.

agentmods 80×15 button for essential-tools

Your own site · 80×15
<a href="https://agentmods.dev/skills/transilienceai/communitytools/essential-tools"><img src="https://agentmods.dev/badge/skills/transilienceai/communitytools/essential-tools.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 424 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00424
Opus 5.5 $0.00012 $0.00170
Sonnet 5.5 $0.00006 $0.00085
Haiku 4.5 $0.00003 $0.00042

Measured 1mo ago against content hash 1badc4407292, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

essential-tools 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.

`command -v subfinder nuclei sslscan httpx; curl -s "https://crt.sh/?q=%25.${DOMAIN}&output=json" | head -c1`
skills/essential-tools/SKILL.md · 41 lines

What it actually says

Essential Tools

Core tools, methodology, and reporting standards for penetration testing.

Components

Component Purpose
Burp Suite Proxy, scanner, intruder, repeater, sequencer
Playwright Browser automation, evidence capture, SPA testing
Binary Analysis Static analysis, reverse engineering, string extraction
Nuclei Templated exposure & misconfiguration scanning
sslscan TLS posture (protocols, ciphers, cert)
Methodology PTES, OWASP WSTG, attack prioritization
Reporting Professional report templates, PDF generation

Reference

  • reference/essential-skills*.md - Burp Suite techniques and web security testing methodology
  • reference/playwright-automation.md - Playwright MCP usage for pentesting
  • reference/binary-analysis-quickstart.md - Static analysis for executable files and reverse engineering
  • reference/web-application-attacks.md - Web application attack methodology
  • formats/transilience-report-style/pentest-report.md - Finding quality standards, compliance mapping, and pre-delivery checklist

Required-at-start tooling (web/API engagements)

Run an availability check before declaring recon complete:

command -v subfinder nuclei sslscan httpx; curl -s "https://crt.sh/?q=%25.${DOMAIN}&output=json" | head -c1

  • Subdomain/CT enum: subfinder, certspotter, crt.sh
  • TLS posture: sslscan
  • Templated exposure: nuclei

If a tool-class is unavailable, record it as an explicit limitation — NEVER declare recon COMPLETE having skipped a whole class. Hand-rolled urllib is not a substitute (see skills/coordination/reference/principles.md 'Real tools before hand-rolled HTTP').

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.

  1. 1mo ago First seen · 41 lines · 30 tokens per session scan A 1badc4407292

Subscribe to this mod's changes

essential-tools is a skill published in the GitHub repository transilienceai/communitytools (591 stars, last pushed 2mo ago), licensed MIT. It adds 30 tokens to every session and 424 once invoked, about $0.0001 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 2026-08-30.

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