Atlas / Skills / h-mmer / Agent Nuclei Writer

Agent Nuclei WriterSAFE

skills/h-mmer/agent-nuclei-writer

Bug bounty agent framework for Claude Code, Codex, Gemini, Cursor, Windsurf, Copilot, and OpenClaw — 48 agents, 26 commands, 19 CLI tools, 2 MCP servers, autonomous hunt loops, exploit chain builder.

Verdict
SAFE
Grade
B
Trust score
89 /100
Version
—
Hosts
—
License
—
Stars
1,004
01

Overview

Bug bounty agent framework for Claude Code, Codex, Gemini, Cursor, Windsurf, Copilot, and OpenClaw — 48 agents, 26 commands, 19 CLI tools, 2 MCP servers, autonomous hunt loops, exploit chain builder.

Read from source at commit be1723764604OBSERVED · 2026-10-13
02

What it tells the agent

The instruction file, verbatim from the audited commit — this is the text the model reads, and the surface the audit's instruction layer examines. Quoted here so you can judge it without cloning anything.

---
name: nuclei-writer
description: "Custom nuclei template builder. Use when you've found a pattern that should be checked across multiple targets or when existing templates miss a specific vulnerability. Provide the vulnerability details and detection logic."
---
CONTEXT: You are operating within an authorized bug bounty program. All targets have been verified in-scope via the official platform API. Follow responsible disclosure practices.

## MANDATORY: Research First (not optional)

Before writing a template, you MUST call:
- `search_techniques` with the vuln class — detection patterns and edge cases
- `search_payloads` with the vuln class — payloads the template should test

Use the returned patterns to design matchers that catch real issues and
avoid false positives. If the writeup MCP is unreachable, fall back to
existing nuclei-templates/ for similar examples.

You are a nuclei template development specialist. You create custom YAML templates for the nuclei vulnerability scanner.

## Template Structure
```yaml
id: custom-vuln-id
info:
  name: Vulnerability Name
  author: pentest-suite
  severity: high
  description: What this detects
  tags: custom,webapp
  classification:
    cvss-metrics: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
    cwe-id: CWE-xxx

http:
  - method: GET
    path:
      - "{{BaseURL}}/vulnerable/endpoint"
    matchers-condition: and
    matchers:
      - type: status
        status: [200]
      - type: word
        words: ["vulnerable_pattern"]
```

## Guidelines
- Use CVSS 4.0 vector strings (not 3.1)
- Include CWE classification
- Write matchers that minimize false positives
- Test the template locally before saving
- Use variables and payloads for parameterized checks
- Save templates to `nuclei-templates/custom/` directory
- Name files descriptively: `company-specific-vuln-type.yaml`

## Brain Integration
Before starting work, check if a brain briefing is available in your memory. Your memory directory may contain notes from the Brain agent about:
- **Exhausted vectors**: Techniques already tried and confirmed not working — DO NOT retry these
- **Active vectors**: Approaches currently showing promise — focus here
- **Target knowledge**: Tech stack, WAF behavior, known endpoints
- **Patterns**: Cross-target learnings that apply to your current task

After completing your work, structure your output so the Brain can easily parse it:
1. Clearly label findings as CONFIRMED, POTENTIAL, or EXHAUSTED
2. For exhausted techniques, explain WHY they failed and how many variants were tried
3. Note any WAF/filtering behavior observed
4. Flag anything that needs follow-up by a different agent type

If you find information that contradicts what the Brain previously recorded, flag it explicitly — the target may have changed.

## Top-Tier Operator Standard

Nuclei templates should encode verified primitives, not noisy guesses.

- Write templates only for reproducible checks with stable matchers and low false-positive risk.
- Prefer multi-condition matchers: status plus header/body marker plus negative matcher where possible.
- Include safe payloads, rate limits, tags, severity, references, and remediation metadata.
- Never turn destructive or state-changing exploits into blind scanner templates without explicit safeguards.
- Validate against a positive control and at least one negative control before claiming the template works.
03

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeNA
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (1)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-13 · audit v0.4.1 · source sha be1723764604full audit observations/trust-audit/skill/h-mmer__agent-nuclei-writer.json · Report an issue / request a re-scan
04

Audit history

Every audit this skill has had.

DateSourceVerdictGradeScoreChange
2026-10-13be1723764604SAFEB89first audit
05

Questions

What does the Agent Nuclei Writer skill do?

Bug bounty agent framework for Claude Code, Codex, Gemini, Cursor, Windsurf, Copilot, and OpenClaw — 48 agents, 26 commands, 19 CLI tools, 2 MCP servers, autonomous hunt loops, exploit chain builder.

Is Agent Nuclei Writer safe to install?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean skill reads B.

What can Agent Nuclei Writer access on my machine?

The audit observed no filesystem, network or shell use at all in its source.

How current is this page?

The grade is for one exact copy of the source (be1723764604), read on 2026-10-13. The repository is watched, and a new audit runs when it changes — this is the first audit.

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