Atlas / Skills / h-mmer / Dupcheck

DupcheckSAFE

skills/h-mmer/dupcheck

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: dupcheck
description: "Check if a vulnerability has already been reported. Searches platform hacktivity + local findings. Usage: /dupcheck <vuln_type> e.g. /dupcheck XSS in search endpoint"
disable-model-invocation: false
---
Check for duplicate reports: $ARGUMENTS

1. Determine the platform and program from `scope.yaml` in the current directory.
2. Use `bounty-platforms` MCP tool `search_hacktivity` with platform, program, and "$ARGUMENTS" as the query.
3. Also search local findings: `uv run python3 $CLAUDE_PROJECT_DIR/tools/dedup_findings.py --stats --db findings.json`
4. Read `hacktivity.md` if it exists and grep for related terms.
5. Report:
   - Exact or near matches from hacktivity (potential duplicates)
   - Related reports that might overlap
   - If the area appears heavily reported (high duplicate risk)
   - Verdict: likely unique, possible duplicate, or high duplicate risk

## Writeup Cross-Reference (if writeup-search MCP is available)

After checking local findings, also search the writeup database:
- Use `search_writeups` MCP tool with "<finding description> <target>"
- If similar writeups exist, assess whether your finding is novel or a known pattern
- Mention relevant prior art in the "Known Techniques" section of the report

## Top-Tier Duplicate Analysis

Duplicate risk is about overlap of exploit primitive and affected asset, not keyword similarity.

Report four verdict fields:
- `same_asset_same_primitive`: likely duplicate unless your impact is strictly stronger
- `same_primitive_different_asset`: possible duplicate; explain scope difference and novelty
- `same_asset_different_primitive`: usually unique; prove a different root cause
- `known_class_new_chain`: often worth reporting if the chain reaches a new impact tier

Check disclosed writeups for patch language and response tone. If triagers historically close this class as N/A, require chain proof before submission. If public reports stop at a weaker impact, frame your report around the new capability, not the shared first step.
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__dupcheck.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 Dupcheck 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 Dupcheck 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 Dupcheck 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.

Advertisement