Atlas / Skills / h-mmer / Chain

ChainSAFE

skills/h-mmer/chain

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

Install

Commands as the repository documents them. They are shown, not run.

uv run python3 $CLAUDE_PROJECT_DIR/tools/brain.py brief <target>
03

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: chain
description: "Build deep exploit chains — dispatches chain-builder agent. Given bug A, recursively walks the chain graph. Usage: /chain (then describe bug A)"
disable-model-invocation: false
---
Build exploit chain from: $ARGUMENTS

## Process

1. Read brain for current target context:
   `uv run python3 $CLAUDE_PROJECT_DIR/tools/brain.py brief <target>`

2. Get bug A description:
   - If `$ARGUMENTS` contains a bug description → use it
   - Else if brain has a recent confirmed finding → use that
   - Else → ask user to describe the confirmed bug

3. Read `rules/chain-table.md` — the capability→next-bug table

4. Read `policy.md` — extract policy preamble for the agent

5. **ALWAYS dispatch `chain-builder` agent** (model: inherit) with:
   - The confirmed bug A description (exact HTTP request/response)
   - The full chain table from `rules/chain-table.md`
   - Policy preamble (scope + required headers + restrictions)
   - Brain context (tech stack, tested endpoints, known capabilities)
   - Writeup intelligence: call `search_writeups "chain <bug class> escalation"` if MCP available

6. After agent returns:
   - If chain found:
     - `uv run python3 $CLAUDE_PROJECT_DIR/tools/brain.py record <target> confirmed "chain: <summary>" "<full chain>"`
     - Show chain to user with combined impact and CVSS
     - Suggest: `/validate` then `/report`
   - If dead end:
     - `uv run python3 $CLAUDE_PROJECT_DIR/tools/brain.py record <target> exhausted "chain from <bug A>" "<candidates tried>"`
     - Show what was tried and why it failed

No inline chain logic. No capability table. The chain-builder agent does all the work.

## Top-Tier Chain Standard

A chain is valuable only when each link grants a concrete capability.

Before dispatching, classify bug A as one capability:
- identity control: login, link, session, token, role, invite
- data read: PII, secrets, tenant data, internal API response
- data write: config, webhook, template, profile, billing, integration
- execution: script, server-side call, command, workflow run, model/tool action
- network pivot: SSRF, callback, metadata, internal host reachability

Ask the chain-builder for three paths: fastest proof, highest impact, and safest policy-compliant path. Kill chains that require guessing, prohibited data access, or unbounded scanning. A reportable chain must include end-to-end reproduction, where link 2 consumes the capability from link 1 rather than merely coexisting with it.
04

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__chain.json · Report an issue / request a re-scan
05

Audit history

Every audit this skill has had.

DateSourceVerdictGradeScoreChange
2026-10-13be1723764604SAFEB89first audit
06

Questions

What does the Chain 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 Chain 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 Chain 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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