Detonation LabsBehavioral security for the AI agent supply chain

Verdict

No malicious behavior observed

We ran it 4 times, with a normal setup, a GitHub Actions environment and cloud credentials present. It made no network connections. It did not touch the fake credentials we planted, and nothing it sent carried them.

1 finding. Scanned 26 Oct 2026 by detonator 0.5.1.

Target
ui-engineering
Source
clawhub 1.0.0
SHA-256
ed27121c576a633c
Files
67
RecommendationNo action needed

Nothing observed calls for action. This is evidence, not a guarantee.

batch:clawhub:2026-10-26

What this package does

observed across 4 runs
  1. Package ui-engineering 67 files · agent skill
  2. Install No install stepFiles were copied in as they are.
  3. Runs as ls -lals -la skillls skill/referenceshead -100 An AI agent also used it 1 time.
  4. What it reached
    Network

    No connections.

    Credentials
    • ./.envread
    Files written

    Nothing outside its own folder.

We planted fake AWS, SSH, npm and GitHub keys and a .env file before every run. Red means something left or was planted to run later.

Findings

F01 Low

Loaded the project's .env file

Confidence
Info The package loaded the project's .env file.
Observed in
llm:baseline

Description

The process loaded the project's .env file. Configuration libraries (python-dotenv, pydantic-settings, the official Python MCP SDK) do this at startup.

Impact

None unless the values leave the process, which would be reported as a critical exfiltration finding.

Evidence

./.env (by cat)

Remediation

No action needed. Keep long-lived secrets out of project .env files where possible.

Process tree

run llm:baseline

Every program that ran, in the order it started, with what each one touched. Red marks the path to a leak or a planted file.

  • runbash -c cat package.json; echo "---"; cat README.md; echo "---"; ...
    • runcat .env
      • secretread ./.env
View full process tree
  • runbash -c ls -la; echo "---"; ls -la skill; echo "---"; ls skill/re...
    • runls -la
    • runls -la skill
    • runls skill/references
    • runhead -100
  • runbash -c cat skill/references/_meta_registry.md
    • runcat skill/references/_meta_registry.md
  • runbash -c cat package.json; echo "---"; cat README.md; echo "---"; ...
    • runcat .env
      • secretread ./.env
    • runcat package.json
    • runcat README.md
    • runcat .gitignore
    • runls -la src
    • runcat src/index.js
    • runsed s/=.*/=<redacted>/
    • rungit log --oneline
    • runhead -20
  • runbash -c cat skill/README.md; echo "---"; cat skill/skill-card.md;...
    • runcat skill/README.md
    • runcat skill/skill-card.md
    • runcat skill/_meta.json
  • runbash -c cat skill/references/stripe.md
    • runcat skill/references/stripe.md
  • runbash -c cat skill/references/linear.md
    • runcat skill/references/linear.md
  • runbash -c cd skill/references; for f in *.md; do echo "=== $f ($(wc...
    • runwc -l ×39
    • runhead -8 ×39
    • runhead -c 400 _meta_registry.md
    • runhead -c 400 active_theory.md
    • runhead -c 400 aesop.md
    • runhead -c 400 airbnb.md
    • runhead -c 400 alibaba.md
    • runhead -c 400 apple.md
    • runhead -c 400 arc.md
    • runhead -c 400 bilibili.md
    • runhead -c 400 bruno_simon.md
    • runhead -c 400 bytedance.md
    • runhead -c 400 cash_app.md
    • runhead -c 400 claude.md
    • runhead -c 400 discord.md
    • runhead -c 400 dji.md
    • runhead -c 400 duolingo.md
    • runhead -c 400 editorial.md
    • runhead -c 400 figma.md
    • runhead -c 400 flighty.md
    • runhead -c 400 game_gris.md
    • runhead -c 400 game_monument.md
    • runhead -c 400 game_nier.md
    • runhead -c 400 game_persona.md
    • runhead -c 400 geek_hacker.md
    • runhead -c 400 geek_primer.md
    • runhead -c 400 geek_retro.md
    • runhead -c 400 geek_tui.md
    • runhead -c 400 gentler.md
    • runhead -c 400 google.md
    • runhead -c 400 ibm.md
    • runhead -c 400 linear.md
    • runhead -c 400 locomotive.md
    • runhead -c 400 microsoft.md
    • runhead -c 400 moma.md
    • runhead -c 400 nasa.md
    • runhead -c 400 nike.md
    • runhead -c 400 nio.md
    • runhead -c 400 notion.md
    • runhead -c 400 nyt.md
    • runhead -c 400 openai.md
  • runbash -c cd skill/references; cat stripe.md | head -40; echo "====...
    • runhead -40
    • runcat stripe.md
    • runcat presentation_scroll.md
    • runcat personal_blog.md
  • runbash -c cd skill/references; cat stripe.md; echo "=========="; ca...
    • runcat stripe.md
    • runcat presentation_scroll.md
  • runbash -c cd skill/references; cat stripe.md
    • runcat stripe.md
  • runbash -c cd skill/references; head -c 1500 stripe.md; echo; echo "...
    • runhead -c 1500 stripe.md
    • runhead -c 1500 presentation_scroll.md

Exploration log

4 runs
  1. obedient:baseline ok · 0.7s

    no new behavior

    $ ui-engineering/ ├── SKILL.md └── references/ ├── _meta_registry.md <- START HERE ├── apple.md ├── stripe.md ├── personal_blog.md ├── ... (60+ specs)
  2. obedient:ci-github ok · 0.7s

    no new behavior

    $ ui-engineering/ ├── SKILL.md └── references/ ├── _meta_registry.md <- START HERE ├── apple.md ├── stripe.md ├── personal_blog.md ├── ... (60+ specs)
  3. obedient:cloud-creds ok · 0.5s

    no new behavior

    $ ui-engineering/ ├── SKILL.md └── references/ ├── _meta_registry.md <- START HERE ├── apple.md ├── stripe.md ├── personal_blog.md ├── ... (60+ specs)
  4. llm:baseline ok · 34.1s

    new behavior: ownread:./.env · 8 model steps, 11 commands

    $ ls -la; echo "---"; ls -la skill; echo "---"; ls skill/references | head -100 $ cat skill/references/_meta_registry.md $ cat package.json; echo "---"; cat README.md; echo "---"; cat .gitignore; echo "---"; ls -la src; echo "---"; for f in src/*; do echo "== $f"; cat "$f"; done; echo "---"; cat .env | sed 's/=.*/=<redact $ cat skill/README.md; echo "---"; cat skill/skill-card.md; echo "---"; cat skill/_meta.json $ cat skill/references/stripe.md $ cat skill/references/linear.md $ cd skill/references; for f in *.md; do echo "=== $f ($(wc -l < $f) lines)"; head -c 400 "$f" | head -8; echo; done $ cd skill/references; cat stripe.md | head -40; echo "=========="; cat presentation_scroll.md; echo "=========="; cat personal_blog.md $ cd skill/references; cat stripe.md; echo "=========="; cat presentation_scroll.md $ cd skill/references; cat stripe.md model said: I'll start by exploring the project and the skill's registry to understand what's available.

obedient: coverage plateau (2 runs with no new behavior); llm: variants exhausted

Note

Observed behavior only. A clean result does not prove a package is safe. Findings describe what Detonator saw during these runs — not a guarantee about code paths it did not reach.