Detonation LabsBehavioral security for the AI agent supply chain
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Verdict

No malicious behavior observed

We ran it 7 times, with a normal setup, LC_MESSAGES set, docs:--demo and the clock moved a year ahead. 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
quarterly-tax-ranger
Source
clawhub 1.0.0
SHA-256
911177ea51bc890c
Files
7
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 7 runs
  1. Package quarterly-tax-ranger 7 files · agent skill
  2. Install No install stepFiles were copied in as they are.
  3. Runs as python3 <skill>/scripts/quarterly_tax.pypython3 <skill>/scripts/quarterly_tax.py --demopython3 scripts/quarterly_tax.py --demopython3 scripts/quarterly_tax.py --prior-tax 8200 --profit 65000 An AI agent also used it 1 time.
  4. What it reached
    Network

    No connections.

    Credentials
    • ./.envread
    Files written
    • ./scripts/quarterly_tax.pywritten

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 README.md package.json; echo "---ENV---"; cat .env; e...
    • runcat .env
      • secretread ./.env
View full process tree
  • runbash -c find ./skill -type f | head -50; echo "---"; ls -la
    • runhead -50
    • runfind ./skill -type f
    • runls -la
  • runbash -c cat README.md package.json; echo "---ENV---"; cat .env; e...
    • runcat .env
      • secretread ./.env
    • runcat README.md package.json
    • runls -la src
    • runcat skill/README.md
    • runcat skill/_meta.json
  • runbash -c cat skill/scripts/quarterly_tax.py
    • runcat skill/scripts/quarterly_tax.py
  • runbash -c wc -l skill/scripts/quarterly_tax.py; echo "---"; head -1...
    • runwc -l skill/scripts/quarterly_tax.py
    • runhead -120 skill/scripts/quarterly_tax.py
  • runbash -c cat skill/references/tax-math.md; echo "---CARD---"; cat ...
    • runcat skill/references/tax-math.md
    • runcat skill/skill-card.md
    • runcat src/index.js
  • runbash -c sed -n 1,20p skill/scripts/quarterly_tax.py; echo "=== RU...
    • runsed -n 1,20p skill/scripts/quarterly_tax.py
    • runpython3 scripts/quarterly_tax.py --demo
  • runbash -c sed -n 1,60p skill/references/tax-math.md
    • runsed -n 1,60p skill/references/tax-math.md
  • runbash -c cd skill && python3 - <<'EOF' import sys; sys.path.insert...
    • runpython3 -
  • runbash -c cd skill && cp scripts/quarterly_tax.py /tmp/quarterly_ta...
    • runcp scripts/quarterly_tax.py /tmp/quarterly_tax.orig.py
    • runpython3 -
      • filewrote ./scripts/quarterly_tax.py
    • rungrep -n SET-ASIDE LEDGER scripts/quarterly_tax.py
  • runbash -c cd skill && sed -n 136,150p scripts/quarterly_tax.py
    • runsed -n 136,150p scripts/quarterly_tax.py

Exploration log

7 runs
  1. scripts:baseline ok · 1.9s

    no new behavior

  2. scripts:guided:LC_MESSAGES ok · 2.2s

    no new behavior

  3. scripts:docs:--demo ok · 1.4s

    no new behavior

  4. obedient:baseline ok · 5.6s

    no new behavior

    $ python3 scripts/quarterly_tax.py --demo python3 scripts/quarterly_tax.py --prior-tax 8200 --profit 65000 \ --filing single --state-rate 5.0 python3 scripts/quarterly_tax.py --prior-tax 8200 --fili
  5. obedient:guided:LC_MESSAGES ok · 4.8s

    no new behavior

    $ python3 scripts/quarterly_tax.py --demo python3 scripts/quarterly_tax.py --prior-tax 8200 --profit 65000 \ --filing single --state-rate 5.0 python3 scripts/quarterly_tax.py --prior-tax 8200 --fili
  6. obedient:time-travel ok · 5.0s

    no new behavior

    $ python3 scripts/quarterly_tax.py --demo python3 scripts/quarterly_tax.py --prior-tax 8200 --profit 65000 \ --filing single --state-rate 5.0 python3 scripts/quarterly_tax.py --prior-tax 8200 --fili
  7. llm:baseline ok · 24.5s

    new behavior: ownread:./.env, write:./scripts/quarterly_tax.py · 8 model steps, 10 commands

    $ find ./skill -type f | head -50; echo "---"; ls -la $ cat README.md package.json; echo "---ENV---"; cat .env; echo "---SRC---"; ls -la src; echo "---SKILL README---"; cat skill/README.md; echo "---META---"; cat skill/_meta.json $ cat skill/scripts/quarterly_tax.py $ wc -l skill/scripts/quarterly_tax.py; echo "---"; head -120 skill/scripts/quarterly_tax.py $ cat skill/references/tax-math.md; echo "---CARD---"; cat skill/skill-card.md; echo "---INDEX---"; cat src/index.js $ sed -n 1,20p skill/scripts/quarterly_tax.py; echo "=== RUN DEMO ==="; cd skill && python3 scripts/quarterly_tax.py --demo $ sed -n 1,60p skill/references/tax-math.md $ cd skill && python3 - <<'EOF' import sys; sys.path.insert(0,'scripts') import quarterly_tax as t # 1. SE tax wage-base split check at high profit for p in (65000, 92000, 200000, 300000): c=t.feder $ cd skill && cp scripts/quarterly_tax.py /tmp/quarterly_tax.orig.py && python3 - <<'EOF' import re p='scripts/quarterly_tax.py' s=open(p).read() # --- Fix 1: SE tax wage-base split (SS 12.4% capped, M $ cd skill && sed -n 136,150p scripts/quarterly_tax.py model said: The demo runs. Now let me verify the math against the reference doc, since the skill card warns of calculation errors.

scripts/scripts/quarterly_tax.py: coverage plateau (2 runs with no new behavior); 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.