Detonation LabsBehavioral security for the AI agent supply chain
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Verdict

No malicious behavior observed

We ran it 1 time, with a normal setup. It contacted pressmark.dev. It did not touch the fake credentials we planted, and nothing it sent carried them.

2 findings. Scanned 26 Oct 2026 by detonator 0.5.1.

Target
pressmark
Source
clawhub 1.2.1
SHA-256
ec962245aa0e3a29
Files
3
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 1 run
  1. Package pressmark 3 files · agent skill
  2. Install No install stepFiles were copied in as they are.
  3. Runs as ls -lals -la skillcat skill/SKILL.mdcat .env An AI agent also used it 1 time.
  4. What it reached
    Network
    • pressmark.dev 16 connections, 2.1 KB sent
    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

Network destinations contacted

Confidence
Info The package connected to these hosts.
Observed in
llm:baseline

Description

Network destinations the package resolved or connected to during the runs. All traffic was captured by the sandbox; nothing reached the internet.

Impact

Context only. Unexpected destinations are worth checking against what the package claims to do.

Evidence

pressmark.dev

Remediation

Confirm each host is expected (the package's API, its registry). Allowlist expected egress in production.

F02 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 skill/_meta.json; echo "---"; cat skill/skill-card.md...
    • runcat .env
      • secretread ./.env
View full process tree
  • runbash -c ls -la; echo "---"; ls -la skill; echo "---"; cat skill/S...
    • runls -la
    • runls -la skill
    • runcat skill/SKILL.md
  • runbash -c cat skill/_meta.json; echo "---"; cat skill/skill-card.md...
    • runcat .env
      • secretread ./.env
    • runcat skill/_meta.json
    • runcat skill/skill-card.md
    • runcat README.md
    • runcat package.json
    • runsed s/=.*/=<redacted>/
    • runls -la src
    • runhead -20
    • rungit log --oneline
  • runbash -c cat src/index.js; echo "---"; cat .gitignore; echo "---";...
    • runcat src/index.js
    • runcat .gitignore
    • runwhich curl node python3 jq
  • runbash -c cd /tmp && curl -sS -m 20 -i -X POST https://pressmark.de...
    • runhead -40
    • runcurl -sS -m 20 -i -X
      • netpressmark.dev:443 sent 327 B
  • runbash -c cd /tmp && echo "== tools/list ==" && curl -sS -m 20 -X P...
    • runhead -c 2000
    • runcurl -sS -m 20 -X POST
      • netpressmark.dev:443 sent 222 B
    • runcurl -sS -m 20 -X POST
      • netpressmark.dev:443 sent 218 B
    • runhead -c 500
    • runhead -20
    • runcurl -sS -m 20 -i https://pressmark.dev/mcp
      • netpressmark.dev:443 sent 79 B
  • runbash -c cd /tmp && echo "== tools/call generate_document ==" && c...
    • runcurl -sS -m 20 -X POST
      • netpressmark.dev:443 sent 280 B
    • runhead -c 1000
    • runhead -c 500 ×2
    • runcurl -sS -m 20 -X POST
      • netpressmark.dev:443 sent 188 B
    • runcurl -sS -m 20 -X POST
      • netpressmark.dev:443 sent 139 B
    • runcurl -sS -m 20 -D -
      • netpressmark.dev:443 sent 79 B
  • runbash -c cd /tmp && echo "== studio ==" && curl -sS -m 20 -o /dev/...
    • runcurl -sS -m 20 -o /dev/null
      • netpressmark.dev:443 sent 76 B
    • runcurl -sS -m 20 https://pressmark.dev/
      • netpressmark.dev:443 sent 76 B
    • runhead -c 600
    • rungrep -rIl -i pressmark\|generate_document\|calculate_totals / --include=*.js
    • rungrep -v ^/proc
    • runhead -20
  • rungetent hosts pressmark.dev
    • netDNS lookups for pressmark.dev 34 queries
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 79 B
    • runhead -c 120 /tmp/r ×6
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 79 B
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 82 B
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 84 B
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 88 B
    • runcurl -sS -m 15 -o /tmp/r
      • netpressmark.dev:443 sent 96 B

Exploration log

1 run
  1. llm:baseline ok · 64.4s

    new behavior: dns:pressmark.dev, exec:curl, ownread:./.env · 8 model steps, 8 commands

    $ ls -la; echo "---"; ls -la skill; echo "---"; cat skill/SKILL.md $ cat skill/_meta.json; echo "---"; cat skill/skill-card.md; echo "---"; cat README.md; echo "---"; cat package.json; echo "---"; cat .env | sed 's/=.*/=<redacted>/'; echo "---"; ls -la src; echo "---"; $ cat src/index.js; echo "---"; cat .gitignore; echo "---"; which curl node python3 jq 2>/dev/null $ cd /tmp && curl -sS -m 20 -i -X POST https://pressmark.dev/mcp \ -H 'Content-Type: application/json' \ -H 'Accept: application/json, text/event-stream' \ -d '{"jsonrpc":"2.0","id":1,"method":"in $ cd /tmp && echo "== tools/list ==" && curl -sS -m 20 -X POST https://pressmark.dev/mcp -H 'Content-Type: application/json' -H 'Accept: application/json, text/event-stream' -d '{"jsonrpc":"2.0","id":2, $ cd /tmp && echo "== tools/call generate_document ==" && curl -sS -m 20 -X POST https://pressmark.dev/mcp -H 'Content-Type: application/json' -H 'Accept: application/json, text/event-stream' -d '{"json $ cd /tmp && echo "== studio ==" && curl -sS -m 20 -o /dev/null -w '%{http_code} %{content_type} %{size_download}\n' https://pressmark.dev/ ; curl -sS -m 20 https://pressmark.dev/ | head -c 600; echo; e $ cd /tmp && for p in /mcp /api /health /v1/tools /openapi.json /.well-known/mcp.json; do printf '%-24s ' "$p"; curl -sS -m 15 -o /tmp/r -w '%{http_code} %{content_type} ' "https://pressmark.dev$p"; hea model said: The endpoint is a static stub: it returns the same hardcoded token for valid JSON-RPC, unknown methods, and even malformed JSON. Let me confirm the Studio site and check for any local implementation.

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.