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DC browser-relay

通过 HTTP relay 控制用户本地 Chromium 浏览器（绕过数据中心 IP 封锁），支持截图发送到 Telegram

Not recommendedlow grade D
modbender/skill-library-mcp Agent Skills author: modbender MIT 6 files · 1 script body ≈ 1 620 tokens Open the sourcegithub.com↗ analyzed 2 d ago

通过 HTTP relay 控制用户本地 Chromium 浏览器（绕过数据中心 IP 封锁），支持截图发送到 Telegram

As a process C 51/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions

IntegrationTelegramAI and agentstype and topics are labelled automatically from the skill text
Runs in: OpenClaw Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) Goose OpenCode
JSON
Technical rating
D
56/100
safety, quality, tests
Safety 60%
50
Quality 40%
66
Run on models
none yet
Process rating
C
51/100
Has gaps
Result and completion w 14
0
Inputs and preconditions w 11
0
Failures and branches w 10
0
the three weakest of ten parameters · all ten

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Exfiltration medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".

For the author

If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 14

✓ No critical or high findings

Medium and low: 14
  • medium Exfiltration net-credential-use README.md:61
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" http://loca…792/health
  • medium Exfiltration net-credential-use README.md:64
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" http://loca…792/tabs
  • medium Exfiltration net-credential-use README.md:67
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • medium Exfiltration net-credential-use README.md:71
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • medium Exfiltration net-credential-use README.md:75
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • medium Exfiltration net-credential-use SKILL.md:135
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" http://127.0.0.1:18792/tabs
  • medium Exfiltration net-credential-use SKILL.md:140
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • medium Exfiltration net-credential-use SKILL.md:148
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • medium Exfiltration net-credential-use SKILL.md:174
    Credential used in a network call (verify the destination is the intended service)
    curl -s -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  • low Exfiltration exfil-webhook-url README.md:125
    Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)
    curl -s -X POST "https://api.telegram.org/bot${TG_BOT_TOKEN}/sendPhoto" \
    placeholder
  • low Dangerous commands cmd-background-process SKILL.md:92
    Starts a background / autostarted process
    DISPLAY=:0 nohup chromium --remote-debugging-port=9222 --remote-allow-origins=* > /dev/null 2>&1 &
  • low Exfiltration exfil-webhook-url SKILL.md:190
    Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)
    curl -s -X POST "https://api.telegram.org/bot${TG_BOT_TOKEN}/sendPhoto" \
    placeholder
  • low Exfiltration net-credential-use SKILL.md:190
    Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
    curl -s -X POST "https://api.telegram.org/bot${TG_BOT_TOKEN}/sendPhoto" \
    vendor-host
  • low Dangerous commands cmd-background-process start.sh:70
    Starts a background / autostarted process
    nohup python3 -u relay.py > "$LOG_FILE" 2>&1 &

Files scanned: 6. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning description-no-when description does not say WHEN to use the skill (no "use when")
  • note frontmatter-key unknown frontmatter key "allowed_tools"

Process rating: all ten parameters 51/100

  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Failures and branches. Linear process with no failure handling
  • 20When it triggers. No condition that starts the skill
  • 40Consistency. Frontmatter name (browser-relay) differs from the folder (browser-relay-xiaohongshu)
  • 100Tools and files. No external tools needed
  • 100Steps. 41 steps
  • 100Execution cost. Instruction body is 1620 tokens
  • 100Running it twice. No mutating operations
  • 100Progress reporting. Reports progress

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Description length 64: 120–800 characters recommended
  • +3Output format is not stated: the model decides each time
  • -2localhost URLs: will not work for another user
  • +1No license
  • +2Single-language instructions
  • +4Structure: 29 headings
  • +3Step-by-step instructions: 41 items
  • +4Has examples (20 code blocks)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 66.