DC lunchtable-tcg
Play LunchTable-TCG, a Yu-Gi-Oh-inspired online trading card game with AI agents
As a process C 51/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
What is at stake
The skill contains fragments that, in the wrong hands, cost money or data. Below: what the installer risks and what the author should do.
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".
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
- Address the high-severity findings: each costs 18 safety points. If one is a false positive, add the rule id to guard.allow in spec.yaml.
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- 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
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high Exfiltration
exfil-webhook-urlscenarios/webhook-setup.md:47Webhook / callback URL commonly used for exfiltration (verify the destination)1. Visit https://webhook.site
Medium and low: 13
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medium Exfiltration
net-redirectable-api-keyexamples/advanced-agent.ts:29Helper sends the API key to a host configured by an environment variable — the key can be redirected to another serverAPI key + configurable base URL from environment
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medium Exfiltration
net-redirectable-api-keyexamples/basic-agent.py:44Helper sends the API key to a host configured by an environment variable — the key can be redirected to another serverAPI key + configurable base URL from environment
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medium Exfiltration
net-redirectable-api-keyexamples/basic-agent.ts:26Helper sends the API key to a host configured by an environment variable — the key can be redirected to another serverAPI key + configurable base URL from environment
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medium Exfiltration
exfil-webhook-urlexamples/README.md:126Webhook / callback URL commonly used for exfiltration (verify the destination) (test fixture / example file)[2026…02Z] ℹ️ Webhook URL: https://abc1….io/webhook
fixture -
low Exfiltration
net-credential-use.clawhub.json:53Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)"command": "curl -X GET https://lunchtable.cards/api/agents/me -H \"Authorization: Bearer $LTCG_API_KEY\"",
vendor-hostquoted -
low Exfiltration
exfil-webhook-urlexamples/README.md:87Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; test fixture / example file)# Copy the https URL (e.g., https://abc1….io)
demofixture -
low Exfiltration
exfil-webhook-urlscenarios/webhook-setup.md:48Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)2. You'll get a unique URL like `https://webhook.site/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`
placeholder -
low Exfiltration
exfil-webhook-urlscenarios/webhook-setup.md:61Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)"url": "https://webhook.site/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
placeholder -
low Exfiltration
exfil-webhook-urlscenarios/webhook-setup.md:72Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)"url": "https://webhook.site/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
placeholder -
low Exfiltration
exfil-webhook-urlscenarios/webhook-setup.md:349Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)3. You'll see: `https://xxxx-xxx-xxx-xxx.ngrok.io`
placeholder -
low Secrets in code
secret-high-entropy-tokenSKILL.md:41High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"apiKey": "ltcg…456",
quoted -
low Secrets in code
secret-high-entropy-tokenSKILL.md:53High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)export LTCG_API_KEY="ltcg…456"
quoted -
low Secrets in code
secret-high-entropy-tokenSKILL.md:544High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)-H "Authorization: Bearer ltcg…456"
quoted
Files scanned: 27. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when") - note
frontmatter-keyunknown frontmatter key "emoji" - note
frontmatter-keyunknown frontmatter key "homepage" - note
frontmatter-keyunknown frontmatter key "repository" - note
frontmatter-keyunknown frontmatter key "requires"
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
- 30Running it twice. 5 mutating operations with no state check
- 70Execution cost. Instruction body is 4384 tokens
- 100Tools and files. No external tools needed
- 100Steps. 120 steps
- 100Consistency. Name and required fields are in place
- 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 80: 120–800 characters recommended
- +3Output format is not stated: the model decides each time
- +2Single-language instructions
- +4Structure: 34 headings
- +3Step-by-step instructions: 120 items
- +4Has examples (23 code blocks)
- +1License stated
Quality base 70; lint remarks subtract, signals add up to 100. Result: 67.