DC open-lesson
(no description)
Not recommendedlow grade D
As a process C 51/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
How to improve
- Add a description to the frontmatter: without it the skill never triggers.
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 · 4
✓ No critical or high findings
Medium and low: 4
-
low Exfiltration
net-credential-useskill.md:49Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)bash -c 'printf "{\"topic\":\"Quantum Computing\",\"days\":60}" | curl -X POST "https://www.openlesson.academy/api/agent/plan" -H "Authorization: Bearer $OPENLESSON_API_KEY" -H "Content-Type: applicatvendor-hostquoted -
low Exfiltration
net-credential-useskill.md:57Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)bash -c "printf '{\"topic\":\"$TOPIC\",\"days\":$DAYS}' | curl -X POST 'https://www.openlesson.academy/api/agent/plan' -H 'Authorization: Bearer $OPENLESSON_API_KEY' -H 'Content-Type: application/jsonvendor-hostquoted -
low Exfiltration
net-credential-useskill.md:63Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)bash -c 'printf "{\"plan_node_id\":\"NODE_UUID\",\"problem\":\"Explain neural networks\"}" | curl -X POST "https://www.openlesson.academy/api/agent/session/start" -H "Authorization: Bearer $OPENLESSONvendor-hostquoted -
low Exfiltration
net-credential-useskill.md:69Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)bash -c 'printf "{\"session_id\":\"SESSION_UUID\",\"audi…e64\":\"BASE64_DATA\",\"audio_format\":\"webm\"}" | curl -X POST "https://www.openlesson.academy/api/agent/session/analyze" -H "Authorizativendor-hostquoted
Files scanned: 3. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- error
frontmatterSKILL.md: no YAML frontmatter block found - error
name-missingSKILL.md: frontmatter has no `name` - error
description-missingSKILL.md: no `description` — the skill can never trigger
Process rating: all ten parameters 51/100
- 0Result and completion. Does not say what the result is
- 0When it triggers. No condition that starts the skill
- 0Inputs and preconditions. Does not say what the process needs to start
- 0Progress reporting. Says nothing while it works
- 30Running it twice. 6 mutating operations with no state check
- 60Tools and files. Uses tools (bash, web, node) that frontmatter does not declare
- 100Steps. 23 steps
- 100Failures and branches. 1 branches, has a failure section
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 2131 tokens
- low 11 top-level sections: this looks like several domains in one skill
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 0: 120–800 characters recommended
- +3Output format is not stated: the model decides each time
- +1No license
- +2Single-language instructions
- +4Structure: 21 headings
- +3Step-by-step instructions: 23 items
- +4Has examples (16 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 0.
External checks
ClawHub: suspicious
The skill is mostly a normal tutoring API integration, but it gives conflicting instructions about creating calendar events or reminders without a clear opt-in boundary.
LLM: suspicious (high) · VirusTotal: suspicious · 28 May 2026