Skill audit report
calculator Audit report.
A simple calculator that can add, subtract, multiply, and divide numbers. Use when the user needs to perform basic arithmetic operations.
OpenAgentSkill Trust Score
OpenAgentSkill Trust Score
The Trust Score helps an agent decide whether a skill is safe enough to shortlist before installation.
GitHub adoption
INFO76
665 GitHub stars
Stars/forks activity
INFO71
665 stars, 64 forks; issue activity unavailable in current metadata
Recent maintenance
PASS88
2mo since push
License clarity
PASS86
MIT
README/SKILL.md completeness
PASS86
Metadata includes enough usage and workflow context
Dependency/runtime risk
PASS90
no major dependency risk hints in public metadata
Install availability
PASS92
npx skills add EXboys/evotown --skill calculator
Install command safety
PASS92
standard package or runtime install path
Permission surface
PASS100
no high-risk permission surface in public metadata
Repository evidence
PASS86
https://github.com/EXboys/evotown/tree/main/backend/arena_skills/calculator
Review status
INFO66
AI review data available
Agent Proven outcomes
INFO54
No agent outcome data yet
Checks
Install and adoption review
Install path
92
npx skills add EXboys/evotown --skill calculator
Repository
88
https://github.com/EXboys/evotown/tree/main/backend/arena_skills/calculator
License
86
MIT
Maintenance
88
2mo since push
AI review
55
main.py does not handle malformed JSON or non-numeric inputs gracefully; json.loads() and float() can raise uncaught exceptions and crash with a traceback.
README/SKILL.md completeness
86
Usable description available
Dependency risk
90
no major dependency risk hints in public metadata
Install command safety
92
standard package or runtime install path
Permission surface
100
no high-risk permission surface in public metadata
Stars/forks activity
71
665 stars, 64 forks; issue activity unavailable in current metadata
Adoption
88
665 GitHub stars
Warnings
- main.py does not handle malformed JSON or non-numeric inputs gracefully; json.loads() and float() can raise uncaught exceptions and crash with a traceback.
- Input validation is minimal: missing fields default to add/0, which can silently produce results instead of reporting invalid requests.
- SKILL.md does not document error behavior, limitations, or the exact output format beyond simple examples.
- float() accepts non-finite values like Infinity/NaN in some JSON inputs, which could lead to misleading results.
- Quality score needs review
Method
This report combines public metadata, AI review output, repository freshness, install readiness, OpenAgentSkill events, quality scoring, trust checks, and the agent safety gate. It is not a full source-code security review.
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