Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add skala-io/legal-skills --skill open-source-licensegit clone --depth 1 https://github.com/skala-io/legal-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/skala-io/legal-skills/open-source-license)<a href="https://agentmods.dev/skills/skala-io/legal-skills/open-source-license"><img src="https://agentmods.dev/badge/skills/skala-io/legal-skills/open-source-license/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/skala-io/legal-skills/open-source-license"><img src="https://agentmods.dev/badge/skills/skala-io/legal-skills/open-source-license.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00088 | $0.01429 |
| Opus 5 | $0.00044 | $0.00714 |
| Sonnet 5 | $0.00018 | $0.00286 |
| Haiku 4.5 | $0.00009 | $0.00143 |
Grade A, and why
open-source-license scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
First published on Skala Legal Skills
Legal Disclaimer
This skill is provided for informational and educational purposes only and does not constitute legal advice. The analysis and information provided should not be relied upon as a substitute for consultation with a qualified attorney. No attorney-client relationship is created by using this skill. Open source licensing involves complex legal considerations that may vary by jurisdiction. Laws and regulations vary by jurisdiction and change over time. Always consult with a licensed attorney in your jurisdiction for advice on specific legal matters. The creators and publishers of this skill disclaim any liability for actions taken or not taken based on the information provided.
Open Source License Skill
Comprehensive guidance for open source license selection, compliance review, and documentation drafting.
Capabilities
1. License Selection
Help users choose the right license based on their goals using the decision tree.
2. License Comparison
Explain differences between licenses, compatibility, and trade-offs.
3. Compliance Review
Analyze projects for license compliance issues and compatibility conflicts.
4. License Drafting
Generate LICENSE files, NOTICE files, and source file headers using canonical texts.
Workflow
For License Selection Questions
- Read
references/selection/decision-tree.md - Ask clarifying questions based on the decision tree:
- Primary goal (adoption vs keeping code open)?
- Patent protection needed?
- Library or application?
- SaaS/network use?
- Provide recommendation with reasoning
- Reference notable projects using recommended license
- Offer to generate LICENSE file if desired
For License Comparison Questions
- Read
references/selection/comparison-matrix.md - Compare requested licenses across key dimensions:
- Permissions (commercial use, distribution, modification)
- Conditions (attribution, copyleft, source disclosure)
- Limitations (liability, warranty)
- Highlight key differences
- Provide examples of projects using each license
What ships with it
11 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/compliance/checklist.md 6.0 KB
- references/compliance/common-issues.md 8.1 KB
- references/compliance/compatibility.md 7.3 KB
- references/licenses/copyleft.md 12 KB
- references/licenses/permissive.md 20 KB
- references/licenses/specialty.md 9.0 KB
- references/selection/comparison-matrix.md 5.4 KB
- references/selection/decision-tree.md 5.6 KB
- references/templates/license-files.md 17 KB
- references/templates/notice-files.md 7.3 KB
- references/templates/source-headers.md 9.4 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 13d ago First seen · 157 lines · 88 tokens per session scan A 0cf4c203ee0d
open-source-license is a skill published in the GitHub repository skala-io/legal-skills (48 stars, last pushed 7mo ago), licensed Apache-2.0. It adds 88 tokens to every session and 1,429 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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