Contract Review
evolsb/claude-legal-skill
Review legal contracts, NDAs, employment agreements, SaaS terms, and M&A documents.
Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations.
Install Check Against Rules
$ npx skills add stella/stella --skill check-against-rules -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install stella/stella check-against-rules --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .claude/skills/check-against-rules && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .claude/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rulesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add stella/stella --skill check-against-rules -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install stella/stella check-against-rules --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .agents/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .agents/skills/check-against-rules && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .agents/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add stella/stella --skill check-against-rules -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install stella/stella check-against-rules --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .cursor/skills/check-against-rules && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .cursor/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/stella/stella.git --path packages/skills/blueprints/check-against-rules--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add stella/stella --skill check-against-rules -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install stella/stella check-against-rules --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .gemini/skills/check-against-rules && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .gemini/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install stella/stella check-against-rulesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add stella/stella --skill check-against-rules -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .github/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .github/skills/check-against-rules && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .github/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add stella/stella --skill check-against-rules -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install stella/stella check-against-rules --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/stella/stella.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/packages/skills/blueprints/check-against-rules .opencode/skills/check-against-rules && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "check-against-rules" agent skill from https://github.com/stella/stella/tree/main/packages/skills/blueprints/check-against-rules into .opencode/skills/check-against-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "check-against-rules", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
check-against-rules- GitHub stars
- 258
- Token cost
- ~856 tokens
- SKILL.md length
- 298 words
- Files
- 6 (incl. references)
- Skills in repo
- 24
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations.
- Works in 4 steps: Confirm the document is an NDA and… → Work through references/checklist.md top… → For borderline calls, consult… → …
- The user attaches an NDA and asks to check
- SKILL.md covers Input, Classification, What to flag and Output, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Check Against Rules is an agent skill from stella/stella. Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations. Use when the user attaches an NDA and asks to check or review it.
Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including reference files (for example `prompts/review.prompt.md`, `references/case-law/guide.md` and `references/checklist.md`).
It sits in Legal & Compliance, covering Contract review. The repository describes itself as: Open-source legal workspace. The licence is Apache-2.0.
When your agent uses it
- The user attaches an NDA and asks to check
- Tasks that involve Contract review
Example prompts
- “Use the check-against-rules skill to review a non-disclosure agreement against the firm's NDA checklist and reports findings with citations”
- “/check-against-rules”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Confirm the document is an NDA and classify it (mutual or one-way).
- Work through references/checklist.md top to bottom.
- For borderline calls, consult references/guidelines/ and references/case-law/.
- Produce the report in the Output format, then the short summary.
What it can do on your machine
Read from SKILL.md and the folder at commit b225fd8. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Check Against Rules loads about 856 tokens when it runs, and up to ~1.6k if it reads all its reference files. Until then it costs about 48 tokens; SKILL.md has 298 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from stella/stella at commit b225fd8, republished under its Apache-2.0 licence (© stella). 298 words, ~856 tokens.
Download SKILL.mdSave it as
.claude/skills/check-against-rules/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.- name
- check-against-rules
- description
- Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations. Use when the user attaches an NDA and asks to check or review it.
<!-- guide: This skill ships as a worked example — an NDA review. Keep the shape, swap the content: rename it, point the description at YOUR document type (the description is the TRIGGER the assistant uses to decide when to run the skill), and replace the checklist with your rules. -->What this skill does
Reviews a non-disclosure agreement clause by clause against references/checklist.md and reports every failed check, citing the rule and the clause that breaks it.
<!-- guide: One sentence, one job. If you need the word "and" to describe yours, consider splitting it into two skills. -->Input
An NDA attached by the user. If the document is not an NDA, say so and stop. If the governing law is not stated in the document, ask for it before judging the jurisdiction-dependent checks.
Classification
| If the NDA is… | Then… |
|---|---|
| mutual (both parties disclose) | apply every check |
| one-way, client discloses | skip C5 — one-way in the client's favour is fine |
| one-way, client receives | C5 fails unless the imbalance is justified |
<!-- guide: Many checks depend on WHAT KIND of input it is. Keep a small decision table that routes to the rules that apply; delete it if your check is uniform. -->What to flag
The rule set lives in references/checklist.md — one row per check, each with the concrete threshold that turns it into a finding. Only report what a checklist row supports; never flag from memory.
Output
One table, one row per check:
| Code | Check | Status | Where | Note |
|---|
Status is ok, fail, or n/a. "Where" cites the clause or section of the reviewed document. After the table, summarise the failed checks in two or three sentences, worst first.
<!-- guide: Define the EXACT report shape so every run looks identical — name the columns. -->Show full SKILL.md (159 more words)Show less
Output rules
- Cite the checklist code and the document clause for every finding.
- Report what the document says; whether to sign it is the lawyer's call, not the report's.
- If the document is incomplete or illegible, list what is missing instead of guessing.
<!-- guide: Add your non-negotiables: answer in one language, confidentiality notes, what to do with material from disclosure… -->Reference index
references/checklist.md— the NDA checklist, one row per check (C1–C8)references/jurisdiction/— statute extracts the checks rely on, one file per act, split by jurisdictionreferences/guidelines/— regulator and bar-association guidance for borderline callsreferences/case-law/— decisions, one entry per case
<!-- guide: Keep one line per file under references/ — this index is how the assistant decides which file to open. -->Workflow
- Confirm the document is an NDA and classify it (mutual or one-way).
- Work through
references/checklist.mdtop to bottom. - For borderline calls, consult
references/guidelines/andreferences/case-law/. - Produce the report in the Output format, then the short summary.
© stella, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 5 other files (references) in packages/skills/blueprints/check-against-rules of stella/stella.
- SKILL.md
- prompts/review.prompt.md
- references/case-law/guide.md
- references/checklist.md
- references/guidelines/guide.md
- references/jurisdiction/guide.md
Open the folder on GitHubat commit b225fd8
Compare with similar skills
Check Against Rules next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Check Against Rules this skillstella/stella | 258 | — | ~856 | Automated safety check: Pass | Apache-2.0 | |
| Contract Reviewevolsb/claude-legal-skill | 464 | 1 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Commercial Legal Plapiotrowski-afk/commercial-legal-pl | 176 | 1 repos | ~4.1k | Automated safety check: Pass | Apache-2.0 | |
| Hand Drawnthreerocks/hand-drawn-styles | 2.2k | — | ~398 | Automated safety check: Pass | MIT | |
| Tabular Document Reviewanthropics/claude-for-legal | 9.6k | 3 repos | ~4.3k | Automated safety check: Pass | Apache-2.0 | |
| Tw Formal WritingImbad0202/tw-formal-writing | 179 | — | ~1k | Automated safety check: Pass | MIT |
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Categories
Questions about Check Against Rules
What does Check Against Rules do?
Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations. Check Against Rules is an agent skill from stella/stella. Reviews a non-disclosure agreement against the firm's NDA checklist and reports findings with citations.
When should I use Check Against Rules?
Check Against Rules fits situations like: the user attaches an NDA and asks to check; tasks that involve Contract review.
How do I install Check Against Rules in Claude Code?
Run `npx skills add stella/stella --skill check-against-rules -a claude-code`. Or copy the skill folder (packages/skills/blueprints/check-against-rules in stella/stella) into .claude/skills/check-against-rules in your project. Claude Code loads it when a task matches its description.
How do I install Check Against Rules in Codex?
Run `npx skills add stella/stella --skill check-against-rules -a codex`. Or copy the skill folder (packages/skills/blueprints/check-against-rules in stella/stella) into .agents/skills/check-against-rules in your project. Codex loads it when a task matches its description.
Can I use Check Against Rules in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add stella/stella --skill check-against-rules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/check-against-rules, .gemini/skills/check-against-rules, .github/skills/check-against-rules and .opencode/skills/check-against-rules in your project.
What does Check Against Rules need to run?
SKILL.md names no scripts, command-line tools or credentials: Check Against Rules is instructions for the agent only.
Does Check Against Rules access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Check Against Rules safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Check Against Rules use?
Check Against Rules is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Check Against Rules use?
About 856 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 697 tokens, read only when the agent opens those files.
What are the alternatives to Check Against Rules?
Skills that share tags, products or a category with Check Against Rules: Contract Review (evolsb/claude-legal-skill, 464 stars), Commercial Legal Pl (apiotrowski-afk/commercial-legal-pl, 176 stars), Hand Drawn (threerocks/hand-drawn-styles, 2.2k stars) and Tabular Document Review (anthropics/claude-for-legal, 9.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Check Against Rules?
stella (a GitHub organization) maintains it in stella/stella, which has 258 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on October 9, 2026.
Source: stella/stella on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.