Contract Review
evolsb/claude-legal-skill
Review legal contracts, NDAs, employment agreements, SaaS terms, and M&A documents.
Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness.
Install Opposing Counsel
$ npx skills add mohitagw15856/pm-claude-skills --skill opposing-counsel -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitagw15856/pm-claude-skills opposing-counsel --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/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/opposing-counsel .claude/skills/opposing-counsel && 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 "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .claude/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counselType 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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitagw15856/pm-claude-skills opposing-counsel --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/opposing-counsel .agents/skills/opposing-counsel && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .agents/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitagw15856/pm-claude-skills opposing-counsel --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/opposing-counsel .cursor/skills/opposing-counsel && 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 "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .cursor/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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/mohitagw15856/pm-claude-skills.git --path skills/opposing-counsel--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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitagw15856/pm-claude-skills opposing-counsel --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/opposing-counsel .gemini/skills/opposing-counsel && 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 "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .gemini/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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 mohitagw15856/pm-claude-skills opposing-counselInstalls 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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/opposing-counsel .github/skills/opposing-counsel && 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 "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .github/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitagw15856/pm-claude-skills opposing-counsel --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/opposing-counsel .opencode/skills/opposing-counsel && 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 "opposing-counsel" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/opposing-counsel into .opencode/skills/opposing-counsel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opposing-counsel", 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
opposing-counsel- GitHub stars
- 1.4k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 568 words
- Files
- 2 (incl. references)
- Skills in repo
- 1,348
- Repo updated
- First seen
- Licence
- MIT
At a glance
Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness.
- Works in 5 steps: Definitions — every undefined or loosely… → Obligations vs. aspirations — "shall" is… → Silence — what the contract fails to say… → …
- Someone says read this like opposing counsel
- SKILL.md covers What This Skill Produces, Required Inputs, The Adversary's Method and Output Format, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Opposing Counsel is an agent skill from mohitagw15856/pm-claude-skills. Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness. Use when someone says 'read this like opposing counsel', 'how would the other side attack this agreement', 'find the weaknesses before they do', or before sending or signing any contract. Produces the demand/position letter opposing counsel would actually send, plus an out-of-character debrief with the clause fixes that defang each attack.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/worked-example.md`).
It sits in Legal & Compliance, covering Contract review. The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.
When your agent uses it
- Someone says read this like opposing counsel
- How would the other side attack this agreement
- Find the weaknesses before they do
- Signing any contract
Example prompts
- “read this like opposing counsel”
- “how would the other side attack this agreement”
- “find the weaknesses before they do”
- “/opposing-counsel”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Definitions — every undefined or loosely defined term is an argument we get to win
- Obligations vs. aspirations — "shall" is enforceable; "will endeavour to" is decoration; find what your client promised that mine didn't
- Silence — what the contract fails to say (IP ownership, data, subcontracting, survival) is where we build our position
- Asymmetries — termination, liability caps, indemnities, cure periods: wherever the drafting favours my client, we press
- Procedure traps — notice requirements, deadlines, forum: technicalities that void your remedies
What it can do on your machine
Read from SKILL.md and the folder at commit 1cbf1f0. 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
Opposing Counsel loads about 1.1k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 113 tokens; SKILL.md has 568 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 mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 568 words, ~1,108 tokens.
Download SKILL.mdSave it as
.claude/skills/opposing-counsel/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- opposing-counsel
- description
- Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness. Use when someone says 'read this like opposing counsel', 'how would the other side attack this agreement', 'find the weaknesses before they do', or before sending or signing any contract. Produces the demand/position letter opposing counsel would actually send, plus an out-of-character debrief with the clause fixes that defang each attack.
Opposing Counsel
A friendly contract review asks "is this fair?". Opposing counsel asks "where does this bleed?". This skill reads the agreement as the counterparty's lawyer — paid to find ambiguity, missing protections, and unenforceable optimism — and writes the letter they would send when the relationship sours. (For the friendly review, use contract-review; this skill only attacks.)
What This Skill Produces
- A weakness map: every exploitable clause, ranked by severity
- The artifact: the actual demand/position letter opposing counsel would send, in character
- A debrief out of character: the clause-level fixes that would defang each attack, ranked by urgency
Required Inputs
Ask for these if missing; work with a thin brief but label every assumption:
- The contract or agreement text (or the clauses in dispute)
- Which side the user is on and what they most need the contract to protect
- The likely dispute scenario (non-payment, scope fight, IP claim, termination) — if unknown, attack the three most probable
- Optional: governing law, deal value, what has already gone wrong
The Adversary's Method
Read as counsel for the other side, in this order:
- Definitions — every undefined or loosely defined term is an argument we get to win
- Obligations vs. aspirations — "shall" is enforceable; "will endeavour to" is decoration; find what your client promised that mine didn't
- Silence — what the contract fails to say (IP ownership, data, subcontracting, survival) is where we build our position
- Asymmetries — termination, liability caps, indemnities, cure periods: wherever the drafting favours my client, we press
- Procedure traps — notice requirements, deadlines, forum: technicalities that void your remedies
Severity scale for each finding: ☠️ Exploitable now (a letter goes out today) · ⚠️ Exploitable in a dispute (leverage once things sour) · 🛡 Holds (well drafted; say so).
Output Format
The Weakness Map
Table: clause/section | what opposing counsel sees | severity (☠️/⚠️/🛡) | the argument they'd run, quoting the contract's own words.
The Letter (in character)
The demand or position letter opposing counsel would send — on-letterhead tone, formal, citing specific clauses, making specific demands with deadlines. Ruthless but professional; the kind that arrives on a Friday. Include this line in the artifact: "Simulation — a plausible adversarial reading, not a prediction or legal/financial advice."
Show full SKILL.md (211 more words)Show less
Debrief — out of character
Drop the persona entirely. For each ☠️ and ⚠️ finding: the specific clause language fix (redline-ready wording where possible), what it costs to ask for, and which fixes matter most if only three are negotiable. End with the single change that removes the most leverage.
Quality Checks
- Every attack quotes or cites the contract's actual language — no generic contract-law boilerplate
- At least one clause earns 🛡 — an all-kill review means the reading was lazy, not forensic
- The letter makes specific demands with dates, not vague threats
- Each debrief fix is redline-ready wording, not "tighten this clause"
- Missing protections are named as findings — silence is the biggest weakness
- The simulation disclaimer line appears in the artifact
Anti-Patterns
- Do not pull punches — a flattering simulation is worthless
- Do not invent facts not in the input; attack what's there and name what's missing
- Do not stay in character in the debrief — the letter frightens, the debrief fixes
- Do not present this as legal advice — it is a stress test to bring to a qualified lawyer
- Do not attack both sides — opposing counsel has one client and it is not the user
Example Trigger Phrases
- "Read this like opposing counsel."
- "How would the other side attack this agreement?"
- "Find the weaknesses before they do."
© mohitagw15856, MIT. 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 1 other file (references) in skills/opposing-counsel of mohitagw15856/pm-claude-skills.
- SKILL.md
- references/worked-example.md
Open the folder on GitHubat commit 1cbf1f0
Compare with similar skills
Opposing Counsel 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 |
|---|---|---|---|---|---|---|
| Opposing Counsel this skillmohitagw15856/pm-claude-skills | 1.4k | — | ~1.1k | Automated safety check: Pass | MIT | |
| 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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Related
Categories
Questions about Opposing Counsel
What does Opposing Counsel do?
Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness. Opposing Counsel is an agent skill from mohitagw15856/pm-claude-skills. Read a contract the way the counterparty's lawyer will — hunting for leverage, not fairness.
When should I use Opposing Counsel?
Opposing Counsel fits situations like: someone says read this like opposing counsel; how would the other side attack this agreement; find the weaknesses before they do; signing any contract.
How do I install Opposing Counsel in Claude Code?
Run `npx skills add mohitagw15856/pm-claude-skills --skill opposing-counsel -a claude-code`. Or copy the skill folder (skills/opposing-counsel in mohitagw15856/pm-claude-skills) into .claude/skills/opposing-counsel in your project. Claude Code loads it when a task matches its description.
How do I install Opposing Counsel in Codex?
Run `npx skills add mohitagw15856/pm-claude-skills --skill opposing-counsel -a codex`. Or copy the skill folder (skills/opposing-counsel in mohitagw15856/pm-claude-skills) into .agents/skills/opposing-counsel in your project. Codex loads it when a task matches its description.
Can I use Opposing Counsel 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 mohitagw15856/pm-claude-skills --skill opposing-counsel -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/opposing-counsel, .gemini/skills/opposing-counsel, .github/skills/opposing-counsel and .opencode/skills/opposing-counsel in your project.
What does Opposing Counsel need to run?
SKILL.md names no scripts, command-line tools or credentials: Opposing Counsel is instructions for the agent only.
Does Opposing Counsel 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 Opposing Counsel 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 Opposing Counsel use?
Opposing Counsel is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Opposing Counsel use?
About 1.1k tokens (SKILL.md is roughly 4.4k 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 1.1k tokens, read only when the agent opens those files.
What are the alternatives to Opposing Counsel?
Skills that share tags, products or a category with Opposing Counsel: 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 Opposing Counsel?
mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.
Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.