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Trace how a contract has changed across its base agreement and all amendments — either a summary of all changes over time, or a provision trace for a specific clause. Use when the user says "what changed in this contract over time", "show me the amendment history", "where's the latest [clause]", "how has [provision] evolved", or uploads multiple versions of an agreement.
Copy the install command and let the AI configure it · recommended for beginners
Please install the "amendment-history" skill from askskill: 1. Download https://raw.githubusercontent.com/anthropics/claude-for-legal/main/commercial-legal/skills/amendment-history/SKILL.md 2. Save it as ~/.claude/skills/amendment-history/SKILL.md 3. Reload skills and tell me it's ready
Loads a base agreement and all amendments, then either summarizes what changed over time or traces a specific provision to its current controlling language.
Get the documents: From file upload, [CLM ID (coming soon)], or [repository link (coming soon)]. Accept multiple files in one invocation. If none provided, ask.
Detect the mode by parsing the request per the mode detection rules below. If a provision name is clearly stated, go straight to Mode 2. If no provision is mentioned, run Mode 1. Ask only if genuinely ambiguous.
Run the workflow below. Follow it fully.
Offer follow-ups after output:
/commercial-legal:amendment-history acme-msa.pdf amendment-1.pdf amendment-2.pdf
/commercial-legal:amendment-history --provision indemnity
/commercial-legal:amendment-history
[paste agreement and amendment text]
Matter context. Check ## Matter workspaces in the practice-level CLAUDE.md. If Enabled is ✗ (the default for in-house users), skip the rest of this paragraph — skills use practice-level context and the matter machinery is invisible. If enabled and there is no active matter, ask: "Which matter is this for? Run /commercial-legal:matter-workspace switch <slug> or say practice-level." Load the active matter's matter.md for matter-specific context and overrides. Write outputs to the matter folder at ~/.claude/plugins/config/claude-for-legal/commercial-legal/matters/<matter-slug>/. Never read another matter's files unless Cross-matter context is on.
Contracts accumulate amendments. By the third amendment, nobody remembers what the original said or which version of a clause controls. This skill reads the base agreement and all amendments in chronological order and either summarizes what changed across the whole contract or traces a specific provision through every version to find the current controlling language.
Parse the user's request to determine which mode to run. Do not ask which mode unless the request is genuinely ambiguous.
Mode 1 — Summary (no specific provision mentioned) Trigger phrases: "what changed", "amendment history", "show me changes over time", "summarize amendments", "what does this contract look like now"
Mode 2 — Provision trace (specific clause or topic named) Trigger phrases: "where's the [clause]", "latest [provision]", "how did [term] change", "find the indemnity", "what does it say now about [topic]"
Common provision mappings:
If the term is ambiguous and maps to more than one provision, list the candidates and ask which one:
"I found [N] provisions related to [term] — [list them]. Which one?"
If the overall request is ambiguous between modes, ask one question:
"Summary of all changes across the contract, or trace a specific provision — like indemnity, liability, or termination?"
Accept documents from any of these sources:
[CLM integration coming soon] (if connected): Search by counterparty name or agreement title. Pull the base agreement and all amendments. Record metadata typically includes execution dates — use these to establish chronological order.
[Document repository integration coming soon] (if connected):
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Reference: review of SaaS subscription agreements with attention to the terms that matter most in subscription deals — auto-renewal mechanics, price escalation, data portability, uptime SLAs, and subprocessor rights. Loaded by /commercial-legal:review when a SaaS or subscription agreement is detected.
Drafts board or committee meeting minutes in your house format. Auto-detects upcoming board and committee meetings from your calendar, asks for the agenda and any slides or pre-read materials, and produces a complete draft in the format learned from your seed minutes. Also handles written consents in lieu of meetings. Trigger: "board minutes", "draft minutes", "upcoming board meeting", "committee minutes", "written consent", or calendar detection of an upcoming board or committee event.
Aggregate diligence findings into a deal team briefing at the right altitude for the audience — exec summary for leadership, working summary for the team. Use when user says "brief the deal team", "what's the state of diligence", "summarize findings for [audience]", "deal update", or on the briefing cadence.
Entity compliance tracker — initialize, report upcoming deadlines, update status, run health audit, export to CSV. Maintains a compliance-tracker.yaml built from the entity table, calculates filing deadlines by entity and jurisdiction, and surfaces what's due in the next 30/60/90 days. Use when user says "entity compliance", "filing deadlines", "annual reports due", "entity tracker", "what filings are due", "entity health", or "good standing".
Tabular review — one row per document, one column per data point, every cell cited to source. Built for M&A diligence ("review these 200 target contracts for change-of-control, assignment, and MAC clauses") but works for any batch review that needs a spreadsheet out the other end. Use when user says "tabular review", "review grid", "build a grid", "extract these fields from these contracts", "review these documents for X, Y, Z", "give me a spreadsheet of", "batch review", or points at a folder of documents and asks to compare them.
Review and approve (or reject) pending playbook update proposals from the playbook-monitor agent and apply approved changes to the practice profile. Use when the playbook-monitor agent has surfaced proposals, when the user says "review playbook proposals", "what playbook updates are pending", or wants to step through deviation-driven playbook changes.