class-certification-motion
Drafts a Motion for Class Certification under FRCP 23 or state equivalents, arguing numerosity, commonality, typicality, adequacy, predominance, and superiority from case materials. Use when drafting class certification motions, seeking class treatment, or preparing Rule 23 briefing in discovery or pre-trial phases.
Best use case
class-certification-motion is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Drafts a Motion for Class Certification under FRCP 23 or state equivalents, arguing numerosity, commonality, typicality, adequacy, predominance, and superiority from case materials. Use when drafting class certification motions, seeking class treatment, or preparing Rule 23 briefing in discovery or pre-trial phases.
Teams using class-certification-motion should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/class-certification-motion/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How class-certification-motion Compares
| Feature / Agent | class-certification-motion | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Drafts a Motion for Class Certification under FRCP 23 or state equivalents, arguing numerosity, commonality, typicality, adequacy, predominance, and superiority from case materials. Use when drafting class certification motions, seeking class treatment, or preparing Rule 23 briefing in discovery or pre-trial phases.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# Motion for Class Certification Produces a plaintiff-side FRCP 23 (or state equivalent) class certification motion grounded in case-file evidence and structured for rigorous judicial scrutiny. ## Prerequisites 1. Pleadings — complaint, answer, amended pleadings 2. Discovery materials — interrogatories, document productions, RFAs, defendant's business records showing scope of conduct 3. Expert reports — damages models, class-wide proof methodology, statistical analyses 4. Deposition transcripts — named plaintiff(s), corporate designees, key witnesses 5. Named plaintiff declaration — representative-role understanding, absence of conflicts 6. Class counsel qualifications — CV/firm resume, prior class action experience, resources ## Quick Start 1. Review case materials and identify the uniform policy/practice at issue 2. Draft a precise, administrable class definition tied to the liability theory 3. Build Rule 23(a) arguments from discovery evidence 4. Select and brief the applicable Rule 23(b) subsection 5. Propose notice/administration plan and case management approach 6. Preempt anticipated defense arguments with record citations ## Core Workflow ### 1. Introduction (1–2 pages) State defendant's specific misconduct, proposed class definition (temporal/geographic scope), approximate class size, common injury, and why joinder is impracticable. ### 2. Class Definition The definition must: - Track the liability theory (not merits outcomes) - Be administratively manageable via objective criteria - Specify dates corresponding to period of misconduct - Match geographic scope to defendant's conduct and applicable law - Require no individualized inquiry for membership ### 3. Rule 23(a) Prerequisites **Numerosity** — Cite defendant's records, discovery data, or expert estimates. Address geographic dispersion and economic infeasibility of individual suits. For negative-value claims, show individual recovery < litigation costs. **Commonality** — Apply *Wal-Mart v. Dukes*, 564 U.S. 338 (2011): identify common questions generating common answers. Focus on uniform policies, standardized contracts, common course of conduct. Distinguish substantial common questions from peripheral individual ones. **Typicality** — Show named plaintiff suffered the same injury type through the same mechanism. Cite specific evidence. Address unique-defense arguments; distinguish damages quantum from liability theory. **Adequacy** — Named plaintiff: case knowledge, commitment, no conflicts. Class counsel: prior class actions, results, judicial recognition, resources, co-counsel arrangements. ### 4. Rule 23(b) Analysis Select the applicable subsection: | Subsection | Standard | Key Proof | |---|---|---| | 23(b)(3) | Predominance + superiority | Common evidence per claim element; common damages methodology; superiority over alternatives | | 23(b)(2) | Generally applicable conduct | Uniform injunctive/declaratory relief; address whether monetary claims are incidental | | 23(b)(1)(A) | Inconsistent obligations risk | Separate actions would impose contradictory requirements | | 23(b)(1)(B) | Impaired interests risk | Individual adjudications would practically dispose of absent members' claims | **For 23(b)(3) predominance**, analyze element-by-element: 1. Identify common proof method for each claim element 2. Show common damages methodology — distinguish amount variation (acceptable) from methodology variation (problematic) 3. Integrate expert findings on class-wide proof feasibility 4. Address reliance/causation through presumptions or burden-shifting frameworks **For superiority**: economics of individual claims vs. litigation costs, inconsistent-adjudication risk, concentration benefits, existing individual litigation. ### 5. Notice and Administration Plan - Identification method from defendant's records - Plain-language notice (lawsuit nature, class definition, opt-out rights, binding effect) - Distribution methods (direct mail, email, publication, digital) with justification - Cost estimates and allocation - Claims administration process ### 6. Case Management Proposal Address as applicable: liability/damages bifurcation, bellwether trials, statistical sampling, special master appointment, subclass structure. ### 7. Anticipatory Defense | Defense Argument | Response Strategy | |---|---| | Individual issues predominate | Common proof resolves core liability; individual damages manageable post-certification | | Class unmanageable | Propose specific tools: bifurcation, sampling, special master | | Named plaintiff atypical/inadequate | Distinguish damages variation from liability-theory divergence | | Class definition overbroad | Definition tracks liability theory with objective, administrable criteria | | Ascertainability problems | Objective identification from defendant's own records | | Subclass conflicts | Aligned interests on core liability; propose subclasses only if necessary | ### 8. Conclusion Restate class definition, specify requested relief (certify class, appoint representative, appoint counsel), reference notice plan and case management procedures, request hearing if warranted. ## Pitfalls and Checks - **Pinpoint citations required** — every factual assertion must cite document name, page, paragraph, exhibit number. No document-level references. - **Jurisdiction-specific standards** — circuits vary on predominance, ascertainability, and merits scrutiny. Identify and apply controlling precedent. - **Certification ≠ summary judgment** — present enough merits evidence for certification without fully litigating the merits. - **FRE 702 / Daubert-Frye** — ensure expert methodology survives reliability challenge under the applicable standard. - **Adverse authority** — distinguish unfavorable cases as factually distinguishable, superseded, or inapposite. Never ignore them. - **Tone** — professional, confident, evidence-driven. No hyperbole. - **Length** — 25–50 pages depending on complexity and local rules. ---
Related Skills
managing-range-of-motion-assessments
Documents goniometric measurements with active/passive ROM and comparison to normative values. Use when measuring joint ROM, documenting mobility assessments, or tracking ROM progress.
classifying-imaging-findings
Applies standardized classification systems (BI-RADS, LI-RADS, TI-RADS, Lung-RADS, PI-RADS) to imaging findings. Use when categorizing imaging findings, applying RADS classifications, or determining follow-up recommendations.
summary-judgment-motion
Drafts a Motion for Summary Judgment package for personal injury litigation under FRCP 56 or state equivalent. Trigger when the user needs an MSJ, summary judgment brief, dispositive motion, no-genuine-dispute motion, or judgment-as-a-matter-of-law motion during pre-trial or discovery phases.
stay-relief-motion
Drafts a Motion for Relief from Automatic Stay under 11 U.S.C. § 362(d). Covers § 362(d)(1) cause/adequate protection, (d)(2) no equity/not necessary, and (d)(3) single asset real estate grounds. Use when a creditor needs to lift the automatic stay to foreclose, repossess collateral, or continue state court litigation against a debtor in bankruptcy.
motion-to-dismiss
Drafts FRCP 12(b) motions to dismiss for commercial litigation. Triggers on requests to draft motions to dismiss, 12(b)(6) motions, jurisdictional challenges, venue motions, or pre-answer dispositive motions during the pleadings phase.
motion-to-dismiss-indictment
Drafts motions to dismiss criminal indictments in federal and state courts. Covers defective indictments, statute of limitations, speedy trial, double jeopardy, prosecutorial misconduct, and jurisdictional defects. Use when the agent needs to challenge the legal sufficiency of criminal charges or draft a pre-trial dismissal motion.
motion-to-convert
Drafts a Motion to Convert Case for bankruptcy proceedings under 11 U.S.C. §§ 706, 1112, or 1307. Builds caption, factual background, statutory arguments, and prayer for relief from case documents. Use when the user needs a bankruptcy conversion motion between chapters (e.g., Chapter 7 to 13 or vice versa).
motion-to-compel
Drafts filing-ready motions to compel discovery in civil litigation with deficiency matrix, declaration, memorandum, and proposed order. Covers interrogatories, RFPs, RFAs, depositions, and ESI disputes under federal FRCP and state analogs. Includes Rule 37(a)(5) sanctions strategy and meet-and-confer certification. Use when drafting a motion to compel, addressing boilerplate objections, seeking discovery sanctions, or preparing discovery dispute briefing.
motion-to-avoid-lien
Drafts a Motion to Avoid Lien under 11 U.S.C. § 522(f) for bankruptcy proceedings. Produces a litigation-ready motion with caption, impairment calculations, legal argument, and prayer for relief. Use when filing lien avoidance motions in Chapter 7, 11, or 13 cases, stripping judicial liens or nonpossessory nonpurchase-money security interests that impair debtor exemptions.
motion-new-trial
Drafts a post-verdict Motion for New Trial in criminal defense cases. Structures arguments around recognized grounds (weight-of-evidence, newly discovered evidence, prosecutorial misconduct, juror misconduct, IAC, judicial error) with record citations. Use when filing a motion for new trial, post-conviction motion, or requesting the court set aside a criminal verdict.
motion-in-limine
Drafts criminal defense motions in limine to exclude prejudicial, irrelevant, or inadmissible evidence before trial. Covers FRE 401-403 relevance/prejudice, FRE 404(b) character/prior-acts, FRE 801-807 hearsay, and FRE 702-703 expert testimony. Use when drafting pre-trial exclusion motions, evidentiary objection briefs, or motions to preclude testimony in criminal defense matters.
motion-for-temporary-relief
Drafts a Motion for Temporary Relief (Pendente Lite) in U.S. family law cases seeking interim orders for custody, support, property use, and fees. Use when filing for temporary orders at the outset of a dissolution, separation, or custody matter to stabilize rights and obligations during pendency.