Why Claude, and Why Now
You have options. ChatGPT is the most famous. Gemini is the fastest. Copilot is in the office suite you already own. For most lawyers most of the time, I recommend Claude — for three reasons that matter to a practitioner.
- Long context. The 200-page transcript, the 400-page financial production, the full Ohio Revised Code chapter — it does not flinch.
- Citation discipline. When prompted correctly, Claude refuses to fabricate. For a lawyer, that refusal is a feature.
- Anthropic's ethics posture. The vendor's own governance becomes part of your governance.
- Opus (Court / Client)
- Sonnet (Internal)
- Haiku (Triage)
Setup & the Lawyer's Privacy Stack
Setup is not setup. For a lawyer, setup is the first ethics decision. The default onboarding will ask whether you allow Anthropic to train on your conversations. Turn this off. There is no scenario where a practicing attorney should leave it on.
Model Selection for Legal Work
Claude ships in three active sizes — Opus, Sonnet, Haiku. Picking the wrong one is the most common mistake I see. Lawyers either burn Opus credits on tasks Haiku could handle, or they use Haiku on a dispositive motion and wonder why the output is thin.
| Task | Model | Why |
|---|---|---|
| Dispositive motion drafting | Opus | Deep reasoning, nuanced argument |
| Appellate brief synthesis | Opus | Multi-source integration, citation discipline |
| Settlement memorandum | Opus | Client-facing, stakes high |
| Discovery response (1st pass) | Sonnet | Volume work, structured output |
| Deposition outline | Sonnet | Long context, predictable structure |
| Client intake summary | Sonnet | Clear inputs, clean format |
| Email triage | Haiku | Speed, brevity, cost |
| Template letter fills | Haiku | Mechanical substitution |
Why Structured Blocks Beat Prose
Most lawyers prompt Claude the way they write emails to a paralegal — conversational, context-heavy at the front, buried instructions in the middle, the actual deliverable mentioned in a P.S. This works sometimes. It fails when the matter is complex.
The Meta Prompt Method replaces that with named structured blocks. Think of it as the difference between a rambling voicemail and a written research memo assignment.
- · Conversational opener
- · Context scattered
- · Task buried in middle
- · Rules in a P.S.
- · Format implicit
- · ROLE: explicit
- · CONTEXT: labeled
- · TASK: one sentence
- · CONSTRAINTS: hard rules
- · FORMAT: exact shape
- · REFERENCE: labeled inputs
The Meta Prompt Anatomy
Six blocks, in this order. Order matters. Claude reads linearly: foundational framing must come before the task, and rules must come before the shape of the output.
The canonical example — modify spousal support
<ROLE> You are a senior Ohio domestic relations attorney preparing a motion to modify spousal support. </ROLE> <CONTEXT> Client: Obligor husband. Paying spousal support under a 2019 decree. Original monthly obligation $2,500. Client involuntarily terminated from employment in February 2026. New employment obtained at 40% reduced compensation. Jurisdiction: Lorain County Court of Common Pleas, Domestic Relations Division. </CONTEXT> <TASK> Draft a Motion to Modify Spousal Support with supporting memorandum. </TASK> <CONSTRAINTS> Ohio state law only. Cite R.C. 3105.18 as the controlling modification statute. Identify and apply the substantial change of circumstances standard. Case names in italics. Full Bluebook. No hyphens, no em dashes. Do not invent case citations. If a supporting case is needed and you are not certain of it, flag that with a bracketed [VERIFY: SECOND SOURCE] note. </CONSTRAINTS> <FORMAT> 1. Caption block (party names bracketed for fill) 2. Motion heading 3. Memorandum in Support a. Introduction b. Factual Background c. Law and Argument d. Conclusion 4. Certificate of Service placeholder </FORMAT>
Using Claude to Build Your Own Prompts
The best prompt engineer for your firm is Claude itself. The meta-prompting loop turns a fuzzy intent into a production-grade structured block in three to five iterations.
The meta-prompt seed
<ROLE> You are a prompt engineer specializing in legal practice workflows. You write prompts in the Mishak Law Meta Prompt Method: ROLE, CONTEXT, TASK, CONSTRAINTS, FORMAT, REFERENCE. </ROLE> <TASK> I need a reusable prompt for the following recurring task: [DESCRIBE TASK IN ONE PARAGRAPH]. Draft the structured block prompt. Where I would need to paste matter-specific facts, use [BRACKETED PLACEHOLDERS]. After the prompt, list three critique questions I should answer to tighten it further. </TASK> <CONSTRAINTS> Ohio practice. Full Bluebook. Case names italics. No invented citations. Output the prompt inside a code block. </CONSTRAINTS>
Projects as Matter Workspaces
Projects are the single most underused feature in Claude for lawyers. A Project is a matter file. Persistent instructions, uploaded files, a conversation history — all scoped to one container.
[PracticeArea] [Client Last Name] [Matter Short Name]. A domestic relations matter for the Marcum family becomes DR Marcum Divorce. Trivial intake, conflict checks, and archiving.Project Instructions template
<ROLE> You are co-counsel on this matter. Junior but sharp. Your job is to help me draft, research, and think through issues in this case. </ROLE> <CONTEXT> Matter: [Case caption] Jurisdiction: [Court and division] Client: [Name, role in case] Practice area: [DR / PI / Criminal] Key issues: [2-3 bullet points] Our theory: [1-2 sentences] </CONTEXT> <CONSTRAINTS> Treat all matter facts as confidential and privileged. All legal citations in full Bluebook, Ohio state level when available. Case names in italics. No hyphens or em dashes. URLs go in an appendix, not inline. </CONSTRAINTS>
Artifacts for Drafting
Artifacts are Claude's persistent draft pane. They live alongside the conversation, version automatically, and survive iteration without losing your prior work. If you will paste it into Word or file it, generate it as an Artifact.
Skills as Codified SOPs
A Skill is a packaged set of instructions Claude activates when a prompt matches its trigger. For lawyers, a Skill is a codified standard operating procedure. Once written, every Affidavit One, every demand letter, every QDRO follows the same shape forever.
Example trigger frontmatter — Ohio Affidavit One
--- name: Ohio Affidavit One description: Use whenever the user asks for an Ohio domestic relations Affidavit of Income and Expenses (Affidavit One) for a divorce, dissolution, or post-decree matter. --- You are drafting an Ohio Affidavit One. Pull income from W2s and paystubs in the Project. Pull expenses from the client's budget worksheet. Use the official Lorain County form layout in /reference/affidavit-one-form.md. Round all figures to the nearest dollar. Mark every unverified entry with [CONFIRM].
Connectors and MCP
Connectors (built on the Model Context Protocol) let Claude reach into Google Drive, GitHub, calendars, search, and other systems. For a firm, this is where governance gets real. Default to denying every connector. Allow only what a specific matter requires, document the permission, and audit quarterly.
- · Read-only access to a single matter folder
- · Public web search (with verification)
- · Calendar read for scheduling
- · Write access to client files
- · Email send on lawyer's behalf
- · Banking, payment, or trust account systems
- · Any cross-matter data access
Memory, PII, and When to Turn It Off
Claude's Memory feature lets the model remember facts about you across conversations. For a lawyer, this is a category-five ethical hazard. Memory is a backdoor into the cross-matter data leakage that RPC 1.6 is designed to prevent.
Extended Thinking
Extended Thinking gives Claude additional inference time to reason through a problem before answering. It is slower and costs more. For most prompts, leave it off. For three categories, turn it on.
- Suppression motions and other close pretrial work where the legal theory must be airtight.
- Settlement memorandum drafting when the matter has competing valuations and counterarguments.
- Final decree assembly where every clause must reconcile with every other clause.
Personal Injury Workflow
The four-step PI matter arc, intake to demand. Total time on a clean matter: under two hours from raw intake notes to a demand letter ready for attorney review.
Step 4 — Demand Letter prompt
<ROLE> You are a senior Ohio personal injury attorney drafting a pre-suit demand letter to the adverse insurer. </ROLE> <TASK> Draft a complete demand letter to [ADJUSTER NAME AND CARRIER] using the Matter Summary, Treatment Chronology, and Damages Analysis already in this Project. Produce the letter as an Artifact. </TASK> <CONSTRAINTS> Ohio state law. Reference R.C. 2305.10 (statute of limitations) only if timing warrants. Professional tone. Firm but not aggressive. No threats beyond "we are prepared to file suit if a reasonable resolution is not reached." Present the demand as the recommended midpoint from the Damages Analysis. </CONSTRAINTS> <FORMAT> 1. Letterhead block (placeholder) 2. Date 3. Adjuster and carrier address block 4. Subject: Re: Our Client, [CLIENT]; DOL [DATE]; Your Insured, [DEFENDANT]; Claim No. [NUMBER] 5. Opening paragraph (liability in two sentences) 6. Facts of the Collision 7. Injuries and Treatment 8. Economic Damages (itemized) 9. Non-Economic Damages 10. Settlement Demand ($ figure) 11. Response deadline (30 days) 12. Closing 13. Enclosures list </FORMAT>
Criminal Defense Workflow
From discovery receipt to motion to suppress. Hypothetical: client charged with OVI under R.C. 4511.19, Lorain Municipal Court. Theory: marked-lanes stop unsupported by reasonable suspicion; extension into OVI investigation unsupported by independent reasonable suspicion.
Step 1 — Discovery Issues Memo
<ROLE> You are a senior Ohio criminal defense attorney with particular experience in OVI suppression litigation. </ROLE> <TASK> Review all discovery in this Project and produce a Discovery Issues Memo. </TASK> <CONSTRAINTS> Ohio law. Fourth Amendment analysis. Cite rules of criminal procedure by number (Crim. R.). Cite R.C. provisions in full. Case names in italics. Full Bluebook. If you identify a potential suppression issue but cannot recall a specific controlling Ohio case, flag with [VERIFY: CONTROLLING OHIO AUTHORITY] and describe the legal principle. Do not invent citations. </CONSTRAINTS> <FORMAT> 1. Stop Analysis (RS for initial stop · supporting/undermining evidence · suppression issue yes/no/maybe) 2. Duration Analysis (Rodriguez-line issues · independent RS) 3. Field Sobriety Tests (NHTSA compliance · HGN, WAT, OLS) 4. Chemical Test (BMV 2255, calibration, observation period) 5. Statements by Client (Miranda analysis if any) 6. Recommended Motions 7. Additional Discovery to Request </FORMAT>
Domestic Relations Workflow
The deepest practice area for Mishak Law and the area LegalTek.ai was built to serve. The full matter arc, not just a single deliverable, structured around the Five Pillars: grounds, property division, spousal support, parental rights, child support.
Step 1 — Matter Strategy Memo
<ROLE> You are a senior Ohio domestic relations attorney with twenty years of experience. </ROLE> <TASK> Review the intake notes and produce a Matter Strategy Memo. </TASK> <CONSTRAINTS> Ohio R.C. Chapter 3105 framework. Identify the five pillar issues: grounds, property division, spousal support, parental rights and responsibilities, and child support. For each pillar, give a preliminary analysis, note the evidence we will need, and flag any issue that justifies urgent action (ex parte TROs, emergency custody orders, asset preservation). </CONSTRAINTS> <FORMAT> 1. Executive Summary (5 bullets) 2. Grounds Analysis 3. Property Division 4. Spousal Support (R.C. 3105.18 factors) 5. Parental Rights (R.C. 3109.04 best interest) 6. Child Support (R.C. 3119 framework) 7. Urgent Actions 8. Evidence and Discovery Plan 9. Estimated Timeline 10. Client Counseling Points </FORMAT> <REFERENCE MATERIAL> [PASTE INTAKE NOTES HERE] </REFERENCE MATERIAL>
- Before Claude
- With Claude + Meta Prompt
Claude Code for Lawyers
Claude Code is the terminal interface that lets you turn a repetitive task into an automated tool. You do not need to be a developer. You need to be able to write a one-page plain-English specification.
Iteration: Prompt → Skill → Tool
Every workflow in this guide follows the same maturation arc. Today's structured prompt becomes next quarter's Skill becomes next year's tool. The pattern is universal.
The error most firms make: jumping straight to Step 5. Build to Step 3 first. Most firm value is unlocked there. Step 5 is for the workflows you have proven through Step 3 for at least a quarter.
When Claude Gets It Wrong
Four failure modes you must train yourself to spot:
Six-step response
- STOP. Do not file or send anything containing the suspect content.
- Assess scope. Filed? Served? Sent to a client? Internal only?
- Correct the record where you can — motion to amend, corrective letter, candid call.
- Notify court, opposing, and client per RPC 3.3.
- Document the incident under G3M Measurement.
- Review the prompt. Tighten CONSTRAINTS. Add the reference material.
ABA Formal Opinion 512 & Ohio RPC
ABA Formal Opinion 512 (July 2024) is the first comprehensive guidance on lawyers' use of generative AI. Six duties, mapped cleanly to the Ohio Rules of Professional Conduct.
The LegalTek.ai Framework Stack
Four frameworks, stacked vertically. A lawyer runs COUNSEL at the task level. Output passes through OVRST before it leaves the firm. The firm runs G3M as an institution. New tools enter through ADAPT.
Copy-Paste Prompt Library
Three high-leverage prompts to get started. Paste, fill in your matter specifics, run.
A1. Universal House Style CONSTRAINTS Block
Ohio state law primary. Full Bluebook citations. Case names in italics, never bold. Ohio state-level citations preferred when available. URLs go in an Appendix, never inline. Do not invent citations. Flag single-source citations with [VERIFY: SECOND SOURCE]. No hyphens, no em dashes, use commas or periods. Do not use "leverage" as a verb. Professional, formal register. If a fact is not in the reference material, do not assume it.
A2. New Client Intake Summary
<ROLE> You are a senior paralegal at [FIRM NAME] with deep experience in [PRACTICE AREA] intakes. </ROLE> <TASK> Convert the intake notes below into our standard Matter Summary. </TASK> <CONSTRAINTS> [Paste A1]. Preserve every fact from the notes. Mark anything silent as "Not yet known." </CONSTRAINTS> <FORMAT> 1. Parties and Contacts 2. Matter Type and Posture 3. Key Facts 4. Theory of the Case (preliminary) 5. Immediate Actions Required 6. Open Items </FORMAT> <REFERENCE MATERIAL> [PASTE NOTES] </REFERENCE MATERIAL>
A3. Settlement Offer Analysis
<ROLE> You are advising me on whether to accept, reject, or counter an incoming settlement offer. </ROLE> <TASK> Produce a Settlement Offer Analysis Memo. </TASK> <CONSTRAINTS> [Paste A1]. Compare the offer against the best case, worst case, and expected value ranges from the Matter Strategy Memo. Factor in litigation costs, time value, client circumstances, and collection risk. </CONSTRAINTS> <FORMAT> 1. Offer summary (one paragraph) 2. Comparison to case valuation 3. Cost to proceed analysis 4. Non-financial factors 5. Recommendation (accept, counter, reject) with specific counter if applicable 6. Client counseling points </FORMAT>
Ready to operationalize this in your firm?
The COUNSEL Framework is the firm-wide companion to this guide. It gives you the policy templates, intake protocols, and AI vendor due-diligence checklists referenced throughout.
About the Author
Matthew A. Mishak is the Managing Attorney of Mishak Law LLC, where he has practiced for twenty years across domestic relations, criminal defense, and municipal law, including service as Chief Prosecutor. He is the Founder and CEO of LegalTek.ai LLC. His AI education includes the MIT Sloan executive program on AI Implications for Business Strategy, the MIT CSAIL applied AI program, and the Harvard Business School Online AI Essentials for Business program.
This guide is for general informational and educational purposes. It is not legal advice. It does not create an attorney-client relationship. Legal authorities flagged in bracketed notes require verification against independent sources before citation in any pleading. LegalTek.ai is a technology company, not a law firm.
