WhatsApp chatbot for lawyers: how to use one without breaking OAB rules

WhatsApp has become the firm's front door: it's where the client asks the first question, sends a document, and chases an update. The problem is a lawyer doesn't live on their phone — they're in a hearing, drafting a filing, or with another client. A WhatsApp chatbot for lawyers solves that mismatch, replying instantly and organizing intake, without turning the firm into a telemarketing center. In this guide, you'll see what a legal chatbot is for (and isn't for), how to use one within the limits of the Code of Ethics and the Brazilian bar association's (OAB) Provimento 205/2021, and what it should actually do in practice.

What a legal chatbot really does

Forget the idea of a robot that "sells legal services" — besides being ineffective, that runs into professional ethics rules. A chatbot's legitimate role at a law firm is support and organization, not commercialized client solicitation. In practice, it:

• Replies instantly, even after hours, to anyone arriving through the website, a business card, or a referral;
• Runs the initial intake: identifies the practice area (labor, family, civil, criminal) and the topic;
• Collects basic information and a case summary before the lawyer steps in;
• Books the consultation or routes it to the right professional at the firm;
• Answers recurring questions from already-active clients (case status, documents, hours).

The gain is direct: instead of the lawyer opening WhatsApp and finding 30 messages jumbled together, they get each case already classified and summarized. The time saved goes back to what only they can do — practicing law.

Chatbots for lawyers and the OAB: what's allowed and what isn't

Here's the point most articles skip. Legal advertising in Brazil is regulated — the OAB's Provimento 205/2021 and the Code of Ethics allow informational advertising and prohibit client solicitation and commercialization. A well-configured chatbot naturally respects this, as long as you observe a few precautions:

• Allowed: serving people who already reached out to the firm, informing them of practice areas, booking consultations, answering active clients' questions, organizing intake.
• Should avoid: aggressive sales language, promises of results ("guaranteed win"), actively soliciting people who didn't reach out, unsolicited bulk messages with a commercial tone.
• Watch your data (data protection): clients share sensitive information. Make it clear the data is used only for support and handle it under confidentiality.

In other words: the chatbot is a support tool, and that's what keeps it within ethical bounds. Configured with restraint, it helps the client and protects the firm.

How to set up the firm's automatic support

A good flow for a law firm usually follows this design:

1. Welcome + practice area identification.

   Hi! You've reached [Name] law firm. To route your case correctly, tell me: is your matter labor, family, civil, or something else?

2. Case intake. Depending on the area, the bot asks 2 or 3 objective questions to understand the situation — without giving legal guidance, just gathering context.

3. Booking or routing. With the case classified, the bot offers consultation times or lets the person know the responsible lawyer will follow up.

4. Handoff to a human. The case reaches the lawyer (or the right department) already with the area, summary, and details — ready for the real conversation.

The detail that makes the difference: the bot doesn't give legal opinions. It organizes and schedules. Guidance always comes from the lawyer. That's both ethical and what the client expects.

AI chatbot vs. menu of options

There are two levels of "chatbot":

• Button menu: the client picks from fixed options (1 – Labor, 2 – Family...). Simple, but rigid.
• AI agent: understands what the person wrote in natural language, runs the intake like a conversation, and summarizes the case. Much closer to human support.

On CRPRO, Cris, the AI agent, runs intake conversationally: asks the practice area, understands the client's account, and hands the lawyer the case already in context — answering the first contact in seconds, at any hour. For firms with a team (lawyers, interns, front desk), there's also multi-agent support: everyone works from the same official number, with no phone passed hand to hand.

If you want to go deeper into using WhatsApp specifically in a legal practice's routine, also see the WhatsApp CRM for lawyers page.

Why use Meta's official API (and not a workaround)

A law firm handles confidential information. Unofficial tools that "automate" WhatsApp on the side violate Meta's terms and put the number at risk of a ban — imagine losing WhatsApp along with the history of every client. CRPRO connects support through the official WhatsApp Business API (Meta), which keeps the number safe and support within the rules. It's the foundation a serious operation needs.

Frequently Asked Questions

Is a chatbot for lawyers allowed by the OAB?

Yes, as long as it's used as a support and information tool, not for commercialized client solicitation. Provimento 205/2021 allows informational advertising and prohibits promises of results, commercialization, and client solicitation. A chatbot that supports, screens, and books — without selling or promising — stays within ethical bounds.

Can the chatbot give the client legal guidance?

It shouldn't. The bot's role is to organize and route; legal guidance is an act reserved for the lawyer. Set up the flow to collect the case and book appointments, leaving the opinion always with the professional.

Do I need the WhatsApp Business API to have a chatbot at the firm?

For serious, team-based, secure support, yes. Unofficial tools risk the number getting banned. CRPRO uses Meta's official API, which protects the number and enables multi-agent support and automation within the rules.

How much does a WhatsApp chatbot for lawyers cost?

On CRPRO, the plan with AI (CR Pro IA, which includes the agent Cris) costs R$ 499.90/month; there's also CRPRO at R$ 249.90/month and CRPRO Start at R$ 99/month, both without AI. Agents are unlimited on all three plans. You can try it for 7 days with no card required.

Start with intake

The biggest gain for a firm isn't "selling on autopilot" — it's never leaving a client without a reply again and receiving every case already organized. Set up a simple intake flow by practice area, define what the bot asks and where it routes cases, and always keep guidance with the lawyer. To do this with AI, an official number, and your whole team in one place, create your account and try CRPRO free for 7 days — no credit card.