Claude
Anthropic's AI assistant — reads long documents and writes alongside you.
By Thiago Lourenço Martins
An assistant that reads, writes and reasons with you
Claude is an artificial intelligence tool created by the American company Anthropic. Think of it as a very capable junior assistant: you describe what you need in plain language — "review this contract and flag the risks", "draft a fee proposal", "explain this article to me" — and it delivers the result in seconds. The key difference from a search engine: it doesn't just find information, it reasons about what you give it and produces text ready to use.
The 80-page document nobody wants to open
A vendor contract. A rival firm's filing. A procurement notice packed with technical clauses. You know you need to read it — but even starting already costs you time.
Paste the text into Claude, ask "which clauses could put me at a disadvantage?" and get a structured analysis in seconds. No need to open the entire file — and no need to depend on anyone.
Claude supports very long documents in a single conversation, setting it apart from simpler chatbots.
How people from different fields use it
Pastes a contract draft and asks: "Which clauses expose me to risk?" Gets the analysis and uses it as the basis for review. Describes facts to draft an initial filing — Claude organizes the structure and suggests the legal framing.
Needs to draft a 2-page internal policy. Describes the objective to Claude and has a formatted draft in minutes. Also uses it to summarize long email threads before making a decision.
Receives a partnership proposal in legal language and asks Claude to explain it in plain terms before taking it to an attorney. Saves consulting time.
From zero to your first document analysis
- Go to claude.ai
In your browser on desktop or mobile. Nothing to install.
- Create an account or log in
Click "Sign up" (create account) or "Log in". You can use your email or sign in with Google.
the free plan is enough to get started - Start a new conversation
On the main screen, look for the "New chat" button in the upper-left corner or the pencil icon. A new chat window will open.
- Type your request in the text field
At the bottom of the screen, there is a field where you type normally. Be direct: "Summarize this text in 5 bullet points" or "Write a formal email requesting a deadline extension."
- To attach a file, use the paperclip icon
Next to the text field, look for the paperclip (attachment) icon or a "+" icon. Select a PDF, Word, or text file. Claude will read it and respond based on its contents.
pasting text directly works equally well - Send and refine in the same conversation
Press Enter or click the send button (arrow icon). If the response is not quite right, ask for an adjustment right after: "Make it more formal" or "Cut it to 3 paragraphs." Claude keeps the conversation context.
A ready-made prompt for lawyers
You are a legal assistant. Analyze the contract below and do the following:
1. List the 5 clauses that pose the greatest risk to me (the contracting party).
2. For each clause, explain the risk in plain language — no legal jargon.
3. Suggest alternative wording that better protects my interests.
4. Note any important omission: something the contract should contain but does not.
[Paste the contract text here]
You get a structured analysis ready to use as a basis for review — without having to read the entire contract first.
Tips & real limitations
Do this
- Be specific in your request: instead of "summarize this," say "summarize in 5 bullet points for a non-lawyer client."
- If the response is not quite right, ask for adjustments in the same conversation — "make it more formal" or "cut it in half." No need to start over.
- Use Projects to separate conversations by client or topic — easy to pick up where you left off.
Real limitations
- No real-time internet access on the free plan. It does not know about recent court decisions or legislation updated last month.
- Can get specific facts wrong — case numbers, statutes, dates. Always verify specific citations in official sources before using them in a filing.
- Message limits on the free plan: once you hit the daily limit, you will need to wait until the next day or subscribe to Claude Pro.
A Portuguese-language tutorial to go further
* Independent suggestion, chosen for content quality. We have no relationship or sponsorship with the channel.
Bring a real problem to Claude right now
Take a difficult email you need to reply to or a contract clause that confused you. Paste it into Claude and ask: "How should I respond to this professionally and directly?" or "Explain this clause in plain language."
It worked if you get a clear response in under 15 seconds — and can use the result without rewriting everything from scratch.
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