Contracts.io

The other side never pays and never makes an account. Create contract.

Contracts made simple.

The simplest way to make a contract. Describe the deal and read the draft in plain language. One Send, and the other side replies and signs without making an account.

Three ways in

Describe it. Read it. Send it.

Three ways into the same field, and one set of steps after it. You press every one of them, and you read the whole contract before anybody else sees a word of it.

Type the deal the way you would say it out loud — who it is with, what is being done, what it costs. That is the field at the top of this page, and it is the same one the product opens with. The send circle only takes its colour once there is a sentence to send.

The field, with a sentence in it and send lit.

You shouldn’t need a law degree toknow what you’re signing.

Lex, counsel in every room

See it work

One sentence in. A contract out.

Thirteen seconds of the real door: one sentence typed into the field, the governing law picked, and the hand resting on Send.

Real footage of the door, captured 2026-09-02.

Redlines

Back and forth, without the back and forth.

Change one clause. Say why in a line. The other side answers on the same paper — not in a fourth attachment called final_v3.

3·Payment

The Client shall pay each undisputed invoice within thirty (30)fourteen (14) days of the invoice date. Amounts not paid when due carry interest at 1% per month, and no expense above $500 is billable without written approval in advance.

One change, proposed by the other side. Everything else in the clause stands.

The thread

  • You·sent the paper

    Thirty days to pay, the way we said it on the call.

  • The other side·proposed a change

    Thirty days doesn’t fit how we get paid. Can we make it fourteen?

Your answer

A still of the room: the answer to a proposed change is Accept or Propose a change.

Redlines go back and forth in the room. Each change is marked, each acceptance is recorded, and the version everyone is reading is the only version there is.

The tour

Everything a contract needs.

The six parts a contract is made of here, and the rule each one runs by.

  • Describe the contract.

    Describe it

    Say what you agreed the way you'd say it out loud. The draft comes back in plain language, in the order a contract is read.

  • Governing law

    Governing law

    Pick the law the deal stands under, from a list that carries every jurisdiction the app knows, each wearing its own flag. The paper then says which one it is.

  • …within thirty (30)fourteen (14) days…

    Redlines

    Change a clause and the other side answers on the same paper. Struck words, the words that replace them, and one line saying why.

  • Both in the room

    The room

    Both parties on one document at one address. Nothing is forwarded, nothing is reconciled, and nobody is reading a copy.

  • Accepted

    Not yet signed

    Accept and sign

    Two acts, never one. Agreeing to the words and putting your name to them happen separately, and the paper says which has happened.

  • Lex

    Lex

    The always-on hand on the contract: Lex drafts, marks up and explains. It does not send and it does not sign, and nothing runs until you sign in.

What is true here

What you can count on.

Four things that are true of this page right now, before you have done anything at all.

No AI at the door

Nobody is signed in on this page, so nothing you type into the field above reaches a model. Your sentence is read in your own browser, by wordlists and a handful of patterns. The model only ever reads your words once there is an account for the work to belong to.

The field is the real one

It is not a screenshot and not a demo of a control — it is the control the app mounts, with the same Governing law picker and the same jurisdictions in it. Every line on this page can be checked against it.

Nothing moves until you press it

Nothing is emailed. Nobody you name is told anything. Nothing is signed, and files stay with you. All of it waits for you to sign in and then send it yourself.

Accepting is not signing

Agreeing to the terms and putting your name to them are two separate acts. The paper always says which of the two has happened, and who did it.

The other side

The other side has it easy.

They get a link, open the paper in a browser and put their name to it. The rule is the same at every step: the other side never pays and never makes an account, and the redlines go back and forth in the room rather than around an inbox.

No account

They open the paper in a browser, read it, reply in their own words and put their name to it. There is nothing to sign up for and no password to invent.

No fee

We never charge the person you send a contract to. Paying for this is the sender's problem, and on this side of it there is nothing to pay for either yet.

Nothing to install

No app, no plug-in, no reader, no plan. A browser is the whole of what the other side needs, on a phone as much as on a desk.

Already have a contract? Bring it.

Drop the file here or press to choose. It becomes a chip at the door and goes nowhere until you send it.

What it costs

What it costs.

Free to make a contract. The other side never pays.

The room

One room. Everyone in it.

Both sides on one document, at one address, in one state. Nobody is reading a copy and nobody is waiting on a forward.

  • The other side never makes an account.

    They open the paper in a browser, reply to a clause and put their name to it. No account, no fee.

  • Redlines go back and forth in the room.

    Each change is marked and each acceptance is recorded, so the history is the document rather than a mailbox.

  • Accepting is not signing.

    Agreeing to the terms and putting your name to them are two acts, and the paper always says which of the two has happened.

The contract room

Opena room.

Contracts made simple.Describe it. Read it. Send it.The other side never pays.Accepting is not signing.Governing law, picked.