The deck you already have, turned into a deal your client can sign.
No template to fill in, no editor to learn. You bring what you already send; we rebuild it on LetSign so your AI has something real to work with.
- 1
Drop your deck
A PDF, a Google Slides link, an old contract or just your website. We work out which it is.
- 2
See it rebuilt
Your first three slides come back as editable HTML in your colours, with a contract and pricing drafted from them. Free, no card.
- 3
Your AI takes over
Connect Claude or ChatGPT. It rebuilds the rest, personalises the proposal for each client, and sends it for signature and payment when you say so.
One plan. $19 until October 1.
Founding price for early workspaces, locked with your rates until 2028.
- 0% to $20,000/mo, then 0.05%
- Price + rates locked to Oct 1, 2028
- What the launch plan becomes
見本Try it
Your client signs this. Play with it.
A real contract an agent generated. Switch the look, swap the template, or hand it a prompt and watch it rewrite. Obviously fake. Reassuringly non-committal.
Style
Template
Hand it a prompt
Fully editable by hand. Always.
Agents are fast, but they are not the only way in. Open any draft in the LetSign app and it becomes a document you edit directly - the same blocks, prices and clauses the MCP writes, now under your cursor. Set the brand it wears in the same place. Nothing is locked until you send.
Manual contracts are slow. Deals aren't.
Contracts used to be edited by hand: slow, rigid, one at a time. LetSign generates beautiful contracts on the fly, matched to each customer's exact needs, at any scale.
End to end, no one in the loop, and you above it.
Agents never sign. They orchestrate. Your customer signs; you supervise from the app.
Three ways agents already contract with LetSign.
The contract looks exactly like the proposal. Because it came from it.
Claude writes the proposal, then attaches a contract in the same style, same content. Your customer never looks twice.
Terms move as the conversation moves.
The agent adjusts terms and options in real time as the negotiation evolves. Conditional pricing tables let the customer pick their own deal.
Thousands of contracts. Zero humans in the loop.
A quote becomes a signed job with payment collected automatically, at any volume. You see the ledger.
Binding where it matters. Auditable everywhere.
Enforceable across Western jurisdictions. Agents orchestrate. The signature is always human.
Bends to the deal. Never the other way.
Built to disappear into whatever your agent is doing: a proposal, a negotiation, ten thousand quotes.
Before you drop your deck.
What is LetSign?
LetSign is agent-first, MCP-native contract infrastructure. AI agents generate on-brand proposals and contracts, run conditional pricing, capture payments and subscriptions via Stripe, and collect legally binding e-signatures with email verification and a full audit trail. It is a ground-up, agent-native alternative to PandaDoc and Qwilr.
What can I upload to get started?
A PDF works best: a sales deck, a proposal or an old contract. You can also paste a Google Slides or Google Docs link, drop an HTML deck or a Word document, or type your website and we write a deck from it. PowerPoint and Keynote files need exporting to PDF first. Files can be up to 25 MB.
Is the preview free, and what happens to my file?
Yes. Your first three slides are rebuilt free, no card needed, and each visitor gets two free rebuilds a month. To keep the proposal and finish the rest, you create a free account. We keep the preview for 14 days, then delete the file unless you claim it into your workspace. Nothing is sent to anyone until you say so.
Do I need Claude or ChatGPT?
To finish and send proposals, yes: LetSign works through the assistant you already use. Claude connects in one click on Free, Pro, Max, Team and Enterprise plans. ChatGPT needs Developer mode on a paid plan. Claude Code, Codex, Cursor and any other MCP client work too.
Is a LetSign contract legally binding?
Yes. LetSign contracts are enforceable across Western jurisdictions including the US, EU, UK, Canada and Australia, with email verification, e-signatures compliant with ESIGN and eIDAS, and a complete immutable audit trail.
How is LetSign different from PandaDoc or Qwilr?
LetSign is designed from the ground up from an agent perspective. It matches the flexibility of tools like PandaDoc and Qwilr while staying simple enough for agents to contract anyone autonomously, style-matched to whatever the agent just produced, with conditional pricing the recipient picks inside the contract itself.
Let the agents work the night.
One click from Claude or Codex, and LetSign slots into your agentic flows. Contracts by morning. Or drop your deck first and see it rebuilt ->