Proposal software for people who invoice
Client proposals that close — without invented numbers.
ProposalFast is the AI-powered proposal workspace for agencies and consultants. Draft from your facts, send a branded client portal, track every view, collect an e-signature, and take payment — without inventing a single number.
- Email and password auth, with Google optional
- Plan limits enforced on the server
- Client portal at /p/[id] — no account required
Example workspace → example client
Brand system, Q3
Scope, timeline, and fee come from your brief. The gold marks are placeholders the writer still has to fill — not numbers the model guessed.
01
Collect the facts
Paste the brief, the fee, and the dates you already have. Missing pieces stay visible as [PLACEHOLDER] — the model is not allowed to invent them.
02
Edit the draft
Every section is yours to rewrite. Versions stay on the proposal so you can see what went to the client.
03
Send, sign, get paid
The client opens a public portal. You see the views. They sign and pay through Stripe Checkout — no second tool.
The path from brief to paid work
Proposal workspace
Create, version, and brand proposals inside one organization — never across tenants.
Fact-bound AI
Extract → outline → generate → QC → score. Invented prices and case studies are rejected.
E-sign
Consent text, signer identity, and a stored signature artifact. Not a screenshot of a pen.
Stripe payments
Subscriptions and per-proposal Checkout. Webhooks write the subscription — the UI does not.
See it in action
From brief to client portal in minutes.
AI drafts from your facts. Fees stay placeholders until you fill them.
Trust
Built for agencies still shipping proposals as Docs + email.
ProposalFast is early. We don’t paste fake logos. What we promise instead:
- No invented fees or timelines — placeholders until you confirm the numbers
- Clear path after the draft — portal Q&A, e-sign, and Stripe in one place
- Founding pricing — Pro at $29/mo for early teams (limited)
“I built this because ‘quick questions’ and version chaos were killing deals more than the writing was.”
Start on Free. Upgrade when the work does.
Free includes 5 proposals. Founding Pro is $29/month through September 30, 2026, or the first 50 Pro workspaces — whichever comes first. Regular Pro is $49/month after that. Stripe is the source of truth after you subscribe.