Cube forms are made for AI agents. Your agent can create a form and fill one in directly, over MCP or plain HTTP, from Claude Code, ChatGPT, Cursor or any agent. No browser, no CAPTCHA. People can still open the same link and step in anytime: check what the agent filled, change anything, or fill it themselves. Free. Sign-ups, waitlists, bug reports, sales inquiries, any form.
Hi Product Hunt, I'm Bonan.👋
My agent always knows everything a form asks for, but I still end up typing it into a browser myself. So I built Cube: every form is one link. People fill the page; agents read it and submit it directly, no browser.
Fun fact: submitting this launch took me half an hour of Product Hunt's own forms. My agent knew every answer and couldn't fill a single field. That's exactly the gap Cube is for.
Try it without signing up: tell your agent "Fill out this form for me: ui.usecube.io/f/early-access".
It's free and early. I'd love to hear where your agent gets stuck, and which form you'd open to agents first.
Sales inquiry forms first. Most "contact sales" forms ask the same five things my agent already knows. When an agent submits, does the receiving side see it came from an agent, and can they choose to only accept human submissions on some forms?
the PH form anecdote is a good pitch, but it also points at the thing I'd worry about on the receiving end. "no browser, no CAPTCHA" is great for the agent filling the form, but a waitlist or sign-up form is normally the thing CAPTCHA exists to protect, if any agent can hit it over plain HTTP with no human in the loop, what stops the same mechanism from being used to submit a form a thousand times instead of once? is there rate limiting or some form of identity on the submitting agent, or is the trust model "whoever has the link is allowed to use it, as many times as they want"?
Being able to jump in and fix an answer without starting over makes a lot of sense.
Waitlists are a good use case for this. Filling out the same details over and over gets old fast.
Bonan, the shared form link for people and agents caught my eye. Being able to inspect and change what an agent filled in feels like a useful part of the handoff. Congrats on the launch!
About Cube Forms on Product Hunt
“Forms that can be filled by agents”
Cube Forms launched on Product Hunt on October 12th, 2026 and earned 77 upvotes and 15 comments, placing #17 on the daily leaderboard. Cube forms are made for AI agents. Your agent can create a form and fill one in directly, over MCP or plain HTTP, from Claude Code, ChatGPT, Cursor or any agent. No browser, no CAPTCHA. People can still open the same link and step in anytime: check what the agent filled, change anything, or fill it themselves. Free. Sign-ups, waitlists, bug reports, sales inquiries, any form.
Cube Forms was featured in Productivity (663.5k followers), Developer Tools (521.5k followers) and Artificial Intelligence (481.6k followers) on Product Hunt. Together, these topics include over 390.2k products, making this a competitive space to launch in.
Who hunted Cube Forms?
Cube Forms was hunted by Bonan Kou. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Cube Forms stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Bonan Kou