Video generation API
for product demos
Turn any website into a finished demo video, without anyone recording it. Connect Demosmith to your tools once, and every new release, customer or market gets its own narrated demo.
Included on every paid plan. The same videos as the Demosmith app.
Show how to book a stay in Napa Valley
- Requested
- Recording
- Editing
- Ready
Your new demo videoMade via APIExample demos of products you know, drawn to show what comes back. Demosmith is not affiliated with these companies.
Turn any URL into a demo video,
without opening an editor
The Demosmith API is a video generation API built for product demos. Give it a link to any website or web app and a sentence about what to show. It walks through the product like a person would and sends back a finished video with a voiceover, captions and zooms.
- Someone books time to re-record the demo
- They click through it again and edit the footage
- They write and record a new voiceover
- Meanwhile the old demo shows last month’s product
- The release goes out
- Demosmith makes a demo of the new feature
- The finished video lands in your library and your launch channel
- Your demos always show the product you sell today
Demo videos that keep up
with your team
Programmatic video for the moments where a demo is always needed and never ready.
A demo for every release
Product marketing gets a narrated video of each new feature the day it ships, ready for the changelog, the launch post and the sales team.
Demos that never go stale
Re-make your onboarding, help-centre and website demos whenever the screens change, so nobody watches last quarter’s product.
Every demo, in every language
Make the same demo with a voiceover and captions in any of 31 languages, so each market launches with a demo in its own language.
Demo videos inside your platform
Agencies and platforms request a demo of each client’s website or app from their own tools. Demosmith does the rest.
Set it up once.
Demos follow every change.
Connect it once
A developer on your team adds your Demosmith key to the tool you want, like your release process or your own app. Or ask Claude Code or Codex to do it.
Say what to show
Each request is a link to the website and a sentence, like "show how a new user creates their first project."
Get the finished video
Demosmith records the product, edits it and adds the voiceover. The video lands in your Demosmith library and wherever your tools send it.
Simple for your developers
to switch on
A single call with a link and a sentence starts the demo. Demosmith tells your tools when the video is ready, and the developer docs cover everything else.
curl https://platform.demosmith.ai/v1/demos \ -H "Authorization: Bearer $DEMOSMITH_API_KEY" \ -d '{"url": "https://app.yourproduct.com", "task": "Show how a new user creates their first project"}'
The same finished demo
as the Demosmith app
A voiceover in 31 languages
Pick the language, voice and tone, or keep the defaults.
Captions, zooms and music
Captions match the voiceover, every click gets a zoom, and you can add a music track.
Works behind a login
Send your login with the request. It’s encrypted and only used by Demosmith to sign in.
Saved in your library
Every video also appears in Demosmith, labelled API, so your team can edit, share or download it.
Questions people ask
Every paid plan includes the API, from $40 a month. Videos made through it use the same AI minutes as videos made in the app. Compare plans
It’s a way for your software to ask for a video without anyone making it by hand. The Demosmith API is a video generation API built for product demos: send it a link and a sentence, and it sends back a finished, narrated demo video.
Yes. Give Demosmith a link to any website or web app and say what to show. It walks through the product, records it and returns an edited video with a voiceover, captions and zooms. It’s a real walkthrough of your product, not a slideshow of screenshots.
Product, marketing and sales teams who need demo videos to keep up with what ships, and agencies and platforms that make videos for their clients. A developer connects it once, and after that nobody has to touch it.
Someone needs to connect it once. If you’d rather skip that, ask Claude, ChatGPT, Claude Code, Codex or Cursor for a demo instead. See AI agents & MCP.
It comes with every paid plan: Starter at $40 a month, Pro, Business and Enterprise. Videos made through the API use the same AI minutes as videos made in the app, based on the length of the finished video. The 3-day trial doesn’t include it. See pricing.
Yes, in any of the 31 languages Demosmith narrates and captions in. Ask for the same demo in several languages to launch in every market at once.
Include your login with the request. It’s encrypted and only used by Demosmith to sign in. If your product sends a verification code, the demo pauses until someone enters it.
No. The API makes the narrated demo video. Interactive demos, docs, social clips and product films are made in the Demosmith app.
At developers.demosmith.ai, with a quickstart, the full reference and a playground to try each call.
Ship the feature.
The demo video is already done.
Connect it once. From then on, each new feature ships with a demo video nobody had to record.