Validate ideas against
your real product in minutes.
Spec turns a feature request into a sandboxed build workspace, live preview, and pull request path. The goal is not more tickets. The goal is seeing the idea in your real product fast enough to steer it.
Slack-native build workspaces.
01
Describe the feature in Slack
Customer success, sales, PMs, designers, and founders can ask for a feature in a thread or DM. The idea starts where the context already lives.
Slack thread
New feature request
Sarah from customer success
"Customers keep asking for a spending limit warning on the dashboard. Can we try it without pulling engineering off roadmap work?"
Spec reply
Building this in a sandboxed copy of your app now. Preview link and follow-up updates will stay in this thread.
02
Spec builds it in a sandbox
The agent restores a safe copy of your app, follows your repo instructions, and builds against your actual components, routes, and data models.
Build workspace
Persistent sandbox
Preview
preview.spec.dev/acme/spending-limit
Follow-up prompts continue on the same workspace, so the idea gets refined instead of rebuilt from scratch.
Files changed
03
Steer it with follow-up prompts
Once the preview is live, keep working in the same sandbox. Ask for copy changes, layout tweaks, edge-case handling, or a different direction without restarting from a fresh clone.
Live workspace
Preview plus chat steering
Preview viewer
The feature is running against your real routes, components, and data model in an isolated sandbox URL.
Follow-up prompt
"Move the warning above the chart, tighten the copy, and add a zero-threshold guard before we hand this to engineering."
Workspace reply
Spec keeps applying changes in the same workspace, then graduates the finished branch to a pull request when you are ready.
Real product iteration, not mockups and not backlog theater.
A feature request should not need a full engineering commitment just to see whether it works. Spec gives non-engineers a safe path to see ideas inside the real product before asking engineering to pick them up.
Built against your real product, not a toy app. Sandboxed by default with no production access. Persistent workspaces with follow-up prompts. Ready work can graduate to a pull request.