Pair every element with its trigger
Each interactive element is tied to the specific action that triggers it (click, type, hover, swipe), removing ambiguity about what causes what.
Free MVP handoff tool
InteractionSpec AI
Write out exactly what should happen for every user action on a screen, so interaction behavior is documented instead of left to developer interpretation.
- Calculated instantly from your inputs
- No signup or data submission
- A focused next step for MVP planning
Your entries remain in this browser session and are not sent to MVPHub.
Your inputs
Document interaction behavior for a screen
Enter one action per line as Trigger element | user action (click/type/hover/swipe) | resulting behavior. List every interactive element on the screen.
Your calculated result
Your result
0/100
Planning score
Recommended next actions
How it works
Require a described resulting behavior
Every trigger must have a written outcome — "it works" is not accepted, since vague outcomes are exactly what leads to inconsistent implementation.
Flag thin specs for follow-up
Interactions with a very short resulting-behavior description are flagged as likely under-specified, prompting a second pass before handoff.
Frequently asked questions
How detailed should the resulting behavior be?
Specific enough that a developer could implement it without asking you a follow-up question — mention visible feedback, timing, and error handling where relevant.
What if the same element has multiple possible behaviors?
List it as separate lines, one per distinct trigger/outcome pair, so each behavior gets its own clear entry.
Does this cover animation timing and easing?
You can include timing notes in the resulting behavior text, but this tool does not generate animation curves or code — describe intent, not implementation.
Can I use this alongside SpecSnap?
Yes — SpecSnap documents the static structure of a screen; InteractionSpec AI documents what happens when users interact with it. Use both for a complete handoff.
How we compare
| Capability | MVPHub | Verbal explanation in a handoff meeting | Figma prototype links with comments |
|---|---|---|---|
| Requires an explicit outcome for every trigger | ✓ | × | — |
| Flags vague or under-specified behaviors | ✓ | × | × |
| Persistent written record, not a verbal explanation | ✓ | × | ✓ |
| Actual interactive prototype to click through | × | × | ✓ |
MVPHub forces every interaction to have a written, checkable outcome. A Figma prototype shows the interaction visually but relies on comments to capture edge-case behavior explicitly.