Minimum-Context Executable Brief
Define the outcome, trim the prose, and make the idea tangible.
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 5
- Confidence
- 93%
StackBlitz keeps most product requirement documents light: the minimum context needed to align the team and preserve the feature's key outcomes. The mechanism is compression plus embodiment. First specify the user, desired result, critical constraints, and details that must be exact. Then leave noncritical decisions open so the builder can exercise judgment. Replace explanatory bulk with a working prototype whenever possible, because a live experience reveals behavior and feel that prose or static frames cannot convey. The same brief can guide a developer or an AI coding agent. Simons advises product managers to address Bolt like a developer coworker or a well-written Linear or Jira ticket: be specific where the detail matters and explicitly allow creativity where it does not. If the document becomes hard to decipher, trim it before handoff.
Origin
Simons described StackBlitz's internal use of light Notion PRDs and working Bolt prototypes. He connected the same practice to prompting Bolt: communicate as if assigning work to a developer teammate, with precision only where it matters.
Core principles
- 01A brief needs enough context for alignment, not every thought the author had.
- 02Key outcomes matter more than exhaustive prose.
- 03People gloss over documents that are difficult to decipher.
- 04A working demo communicates behavior better than static description.
- 05Specify what matters and leave room for creativity elsewhere.
How to run it
- 1
Name the user outcome
State who needs the change and what should become possible for them. Make the outcome the anchor for every later detail.
Pro tip Use an observable result rather than a feature label.
- 2
Add decision-changing context
Include only background and constraints that materially affect the solution. Remove history, speculation, and commentary that do not change what gets built.
Watch out Too little context creates ambiguity; minimum means sufficient, not skeletal.
- 3
Separate precision from freedom
Mark the behaviors, copy, data, or design details that must be exact. Explicitly allow the builder to make creative choices everywhere else.
Pro tip Phrases such as 'this interaction must work exactly this way' and 'use your judgment on the visual treatment' make the boundary clear.
- 4
Build the explanation
Create or attach a working prototype that demonstrates the intended flow. Use it to communicate feel, sequence, and interaction that would otherwise require many paragraphs.
Pro tip When speed matters, a rough coded prototype can be more informative than polished static frames.
Watch out Do not let prototype implementation details silently become requirements.
- 5
Run the playback test
Ask the recipient—human or AI—to explain what they will build and what success means. Repair only the context gaps exposed by that playback.
Pro tip If the playback is accurate, resist adding more prose for reassurance.
In the wild
A StackBlitz product brief can contain the key outcome, minimal context, and a link to a Bolt prototype showing what the feature should feel like. Instead of asking design and engineering to interpret a long document, the team can use the running experience as a shared reference and discuss only the remaining decisions.
→ The handoff preserves alignment while reducing the chance that people skim a dense document and build from different interpretations.
A product manager asks an AI builder for a customer portal. The brief identifies the user, the required billing and account actions, the company's exact design tokens, and the success state. It leaves layout composition open and asks the agent to produce a working first pass for review.
→ The first result has the required behavior without overconstraining choices that the agent can make effectively.
Common mistakes
Writing for completeness
A document can contain every thought and still fail to communicate. Simons warns that people gloss over beefy PRDs because there is too much to decipher.
Specifying every pixel
Excessive constraints eliminate useful judgment. Be exact only about details that determine the outcome.
Treating a static frame as behavior
A static design cannot fully communicate how software feels in use. A live prototype exposes interaction and sequence earlier.
Is it for you?
Best for
Product managers and founders turning a clear product idea into work for a human or AI builder.
Not ideal for
Highly regulated or technically intricate changes that require exhaustive acceptance criteria, risk analysis, and formal documentation.
From the episode
Inside Bolt: From near-death to ~$40m ARR in 5 months—one of the fastest-growing products in history
Eric Simons (founder and CEO of StackBlitz)