The Evergreen App Idea Brief: A 7‑Field Template to Turn a Side Project Idea into a Build‑Ready Spec

Long, sprawling PRDs are useful in large orgs, but for solo founders and small teams they create friction: discovery stalls, contractors see inconsistent context, and launch prep is fragmented. A single-page brief forces decisions and preserves alignment while remaining exportable into longer artifacts when needed. Sources such as Atlassian’s and industry PRD guides show the same core fields repeat across templates — goals, users, success metrics, features, constraints, and acceptance criteria — which is what we compress into seven targeted fields. (atlassian.com)

The goal of the evergreen brief is not to replace a formal PRD in regulated or enterprise projects; it’s to produce a build‑ready spec that’s traceable, testable, and handoff friendly. When you need a longer PRD later you’ll have all the source inputs collected and documented. This approach mirrors best practices recommended by product tooling and template providers: keep a single source of truth and make launch readiness explicit. (notion.com)

Here are the seven fields. Each one is crafted to produce a downstream artifact (PRD excerpt, JSON‑LD, launch blurb, or handoff item): 1) Name & one‑line promise; 2) Primary user and key job‑to‑be‑done; 3) Core flow (3–6 steps); 4) Must‑have acceptance criteria (3 measurable items); 5) Constraints & integrations; 6) Success metrics (one north‑star + two KPIs); 7) Launch notes & short copy (30‑90 chars). These mirror elements found in standard PRD templates but focused for quick output. (atlassian.com)

Copyable 20‑minute prompt (fill the blanks): Name & promise: __. Primary user + JTBD: __. Core flow (step1→stepN): __. Acceptance criteria (testable): __. Constraints/integrations: __. Success metrics (north‑star + 2 KPIs): __. Launch notes & 30–90 char copy: __. When filled, this brief becomes the seed for a PRD section, feature JSON‑LD metadata, a launch blurb, and contractor tasks.

Example idea: "MicroInvoice — send a one‑line invoice and collect payment in 60 seconds." Filled brief (condensed): Name & promise: MicroInvoice — create & send a 1‑line invoice in 60s. Primary user + JTBD: Freelancers who need a quick, no‑account invoice to close small jobs. Core flow: 1) enter amount + email, 2) preview, 3) send link with payment, 4) payer completes. Acceptance criteria: invoicing link generated <2s, payment flow completes without redirect errors, email delivered ≤60s. Constraints: Stripe only, no account required, GDPR data retention. Success metrics: conversion 10% from link views, time to first send <2m, 30‑day retention 20%. Launch notes & short copy: "Send an invoice in 60s. No signup."

From that single filled brief you can: export a PRD excerpt listing features and acceptance tests; generate a JSON‑LD feature snippet for feature metadata and discovery; craft a 90‑char Product Hunt blurb and a 280‑char tweet for launch; and create contractor tickets mapping each core flow step to tasks and acceptance tests. Notion and other launch guides emphasize assembling a single checklist and owner map for launch — this brief feeds those checklists directly. (notion.com)

Contractor handoff: create tickets that include the filled brief (read‑only) plus a single doc with links to design assets, API keys, and the acceptance‑criteria checklist. Include exact test data and the success metrics so contractors know when work is complete. This mirrors readiness and UAT checklist practices used by product teams to reduce rework. (6039523.fs1.hubspotusercontent-na1.net)

Launch readiness: convert the brief’s Launch notes into a one‑page launch dossier: launch headline, target audiences, 3 launch channels, owner for each channel, and top three KPIs with targets. Use the dossier as your pre‑launch sign‑off: when all owners check ‘ready’ and KPIs have baseline values, you ship. Notion and indie launch guides recommend the same single‑document approach to avoid scattered comms and missed steps. (notion.com)