What to Include in a PRD (2026): Brain Dump Ledger + Checklist

Q: What are acceptance criteria?

Acceptance criteria are pass/fail requirements that define 'done.' They make QA and implementation unambiguous.

A PRD (Product Requirements Document) is only "hard" because most people start with a vague idea and skip the details that prevent drift: non-goals, acceptance criteria, roles/permissions, and data/integration assumptions.

This guide gives you a Brain Dump Ledger you can follow (Minimum → Strong → Shipping-ready), plus a copy/paste template. If you fill this out, you'll create a PRD that's actually buildable (and AI tools won't invent random features).

✅ Want a PRD instantly?
Paste your brain dump into the free tool: Generate PRD from a brain dump (Free)
Need the definition + template too? PRD document template

TL;DR: The PRD checklist that prevents drift

If you only remember 6 things, include these in your PRD input:

Goals (measurable)
Non-goals (hard boundaries)
Core features (MVP only)
User flow (step-by-step)
Acceptance criteria (pass/fail)
Data + roles + integrations (what exists, who can do what, what connects)

Everything else is important — but those 6 prevent most "build drift."

The Brain Dump Ledger (Minimum → Shipping-ready)

Think of this as your "PRD fuel." The more you include, the better the PRD (and the fewer hallucinations / contradictions you'll get later).

Level 1 — Minimum (gets you a usable PRD)

Include this if you're starting from scratch:

App name + one-liner: what is it?
Target user: who it's for (1–3 personas)
Problem: what pain are you solving?
Core outcome: what does "success" look like?
Top 3–5 features: bullets are fine
Platform: web / mobile / PWA
Constraints: must-have rules (time, budget, compliance)

✅ With Level 1, you can generate a PRD that's good enough to align stakeholders.

If you're missing Level 1 info, do this:

Write a one-liner in this format:
"A {product} for {user} that helps {outcome} by {mechanism}."
List 3–5 features as verbs: "Create / Invite / Pay / Track / Export…"

Level 2 — Strong (recommended for build-ready PRDs)

Level 2 is where your PRD becomes "engineering friendly":

Goals (measurable): KPIs + targets
Non-goals: what you will NOT build
User journey: step-by-step flow (entry → value → retention)
Acceptance criteria: pass/fail checks for each feature
Data objects (entities): User, Project, Order, Team, etc.
Integrations: Stripe, Supabase, email, CRM, etc.
Risks & edge cases: abuse, fraud, permissions, failure states

✅ With Level 2, you stop 80% of "scope creep disguised as help."

If you don't have Level 2 info, research fast:

Search competitors and write:
"We copy X, avoid Y, and differentiate with Z."
For acceptance criteria, write:
"Given {state}, when {action}, then {expected result}."

Level 3 — Shipping-ready (best results + easiest to ship)

Level 3 makes your PRD "production-aware":

Competitors / alternatives: 3–5 + what you'll copy/avoid
Differentiators: why you win (not vibes)
Pricing model: free/paid, tiers, credits, trial
Permissions & roles: admin/user/manager + constraints
Non-functional requirements: security, performance, logging, privacy
Analytics events: the 10–20 events you must track
Launch plan: MVP scope + milestones

✅ With Level 3, you're basically one click away from API spec + schema + architecture.

This is also where tools like Context Ark can "magically upsell" the full spec pack — because you already provided enough input to generate the rest.

The copy/paste PRD brain dump template (fast)

Paste this into your notes and fill it out. Bullet points are perfect.

App:
One-liner:

Users:
- Primary user:
- Secondary user:

Problem:
Why now:

Goals (KPIs):
-

Core features (MVP):
1)
2)
3)

Non-goals:
-

User flow (step-by-step):
1)
2)
3)

Requirements (key rules):
-

Acceptance criteria (pass/fail):
- Feature 1:
- Feature 2:
- Feature 3:

Data objects (entities):
-

Roles & permissions:
-

Integrations:
-

Constraints:
- Time:
- Budget:
- Compliance:

Risks / edge cases:
-

Analytics events (top 10):
1)
2)
3)

Competitors + notes:
-

"Good vs bad" examples (steal these patterns)

1) Goals (KPIs)

Bad: "Make onboarding better." Good: "Increase activation from 22% → 35% within 30 days. Activation = user completes onboarding + creates first project."

2) Non-goals

Bad: "We probably won't do mobile yet." Good: "Non-goal: Native iOS/Android in MVP. MVP is web-only. Mobile is a future milestone after validation."

3) Acceptance criteria

Bad: "Users can create projects." Good:

Given the user is logged in, when they click "Create Project," then the project is created and appears in the list within 2 seconds.
Given the project name is empty, when they submit, then show inline error "Project name required" and do not create a record.
Given the user lacks permission, when they attempt creation, then block and show "You don't have access."

4) User flow

Bad: "User signs up then uses app." Good (step-by-step):

Visit landing page → click "Start free"
Create account → verify email
Choose template → create first project
Invite teammate (optional)
Complete first action → see "success" state
Return later → dashboard shows progress

Research prompts (when you're missing key info)

If you don't have certain fields, do 10–15 minutes of research and paste it into your dump.

Market & competitors

"Top competitors for {your product category}"
"Common features in {category} apps"
"Pricing model for {competitor}"
"Most complained about problems in {category} tools"

Users

"Who buys {category} software and why?"
"Top jobs-to-be-done for {persona}"
"What are the biggest workflow bottlenecks for {persona}?"

Requirements & risks

"Typical data model for {app type}"
"Common security risks in {app type}"
"Edge cases for {feature}"
"Common failure modes for {integration}"

Common PRD mistakes that create build drift (and AI hallucinations)

If you want the PRD to be reliable, avoid these:

Vague scope ("something like Uber")
No non-goals (AI/teams "helpfully" add features)
No acceptance criteria ("done" becomes subjective)
Unclear roles/permissions (security and workflow bugs)
No data objects (schema mismatch later)
No integration assumptions (fake endpoints and payloads)
No constraints (performance/security left to chance)

If your PRD has these gaps, you'll pay later in rework.

Turn your brain dump into a full PRD (free)

Once you have Level 1–3 input, generate the PRD:

✅ Generate PRD from a brain dump (Free) 📄 Prefer starting from a template first? PRD document

Why this makes upgrading feel natural (not salesy)

If the user fills Level 2–3, they've already provided:

entities (data)
roles (permissions)
integrations
constraints
flows

That is exactly the input needed to generate:

API outline
schema draft
architecture constraints
test plan

So your PRD tool can truthfully say:

"You already provided enough context to generate the build specs."

And the upsell becomes: "Continue with Spark (free monthly) or unlock Growth/Scale to generate the full pack."

FAQ

What should a PRD include?

At minimum: problem, users, goals, MVP features, constraints. For build-ready PRDs: add non-goals, acceptance criteria, user flow, data objects, roles/permissions, integrations, and risks.

How long should a PRD be?

Long enough to remove ambiguity. Many great PRDs are 2–6 pages for MVPs, longer for complex products. If it's vague, it's too short.

What are non-goals in a PRD?

Non-goals are explicit statements of what you will NOT build in the current scope. They prevent scope creep and "helpful" feature invention.

What are acceptance criteria?

Acceptance criteria are pass/fail requirements that define "done." They make QA and implementation unambiguous.

PRD vs user stories vs tickets — what's the difference?

PRD = product intent and scope. User stories = feature behavior from a user perspective. Tickets = execution tasks for engineering.

Next steps

Generate your PRD now
Start from a PRD template
Learn the spec-first workflow → /blog/spec-driven-development-for-ai-coding
Fix drift/hallucinations → /blog/how-to-stop-ai-hallucinating-code