Or start from an idea — we draft the first spec for you.
AI proposes. You decide.
Structured create, update, and delete suggestions. Nothing writes until you approve.
Steps, branches, decisions.
Typed flows with nested steps, triggers, and test cases. One source of truth.
Click through the product before it exists.
Generate a full-screen prototype from any flow: interfaces, viewports, real navigation. Nothing is live until you ship.
Find the holes before they ship.
Contradictions, gaps, and dead terms: graded, quoted, fixable with AI.
Chat that knows the project.
Ask the live spec. Proposals only; never silent edits.
Share without an account.
Read-only live spec. Visitors browse flows, roles, and models.
Competitors, with evidence.
Sourced signals first. Interpretation second. Your decision always.
Define it. Keep it alive.
Define
Describe the product. Get connected flows, roles, and models.
Approve
AI returns proposals. You accept or reject each one.
Connect
Publish for stakeholders, Slack, and coding agents.
Evolve
Version changes. Analyze gaps. Revert any revision.
Four sentences every team says.
“Why does it work this way?”
History on every field — who, when, why.
“The spec says two different things.”
Analyzer catches contradictions before build.
“The agent built exactly what we wrote.”
Agents query the live, approved revision.
“That document is a year out of date.”
Versioned drafts. Publish. Revert. Repeat.
Change is inevitable. Drift isn't.
Everything a living spec needs.
Market radar
Watch competitors. Sourced signals, then AI interpretation.
Compliance checks
GDPR, HIPAA, SOC 2, and more — graded against your spec.
Field history
Who introduced it, every change, the reason recorded.
Evidence-backed AI
Findings quote your spec. Unverified lines get badged.
Delivery progress
Partial work counts honestly across the current revision.
Investor decks
Ten VC sections from your active revision. Regenerate one.
Jump anywhere with Cmd+K
Search flows, steps, models, and terms. Land with the editor open.
Branching flows
Steps, sub-flows, decision points, live diagrams.
Full-screen prototypes
Click through a flow as a generated UI — before anyone builds it.
Data models
Typed fields, enums, references — hand or generated.
Test cases
Verification on every flow. QA starts from the spec.
Discussions
Threads on flows. @mentions. AI via @cs.
Public share links
Read-only live spec. Visitors can ask AI questions.
Full anatomy
Roles, phases, epics, glossary — one vocabulary.
Cmd+K
Search every flow, step, model, and term.
PDF & DOCX
Server-rendered export when someone wants “the document.”
Slack Q&A
@CrystalSpec answers from the published revision.
$49 for the team. $10 when it grows.
Free Trial
Every feature unlocked while you evaluate.
- Full spec authoring & AI assistant
- 500 shared AI credits
- Versioned revisions & publishing
- Read-only public sharing
Team
First seat included. +$10 per teammate.
5 members → $89/mo. Save 10% annually.
- Unlimited projects
- 3,000 base + 500 AI credits per seat
- Shared team AI balance
- Push to GitHub, Linear & ClickUp
- MCP, GraphQL, webhooks & PDF export
Questions, short answers.
Is CrystalSpec a project management tool?
No. PM tools track tickets and deadlines. CrystalSpec defines the product: flows, roles, data models, decisions, and test cases. It can push tasks to GitHub, Linear, and ClickUp — the living spec stays the source of truth.
Can the AI change my spec without me knowing?
No. The assistant only produces proposals. Each is validated, waits for your approval, and is recorded. Rejected proposals stay visible.
How do AI credits work?
Paid teams get 3,000 base credits plus 500 per billed seat monthly, in one shared pool. $10 top-ups add 1,000 credits for 180 days. Trials share 500 credits for 14 days. Reviewing proposals is free.
What if two people edit at once?
One draft at a time. The first editor locks the draft; everyone else sees the published version. Publish, then the next change starts from there.
Can coding agents read the spec?
Yes. Hosted MCP for Claude Code, Claude Desktop, and Cursor; GraphQL API; signed webhooks on publish; PDF and DOCX for humans.
Do I need a credit card to try it?
No. 14-day trial, every feature, 500 shared AI credits. Then $49/month with the first seat included, +$10 per additional member.
Something else? Start free →