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Codalio
Spec-first AI software factory: idea to tested code
Most AI builds break around feature four because nothing ever defined the product. Codalio starts there. Describe your idea in plain English and it writes a validated PRD and spec: user flows, data model, user stories and acceptance criteria. It then generates code against that spec, writes the tests from the same criteria, and traces every change back to a requirement before the merge. Codalio Cloud takes you 95–98% of the way to production grade. Start with a free PRD.
Hi Product Hunt, I'm Ehsan, founder of Codalio — a spec-first AI software factory.
I've been a tech entrepreneur since 1999, and for the last seven years I've worked on one question: why does software break long before anyone writes bad code?
Founder after founder told us the same story. They described their idea to an AI app builder, had a great demo by the weekend, and then it fell apart around feature four. Every new prompt broke something that used to work. They couldn't read the code, couldn't judge the architecture, and couldn't tell whether the next developer was telling them the truth.
The model wasn't the problem. Nothing ever wrote down what the product actually was. No requirements, no spec, no definition of done. So every prompt was a fresh guess, and guesses don't add up to a system. Senior engineers have always started from the spec. Most people building with AI skip it.
That's why we built Codalio, the spec-first AI software factory. Our belief is simple: your code shouldn't be as good as your prompts. It should be as good as your business context.
Today we're launching Codalio:
→ Describe your product in plain English. Codalio asks what it still needs, then writes a full PRD, section by section, each part scored before it moves on.
→ It turns the PRD into a spec: user flows, data model, roles and permissions, and user stories with acceptance criteria. "Done" is defined before any code exists.
→ It builds the prototype and the code against that spec, writes the tests from the same criteria, and checks the build against every one. In the run you see in our gallery: 81 of 81 criteria passing.
→ Rules like who can see what are written into the PRD and carried through the build, not bolted on at the end. Every line traces to a requirement, a test, and a compliance check, with three review passes before your engineer approves the merge. The code lives in your GitHub.
We're straight about where it ends. Codalio Cloud carries 90–98% of the build. Your team, an agency, or Codalio takes the last mile in Codalio Studio (coming soon) or the tools you already use.
Launch week offer, Oct 6–12:
- Free trial: start with a free PRD
- $100 off the $100 plan for the first 50 customers: code LUCKY50
- 50% off all plans: code 50PERCENTPH
- $50 off a $100 top-up: code 50OFFCREDIT
I'd love your honest take: what's the one thing that broke when you built with AI, and would a spec have caught it? I'll be here all day answering every comment.
About Codalio on Product Hunt
“Spec-first AI software factory: idea to tested code”
Codalio was submitted on Product Hunt and earned 20 upvotes and 1 comments, placing #44 on the daily leaderboard. Most AI builds break around feature four because nothing ever defined the product. Codalio starts there. Describe your idea in plain English and it writes a validated PRD and spec: user flows, data model, user stories and acceptance criteria. It then generates code against that spec, writes the tests from the same criteria, and traces every change back to a requirement before the merge. Codalio Cloud takes you 95–98% of the way to production grade. Start with a free PRD.
On the analytics side, Codalio competes within Developer Tools, Artificial Intelligence and Vibe coding — topics that collectively have 1M followers on Product Hunt. The dashboard above tracks how Codalio performed against the three products that launched closest to it on the same day.
Who hunted Codalio?
Codalio was hunted by Ehsan Mirdamadi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Codalio including community comment highlights and product details, visit the product overview.
Ehsan Mirdamadi
Hi Product Hunt, I'm Ehsan, founder of Codalio — a spec-first AI software factory.
I've been a tech entrepreneur since 1999, and for the last seven years I've worked on one question: why does software break long before anyone writes bad code?
Founder after founder told us the same story. They described their idea to an AI app builder, had a great demo by the weekend, and then it fell apart around feature four. Every new prompt broke something that used to work. They couldn't read the code, couldn't judge the architecture, and couldn't tell whether the next developer was telling them the truth.
The model wasn't the problem. Nothing ever wrote down what the product actually was. No requirements, no spec, no definition of done. So every prompt was a fresh guess, and guesses don't add up to a system. Senior engineers have always started from the spec. Most people building with AI skip it.
That's why we built Codalio, the spec-first AI software factory. Our belief is simple: your code shouldn't be as good as your prompts. It should be as good as your business context.
Today we're launching Codalio:
→ Describe your product in plain English. Codalio asks what it still needs, then writes a full PRD, section by section, each part scored before it moves on.
→ It turns the PRD into a spec: user flows, data model, roles and permissions, and user stories with acceptance criteria. "Done" is defined before any code exists.
→ It builds the prototype and the code against that spec, writes the tests from the same criteria, and checks the build against every one. In the run you see in our gallery: 81 of 81 criteria passing.
→ Rules like who can see what are written into the PRD and carried through the build, not bolted on at the end. Every line traces to a requirement, a test, and a compliance check, with three review passes before your engineer approves the merge. The code lives in your GitHub.
We're straight about where it ends. Codalio Cloud carries 90–98% of the build. Your team, an agency, or Codalio takes the last mile in Codalio Studio (coming soon) or the tools you already use.
Launch week offer, Oct 6–12:
- Free trial: start with a free PRD
- $100 off the $100 plan for the first 50 customers: code LUCKY50
- 50% off all plans: code 50PERCENTPH
- $50 off a $100 top-up: code 50OFFCREDIT
I'd love your honest take: what's the one thing that broke when you built with AI, and would a spec have caught it? I'll be here all day answering every comment.