CogentSpec

Specification Driven AI

CogentSpec

Build websites, apps and more with the AI subscription you already know & use.

Let CogentSpec () guide your chosen AI with clear project requirements & built-in checks—including important technical considerations you never knew, you never knew! - Our Web Bridge option is free...

Interactive DemoCogentSpec Q&ASDD Method

Build Easy

Select from a growing number of contracts to ensure foundational stability.

Build Quality

Production-ready assets and guardrails keep the AI focused and consistent.

Build Fast

Move from first prompt to finished product with a clear path to production.

Creative Freedom. Exacting Standards.

Your imagination sets the direction. CogentSpec gives your AI the foundation, requirements and checks to build your project—without expecting you to know every technical detail in advance.

Choose from over 40 project types, use your existing AI subscription, and work locally or on the web.

Contract matched

Website Contract

Software
project-type.website
Executable foundationWebsite Contract Pack v2.1.1 available
  • Runtime and delivery
  • Functional behaviour
  • Security and resilience
  • Acceptance evidence
Use Website contract

Available now

ChatGPT

Use CogentSpec through ChatGPT Desktop or ChatGPT Web, with Desktop recommended for most users. Connect your conversation and work alongside the CogentSpec project workspace.

Choose ChatGPT

Available now

Claude

Use CogentSpec beside Claude Code Desktop through the published plugin, or beside Claude Web through the paid Claude in Chrome extension.

Choose Claude

Preview

Local AI

Audit your computer, choose a contract-capable Qwen model, and run it locally through Ollama. Check model suitability before opening your project in CogentSpec Desktop.

Choose Local AI

Choose the closest project type. CogentSpec will bind the standards, obligations, and release gates that apply to the build.

Built-in project foundations

Start your project from a dependable & working foundation.

CogentSpec provides working foundation files, security requirements and quality checks. Your AI model adapts the tried and tested contract foundation to your brief, then builds and verifies your project through all stages of build.

42 Project Type Contracts

  • A working foundation

    Start with project files and a structure your AI can adapt to your brief.

  • Important requirements

    Keep security, accessibility and other project requirements in view as you build.

  • Checks before release

    Use tests and release checks to find missing work before you publish.

Technical

Website Contract Pack v2.1.1 contains

  • Starter application
  • General and showcase patterns
  • Pinned contract binding
  • Selected project profile
  • Semantic application shell
  • Responsive safeguards
  • Accessibility controls
  • Foundation test suite
  • SEO discovery routes
  • Acceptance evidence map
  • Local launch automation
  • Release recipes
  • Content release gate
  • Local, private, and public modes

A dependable start for your project

Repeatable work should not restart from zero.

Start with the common setup already in place, then focus on what makes your project different. Your AI adapts the foundation to your brief and checks the result before release.

Architectural difference

Direct dialogue. Governed delivery.

CogentSpec keeps you in direct conversation with the AI while an approved project contract provides the structure, requirements, controls, and acceptance criteria alongside that conversation.

01

Agentic builders

The agent mediates the work.

Platforms such as Replit-style builders place an AI agent inside their own execution environment. The agent edits files, runs commands, maintains working state, and reports through the platform's agent loop.

You ↔ AIBuild
02

CogentSpec

The contract governs the work.

You discuss refinements naturally with the AI rather than routing every change through a separate builder agent. The contract keeps delivery controlled without becoming a translation layer between you and the model.

You approveContract governsAI buildsVerify
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