AI Development Suite — End-to-end automation from planning to production

Cut Development Lead Time
by 80%

Bug recurrence -90% · Dev effort -70% · Ship velocity +5x.
5 products automate planning, implementation, testing, fixing, and analytics end-to-end.

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-80%
Development Lead Time
Shorter planning-to-release cycle
-90%
Bug Recurrence Rate
AI auto-fix × test automation
-70%
Engineering Effort
PRD generation, reviews & analytics automated
+5x
Ship Velocity
35 tickets in 17 hrs (actual result)

※ Based on actual results: Purple Codens completed 35 tickets (est. 1–2 person-months) in 16h 45m on 2026-04-20. Final numbers subject to CEO review.

Codens is an AI development suite from Japan that automates the entire software development lifecycle — requirements (Green), implementation (Purple), code review & security audit (Orange), QA/E2E testing (Blue), and production error auto-fix (Red). Teams can build and operate software products without a large team of specialist engineers.

Dogfooding in production: 65% of our merged PRs are AI-generated (measured via the GitHub API — see the stats page)

Used in production by

Portament Widsley
Portament Portament, Inc.
  • ·5 projects running in parallel
  • ·Business members peer-review requirements in Green / Red Codens and file tickets directly
  • ·Purple Codens executes implementations immediately, so business doesn't wait for engineers
  • ·Even when requirements aren't fully nailed down, the team ships and refines from the working result
  • ·When AI gets stuck, the engineer takes over using MCP to inspect details and implement directly
4 people
3 business + 1 engineer
1.5 months
All 5 projects shipped
1,000+
Total PRs merged
Widsley Widsley, Inc.
  • ·High-complexity project including networking layer, run with 1 PM-engineer + 2 QA engineers
  • ·QA tests with detailed repro steps and files bugs into Red Codens with full context
  • ·Red Codens analyzes logs to localize the issue, Purple takes the fix through implementation
  • ·PM aligns with business, drafts PRDs in Green Codens, then routes to Purple for implementation
  • ·When the AI flow stalls, the engineer drops in via MCP and finishes manually with full context
3 people
1 PM-eng + 2 QA
3 months
Shipped to release
High difficulty
Includes networking

Media Coverage

Codens press releases (published July and April 2026) were republished by 40+ media outlets via PR TIMES.

July 15, 2026 release (selected):

Toyo Keizai Online Asahi Shimbun Digital &[and] NewsPicks ASCII STARTUP

and more, including Jiji.com, NIKKEI COMPASS, Infoseek News, STRAIGHT PRESS, Otakuma Keizai Shimbun, BtoB Platform Industry Channel, @DIME, Mapion News, Mainichi Shimbun Digital, TBS NEWS DIG, and others.

Full list of outlets for each release via PR TIMES: July 15, 2026 release / April 30, 2026 release

Codens Suite — Understand in 1 Minute

See how AI transforms your entire development lifecycle in a 60-second demo.

Purple: Dev Orchestration
Green: PRD Generation
Red: Auto Fix
Blue: Test Automation
Orange: Code Review & Security

Codens Suite Architecture

5 products working together to automate the entire dev lifecycle

Orange Codens — PR Quality Gate & Security Audit Layer
Auto-reviews every PR and hands findings to Purple/Red
Green
Green Codens
PRD Generation & Requirements
Structures business requests
Purple Codens
Dev Orchestration
AI automates implementation & review
Red
Red Codens
Auto Fix & PR Creation
Bug info / PR URL
Blue
Blue Codens
Test Automation & Bug Analysis
Data flow
Orange quality gate
Purple Codens
Notion tasks → auto-implementation → PR creation. Dev orchestration engine.
Green Codens
AI converts business requests into structured PRDs. Bi-directional Notion sync.
Red Codens
Detects errors and creates fix PRs in under 3 minutes. 92% success rate.
Blue Codens
AI-powered test generation, E2E automation, and bug analysis.
Orange Codens
Auto-reviews PRs & audits security. Hands findings to fix PRs.

Codens Family Products

Use standalone or as an integrated suite — your choice

Red Codens

AI Auto Code Fixer

Detect errors and auto-create fix PRs

  • Real-time error detection via webhooks
  • AI analyzes entire codebase for root cause
  • Up to 3 retries on test failure for higher accuracy
  • Auto GitHub PR creation + Slack notifications
3-min fix 92% success
Learn more
Blue Codens

AI QA Automation Platform

Quality and efficiency through test automation

  • Auto-generate test cases from specs or code
  • Generate Playwright E2E tests from natural language
  • AI-powered test failure analysis and auto bug reports
  • Integrates with Red Codens for end-to-end auto-fix
E2E Automation Bug Analysis
Learn more
Green Codens

AI PRD Creator & Manager

Bridge business and development

  • AI transforms free-form text into structured PRDs
  • Custom template support
  • Built-in review and approval workflows
  • Bi-directional Notion/GitHub sync
PRD Generation Notion Sync
Learn more
Orange Codens

AI Code Review & Security Audit

A PR-stage quality gate that stops defects

  • Auto-reviews GitHub PRs and comments findings
  • AI detects bugs, vulnerabilities, and design risks
  • SCA/SBOM dependency vulnerability auditing
  • Hands findings to Purple/Red for automated fix PRs
PR Quality Gate Security Audit
Learn more
Purple Codens

AI Development Orchestration

From Notion task to PR — fully automated

  • Detects Notion tasks and dispatches AI engineers automatically
  • Autonomously implements code, runs tests, and iterates to completion
  • Auto-creates GitHub PRs + real-time Slack notifications
  • Proven: 35 tickets (est. 1–2 person-months) completed in 16h 45m
Auto-Implement PR Creation +5x Speed
Learn more

How Codens Compares

Only Codens Suite automates the entire development lifecycle end-to-end

Feature / Capability
Codens Suite Us — full platform
GitHub Copilot Code completion
Devin / Cursor AI Agents
Point Tools Sentry / Linear etc.
Manual Traditional dev
Auto error detection & fixing ✓
3 min · 92% success
 △
Manual trigger
 △
Partial
 △
Detection only
 ✗
Manual
Automated test case generation ✓
Spec & code aware
 △
Completion only
 △
Partial
 ✗ ✗
E2E test execution ✓
Playwright native
 ✗ △
Limited
 △
Separate tool needed
 ✗
PRD generation & management ✓
With Notion sync
 ✗ ✗ ✗ ✗
PR review & security audit ✓
Findings → fix PRs
 △
PR summary only
 △
Partial
 △
Separate tool
 ✗
End-to-end automation ✓
5 products connected
 ✗ △
Code-level only
 ✗
Siloed
 ✗
Lead time reduction -80% -10–15% -15–20% -5–10% Baseline
✓ Supported / △ Partial / ✗ Not supported
See the detailed comparison vs Devin, GitHub Copilot, Cursor & CodeRabbit

Integrates with Major Services

Seamlessly integrate into your existing workflow

GitHub

Slack

Notion

Jira

Sentry

For Enterprise · NEW From ¥1,000,000 / month

Onboarding Support Plan — ride-along rollout

A dedicated Codens team rides alongside your engineers for the first 3–6 months of rollout: PRD authoring, workflow design, continuous AI instruction tuning, internal AI governance docs, and weekly reviews. Best for large-scale deployments or teams new to AI-driven development who want the fastest path to measurable results.

Dedicated team Weekly reviews Prompt / workflow tuning AI governance rollout 3-month minimum term
Talk to onboarding See pricing details

Common concerns, and how Codens answers them

"What if AI breaks production?" — here's the safety stack underneath.

Does the AI merge code directly to main?
Configurable per workflow: human-gated merge (default) or auto-merge. By default, Codens only opens GitHub PRs and main stays untouched until you click merge. For low-risk projects or sandbox environments, you can opt into auto-merge — and even then, CI and the verify chain (implement → test → fix, up to 3 retries) must pass before anything lands.
Can the AI burn through credits in a runaway loop?
Per-task credit spend is tracked in the Billing Control Plane and visible in your dashboard in real time. The fix_verify loop has per-model retry caps (Claude family 3, Qwen family 6, others 5) as defaults, so infinite loops are structurally prevented. Project-level monthly caps are also configurable.
Will I lose visibility into what the AI is doing?
Purple Codens workflow execution logs record every step the AI ran (analyze, implement, verify, retry, escalation, merge decision) in chronological order. You can see which model did what in what order, and where it switched paths. PR diffs themselves remain reviewable and commentable on GitHub as usual, so the code-change side is visible through your normal review flow.
Will the AI produce code that violates our domain rules?
Drop CLAUDE.md / .claude/rules/ into your repo and Codens always loads them into the prompt. On top of that, mechanically-checkable rules (naming conventions, import order, banned API calls) get blocked deterministically by a layer that sits after AI output and before any merge. The model's judgment isn't the only gate.
Do credentials or production data get fed to the AI directly?
API keys and database connection strings live in AWS Secrets Manager and are accessed only through per-task IAM Roles. Plaintext credentials never reach the model. Destructive production-DB operations (DROP / TRUNCATE / bulk DELETE) are blocked at the workflow layer unless explicitly authorized.
If the AI does break something, can we roll back?
Every change exists as a GitHub PR / commit, so a normal git revert restores the prior state. During the 14-day free trial you can run Codens against a sandbox repo first and expand its scope gradually. For enterprise onboarding, our CSM helps you scope the first project narrowly before widening the surface.

Deeper docs: help.codens.ai/en covers security and operations details.

Cut Your Lead Time by 80% — Starting Today

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Setup takes 30 minutes. Just connect your existing GitHub repos.

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Frequently Asked Questions

Common questions about the Codens suite.

What is Codens?

Codens is an AI development suite from Japan that covers the entire software development lifecycle. Five integrated products — PRD generation (Green), development orchestration (Purple), code review & security audit (Orange), test automation (Blue), and automatic error repair (Red) — let teams build and operate software products without a large team of specialist engineers, cutting lead time by up to 80% and bug recurrence by up to 90%.

Which products are included?

Green (PRD generation), Purple (development orchestration), Orange (code review & security audit), Blue (test automation), and Red (automatic error repair), plus the unified Auth Codens identity provider. Each product works standalone or together as a suite.

How do AI agents use Codens?

MCP-compatible agents such as Claude Code, Cursor, and Cline call 30 tools through a single MCP server (codens-mcp). Agents authenticate with the Device Code Flow (RFC 8628) and run implementation, testing, repair, and PRD generation without any UI navigation.

How does pricing work?

Usage-based credit pricing (1 credit = JPY 0.01). You are billed by task complexity and token usage, and credits are shared across all products within a plan. New organizations receive a credit grant on signup. See the pricing page for details.

Is my data secure?

Codens uses tenant isolation, least-privilege GitHub App scoping, the Device Code Flow, and secure secret management. See the Security FAQ for details.

Can I use Codens without engineers?

Yes. In our PORTAMENT case study, a team of 3 business members plus 1 engineer ran 5 projects in parallel and shipped 1,000+ PRs in 1.5 months. Green Codens structures requests into a PRD, Purple Codens implements them, and engineers are looped in only when needed. Teams can build and operate software products without a large team of specialist engineers.

How is Codens different from Devin?

Devin is a general-purpose agent that acts on instructions. Red Codens triggers automatically from production monitoring (e.g. Sentry) and runs a detect → fix PR → test loop unattended, while Green, Orange, and Blue cover requirements, review, and QA across the whole lifecycle. Codens also offers native Japanese support. See the comparison page for details.

How is Codens different from GitHub Copilot?

GitHub Copilot focuses on in-editor code completion to speed up writing code. Codens is a platform that automates the process around code — auto-fixing bugs after they happen, PR review, test automation, and requirements — so the two serve different roles and can be used together.

Can AI break production?

By default, AI only opens a PR — main never changes until a human clicks merge. Even with auto-merge enabled, CI and a verify chain (implement → test → fix, up to 3 retries) always run, so a PR that fails tests is never merged. Credit consumption has retry caps to prevent runaway loops, and every change lives as a GitHub PR/commit, so you can always git revert. See Common Concerns, Answered for more.

What do I need to get started?

Just an existing GitHub repository — setup takes as little as 30 minutes. Start a 14-day free trial with no credit card required, and use Codens through MCP-compatible agents like Claude Code, Cursor, or Cline, or directly from the browser. For larger rollouts, a dedicated onboarding plan is also available.