Dubleu
Always shipping

Changelog

Every update, improvement, and new feature we ship — in reverse chronological order. No marketing speak, just what changed and why.

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Key:
New
Improved
Fixed
Removed
MajorFeatureImprovementFixInfrastructure
Majorv0.9.0March 28, 2026

Agent Mode — autonomous multi-step builds

The biggest update since launch. Agent Mode lets Dubleu plan, write, migrate, and deploy an entire feature end-to-end without you lifting a finger.

  • New
    Agent Mode toggle (⚡) in chat header — enables autonomous multi-step execution
  • New
    .tasks/ file system — plan.md, active.md, log.md track every agent session
  • New
    needs_input pause — agent stops and asks when it genuinely needs a decision
  • New
    Self-correction loop — fixes TypeScript errors before moving to the next task
  • New
    Cross-file awareness — reads existing components before writing new ones
  • Improved
    Deploy detection is now stack-aware: Next.js → Vercel, static → Netlify, Expo → EAS
  • Improved
    SQL migrations now run in sequence with RLS applied automatically after each table
Featurev0.8.2March 14, 2026

MCP integrations — GitHub, Linear, Stripe & more

Model Context Protocol support is live. Connect any MCP-compatible server and the agent can interact with your tools directly from chat.

  • New
    MCP server connections — org-scoped or project-scoped
  • New
    Built-in catalogue: GitHub, Linear, Stripe, Slack, Notion, Supabase, Sentry and more
  • New
    Agent auto-suggests MCP connections when a task would benefit from one
  • New
    mcp-connect block rendered inline in chat with one-click auth flow
  • Improved
    Figma MCP connected by default for all new projects
Majorv0.8.0February 28, 2026

Blueprint Mode — design before you code

Blueprint Mode draws a visual wireframe of your UI before writing a line of code. Approve or edit the layout, then Dubleu builds exactly what you approved.

  • New
    Blueprint renderer — labeled rectangles and flow arrows rendered in the chat panel
  • New
    Blueprints saved to .tasks/blueprints/ for future reference across sessions
  • New
    Edit-before-build flow — modify the wireframe in chat before code generation starts
  • New
    Auto-triggers for significant UI changes with 4+ new components
  • Improved
    Blueprint coordinate system calibrated to 800×500px canvas
  • Fixed
    Blueprint arrows now render correctly when from/to points share an axis
Featurev0.7.5February 14, 2026

Image generation via fal.ai Flux

Generate hero images, illustrations, and visual assets directly into your project — no external tools, no copy-pasting.

  • New
    generate-image block — emit from agent or on-demand from chat
  • New
    Flux Dev model by default — high quality, fast generation
  • New
    Size presets: landscape_4_3, square_hd, portrait_4_3, landscape_16_9
  • New
    Generated images land directly in public/ and are immediately referenceable in code
Majorv0.7.0January 31, 2026

Supabase database integration

Provision a full Postgres database in one message. Migrations run, RLS applied, credentials injected to Vercel — all without leaving the chat.

  • New
    ~~~db provision block — spins up a Supabase project automatically
  • New
    ~~~db sql block — runs migrations in sequence from agent mode
  • New
    DUBLEU_DB_URL, DUBLEU_DB_ANON_KEY, DUBLEU_DB_SERVICE_KEY as Vercel env vars
  • New
    Row-level security applied automatically after every CREATE TABLE
  • Improved
    Auth flows — agent now writes Supabase Auth UI components on request
Improvementv0.6.3January 17, 2026

Skills system overhaul

Skills are now first-class citizens — smarter, faster, and automatically triggered when the task matches.

  • New
    /ship skill — full review → fix critical issues → deploy in one command
  • New
    /responsive skill — makes any page fully mobile-responsive
  • New
    /prd skill — generates a product requirements doc from the codebase
  • Improved
    /fix skill now identifies root cause before suggesting a fix
  • Improved
    /design skill now uses Blueprint Mode for large layout changes
  • Fixed
    /refactor no longer strips JSDoc comments from functions
Featurev0.6.0January 3, 2026

Canvas Mode — live visual diagrams

Create architecture diagrams, ER diagrams, user flows, and any visual document as .canvas/*.json files — rendered live in the editor panel.

  • New
    Canvas renderer — Figma-like visual canvas from JSON schema
  • New
    Node types: frame, rect, text, ellipse, badge, image, divider, arrow
  • New
    .canvas/*.json files auto-rendered when opened in editor
  • New
    Agent creates architecture.json automatically during system planning
Fixv0.5.1December 19, 2025

Performance & stability fixes

A focused stability release addressing the most-reported issues from the public beta launch.

  • Fixed
    WebContainer cold start time reduced from 8s to 2.1s average
  • Fixed
    File tree no longer collapses after agent writes a new file
  • Fixed
    Monaco IntelliSense now resolves path aliases (@/*) correctly
  • Fixed
    Preview iframe no longer goes blank on hot reload in Turbopack mode
  • Improved
    Terminal panel now persists scroll position between sessions
Majorv0.5.0December 12, 2025

Public beta — Dubleu is open

After 6 months of private alpha with 200 makers, Dubleu is open to everyone. Free plan available, no credit card required.

  • New
    Public sign-up at apps.dubleu.app — no waitlist
  • New
    Free plan: 3 projects, 100 AI messages/month, Vercel deploy on shared domain
  • New
    Pro plan: unlimited projects, unlimited AI messages, custom domains, $19/mo
  • New
    Team plan: 5 seats, shared workspace, SSO, dedicated Slack support, $49/mo
  • New
    User feedback widget — end-users annotate and submit screenshots from deployed app
  • New
    PostHog analytics and Sentry error monitoring initialised on every Pro deploy

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