DeciBrain for VS Code
A VS Code extension bringing DECICORE's DeciBrain III agent — chat, live data queries, charts, Mermaid diagrams, AI tasks, web research, and email — into the editor.
How sign-in works
Clicking Sign In opens your default browser to a small login page hosted locally by the extension (not the production DECICORE-FrontEnd). That page is branded like DeciphAI but is served by the extension itself — it posts your email/password directly to the DECICORE API (decicore.apiBaseUrl setting) and, on success, hands the resulting token back to VS Code over a loopback callback. Your password never passes through the extension process; only the token does, and it's stored in VS Code's encrypted SecretStorage.
This intentionally does not modify the real DECICORE-FrontEnd or backend — the API accepts plain email/password logins without requiring the browser app's DPoP proof (see AuthManager.ts for the reasoning), and CORS on the backend is open, so this works standalone.
After signing in, if your account has access to more than one project, you'll be asked to pick one — DeciBrain scopes every request to that project via the Core-Project-ID header, same as the web app.
⚠️ API URL
decicore.apiBaseUrl defaults to https://api.decicore.dev. Research into DECICORE-FrontEnd/.env.production at build time showed the actual production backend is https://api.deci-core.com — decicore.dev was not found configured anywhere in the real infrastructure. If sign-in fails with a network/connection error, open VS Code Settings, search decicore.apiBaseUrl, and change it to https://api.deci-core.com.
What's implemented
- Chat with markdown rendering, "thinking" indicator, tool-call cards (expandable, with a full-view modal)
- Inline Chart.js charts, inline Mermaid diagrams (zoom), inline sandboxed HTML previews, inline KPI insight cards
- Session history: list / load / delete past conversations, toggle on/off
- Starter prompts + capability cards on the empty state
- Skills guide modal (static guide + live tool registry from
/api/task-engine/decibrain3/tools)
- Voice input (mic →
/api/voice/transcribe) and auto-speak (browser TTS) — best effort; some VS Code/OS combinations restrict microphone access in webviews
- Export conversation as HTML (opens in your browser — use its Print → Save as PDF for a PDF copy) and email the conversation
Development
npm install
npm run watch # rebuild on change
Press F5 in VS Code (or code --extensionDevelopmentPath=.) to launch the Extension Development Host, then open the DeciBrain icon in the Activity Bar.
Known simplifications vs. the web app
- Login is email + password only — the web app's multi-tenant "select workspace" step is skipped; the backend resolves your tenant by email automatically. If your email exists in more than one tenant with the same password, it picks the first match.
- Mermaid pan/drag and pinch-zoom gestures are simplified to +/− buttons.
- PDF export goes through "export HTML → print from your browser" rather than an in-editor PDF renderer.
