kollabor-webui 0.5.19

Web UI for Kollab Engine

kollabor-webui

kollabor-webui is the browser UI shell for kollabor-engine.

It serves the static web app, proxies engine configuration to the browser, and connects to the local engine API for sessions, SSE message streams, permission prompts, profiles, MCP, and hub controls.

Current Role

• Serve the single-page web terminal UI from kollabor_webui/static.
• Connect browser sessions to a local engine at KOLLAB_ENGINE_URL.
• Provide multi-session panels, message streaming, cancellation, and export.
• Surface permission prompts and approval mode changes.
• Provide basic profile, MCP, and hub control screens around engine endpoints.

Architecture

Module/Asset	Responsibility
__init__.py	kollabor-webui command entrypoint and uvicorn launcher
server.py	FastAPI app serving config and static assets
static/index.html	web UI shell
static/app.js	engine API client, SSE parser, session UI, controls
static/style.css	visual styling for the web terminal

Usage

Start the engine:

python -m kollabor_engine serve --host 127.0.0.1 --port 7433

Start the web UI:

KOLLAB_ENGINE_URL=http://127.0.0.1:7433 \
KOLLAB_WEBUI_PORT=8080 \
kollabor-webui

Then open:

http://127.0.0.1:8080

For an editable checkout without installed console scripts:

python -c "from kollabor_webui import main; main()"

Engine Endpoints Used

• POST /sessions
• GET /sessions
• DELETE /sessions/{session_id}
• POST /sessions/{session_id}/message
• POST /sessions/{session_id}/cancel
• POST /sessions/{session_id}/permission
• POST /sessions/{session_id}/permissions/mode
• GET/POST/PUT/DELETE /profiles...
• GET/POST/PUT/DELETE /mcp/servers...
• GET/POST /sessions/{session_id}/mcp...
• GET /hub/agents
• POST /hub/messages
• WS /ws/hub/feed

Known Gaps

• The UI depends on engine behavior that is still being hardened, especially workspace enforcement, MCP connect behavior, and profile redaction.
• The current visual style is an early terminal-like shell, not yet a polished product UI.
• Error handling is mostly client-side string display; richer typed engine errors would improve UX.
• WebSocket hub streaming still depends on engine polling behavior.

Roadmap

Phase 1: Track engine hardening

• Update UI flows after engine profile redaction, workspace enforcement, and real MCP connect behavior land.
• Improve permission prompt state for timeout, denial, retry, and scopes.
• Add smoke coverage for session creation, message SSE, permissions, and MCP controls against a temporary engine config.

Phase 2: UX maturity

• Replace one-off UI strings with structured state and reusable view components.
• Improve profile/MCP forms and validation feedback.
• Add clearer connection/token setup and recovery flows.

Phase 3: Hub and multi-session polish

• Use live hub events once the engine stream is no longer snapshot/polling based.
• Add richer agent status, output, and message controls.
• Persist useful browser-side preferences without storing secrets.

Development

Targeted validation examples:

python -m py_compile packages/kollabor-webui/src/kollabor_webui/*.py
python -m pytest tests/test_engine_health_api.py -q

Dependencies

• kollabor-engine
• fastapi >= 0.115
• uvicorn[standard] >= 0.32

License

MIT