kollabor-webui

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

It serves the assistant-ui single-page app, proxies engine configuration to the browser, and connects to the local engine API for sessions, assistant-transport streaming, permission prompts, profiles, MCP, and hub controls.

Architecture

Module/Asset	Responsibility
`src/kollabor_webui/__init__.py`	`kollabor-webui` command entrypoint and uvicorn launcher
`src/kollabor_webui/server.py`	FastAPI config endpoint, Vite assets, and SPA fallback
`frontend/src/`	assistant-ui React/TypeScript source
`frontend/dist/`	local Vite output (ignored; regenerated for package builds)
`src/kollabor_webui/static/`	legacy static fallback and packaged assistant-ui output

The checked-in frontend source is the source of truth. hatch_build.py runs npm ci and npm run build when npm is available, then force-includes Vite's frontend/dist output in a wheel under kollabor_webui/static/assistant. The source checkout also serves frontend/dist directly, which makes editable installs useful without copying generated files into git. Python-only builds continue to serve the legacy static/index.html and static/app.js fallback if Node/npm is unavailable.

Usage

Quickest path — kollab --web-ui spawns the engine and this package together (reusing an already-running engine on 7433 if one is healthy) and cleans both up on Ctrl+C or SIGTERM:

kollab --web-ui

To run the two pieces separately (useful when iterating on one of them):

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()"

Frontend development

cd packages/kollabor-webui/frontend
npm ci
npm run typecheck
npm run build
npm run dev

Vite proxies /api, /sessions, /profiles, /mcp, and /hub to the local engine while developing. The production build uses relative asset paths, so FastAPI can serve hashed assets from any mount path and route client-side navigation back to index.html.

Engine endpoints used

POST /sessions
GET /sessions
DELETE /sessions/{session_id}
POST /sessions/{session_id}/assistant
POST /sessions/{session_id}/cancel
POST /sessions/{session_id}/permission
GET /sessions/{session_id}/permissions
POST /sessions/{session_id}/permissions/mode
GET/DELETE /sessions/{session_id}/history
GET/POST/PUT/DELETE /profiles...
GET/POST/PUT/DELETE /mcp/servers...
GET/POST /sessions/{session_id}/mcp...
GET /hub/agents
POST /hub/messages

Authentication

The browser gets the current engine bearer token from /api/config, which reads ~/.kollab/engine.token. Frontend requests retry once after a 401 by refreshing that config, covering engine restarts that rotate the token.

Validation

python -m py_compile packages/kollabor-webui/src/kollabor_webui/*.py
python -m pytest tests/unit/test_webui_auth_wiring.py -q
cd packages/kollabor-webui/frontend
npm run typecheck
npm run build

License

MIT

Metadata

Release files for kollabor-webui 0.8.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for kollabor-webui 0.8.1
File	Size	Uploaded
kollabor_webui-0.8.1.tar.gz	459.3 kB	Sep 19, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for kollabor-webui 0.8.1
File	Interpreter	ABI	Platform	Reset
kollabor_webui-0.8.1-py3-none-any.whl 343.1 kB Sep 19, 2026	Python 3	none	any	Details

Total release size: 802.4 kB

Release files / kollabor_webui-0.8.1.tar.gz

Download URL	kollabor_webui-0.8.1.tar.gz
Size	459.3 kB
Tags	Source
SHA-256 checksum How to use checksums	`17c2c503d578e8df84cb58f010ad943741fa90e0424e27f44156f4479af16ddb`
BLAKE2b-256 checksum How to use checksums	`ee987c5dd6f97424ef69b24eaae2d595ee05ef7918103541635227369c09a0bc`
Upload date	Sep 19, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / kollabor_webui-0.8.1-py3-none-any.whl

Download URL	kollabor_webui-0.8.1-py3-none-any.whl
Size	343.1 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`d09d9ef790d5735fcdd0f9b5bbd720797a15f8838e86551ffebbe5cae19bd20f`
BLAKE2b-256 checksum How to use checksums	`b0f09ee54dfe3680bbea86f80f56875467f85c69a4bf547ee135171e1a8d36da`
Upload date	Sep 19, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`