lab-link 0.2.0

Generic server-authoritative sync library for FastAPI

lab-link Python

FastAPI/Pydantic backend runtime and Python sync client for lab-link.

Use it to register authoritative state, expose a WebSocket sync endpoint, run commands with hardware side effects, broadcast versioned JSON Patch updates, or control a lab-link server from Python.

uv add lab-link

from lab_link import LabSync

sync = LabSync()
sync.register_state(AppState, initial=state)
app = sync.create_app()

from lab_link import LabLinkClient

with LabLinkClient("ws://127.0.0.1:8000/sync/ws") as sync:
    snapshot = sync.snapshot()
    ack = sync.send_command("set_voltage", {"path": "/channels/0/bias_voltage", "value": 1.2})

Full docs: https://sansseriff.github.io/lab-link/