statewire
The Statewire protocol for Python: a Statewire host owns one JSON state dict, streams every change to attached clients as ops, and dispatches typed commands back. Part of harness-sdk, with harness-sdk and pinned.
Install
uv add statewire
Extras: uv add "statewire[langgraph]", uv add "statewire[orjson]".
Use
from fastapi import FastAPI
from pinned import PinnedHost, PinnedWorker
from statewire import Statewire, StatewireReject, command
class Counter(Statewire):
async def lifespan(self):
self.state = {"count": 0}
yield
@command
async def increment(self):
if self.state["count"] >= 10:
raise StatewireReject("the counter is full (max 10)")
self.state["count"] += 1
worker = PinnedWorker()
app = FastAPI()
app.include_router(worker)
app.include_router(PinnedHost(Counter, worker=worker, namespace="/threads"))
Protocols and documents
Connections negotiate date ranges through Statewire-Version and Statewire-Protocol. Protocols are additive and required by default. The server selects versions in syn; WebSockets use statewire.v1.
Each protocol owns its commands, context documents, and state documents. The main document is independent of its optional read key. Command sequences and replay remain shared across protocols. Python hosts support lazy, chained compatibility adapters.
See the protocol registration and migration guide.
Docs
- Get started: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/statewire/docs/get-started/statewire/page.mdx
- Guide: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/statewire/docs/guides/statewire/host/page.mdx
- Reference: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/statewire/docs/reference/statewire-python/page.mdx
- Spec: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/statewire/docs/spec/statewire-protocol/page.mdx
1 maintainer
Metadata
1 maintainer
Release files for statewire 0.17.1
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
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|---|---|---|---|---|
| statewire-0.17.1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 169.8 kB
Release files / statewire-0.17.1.tar.gz
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| Tags | Python 3 |
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