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"))

Docs

Project links

Data verified by PyPI on Sep 4, 2026
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Key dates

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  • Released:
Newer release available (0.16.1)

1 maintainer

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Avatar for Yonom from gravatar.com Yonom

GitHub Statistics

Data verified by PyPI on Sep 4, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
View SPDX License List

Requires

Python <4.0, >=3.12

Provides Extra

langgraph orjson

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