pinned
Durable objects for Python: one live instance of your class per id across a fleet, activated on the first request, with its own HTTP surface. Part of harness-sdk, with statewire and harness-sdk.
Install
uv add pinned
Extras: uv add "pinned[postgres]", uv add "pinned[psutil]".
Use
from fastapi import FastAPI
from pinned import PinnedAPI, PinnedHost, PinnedWorker, route
from pinned.durability import MemoryStateStore
class Counter(PinnedAPI):
async def lifespan(self):
self.count = 0
yield
@route.post("/increment")
async def increment(self):
self.count += 1
return {"id": self.id, "count": self.count}
worker = PinnedWorker(state_store=MemoryStateStore())
app = FastAPI()
app.include_router(worker)
app.include_router(PinnedHost(Counter, worker=worker, namespace="/counters"))
Docs
- Get started: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/docs/get-started/durable-host/page.mdx
- Guide: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/docs/guides/pinned/authoring/page.mdx
- Reference: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/docs/reference/pinned/page.mdx
- Spec: https://github.com/assistant-ui/harness-sdk/blob/main/apps/docs/app/docs/spec/pinboard-registry/page.mdx
1 maintainer
Metadata
1 maintainer
Release files for pinned 0.15.1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| pinned-0.15.1.tar.gz | 159.9 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pinned-0.15.1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 265.4 kB
Release files / pinned-0.15.1.tar.gz
| Download URL | pinned-0.15.1.tar.gz |
|---|---|
| Size | 159.9 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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|
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BLAKE2b-256 checksum How to use checksums |
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| Uploaded via |
twine/7.0.0 CPython/3.13.14
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Transparency logRelease files / pinned-0.15.1-py3-none-any.whl
| Download URL | pinned-0.15.1-py3-none-any.whl |
|---|---|
| Size | 105.5 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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BLAKE2b-256 checksum How to use checksums |
e58ab10f07a97d04a206cc902dcd1f208853c5ed705e6d12b747afdc334a04db
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| Upload date | |
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Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
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PyPI Publish Attestation
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Signed by GitHub Actions, verified by PyPI on Sep 8, 2026.
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