stapel-billing
Payments and billing: per-user credit wallets held as expiry-aware credit lots over an immutable ledger, reservations (hold/capture/release) for work priced only after it runs, one-off credit packages and subscription plans, Stripe-backed checkout and customer portal, idempotent webhooks and a service-to-service debit endpoint.
Part of the Stapel framework — composable Django apps that deploy as a monolith or as microservices without changing module code.
Install
pip install stapel-billing
At a glance
| Fact | Value |
|---|---|
| Version | 0.9.1 |
| Python | >=3.11 (3.11, 3.12, 3.13, 3.14) |
| HTTP operations | 10 |
| Config axes | 1 |
| Usage surface | 25 |
| Extension points | 5 |
| Error codes | 55 |
| Fleet dependencies | stapel-auth (optional) · stapel-core |
Documentation
Errors: English · Español · Русский · OpenAPI · capabilities.json · llms.txt (for agents)
Quick start
# settings.py
INSTALLED_APPS = [
...
'stapel_billing',
]
from stapel_billing.tasks import get_billing_beat_schedule
CELERY_BEAT_SCHEDULE = {
**get_billing_beat_schedule(), # credit expiry, hold sweep, reconcile
}
Register the beat schedule (or run the three callables in stapel_billing.tasks
from your own cron): credits granted with an expiry only expire because
something runs. System check stapel_billing.W105 says so if nothing does.
Wallets are lots
A wallet is a set of CreditLot rows — each one knows where its credits came
from (purchase, subscription, grant, adjustment, hold_release) and
when they die (expires_at, NULL = never). Spend walks the lots
expiring-soonest first, so a subscription bundle is used before the
non-expiring credits a customer paid cash for. Wallet.balance is a
maintained cache of that total, recomputed from the lots inside the same row
lock as every mutation.
from stapel_billing import credit, debit, hold, capture, release
from stapel_billing.models import LotSource, TransactionType
credit(user=user, credits=3000, type=TransactionType.SUBSCRIPTION_BONUS,
source=LotSource.SUBSCRIPTION, expires_at=sub.current_period_end)
held = hold(user=user, credits=15, type=TransactionType.AI_CHARGE,
idempotency_key=f"mic:{recording_id}")
try:
used = do_the_work()
except Exception:
release(hold_id=held.id) # credits go back with their original expiry
else:
capture(hold_id=held.id, actual_credits=used)
Bus events
Emits
| payment.completed | schema | A payment transaction completed successfully. |
| subscription.changed | schema | User subscription plan or status changed. |
Consumes
| user.deleted | schema |
| user.deletion_initiated | schema |
License
MIT — see LICENSE.
This page is assembled by stapel-readme from docs/readme.md plus the contract artifacts in docs/. Edit the prose in docs/readme.md; the badges, facts and links above and below it are generated — do not hand-edit README.md.
1 maintainer
Release files for stapel-billing 0.9.1
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Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| stapel_billing-0.9.1.tar.gz | 137.3 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| stapel_billing-0.9.1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 251.0 kB
Release files / stapel_billing-0.9.1.tar.gz
| Download URL | stapel_billing-0.9.1.tar.gz |
|---|---|
| Size | 137.3 kB |
| Tags | Source |
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