Python SDK

montek on PyPI, sync and async, typed with pydantic.

pip install montek

from montek import Montek

montek = Montek(api_key=os.environ["MONTEK_API_KEY"])  # api_key defaults to MONTEK_API_KEY

r = montek.extract(file="order.pdf", model="langbiang-extract-1.0", lang="ja", fields=["order_number"])
r.fields; r.line_items; r.usage.count

job = montek.cad.create(file="sketch.jpg", model="fansipan-cad-1.0")
done = job.wait()  # polls with backoff; or use a webhook
dxf = montek.cad.get_part(done.id, 1)  # the first part, as DXF text

montek.usage.get(from_="2026-10-01", to="2026-10-31")
montek.models.list()
montek.me()  # the key, its project and organization, webhook secret and plans

The async client has the same methods:

from montek import AsyncMontek

async with AsyncMontek() as montek:
    r = await montek.extract(file="order.pdf", model="langbiang-extract-1.0")

Errors and retries

AuthError (401, 403), NoPlanError (402), RateLimitError (429), ValidationError (other 4xx) and ServerError (5xx). 429 and 5xx are retried with backoff, following Retry-After; every POST carries an Idempotency-Key.

Webhooks

from montek import verify_webhook

event = verify_webhook(raw_body, headers["Montek-Signature"], os.environ["MONTEK_WEBHOOK_SECRET"])

The source and changelog are public, in the montek-sdk-python repository.