mona

Official Python SDK for MonaDB. Sync and async, built on httpx and pydantic.

Note: install the PyPI distribution mona-preview while the mona name is being acquired. The import package is always mona. Do not install mona-preview and mona in the same environment.

Install

pip install mona-preview

From source:

git clone https://github.com/rchowell/mona-python.git
cd mona-python
pip install -e .

Usage

from mona import Client

mo = Client(api_key="mk-...", base_url="https://mona.example.workers.dev")

mo.databases.create(name="beatles")

db = mo.database("beatles")
db.execute("create table beatles;")
db.insert(
    "beatles",
    {"name": "John"},
    {"name": "Paul"},
    {"name": "George"},
    {"name": "Ringo"},
)

rows = db.fetchall("select * from beatles;")
print(rows)
# [{"name": "John"}, {"name": "Paul"}, {"name": "George"}, {"name": "Ringo"}]

database("name") returns a handle for running SQL. Use insert for rows, execute for DDL and other statements (one statement or a batch), and fetchall to read rows back. Chain calls work too:

rows = db.execute("select * from beatles;").fetchall()

Control-plane helpers (create, list, get, delete) stay on client.databases.

Async

from mona import AsyncClient

async with AsyncClient(api_key="mk-...", base_url="https://mona.example.workers.dev") as mo:
    await mo.databases.create(name="beatles")
    db = mo.database("beatles")
    await db.execute("create table beatles;")
    await db.insert(
        "beatles",
        {"name": "John"},
        {"name": "Paul"},
        {"name": "George"},
        {"name": "Ringo"},
    )
    rows = await db.fetchall("select * from beatles;")

Configuration

Errors

All errors subclass mona.MonaError. API errors (mona.APIError and its subclasses AuthenticationError, BadRequestError, NotFoundError, ConflictError) carry status_code, code, and message.

Development

just test              # unit tests only
just lint              # ruff
just typecheck         # mypy
just build             # wheel + sdist

Publishing

GitHub release tags (e.g. v0.1.0-preview) and the PyPI version in src/mona/_version.py (e.g. 0.1.0) are set independently. Preview tags on GitHub, semver on PyPI.

1. Bump src/mona/_version.py (PyPI version).
2. Create a GitHub release with a preview tag (e.g. v0.1.0-preview), or run just publish locally with UV_PUBLISH_TOKEN set.
3. On PyPI, add a trusted publisher for mona-preview pointing at rchowell/mona-python (recommended over long-lived API tokens).