Foundry DevTools

Foundry DevTools#

Seamlessly run your Palantir Foundry Repository transforms code and more on your local machine. Foundry DevTools is a set of useful libraries to interact with the Foundry APIs. It consists of two parts:

  • ~~The~~ ~~transforms~~ ~~implementation~~

    • ~~An implementation of the Foundry transforms package that internally uses the CachedFoundryClient. This allows you to seamlessly run your Palantir Foundry Code Repository transforms code on your local machine. Foundry DevTools does not cover all of Foundry’s features, more on this here.~~

    • The Palantir extension for Visual Studio Code has achieved the goals of the transforms implementation and should be used instead. The transforms implementation in foundry-dev-tools is no longer maintained.

  • API clients

    We implemented multiple clients for many foundry APIs like compass, catalog or foundry-sql-server.

    • For example:

      from foundry_dev_tools import FoundryContext

# the context, that contains your credentials and configuration
ctx = FoundryContext()

df = ctx.foundry_sql_server.query_foundry_sql("SELECT * FROM `/Global/Foundry Training and Resources/Example Data/Aviation Ontology/airlines`", branch='master')
df.shape
# Out[2]: (17, 10)

    • FDT can also act as the auth provider for foundry-platform-sdk and any TPA-specific OSDK package. Install the optional dependency first:

      pip install 'foundry-dev-tools[public]'

      Use the built-in foundry-platform-sdk client:

      import pyarrow as pa
import polars as pl
from foundry_dev_tools import FoundryContext

ctx = FoundryContext()
client = ctx.public_client_v2
ds = client.datasets.Dataset.read_table("<dataset-rid>", format="ARROW")
df = pl.from_arrow(pa.ipc.open_stream(ds).read_all())

      Or pass FDT’s auth to any TPA OSDK client:

      from foundry_dev_tools import FoundryContext
from my_tpa_sdk import FoundryClient  # your generated OSDK package

ctx = FoundryContext()
client = FoundryClient(auth=ctx.public_auth, hostname=ctx.host.domain)

Quickstart#

With pip:

pip install foundry-dev-tools

With conda or mamba on the conda-forge channel:

conda install -c conda-forge foundry-dev-tools

Further instructions can be found in our documentation.

Why did we build this?#

  • Local development experience in your favorite IDE (PyCharm, VSCode, …)

    • Access to modern developer tools and workflows such as ruff, mypy, pylint, black, pre-commit hooks etc.

  • Quicker turnaround time when making changes

    • Debug, change code and run in a matter of seconds instead of minutes

  • No accidental or auto commits

    • Keep your git history clean

License#

Copyright © 2026 Merck KGaA, Darmstadt, Germany

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

The full text of the license can be found in the LICENSE file in the repository root directory.

Indices and tables#

Contents