This is a high level list of the most notable changes. Refer to the changelog for more details.Documentation Index
Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
Use this file to discover all available pages before exploring further.
0.9.15
Released on May 29, 2026.Summary
Improvements
Atoti UI development build
Atoti UI is served using its development build when__debug__ is True.
- While prototyping (for instance when working on a new
app extension), the default behavior serves the development build for better debuggability. - In production, running Python in optimized mode sets
__debug__toFalsewhich in turn serves the faster production build.
0.9.14
Released on April 17, 2026.Summary
New features
OpenTelemetry instrumentation
The main functions and methods of the library emit OpenTelemetry spans. Seeatoti_observability for example traces.
The spans help identify where time is spent while building the data model of a Session and loading data into it.
Applications are encouraged to create their own OpenTelemetry spans around their own key operations instead of relying on primitives such as timeit.
0.9.13
Released on March 10, 2026.Summary
New features
New switch mode
Passmode="hierarchy" shift() to drive the shift by the members of the hierarchy instead of by the values of the input measure in the query result.
Distributed tracing
atoti-observability shows how to configure OpenTelemetry to export both the Atoti Python SDK and Atoti Server spans to the same trace.
Improvements
Cloud storage packages renamed
To avoid confusion with the upcoming Atoti Intelligence plugins, the cloud storage plugins have been renamed to better reflect their purpose:atoti-aws→atoti-storage-awsatoti-azure→atoti-storage-awsatoti-gcp→atoti-storage-aws
FutureWarning.
0.9.12
Released on January 23, 2026.Summary
Improvements
Parquet source offloaded to a plugin
The Java dependencies required to load Parquet files are heavy (tens of MBs). To avoid bloating projects that do not use Parquet files, the support for loading Parquet files has been moved to theatoti-parquet plugin.
For retro-compatibility the plugin is installed by default until the next breaking release.
Default to query timeout defined server-side
Unless specified otherwise,atoti.Session.query_mdx() and atoti.Cube.query() will use the timeout defined in shared_context instead of a hardcoded default of 30 seconds.
0.9.11
Released on December 16, 2025.Summary
New features
Hierarchy description
Theatoti.Hierarchy.description property allows configuring the description of a hierarchy to help end users understand its purpose.
Improvements
Faster security configuration
The security configuration is kept in memory for faster access, both when editing it and when executing queries.0.9.10
Released on October 31, 2025.Summary
New features
Python 3.14
Added support for Python 3.14.0.9.9.2
Released on October 20, 2025. Special bugfix and improvement release. Refer to the changelog for more details.0.9.9.1
Released on September 30, 2025. Special bugfix and improvement release. Refer to the changelog for more details.0.9.9
Released on September 22, 2025.Summary
New features
HTTP client
atoti.Session.client provides:
http_client: an HTTP client able to make authenticated HTTP requests on Atoti Server.get_path_and_version_id(): a utility to get the path to a specific endpoint.
Custom measures
plugin_measure() allows defining measures based on Java measure plugins contributed through extra_jars.
Spring Boot Admin
Spring Boot Admin plugin exposes a web interface to monitor resource usage, manage loggers, interact with JMX beans, and more.
Improvements
Smarter session URL detection in JupyterLab extension
atoti.Session.link and atoti.Session.widget more reliably detect the URL at which they can connect to the session from the browser running JupyterLab.
0.9.8
Released on August 12, 2025.Summary
New features
Proxy
atoti.Session.proxy provides a way to forward requests made to Atoti Server to another server.
This is used internally by atoti.Session.endpoint().
Improvements
Increased generated JWT key pair size
Whenatoti.JwtConfig.key_pair is None, the automatically generated key pair will use 3072 bits instead of the old 2048 bits.
0.9.7
Released on July 01, 2025.Summary
New features
Role-based hierarchy visibility
atoti.Hierarchy.viewers can be changed to control which user can see each hierarchy in Atoti UI (or other compatible clients).
Hierarchy organization through folders
atoti.Hierarchy.folder can be changed to indicate to Atoti UI (or other compatible clients) in which data model folder each hierarchy should be displayed.
Improvements
Pre-aggregate all measures
Settingatoti.AggregateProvider.measures to None will pre-aggregate all eligible measures.
0.9.6
Released on May 17, 2025.Summary
- Distributed data overlap
- Distributed data rollover
- Context manager to unlock experimental features
- Query filter on hierarchy members
- Dense date shift
New features
Distributed data overlap
allow_data_duplication makes it possible to have several data cubes with duplicated data.
Distributed data rollover
unload_members_from_data_cube(), paired with the data overlap feature, can be used to move data from one cube to another seamlessly (without downtime).
Context manager to unlock experimental features
experimental() provides granular selection of allowed experimental features.
Improvements
Query filter on hierarchy members
Previously, hierarchy conditions passed toatoti.Cube.query()’s filter parameter only accepted member paths.
This release allows passing hierarchy conditions on members too.
Dense date shift
date_shift() has a new dense parameter to get values even when the input measure has no contribution on the original date.