Mercury v3

v3.1.2 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 12d Developer Productivity

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

data-science data-visualization jupyter jupyter-lab jupyter-notebook mercury

+8 more

mljar-mercury notebook notebook-application notebook-jupyter notebook-publish notebook-web notebooks-jupyter python

ReleasePort's take

Moderate signal

editorial:auto 12d

Version v3.1.2 of Mercury adds a --working-dir flag to the CLI and resolves a bug where mr.Stop() lacked its required import.

Why it matters: Fixes mr.Stop() missing import (fact id 23878) enabling correct module termination; enhances local server startup for multi‑folder projects via --working-dir (fact id 23876).

Summary

AI summary

Fixed mr.Stop() usage by adding a missing import.

Changes in this release

Type	Severity	Summary	CVE
Feature	Medium	Adds --working-dir flag to Mercury for loading notebooks and config.toml from selected base directory, improving local server startup for multi-folder projects Adds --working-dir flag to Mercury for loading notebooks and config.toml from selected base directory, improving local server startup for multi-folder projects Source: llm_adapter@2026-05-23 Confidence: high	—
Performance	Medium	Improves Table readability when many columns are shown by preventing columns from becoming too narrow Improves Table readability when many columns are shown by preventing columns from becoming too narrow Source: llm_adapter@2026-05-23 Confidence: high	—
Bugfix	Medium	Fixes mr.Stop() usage by addressing the missing import for Stop Fixes mr.Stop() usage by addressing the missing import for Stop Source: llm_adapter@2026-05-23 Confidence: high	—

Full changelog

#Fixes

Added --working-dir to let Mercury load notebooks and config.toml from a selected base directory, improving local server startup for multi-folder projects (#549)
Improved Table readability when many columns are shown by preventing columns from becoming too narrow (#546 )
Fixed mr.Stop() usage by addressing the missing import for Stop (#544)

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