TaskWeaver (6,178 Stars) 2026: Microsoft's Code-First Agent Framework for Data Analysis

TaskWeaver (6,178 stars) is Microsoft's code-first agent framework that turns natural language into Python for data analysis. Here is how to build your first analysis agent.

💡 What You Will Learn

TaskWeaver (6,178 stars) is Microsoft's code-first agent framework that turns natural language into Python for data analysis. Here is how to build your first analysis agent.

📜 Table of Contents

• The short answer
• Why code-first agents win for data
• Quick start
• Building custom plugins
• Practical tips
• FAQ

The short answer

microsoft/TaskWeaver (6,178 stars, Python) is a code-first agent framework from Microsoft. Instead of letting an LLM answer directly, TaskWeaver converts user requests into Python code, executes it in a sandbox, and returns the results - a design that makes it excellent for data analysis, plotting, and file processing tasks.

Why code-first agents win for data

• Precision: code either runs or it does not - no hallucinated tables
• Reuse: generated code can be saved as plugins and called again
• Visualization: matplotlib/seaborn charts are first-class outputs
• Sandboxed: code executes in an isolated environment with guards

Quick start

pip install taskweaver
# Generate the config and workspace
taskweaver --gen_project
cd project
# Edit taskweaver_config.json to add your OpenAI/other API key

Start the console and ask a data question:

taskweaver -p project

>>> Load sales.csv and show monthly revenue as a bar chart

TaskWeaver writes the Python, runs it, shows you the chart and the code.

Building custom plugins

Add a Python file in plugins/ with a documented function - TaskWeaver exposes it to the LLM automatically:

def compute_growth(series):
    """Compute month-over-month growth of a series."""
    return series.pct_change()

Practical tips

• Keep data files in the workspace so the agent can access them reliably.
• Use the plugin mechanism to lock down domain-specific logic.
• Review generated code in the logs - it is part of your audit trail.

FAQ

Is it only for data analysis? It is optimized for it, but the code-first pattern works for any task expressible as code.

Which LLMs does it support? OpenAI, Azure OpenAI, and custom endpoints via configuration.

Is it free? Yes - MIT licensed open source.

❓ FAQ

Is it only for data analysis?

It is optimized for it, but the code-first pattern works for any task expressible as code.

Which LLMs does it support?

OpenAI, Azure OpenAI, and custom endpoints via configuration.

Is it free?

Yes - MIT licensed open source.