AI Tools 71% 1 min readJul 2, 2026, 6:25 PM

Using DSPy to evaluate and improve Datasette Agent's SQL system prompts

30-second summary

A new research project applies DSPy to refine the system prompts used by Datasette Agent's SQL generation, improving reliability and performance.

Key takeaways
  • DSPy is being used to evaluate and optimize the system prompts for Datasette Agent's SQL generation.
  • The research demonstrates how automated prompt optimization can improve the reliability of AI-driven data querying tools.
  • The project leverages asynchronous research workflows with tools like Claude Code and Claude Fable 5.
  • Prompt quality is a critical factor in the accuracy and usability of natural language interfaces for databases.
Full story

Researcher Simon Willison has published a study demonstrating how DSPy, an optimization framework from Stanford NLP, can be used to evaluate and improve the system prompts that power Datasette Agent's SQL generation capabilities. The project involved an asynchronous research task using Claude Code and Claude Fable 5 to assess and refine the prompts, which are critical for translating natural language queries into accurate SQL commands.

The research highlights the potential of DSPy's automatic prompt optimization techniques to enhance the reliability of AI-driven data querying tools. By systematically evaluating prompt performance, the approach aims to reduce errors and improve the quality of generated SQL, making tools like Datasette Agent more effective for users who rely on natural language interfaces to interact with databases.

This work is particularly relevant in the context of growing interest in AI-powered data tools, where prompt quality directly impacts the accuracy and usability of systems that bridge human intent and technical execution.

Source: Using DSPy to evaluate and improve Datasette Agent's SQL system prompts. Read the full piece at the source.

Why this matters
Developers

Developers working on AI-driven data tools can learn from this approach to improve prompt design and evaluation.

Everyone

This research underscores the importance of prompt optimization in AI systems that interact with databases.

Glossary
DSPy
A framework from Stanford NLP for optimizing prompts in language models using automatic techniques.
Datasette Agent
An AI-powered tool that translates natural language queries into SQL commands for database interaction.
Sources · 1
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