Released on May 23, 2026, prompt2json v0.6.1 is a maintenance and documentation update focused on improving the reliability of structured LLM outputs and standardizing how the tool reports its environment. While this release doesn’t introduce new features, it provides critical refinements that help users build more deterministic automation pipelines.

What’s new

This release introduces several quality-of-life improvements and best-practice updates:

  • Standardized Version Reporting: The --version flag now provides a comprehensive snapshot of the binary’s environment. In addition to the version number, it now outputs the Go runtime version, operating system, and CPU architecture, making it easier to debug environment-specific issues.
  • Refined JSON Schema Examples: We have updated our documentation and examples to include "additionalProperties": false within JSON schemas. This explicit constraint instructs LLMs to strictly adhere to the defined schema, reducing the likelihood of “hallucinated” extra fields.
  • Expanded Schema Profile Guidance: Updated documentation in docs/USAGE.md now provides explicit guidance on schema profiles (such as OPENAI_202602), clarifying the requirement for declaring all properties as required and disabling additional properties for maximum reliability.

Why it matters

For users integrating LLMs into shell scripts and data pipelines, predictability is everything. By adopting the "additionalProperties": false pattern in our examples and documentation, we are helping users leverage the full power of structured output features in modern LLM APIs. These changes reduce parsing errors and ensure that the JSON returned by the model is exactly what your downstream tools expect.

Additionally, the improved version metadata ensures that when you’re troubleshooting a production pipeline, you have the exact build details at your fingertips.

Upgrade and Installation

Upgrading to v0.6.1 is straightforward. You can update to the latest version using the Go toolchain:

go install github.com/UnitVectorY-Labs/prompt2json@latest

There are no breaking changes in this release, so your existing scripts and schemas will continue to work without modification.

This post was AI-generated using the model unsloth/gemma-4-31B-it-GGUF:UD-Q5_K_XL. Reference: UnitVectorY-Labs/prompt2json release v0.6.1 generated on May 24, 2026. Author: release-storyteller