Released on March 6, 2026, prompt2json v0.6.0 is all about reliability. This update introduces a powerful “pre-flight” check that ensures your JSON schemas are compatible with your chosen LLM provider before a single byte is sent over the wire. By catching schema errors locally, we’re helping you eliminate wasteful API calls and reduce the frustration of runtime failures.

What’s new

Schema Profile Validation

The standout feature of v0.6.0 is the integration of schema profiles. Different LLM providers support different subsets of the JSON Schema specification. To prevent the “trial-and-error” approach to schema design, prompt2json now validates your schema against provider-specific profiles (like OPENAI_202602 and GEMINI_202602) before making any API calls.

If your schema contains constructs that the provider doesn’t support, the tool will now alert you immediately on your terminal, allowing you to fix the issue without wasting API credits or waiting for a timeout.

Precise Control with --schema-profile

While the tool automatically selects the best profile based on your provider, we’ve added the --schema-profile flag for those who need manual control. This is particularly useful when using OpenAI-compatible endpoints to call other models (such as using the openai provider to target Gemini via Vertex AI), where you can explicitly set the profile to GEMINI_202602 to ensure absolute compatibility.

Flexibility for Local Development

For developers working in local or restricted environments, we’ve introduced the --insecure flag. This allows you to skip TLS certificate verification, making it significantly easier to connect to local LLM instances (like Ollama) or development proxies that use self-signed certificates.

Why it matters

Structured output is the backbone of automated workflows, but it’s often the most fragile part. A single unsupported keyword in a JSON schema can crash a production pipeline. By moving validation from the cloud to your local machine, prompt2json v0.6.0 turns those catastrophic runtime errors into simple, fixable local warnings.

Beyond reliability, the addition of the --insecure mode acknowledges the reality of modern AI development, where local experimentation is just as important as cloud deployment.

Get started with v0.6.0

Updating to the latest version is simple. Run the following command to install v0.6.0:

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

Whether you’re building complex data extraction pipelines or simple automation scripts, v0.6.0 provides the guardrails and flexibility you need to build with confidence.

This post was AI-generated using the model unsloth/gemma-4-31B-it-GGUF:UD-Q5_K_XL. It was created on April 13, 2026, based on the prompt2json repository and its v0.6.0 release. Author: release-storyteller