Better Prompt

Automatically fixes and improves user prompts before they reach the model.

Supports two CLIs, with the same settings:

• OpenCode → README
• Claude Code → README

See your CLI's README for install steps and the details that matter.

How it works

Every prompt runs through up to three stages, each of which you can switch on or off:

original → [correction] → [translation] → [enhancement] → final

• Correction — fixes grammar and spelling whilst preserving intent, style, and punctuation
• Translation — translates non-English prompts to English; English passes through unchanged
• Enhancement — rewrites for clarity, specificity, and structure

Stages are optional — the plugin works with just correction, just enhancement, or any combination.

Settings

Settings live in a YAML file. The options are the same on both CLIs — only the path differs, so see your CLI's README.

Setting	Default	What it does
enabled	true	Master switch
correction	true	Fix grammar and spelling
correction_model	haiku	Model for correction
translation	false	Translate non-English to English
translation_model	haiku	Model for translation
enhancement	false	Rewrite for clarity
enhancement_model	sonnet	Model for enhancement
audit	true	Keep a log of prompts and changes
verbose	false	Show extra detail

Models — haiku, sonnet, and opus work everywhere. OpenCode can also use the providers you've connected (fast, capable, powerful) or an explicit provider/model ID. See the OpenCode README.

Audit log

With audit on, each prompt is logged as one line of JSON — the original text, each stage's output, the mistakes caught, and the models used. OpenCode adds token usage. Paths and exact fields are in the CLI READMEs.

License

MIT