Type what you want in plain English, get an executable jq filter — without your JSON ever leaving your machine. Built for the JSON you can’t send to a cloud API: production payloads, logs with PII, anything under NDA. Also understands Brazilian Portuguese.

Usage

The system prompt and temperature come preconfigured — just type your request followed by a small JSON sample (the model reads field names and shapes from it):

ollama run D0minuZ/jq-coder
>>> get the id of every order
... JSON sample: {"orders":[{"id":1,"status":"done"}]}
.orders[] | .id

More examples, all verified by executing the generated filter with real jq:

• “get the id of every order” → .orders[] | .id
• “keep only the orders whose status is done” → [.orders[] | select(.status == "done")]
• “some o total de todos os pedidos” → [.orders[].total] | add
• “remova o campo total de cada pedido” → del(.orders[].total)

Good to know

• Always include a JSON sample — the model was trained to copy field names from it; without one it will hallucinate fields.
• It outputs a jq filter, not a shell command: pipe it into jq yourself, or use the jqc CLI — a single binary that generates the filter and runs it for you.
• Review destructive filters (del, assignments) before applying them to data you care about.

Links

• Model card, GGUF files and full evaluation
• jq-bench — execution-verified benchmark
• jqc CLI — prebuilt binaries for Windows, Linux and macOS

0.6B full fine-tune of Qwen3-0.6B-Base · weights CC BY 4.0