Add --output-format json for structured output

[blackgirlbytes]

This is a feature request from @middlew4y on Discord

Please explain the motivation behind the feature request.
goose run only outputs plain text, making it hard to parse tool calls and responses programmatically.

Describe the solution you'd like
Similar to Claude Code's --output-format json functionality, add --output-format json flag to output structured data

goose run --output-format json --text "analyze this code"

should output

{
  "messages": [...],
  "tool_calls": [...],
  "responses": [...],
  "metadata": {"total_tokens": 1250, "status": "completed"}
}

• I have verified this does not duplicate an existing feature request

[Evanfeenstra]

Thanks for adding this issue! stream-json output format would be great also, rather than just one big JSON output at the end. Like streaming json objects to stdout

{"type": "tool_call", ...}
{"type": "message", "role": "assistant", ...}

etc etc

This way you could easily build other kinds of UI on top of goose

[DOsinga]

you should be able to get this to work by running a recipe

[aazam-gh]

I would like to work on this!

[blackgirlbytes]

thank you so much. go for it. if you end up picking up future issues..you can self assign the issue in your repo..by commenting .take

[github-actions]

The issue you are trying to assign to yourself is already assigned.

[aazam-gh]

Gotcha

[Roshansingh9]

Hi @blackgirlbytes, I’d like to contribute to this issue if it’s still available. Could you please assign it to me? Thanks!

[blackgirlbytes]

Hi, @Roshansingh9 . Thanks for your interest! It looks like @aazam-gh originally asked to be assigned to this, so I want to give them time to work on this issue. If it turns out they don't want this issue anymore then you can pick it up. But in the mean time, you can check here for more Hacktoberfest issues: #4705

Please read it in detail to learn how to self-assign yourself to a ticket. You will not need me to assign you.

Thanks!

[taniacryptid]

Hi @aazam-gh - wanted to check on your progress with this issue and see if you needed any help :)