tool

type Def ¶

type Def struct {
	Name        string
	Description string
	Binary      string
	Args        []string
	Doc         string
}

type Input ¶

type Input struct {
	Args  []string `` /* 138-byte string literal not displayed */
	Stdin string   `` /* 174-byte string literal not displayed */
}

Input is the BIN tool call shape exposed to the LLM. Fantasy reflects this struct into a JSON schema, so the model sees `args` and `stdin` as named fields and picks whichever the tool needs.

Both fields are optional. Tools that take only argv use `args` and ignore `stdin`; tools whose meaningful input flows over stdin (`yaegi run -`, `pandoc`, `markitdown`, …) use `stdin` (often alongside a small `args` like `["run", "-"]`). At least one of them is required — empty calls are rejected so the model gets immediate feedback rather than the binary's own help text.