Struct ProviderCapabilities 

pub struct ProviderCapabilities {
    pub composes_native_output_with_tools: bool,
}

Provider behavior that affects how runtimes prepare completion requests.

Capabilities are immutable facts about a model implementation rather than per-request state, so a runtime can snapshot this value when it erases a concrete model instead of retaining a callback into the provider.

Prefer building from ProviderCapabilities::new or Default and enabling flags with the with_* methods: that form keeps external implementations compiling when new capabilities are added, where a struct literal does not.

Fields

composes_native_output_with_tools: bool

Whether this provider’s native structured output (output_schema -> format/response_format) composes with tool calls in the same multi-turn request without suppressing them.

false is the safe assumption: the native constraint may make the model emit schema JSON instead of calling its tools — see issue #1928. Providers that enforce structured output and tool use together (e.g. OpenAI, Anthropic) set this to true, which lets runtimes keep guaranteed native structured output active when tools are present.

Implementations

impl ProviderCapabilities

pub const fn new() -> Self

Create the conservative capability set used by default.

pub const fn with_native_output_tool_composition(self, supported: bool) -> Self

Declare whether native structured output composes with tool calls.

Trait Implementations

impl Clone for ProviderCapabilities

fn clone(&self) -> ProviderCapabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ProviderCapabilities

impl Debug for ProviderCapabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ProviderCapabilities

fn default() -> ProviderCapabilities

Returns the “default value” for a type.

impl Eq for ProviderCapabilities

impl PartialEq for ProviderCapabilities

fn eq(&self, other: &ProviderCapabilities) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ProviderCapabilities