Struct BackendCapabilities 

pub struct BackendCapabilities {
    pub v2: bool,
    pub vision: bool,
    pub audio: bool,
    pub video: bool,
    pub tools: bool,
    pub thinking: bool,
    pub embed: bool,
    pub accelerator: AcceleratorInfo,
}

Per-backend capability advertisement. The daemon consults this on boot to decide whether v2 multimodal / tool-use requests can be dispatched, and reports the advertised set on the admin status surface so middleware authors can introspect what the running daemon can do without trial-and-error.

Per the v0.2 plan: until cloud adapters land, the only adapters shipped are mock and llamacpp. Both opt-in selectively — mock for tests, llamacpp once Phase 3+ wires mtmd / tool parsing.

Fields

v2: bool

true if the backend implements generate_v2 (typed content blocks, tool definitions). When false the daemon’s v2 dispatch falls back to Error{Internal, "v2 not supported by this backend"}.

vision: bool

true if the backend can ingest image attachments. Reported to consumers; requests with image content blocks against a non-image backend get Error{AttachmentUnsupported,...}.

audio: bool

true if the backend can ingest audio attachments.

video: bool

true if the backend can ingest video attachments. (Reserved.)

tools: bool

true if the backend natively supports tool-use round-tripping (parses <|tool_call> from token stream, accepts tool_result blocks in the next request, etc.).

thinking: bool

true if the backend separates <|think|> reasoning trace from user-visible output.

embed: bool

true if the backend implements embed (per ADR 0017). When false the daemon does not bind the embed socket; if it somehow gets bound and a request arrives, dispatch returns Error{EmbedUnsupported}.

accelerator: AcceleratorInfo

Hardware-acceleration snapshot. Cpu / 0 for the default trait impl; mock keeps the default; llamacpp reports the compile-time GGML backend + the configured n_gpu_layers. Reported on admin status: capabilities frames and in inferdctl doctor (#77).

Trait Implementations

impl Clone for BackendCapabilities

fn clone(&self) -> BackendCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackendCapabilities

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

Formats the value using the given formatter.

impl Default for BackendCapabilities

fn default() -> BackendCapabilities

Returns the “default value” for a type.

impl PartialEq for BackendCapabilities

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BackendCapabilities

impl Eq for BackendCapabilities

impl StructuralPartialEq for BackendCapabilities