@accordkit/tracer - v0.2.1
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    Interface ModelUsageEvent

    Model token usage accounting (provider-reported or estimated).

    interface ModelUsageEvent {
        ts: string;
        sessionId: string;
        level: TraceLevel;
        ctx: TraceContext;
        provider?: Provider;
        model?: string;
        requestId?: string;
        service?: string;
        env?: string;
        region?: string;
        $ext?: Record<string, unknown>;
        type: "usage";
        inputTokens?: number;
        outputTokens?: number;
        cost?: number;
    }

    Hierarchy (View Summary)

    Index

    Properties

    ts sessionId level ctx provider? model? requestId? service? env? region? $ext? type inputTokens? outputTokens? cost?

    Properties

    ts: string

    ISO8601 timestamp of when the event occurred.

    sessionId: string

    Logical identifier for a user session or conversation.

    level: TraceLevel

    Severity level of the event.

    ctx: TraceContext

    Trace context for correlating events.

    provider?: Provider

    The AI provider SDK that emitted the event.

    model?: string

    The specific model ID used, if known (e.g., 'gpt-4-turbo').

    requestId?: string

    The unique request ID returned by the provider's API.

    service?: string

    The name of the service emitting the event.

    env?: string

    The deployment environment (e.g., 'production', 'staging').

    region?: string

    The cloud or geographical region.

    $ext?: Record<string, unknown>

    A bucket for vendor-specific or non-standard extensions.

    type: "usage"

    The discriminated union type name for the event.

    inputTokens?: number

    Number of tokens in the input/prompt.

    outputTokens?: number

    Number of tokens in the output/completion.

    cost?: number

    Estimated or reported cost for the tokens used.

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