@sema-agent/core/dist/core/runner/response-model-seat.js

Stateless, task-oriented AI agent core

import { deliverEngineNotice } from "../engine-notice.js";
import { providerReportedModel } from "../message-utils.js";
export function createResponseModelSeat(onNotice, ids) {
    const announced = new Set();
    return {
        observe(message) {
            const reported = providerReportedModel(message);
            if (reported === undefined)
                return undefined;
            const requested = typeof message.model === "string" ? message.model : "";
            const pair = `${requested}\u0000${reported}`;
            if (!announced.has(pair)) {
                announced.add(pair);
                deliverEngineNotice(onNotice, {
                    code: "route.response_model_mismatch",
                    message: `The provider answered with model "${reported}" for a request sent as "${requested || "(unnamed)"}". ` +
                        `The run is unchanged — the engine keeps asking for the id the catalog names, and the served name is ` +
                        `reported beside it on every turn (turn_end.responseModel) and on the result (TaskResult.responseModel). ` +
                        `This is what an alias, a pool or a gateway-side substitution looks like from here; if the two were ` +
                        `meant to be the same model, the catalog id and the gateway disagree about which one that is.`,
                    detail: { requested, reported, sessionId: ids.sessionId, runId: ids.runId },
                });
            }
            return reported;
        },
    };
}