Codex hosted image_generation returns one image per call; re

Error message

Codex hosted image_generation returns one image per call; requested n=${requestedCount} will fan out in parallel

What it means

Error "Codex hosted image_generation returns one image per call; requested n=${requestedCount} will fan out in parallel" thrown in diegosouzapw/OmniRoute.

Source

Thrown at open-sse/handlers/imageGeneration.ts:2571

  logPath = "/v1/images/generations",
}) {
  const startTime = Date.now();
  const prompt = typeof body.prompt === "string" ? body.prompt : "";
  if (!prompt.trim()) {
    return saveImageErrorResult({
      provider,
      model,
      status: 400,
      startTime,
      error: "Prompt is required for Codex image generation",
      path: logPath,
    });
  }

  const requestedCount =
    Number.isInteger(body.n) && (body.n as number) > 0 ? (body.n as number) : 1;
  if (log && requestedCount > 1) {
    log.warn(
      "IMAGE",
      `Codex hosted image_generation returns one image per call; requested n=${requestedCount} will fan out in parallel`
    );
  }

  const token = credentials?.accessToken || credentials?.apiKey;
  if (!token) {
    return saveImageErrorResult({
      provider,
      model,
      status: 401,
      startTime,
      error: "Codex credentials missing accessToken — reconnect the Codex provider",
      path: logPath,
    });
  }

  const workspaceId =

View on GitHub (pinned to a179ffed5b)

When it happens

Trigger: Thrown at open-sse/handlers/imageGeneration.ts:2571 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of diegosouzapw/OmniRoute@a179ffed5b (2026-08-25). Data as JSON: /api/errors/0f8cf6b826da4e3f. Report an issue: GitHub.