openai/codex · error · Error

Child process has no stdin

Error message

Child process has no stdin

What it means

Error "Child process has no stdin" thrown in openai/codex.

Source

Thrown at sdk/typescript/src/exec.ts:206

    }
    if (args.apiKey) {
      env.CODEX_API_KEY = args.apiKey;
    }
    if (this.pathDirs.length > 0) {
      prependPathDirs(env, this.pathDirs);
    }

    const child = spawn(this.executablePath, commandArgs, {
      env,
      signal: args.signal,
    });

    let spawnError: unknown | null = null;
    child.once("error", (err) => (spawnError = err));

    if (!child.stdin) {
      child.kill();
      throw new Error("Child process has no stdin");
    }
    child.stdin.write(args.input);
    child.stdin.end();

    if (!child.stdout) {
      child.kill();
      throw new Error("Child process has no stdout");
    }
    const stderrChunks: Buffer[] = [];

    if (child.stderr) {
      child.stderr.on("data", (data) => {
        stderrChunks.push(data);
      });
    }

    const exitPromise = new Promise<{ code: number | null; signal: NodeJS.Signals | null }>(
      (resolve) => {

View on GitHub (pinned to 339751715c)

Solutions

1. Spawn the child process with piped stdin so input can be written to it.

When it happens

Trigger: Thrown at sdk/typescript/src/exec.ts:206 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/7146391c01a7c7e2. Report an issue: GitHub.