Function run

src/agents/codex.ts:71–113

(model, prompt, options)

const codexAgent: Agent.Definition<(typeof models)[number]> = {
  async run(model, prompt, options) {
    options.logger.log(
      `codex-sdk --model ${model} --sandbox ${DEFAULT_SANDBOX} ${prompt}`,
    );

    const key = sessionKey(model, options.cwd);
    const thread = getOrCreateThread(model, options.cwd);

    const actions: string[] = [];
    let usage: Usage;
    let cost = 0;
    try {
      const pricingKey = model;
      const pricing = openai.models[pricingKey]?.cost;
      const turn = await thread.run(prompt);
      assert(turn.usage, "The agent did not emit the usage information.");
      usage = turn.usage;
      const billableInput =
        (usage.input_tokens ?? 0) - (usage.cached_input_tokens ?? 0);
      const cachedInput = usage.cached_input_tokens ?? 0;
      const output = usage.output_tokens ?? 0;
      cost =
        (billableInput * pricing.input +
          output * pricing.output +
          cachedInput * pricing.cache_read) /
        1_000_000;

      actions.push(...turn.items.map((item) => JSON.stringify(item)));
      logTurnItems(turn.items, options);
    } catch (error) {
      threadCache.delete(key);
      throw error;
    }

    return {
      actions,
      usage: {
        input: usage.input_tokens,
        output: usage.output_tokens,
        cost,
      },
    };
  },
};

export default codexAgent;