9router/open-sse/translator/helpers/maxTokensHelper.js

import { DEFAULT_MAX_TOKENS, DEFAULT_MIN_TOKENS } from "../../config/constants.js";

/**
 * Adjust max_tokens based on request context
 * @param {object} body - Request body
 * @returns {number} Adjusted max_tokens
 */
export function adjustMaxTokens(body) {
  let maxTokens = body.max_tokens || DEFAULT_MAX_TOKENS;
  
  // Auto-increase for tool calling to prevent truncated arguments
  // Tool calls with large content (like writing files) need more tokens
  if (body.tools && Array.isArray(body.tools) && body.tools.length > 0) {
    if (maxTokens < DEFAULT_MIN_TOKENS) {
      console.log(`[AUTO-ADJUST] max_tokens: ${maxTokens} → ${DEFAULT_MIN_TOKENS} (tool calling detected)`);
      maxTokens = DEFAULT_MIN_TOKENS;
    }
  }
  
  return maxTokens;
}