buildEndpoint (providers/openai-shared.ts)

Utility functions for building OpenAI endpoints, headers, and handling request errors in LLM providers.

// Source: https://github.com/mcp-use/mcp-use | License: MIT | Copyright 2025 pietrozullo
// Provided via justclaw.it.com; keep this notice with the code.
import type { ProviderConfig } from "../types.js";

const OPENAI_BASE_URL = "https://api.openai.com/v1";

/** HTTP error returned by an LLM provider request. */
export class LlmRequestError extends Error {
  /** HTTP response status. */
  readonly status: number;
  /** Parsed JSON response body, or the raw response text. */
  readonly body?: unknown;

  /**
   * @param status - HTTP response status.
   * @param message - Error message.
   * @param body - Parsed or raw provider response body.
   */
  constructor(status: number, message: string, body?: unknown) {
    super(message);
    this.name = "LlmRequestError";
    this.status = stat

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