Function checkEndpoint

bin/config.js:276–372

* Check if the model endpoint is reachable. * Returns true if connected, false otherwise.

(config)

 * Returns true if connected, false otherwise.
 */
async function checkEndpoint(config) {
  const baseUrl = config.model.baseUrl || process.env.OLLAMA_HOST || 'http://localhost:11434';

  // Plugin-registered providers handle their own connectivity
  const { providerRegistry } = require('../src/compiled/providers/registry');
  if (providerRegistry.has(config.model.provider)) {
    console.log(`  Using plugin provider: ${config.model.provider}`);
    return true;
  }

  // OpenAI-compatible endpoint (LM Studio, vLLM, OpenRouter, etc.)
  if (config.model.provider === 'openai' || baseUrl.includes('/v1')) {
    try {
      const headers = buildAuthHeaders(config);
      const response = await fetch(`${baseUrl}/models`, { headers });
      if (!response.ok) {
        console.log(`  ⚠ Cannot reach endpoint at ${baseUrl}`);
        console.log(`  Got HTTP ${response.status} from ${baseUrl}/models`);
        if (response.status === 404 && !/\/v1(\/|$)/.test(baseUrl)) {
          // The most common cause: user gave a base URL without /v1.
          console.log(`  Tip: this URL has no /v1 path. Try SMALLCODE_BASE_URL=${baseUrl}/v1 in your .env.`);
        } else {
          console.log(`  Check that your model server is running and accessible.`);
        }
        if (response.status === 401 || response.status === 403) {
          console.log(`  Got ${response.status} — set OPENAI_API_KEY in .env if your server requires auth.`);
        }
        return false;
      }
      const data = await response.json();
      const models = data.data || [];
      if (models.length > 0) {
        console.log(`  Connected: ${baseUrl}`);
        console.log(`  Model: ${config.model.name}`);
        const activeModel = models.find(m => (m.id || m.name || '').includes(config.model.name)) || models[0];
        if (activeModel && activeModel.context_length) {
          config.context.detected_window = activeModel.context_length;
          console.log(`  Context: ${activeModel.context_length} tokens`);
        }
      }
      return true;
    } catch (e) {
      console.log(`  ⚠ Cannot reach endpoint at ${baseUrl}`);
      console.log(`  Check that your model server is running and the URL is correct.`);
      return false;
    }
  }

  // Ollama endpoint.
  // Prefer the user-supplied base URL (SMALLCODE_BASE_URL) over OLLAMA_HOST /
  // localhost so a remote Ollama server is actually probed. Previously this
  // branch always hit localhost and reported "Ollama not running" even when
  // the user pointed SMALLCODE_BASE_URL at a remote host (issue #59).
  // Ollama's native API lives at the host root (/api/tags), so strip any
  // trailing OpenAI-style /v1 and normalise the trailing slash.
  let host = config.model.baseUrl || process.env.OLLAMA_HOST || 'http://localhost:11434';
  host = host.replace(/\/v1\/?$/, '').replace(/\/+$/, '');
  const tagsUrl = `${host}/api/tags`;