Function loadMcpServersFromFile

src/utils/plugins/mcpPluginIntegration.ts:219–266

* Load MCP servers from a JSON file within a plugin * This is a simplified version that doesn't expand environment variables * and is specifically for plugin MCP configs

(
  pluginPath: string,
  relativePath: string,
)

 * and is specifically for plugin MCP configs
 */
async function loadMcpServersFromFile(
  pluginPath: string,
  relativePath: string,
): Promise<Record<string, McpServerConfig> | null> {
  const fs = getFsImplementation()
  const filePath = join(pluginPath, relativePath)

  let content: string
  try {
    content = await fs.readFile(filePath, { encoding: 'utf-8' })
  } catch (e: unknown) {
    if (isENOENT(e)) {
      return null
    }
    logForDebugging(`Failed to load MCP servers from ${filePath}: ${e}`, {
      level: 'error',
    })
    return null
  }

  try {
    const parsed = jsonParse(content)

    // Check if it's in the .mcp.json format with mcpServers key
    const mcpServers = parsed.mcpServers || parsed

    // Validate each server config
    const validatedServers: Record<string, McpServerConfig> = {}
    for (const [name, config] of Object.entries(mcpServers)) {
      const result = McpServerConfigSchema().safeParse(config)
      if (result.success) {
        validatedServers[name] = result.data
      } else {
        logForDebugging(
          `Invalid MCP server config for ${name} in ${filePath}: ${result.error.message}`,
          { level: 'error' },
        )
      }
    }

    return validatedServers
  } catch (error) {
    logForDebugging(`Failed to load MCP servers from ${filePath}: ${error}`, {
      level: 'error',
    })
    return null
  }
}

/**
 * A channel entry from a plugin's manifest whose userConfig has not yet been