Function logContextMetrics

src/utils/api.ts:479–563

(
  mcpConfigs: Record<string, ScopedMcpServerConfig>,
  toolPermissionContext: ToolPermissionContext,
)

 * Log metrics about context and system prompt size
 */
export async function logContextMetrics(
  mcpConfigs: Record<string, ScopedMcpServerConfig>,
  toolPermissionContext: ToolPermissionContext,
): Promise<void> {
  // Early return if logging is disabled
  if (isAnalyticsDisabled()) {
    return
  }
  const [{ tools: mcpTools }, tools, userContext, systemContext] =
    await Promise.all([
      prefetchAllMcpResources(mcpConfigs),
      getTools(toolPermissionContext),
      getUserContext(),
      getSystemContext(),
    ])
  // Extract individual context sizes and calculate total
  const gitStatusSize = systemContext.gitStatus?.length ?? 0
  const claudeMdSize = userContext.claudeMd?.length ?? 0

  // Calculate total context size
  const totalContextSize = gitStatusSize + claudeMdSize

  // Get file count using ripgrep (rounded to nearest power of 10 for privacy)
  const currentDir = getCwd()
  const ignorePatternsByRoot = getFileReadIgnorePatterns(toolPermissionContext)
  const normalizedIgnorePatterns = normalizePatternsToPath(
    ignorePatternsByRoot,
    currentDir,
  )
  const fileCount = await countFilesRoundedRg(
    currentDir,
    AbortSignal.timeout(1000),
    normalizedIgnorePatterns,
  )

  // Calculate tool metrics
  let mcpToolsCount = 0
  let mcpServersCount = 0
  let mcpToolsTokens = 0
  let nonMcpToolsCount = 0
  let nonMcpToolsTokens = 0

  const nonMcpTools = tools.filter(tool => !tool.isMcp)
  mcpToolsCount = mcpTools.length
  nonMcpToolsCount = nonMcpTools.length

  // Extract unique server names from MCP tool names (format: mcp__servername__toolname)
  const serverNames = new Set<string>()
  for (const tool of mcpTools) {
    const parts = tool.name.split('__')
    if (parts.length >= 3 && parts[1]) {
      serverNames.add(parts[1])
    }
  }
  mcpServersCount = serverNames.size

  // Estimate tool tokens locally for analytics (avoids N API calls per session)
  // Use inputJSONSchema (plain JSON Schema) when available, otherwise convert Zod schema