Method recordSuccessForApiKey

proxy/handler.go:1348–1356

recordSuccessForApiKey is recordSuccess + per-API-key usage attribution. When apiKeyID is empty (legacy single-key path or unauthenticated path), only the global counters are updated. Persistence errors are logged but do not propagate.

(apiKeyID string, inputTokens, outputTokens int, credits float64)

			thinkingOutput = ""
		}
		outputTokens = estimateClaudeOutputTokens(outputContent, thinkingOutput, toolUses)

		h.recordSuccessForApiKey(apiKeyID, inputTokens, outputTokens, credits)
		h.pool.RecordSuccess(account.ID)
		h.pool.UpdateStats(account.ID, inputTokens+outputTokens, credits)
		h.promptCache.Update(account.ID, cacheProfile)
		h.recordSuccessLog("claude", model, account.ID, inputTokens+outputTokens, credits, time.Since(reqStart).Milliseconds())

		stopReason := mapClaudeStopReason(upstreamStopReason, len(toolUses))

		ensureMessageStart()
		h.sendSSE(w, flusher, "message_delta", map[string]interface{}{