Claude Code User Usage Tracking

JoaoPigozzo — Wed, 25 Mar 2026 17:31:34 GMT

I am using Databricks Model Serving as a proxy to connect Claude Code. I established the connection through Integrate coding agents (Connect coding agents to Databricks) by generating the environment configuration:

{ "env": { "ANTHROPIC_MODEL": "databricks-claude-opus-4-6", "ANTHROPIC_BASE_URL": "<my_databricks_workspace>", "ANTHROPIC_AUTH_TOKEN": "<your_token_will_appear_here>", "ANTHROPIC_CUSTOM_HEADERS": "x-databricks-use-coding-agent-mode: true", "CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS": "1" } }

When I try to track the cost, it is not associated with a user.

SELECT usage.usage_date, usage.sku_name, usage.usage_metadata.endpoint_name AS model_name, SUM(usage.usage_quantity * list_prices.pricing.effective_list.default) AS total_cost FROM system.billing.usage AS usage JOIN system.billing.list_prices AS list_prices ON usage.sku_name = list_prices.sku_name AND usage.usage_end_time >= list_prices.price_start_time AND (list_prices.price_end_time IS NULL OR usage.usage_end_time < list_prices.price_end_time) WHERE usage.usage_metadata.endpoint_name IS NOT NULL AND usage.sku_name = 'PREMIUM_ANTHROPIC_MODEL_SERVING' GROUP BY usage.usage_date, model_name, usage.sku_name ORDER BY usage.usage_date, total_cost DESC

The result show user as 'null'. How can I check the usage associated with a specific user when using Model Serving as a proxy for Claude Code?

Re: Claude Code User Usage Tracking

Ashwin_DSA — Wed, 25 Mar 2026 22:15:47 GMT

Hi @JoaoPigozzo,

After some investigation, I found that when you use Databricks Model Serving as a proxy for Claude Code, what you see in system.billing.usage is expected. That table is is designed for cost attribution by SKU / endpoint, not per‑user analytics. For foundation models (e.g., PREMIUM_ANTHROPIC_MODEL_SERVING), identity_metadata is often not populated the way you’d expect, so "user = NULL" there is normal.

Unfortunately, there isn’t a single column in system.billing.usage that directly gives "user + $ cost" for Claude Code. The pattern is tokens per user from usage tables + cost per endpoint from billing.

If you want per‑user usage for Claude Code, the supported path is to use AI Gateway coding agents integration

This logs each request to system.ai_gateway.usage with a requester field (user or service principal). You can then do:

SELECT
  requester,
  endpoint_name,
  date_trunc('day', event_time) AS day,
  SUM(input_tokens)  AS in_tokens,
  SUM(output_tokens) AS out_tokens
FROM system.ai_gateway.usage
WHERE endpoint_name = '<your_coding_agent_endpoint>'
GROUP BY ALL
ORDER BY day DESC, in_tokens DESC;

Refer to usage table docs to understand the table strucutre and what is available for querying.

If you’re instead calling a plain Model Serving endpoint, enable AI Gateway usage tracking on that endpoint and use system.serving.endpoint_usage for per‑request tokens + requester. You can still use system.billing.usage to get total endpoint cost. Then apportion that cost per user by their share of tokens from system.serving.endpoint_usage or system.ai_gateway.usage.

Does this give you a direction?

If this answer resolves your question, could you mark it as “Accept as Solution”? That helps other users quickly find the correct fix.

topic Claude Code User Usage Tracking in Generative AI

Claude Code User Usage Tracking

Re: Claude Code User Usage Tracking