Quick answer
ccflare and better-ccflare sit between Claude Code and Anthropic as a proxy and log each request. That puts a server in your request path. UsageAtlas reads local logs and the usage your sign-in reports, so Claude Code connects the way it always did.
What a proxy gives you
A proxy sees every request, so it can log latency, errors, and tokens per call. Its headline feature is spreading requests across several Claude accounts. The cost is setup work, a changed base URL, and a process that has to stay up or Claude Code stops.
Tracking without a proxy
Claude Code already writes token counts to local session files, and your account already reports its five-hour and weekly limits. UsageAtlas reads both. Nothing sits in the request path, so nothing can break your session.
Which one to use
Use a proxy if you need a log of every request. For your own limits, tokens, and cost, a local tracker does the job with less to run.
Questions, answered
Does UsageAtlas slow down Claude Code?
No. It is not in the request path. It reads files and asks for usage numbers on its own schedule.
Can UsageAtlas balance load across Claude accounts?
No. It only tracks usage.
Is pooling accounts through ccflare allowed?
Running a proxy for your own traffic is a technical choice. Pooling several subscription accounts is the part to check against Anthropic's terms for your plan.