Show HN: CodeBurn – Analyze Claude Code token usage by task

aagentseal 3 days ago 11 commentsRead Article on github.com

Built this after realizing I was spending ~$1400/week on Claude Code with almost no visibility into what was actually consuming tokens.

Tools like ccusage give a cost breakdown per model and per day, but I wanted to understand usage at the task level.

CodeBurn reads the JSONL session transcripts that Claude Code stores locally (~/.claude/projects/) and classifies each turn into 13 categories based on tool usage patterns (no LLM calls involved).

One surprising result: about 56% of my spend was on conversation turns with no tool usage. Actual coding (edits/writes) was only ~21%.

The interface is an interactive terminal UI built with Ink (React for terminals), with gradient bar charts, responsive panels, and keyboard navigation. There’s also a SwiftBar menu bar integration for macOS.

Happy to hear feedback or ideas.

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Discussion (11 Comments)Read Original on HackerNews

coatol5•about 1 hour ago

Made something similar a while back: https://www.clauderank.com/ Completely open source

Isolated_Routes•39 minutes ago

I like this a lot An interesting next iteration would be to add a functionality that evaluates a user's work for inefficiencies and suggests where they can improve cut cost. Might be outside the scope of your project, but it could be interesting.

agentseal•34 minutes ago

already on that probably in an hour it will be published. will let you know once it does.

giancarlostoro•about 2 hours ago

> The interface is an interactive terminal UI built with Ink (React for terminals)

Just like Claude Code btw.

I'm working on a custom harness because I don't like or trust some of the ones out there, so I'm going to build one purely for myself and my own needs to see just how they work, and figure out some of what you've learned by looking at how Claude works, so I might add your project to my list of tooling to look at.

agentseal•about 2 hours ago

yeah Ink, it was the fastest path to something that felt native next to Claude Code itself

hmokiguess•about 2 hours ago

Very cool! I saw a similar product recently that I liked but I much prefer your approach to theirs[1]

[1] https://github.com/cordwainersmith/Claudoscope

ieie3366•about 1 hour ago

"Built this after realizing I was spending ~$1400/week on Claude Code with almost no visibility into what was actually consuming tokens."

holy slop. the $200/month plan has NEVER hit rate limits for me and I often run 5+ tabs of concurrent agents in a large 300k LoC codebase

agentseal•35 minutes ago

not $1,400 out of pocket, thats the API equivalent cost of the tokens. I am on the $200/month Max plan :D.

In my case I mostly consume every bit of the weekly subscription.

halostatue•about 2 hours ago

Doesn't seem to work with Cursor Agent (which may store its data in ~/.cursor).

agentseal•about 1 hour ago

you are right. thats cursor-agent (the CLI), not the Cursor IDE. CodeBurn only parses the IDE's state.vscdb right now. cursor agent keeps transcripts under ~/.cursor/projects/*/agent-transcripts/ which we dont read yet.

filed an issue to add it: https://github.com/AgentSeal/codeburn/issues/55

cursor support only landed yesterday, so CLI is next. thanks for catching it.

halostatue•about 1 hour ago

Cursor Agent itself suggests that this probably won't be easy as some of the data is missing.