Her · हेर - Claude Code 会话分析工具

Her · हेर — _Marathi for “detective.”_ A detective for your Claude Code sessions.

Try it here: Her on Hugging Face

Every Claude Code session leaves a trace — a .jsonl file with every turn, tool call, and token. But in practice, that trace is write-only. Rarely anyone reads 4,000 lines of JSON to figure out _why the agent reached for production_, where the context budget actually went, or which subagent quietly burned half the run.

Her reads it for you.

The premise is simple: drop a session file onto the page and let her investigate. She reconstructs what happened in plain English, flags the risky moves — deploys, config and production changes, secrets — and traces each one back to the exact turn where it happened.

She shows where the tokens went, which tools, subagents, skills, and MCP servers were used, and — only when a named, fixable pattern fires — what you could have done better, grounded in Anthropic’s and the community’s best practices. She _suggests, never asserts_, and stays silent when there’s nothing worth saying.

There’s also a built-in copilot: Ask Her. Ask _“why was this tool used?”_ and she answers from the trace, cites the turns, and opens the exact tool call. Drop one file for a session view; drop several to build a project view and hunt a question across many sessions at once.

No third-party AI API is ever called. The model — Nemotron-Mini-4B-Instruct — runs on the Space’s own GPU via ZeroGPU. Your session is uploaded only to a private, auto-deleted namespace that belongs to your run, and nothing about it leaves the box.

The split that makes this trustworthy: the evaluation engine is purely deterministic. The model is used _only_ to write the English and propose softer suggestions. It never asserts a finding. The numbers don’t move when the model changes.

One nice detail: Her doesn’t just list the CLI tools a session used — she identifies them. A database of top tools from Homebrew, npm, and PyPI ships with the Space, so most tools are named offline with a one-line blurb. When deploy tools, database clients, or dev servers are actually executed, Her flags that activity for the second look it deserves.

It grew over a weekend. It started as an operator’s view — a journey graph where every query is a node sized by cost, the heaviest one glowing — built for a friend.

I showed it to another friend who wanted it simpler, so the graph grew an executive Report that’s now the default. Then the first friend asked why _their_ CLI tool didn’t show up — which is how the tool database was born.

The frontend is a React app served straight off a Gradio server, with the deterministic engine doing the forensics and Nemotron handling the prose.

When Claude loses his mind, call Her. ;)

Try it here: Her on Hugging Face