toktop

btop for your AI coding agents. Watch the money tick. Locally. No signup.

_{(toktop = token + top — same genre as htop / btop)}

A single runaway agent loop can quietly burn hundreds of dollars while you're at lunch. toktop shows you exactly what Claude Code is costing you — live, per session, project and model — with a daily budget bar that turns red before your bill does. One static binary. No signup. No network.

_{Recorded with toktop --demo (a low $2 cap so the bar goes red on camera). Run it yourself to watch your real spend.}

 toktop  btop for AI coding agents                              ● live  17:39:33  DEMO
 ────────────────────────────────────────────────────────────────────────────────────
 TODAY $5.47   burn ▂▄▆▂▂▆▂▅▁▄▁▂▆█▁▂          WEEK $5.47        ALL-TIME $5.47
 DAILY BUDGET  ████████████████████████████████████████████████  $5.47 / $5.00   109%
  ⚠  DAILY BUDGET EXCEEDED  ·  $0.47 over $5.00
 ────────────────────────────────────────────────────────────────────────────────────
 SESSIONS (by recent)                              BY MODEL
 ▸ api-gateway      $4.18  ▄▄▆▆▅▄▆█  opus    now    claude-opus-4-8     $4.18   76%
   web-frontend     $0.95  ▇▆█▅▅▄▇█  sonnet  now    claude-sonnet-4-6   $1.20   22%
   data-pipeline    $0.34  ▁▂▁▂▃▁▂▄  haiku   2s     claude-haiku-4-5    $0.34    6%
                                                     BY PROJECT
                                                     api-gateway         $4.18
                                                     web-frontend        $0.95
                                                     data-pipeline       $0.34
 ────────────────────────────────────────────────────────────────────────────────────
 j/k move  s sort  +/- budget  q quit             3 sessions · 2.0M tokens · 75 responses

_{The hero shows toktop --demo with a $5 cap so you can see the red over-budget state — the real default is $20/day (override with --budget or $TOKTOP_BUDGET).}

Why

• Runaway agent bills are real. Coding agents loop, retry, and re-read huge contexts. People wake up to surprise invoices — a single bad loop can burn through hundreds of dollars while you're at lunch.
• Every other cost tool is a cloud dashboard you have to sign into. Langfuse, Helicone, provider consoles — all require an account, a proxy, or shipping your traffic somewhere. You just want to glance at what's happening on your own machine.
• Your token logs should never leave your laptop. toktop reads the session logs that are already on disk, read-only, and never makes a single network call.

Install

One line (macOS / Linux):

curl -fsSL https://raw.githubusercontent.com/furkanalp41/toktop/main/install.sh | sh

Prefer to read it first (recommended)?

curl -fsSL https://raw.githubusercontent.com/furkanalp41/toktop/main/install.sh -o install.sh
less install.sh && sh install.sh   # checksums are published on every release

Homebrew (once the tap is published):

brew install furkanalp41/tap/toktop

Go (1.22+):

go install github.com/furkanalp41/toktop@latest

Windows: download toktop_<version>_windows_amd64.zip from Releases and put toktop.exe on your PATH.

It's a single static binary — no runtime, no dependencies.

Use

toktop                  # auto-discovers your sessions; default budget $20/day
toktop --demo           # stream synthetic data — see it light up instantly
toktop --budget 25      # set a $25/day budget (turns the bar red when crossed)
toktop --once           # print a one-shot summary and exit (great for scripts / CI)
toktop --once --by-cost # one-shot, sorted by biggest spenders

Features

Supported agents

Experimental parsers are conservative: if a log doesn't carry explicit token usage, that agent simply shows nothing rather than a wrong number. (That guarantee is about token counts — an experimental agent's cost is computed with an estimated Claude-shaped fallback rate, shown with a ~est marker, until a model-specific price is added.) PRs to harden them are very welcome — see CONTRIBUTING.

How it works

toktop discovers your local agent session logs, tails them with a file-watcher, and turns the token counts they already record into dollars using a built-in, editable pricing table. That's it. There is no server, no database, no auth, and no network access — the only state involved is the files already on your disk.

Configuration

Daily budget — --budget 25, or set TOKTOP_BUDGET=25.

Prices drift, so they're data, not code. Drop a file at ~/.config/toktop/pricing.toml (or point TOKTOP_PRICING at one) to override any model's price without waiting for a release:

# USD per 1,000,000 tokens. cache_read/cache_write_* default to
# input * 0.10 / 1.25 / 2.00 when omitted.
[[model]]
match  = ["opus"]
input  = 15.0
output = 75.0

The longest matching match substring wins, and unknown models fall back to an estimate that's clearly flagged in the UI (look for the ~est marker).

Pointing at non-default locations — TOKTOP_CLAUDE_DIR, TOKTOP_CODEX_DIR, TOKTOP_GEMINI_DIR.

Roadmap

• Opt-in hard budget enforcement — a kill-switch that can actually stop an agent before it blows your cap (v0.2).
• Hardened Codex & Gemini CLI parsers from real-world logs.
• Per-day history view and CSV/JSON export.
• toktop --watch-cost N to exit non-zero in CI when a run exceeds a threshold.

Privacy

toktop is 100% local. It opens your session logs read-only, computes cost from a table compiled into the binary, and never opens a socket. No telemetry. No accounts. Read the code — it's small on purpose.

Verify it yourself — this isn't just a promise:

go test -run TestNoNetworkImports ./...   # fails if any code imports net / net/http / crypto/tls / os/exec
strace -f -e trace=network toktop --once  # Linux: watch it open zero connections

Contributing

Issues and PRs welcome — especially log-format samples for Codex/Gemini and pricing updates. See CONTRIBUTING.md. Be kind; ship a GIF.

Star history

License

MIT — do whatever you want, just don't sue us.