spend

spend is a skill for Claude Code, Codex from Jakeintech/waybill. It costs 131 tokens per session (1,758 once invoked), scanned A, original, MIT.

A skill for answering questions about Claude Code token use and work costs. It reads local usage records and reports them in tokens or estimated US dollars.

In plain words
What is it for?
Use it to see spending by story, project, model, or time period; check pacing; review unassigned costs; and create a dashboard.
Why use it?
It removes the need to calculate spending manually and keeps unassigned usage visible instead of hiding it.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the waybill plugin — 12 skills, 2 hooks, 2 MCP servers shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/jakeintech/waybill/spend
Any agent
npx skills add Jakeintech/waybill --skill spend
Clone the repo
git clone --depth 1 https://github.com/Jakeintech/waybill

Made for: Claude Code, Codex.

Or install waybill, the plugin that ships this one along with the rest of its 12 skills, 2 hooks, 2 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for spend

README.md
[![agentmods](https://agentmods.dev/badge/skills/jakeintech/waybill/spend.svg)](https://agentmods.dev/skills/jakeintech/waybill/spend)
Your own site
<a href="https://agentmods.dev/skills/jakeintech/waybill/spend"><img src="https://agentmods.dev/badge/skills/jakeintech/waybill/spend.svg" alt="Measured on agentmods" height="20"></a>
Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,758 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00131 $0.01758
Opus 5 $0.00066 $0.00879
Sonnet 5 $0.00026 $0.00352
Haiku 4.5 $0.00013 $0.00176

Measured 3d ago against content hash 43d9319b5e03, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spend scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/spend/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spend

Answer spend questions from local facts, and keep the attribution inbox empty. The engine computes every number; you write the prose around them and never adjust a figure.

"${CLAUDE_PLUGIN_ROOT}/bin/waybill" mine --all      # catch-up metering first, always

Read skills/ledger/references/methodology.md for the language rules (tokens are the native unit; USD appears by default using bundled Anthropic list rates, labeled with its pricing version; unattributed is shown, never hidden).

The canonical questions

Question Command
Where did tokens go (by story/epic/model/week)? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" query spend [--from <date>] [--to <date>]
What did <KEY> cost? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" query story <KEY>
How's my burn / pacing? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" pace
What's my open spend? query spend.data.open_spend
Attribution health? query spend.data.attribution_health
Overall ledger health? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" status
Show me my dashboard "${CLAUDE_PLUGIN_ROOT}/bin/waybill" dashboard — writes rollups/dashboard.html (spend, pacing, open work, last 7 days), opens it in the user's browser, and prints its path (pass --no-open to skip the launch, e.g. on a headless box). The miner keeps the file fresh; reading it costs zero tokens.
What's still in flight / sitting? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" query manifest
What never got tracked? query untracked — then hand off to the salvage skill
Share the ledger as a file? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" export --format csv (respects --audience)
What did caching save me? query spend.data.cache_savings (derived, labeled)
Prove the numbers to a recipient? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" export --pack — see the report skill's verification-pack section
What's in my inbox? "${CLAUDE_PLUGIN_ROOT}/bin/waybill" query inbox

Render compactly, honest-auditor voice. Length follows the detail level — the query envelope echoes it (config.detail_default, overridden per invocation by --detail or the user asking for "the terse/full version"):

Read the full file on GitHub · 123 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 123 lines · 131 tokens per session scan A 43d9319b5e03

Subscribe to this mod's changes

spend is a skill published in the GitHub repository Jakeintech/waybill (1 stars, last pushed 11d ago), licensed MIT. It adds 131 tokens to every session and 1,758 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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