Borrowing it
Nothing to install: this file belongs to natejswenson/local-budget. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/natejswenson/local-budget/main/.claude/skills/budget-monthly-brief/SKILL.mdgit clone --depth 1 https://github.com/natejswenson/local-budgetWrote 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.
[](https://agentmods.dev/skills/natejswenson/local-budget/budget-monthly-brief)<a href="https://agentmods.dev/skills/natejswenson/local-budget/budget-monthly-brief"><img src="https://agentmods.dev/badge/skills/natejswenson/local-budget/budget-monthly-brief/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/natejswenson/local-budget/budget-monthly-brief"><img src="https://agentmods.dev/badge/skills/natejswenson/local-budget/budget-monthly-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00042 | $0.00781 |
| Opus 5 | $0.00021 | $0.00391 |
| Sonnet 5 | $0.00008 | $0.00156 |
| Haiku 4.5 | $0.00004 | $0.00078 |
Grade A, and why
budget-monthly-brief 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Budget Monthly Brief
Compose the period brief. Follow the budget-analyst discipline: never invent a
number, print each tool's rendered block verbatim, then add at most three
sentences of synthesis per section.
Compose the brief (read tools, in order)
get_month_summary— the headline: spent, income, net, AND the numbered "Where it goes" category table (this is the brief's category section — do NOT also callget_category_breakdownhere: two numbered lists of the same rows in one turn make every row reference ambiguous by construction; keepget_category_breakdownfor later drill-downs only).monthly_trend— the spend trend across recent months.insights— concrete ways to save.find_anomalies— unusual charges worth flagging (pass the brief's month so the rendered block is scoped, not two years of history).recurring_charges— subscriptions and recurring flags.
Print each tool's rendered block verbatim. The brief reads: spent / income / net
→ where it goes → ways to save → flags.
Save the brief (write — confirm first)
After composing, offer to save the brief with save_brief. Confirm before
writing: show the user the exact brief text you would save and get an explicit
"yes" before calling save_brief. If the user declines, leave it unsaved.
Visual report (on demand)
After the save-brief question resolves (yes or no), offer one more thing: "Want this as a visual report too?"
If yes: confirm, then call render_report(period, narrative) — the
deterministic renderer builds the whole page (stat row → spend-vs-budget chart
→ trend → flags) server-side and writes
reports/budget-report-<period>.pdf (gitignored, 0600). The optional
narrative is 1-3 plain-text sentences grounded ONLY in figures from
rendered blocks already printed this conversation — it's the one free-text
slot on the page; never restate numbers from memory into it. Print the tool's
rendered confirmation verbatim: the path is the user's to open, move, or
delete. Regenerating the same period overwrites that period's PDF; different
periods never collide.
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.
- 12d ago First seen · 63 lines · 42 tokens per session scan A ece48c39394d
budget-monthly-brief is a skill published in the GitHub repository natejswenson/local-budget (0 stars, last pushed 2d ago), licensed MIT. It adds 42 tokens to every session and 781 once invoked, about $0.0002 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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