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.
npx agentmods add skills/aojdevstudio/finance-guru/fin-corenpx skills add AojdevStudio/Finance-Guru --skill fin-coregit clone --depth 1 https://github.com/AojdevStudio/Finance-GuruWrote 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/aojdevstudio/finance-guru/fin-core)<a href="https://agentmods.dev/skills/aojdevstudio/finance-guru/fin-core"><img src="https://agentmods.dev/badge/skills/aojdevstudio/finance-guru/fin-core.svg" alt="Measured on agentmods" 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 | $0.00035 | $0.01130 |
| Opus 5 | $0.00017 | $0.00565 |
| Sonnet 5 | $0.00007 | $0.00226 |
| Haiku 4.5 | $0.00003 | $0.00113 |
Grade A, and why
fin-core 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 today.
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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today Changed cbdf6d25b46d
- 5d ago First seen · 116 lines · 35 tokens per session scan A 6eafbb091020
fin-core is a skill published in the GitHub repository AojdevStudio/Finance-Guru (318 stars, last pushed yesterday), with no licence file. It adds 35 tokens to every session and 1,130 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 2026-08-30.
Other skills, from other repositories
finance-cleanup
Use when the user wants to clean up transactions, fix categories, find missing recurring charges, or do general transaction hygiene in Copilot Money.
portfolio-rs
Use when operating in a portfoliors finance workspace, reviewing portfolios, generating reports, drafting decisions, or working with INVESTMENTPOLICY.md, positions.json, portfolio/policy.toml, diary, decisions, theses, reports, or watchlist files.
finance-pulse
Use when the user asks how they're doing financially, wants a spending check-in, asks about free money or discretionary budget, or says 'pulse'. Read-only — never writes to Copilot Money.
boundary-audit
Use when running the quarterly boundary audit of this repo's external assumptions — inventory the write/read/docs surfaces against the conformance ledger, track the verification-class trend, retro-check recent bugs for missing class-level ratchets, and spot-check docs freshness. Produces a dated report under…
finance-trip
Use when the user wants to track trip expenses, tag travel transactions, find late-posting charges from a trip, or get a trip spending summary. Example: 'tag my Tahiti trip expenses' or 'how much did I spend in Whistler?'.
finance
Use for open-ended financial questions: 'can I afford X?', 'should I buy X?', 'how much can I spend on Y?', or any affordability, budgeting, or financial planning question. Also use when the user asks a financial question that doesn't fit /finance-cleanup, /finance-pulse, or /finance-trip.