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 skills add NachoLafuente/5050-gtm --skill cfo-skillgit clone --depth 1 https://github.com/NachoLafuente/5050-gtmWrote 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/nacholafuente/5050-gtm/cfo-skill)<a href="https://agentmods.dev/skills/nacholafuente/5050-gtm/cfo-skill"><img src="https://agentmods.dev/badge/skills/nacholafuente/5050-gtm/cfo-skill/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/nacholafuente/5050-gtm/cfo-skill"><img src="https://agentmods.dev/badge/skills/nacholafuente/5050-gtm/cfo-skill.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 | $0.00170 | $0.02044 |
| Opus 5 | $0.00085 | $0.01022 |
| Sonnet 5 | $0.00034 | $0.00409 |
| Haiku 4.5 | $0.00017 | $0.00204 |
Grade A, and why
cfo-skill 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 11d 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CFO Skill
⚠️ DISCLAIMER
This skill displays data. It is NOT financial, legal, tax, accounting, or investment advice.
Numbers may be stale, miscategorized, or reflect bugs in upstream systems. Frameworks below (LTV:CAC, runway, burn multiple, Rule of 40) are heuristics, not guarantees. Decisions about hiring, fundraising, distributions, taxes, or solvency must be made by you in consultation with a qualified CFO, accountant, lawyer, or tax advisor. The author and contributors accept no liability for decisions made based on this skill's output.
Two ways to use it
Mode 1: CSV templates (works with any stack)
Drop four CSVs into a folder, run one command, get an Excel workbook. Works with any CRM/bank/billing stack, Attio, HubSpot, Salesforce, Pipedrive, Mercury, Brex, Stripe, Chargebee, Ramp, Pleo, whatever.
Templates live in templates/. Realistic example data lives in examples/ so you can try the pipeline before plugging in real data.
python skills/cfo-skill/run.py --source csv --csv-dir ./my-data --output cfo.xlsx
CSV schemas (column headers in templates/):
| File | Columns |
|---|---|
customers.csv |
customer_id, customer_name, status, signed_up_at, churned_at, mrr, plan |
cash_movements.csv |
date, account, direction, amount, currency, counterparty, category, department, note |
invoices.csv |
invoice_id, customer, issued_at, due_at, amount, currency, status |
balances.csv |
account, currency, balance, as_of |
status values: active, churned, lead (only active counts toward MRR). direction values: in, out. Invoice status values: paid, unpaid, draft.
Mode 2: Live API pull (Attio + Qonto + Stripe + Moss)
Set credentials in your environment, run the puller, get the same Excel workbook from live data.
python skills/cfo-skill/run.py --source api --providers all --output cfo.xlsx
Or pick specific providers, they run in the order you list, and later writers win on customers.csv / invoices.csv:
What ships with it
22 files 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.
- cfo.py 9.8 KB runs code
- examples/balances.csv 129 B
- examples/cash_movements.csv 5.4 KB
- examples/customers.csv 1.6 KB
- examples/invoices.csv 1.0 KB
- pullers/__init__.py 0 B runs code
- pullers/attio.py 3.5 KB runs code
- pullers/moss.py 3.4 KB runs code
- pullers/qonto.py 4.9 KB runs code
- pullers/stripe_source.py 6.4 KB runs code
- references/attio.md 4.6 KB
- references/case-studies.md 3.7 KB
- references/metrics-benchmarks.md 4.6 KB
- references/moss.md 4.6 KB
- references/qonto.md 4.3 KB
- references/stripe.md 3.1 KB
- run.py 5.0 KB runs code
- templates/balances.csv 127 B
- templates/cash_movements.csv 223 B
- templates/customers.csv 182 B
- templates/invoices.csv 188 B
- xlsx_writer.py 11 KB runs code
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.
- 11d ago First seen · 146 lines · 0 tokens per session scan A 1f978d730b88
cfo-skill is a skill published in the GitHub repository NachoLafuente/5050-gtm (3 stars, last pushed 2mo ago), licensed MIT. It adds 170 tokens to every session and 2,044 once invoked, about $0.0009 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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