Financial Calculations

Financial Calculations is a skill for Claude Code, Codex from Ruinius/financial-analyst-skills. It costs 35 tokens per session (143 once invoked), scanned A, original, MIT.

A deterministic Python calculation step that derives financial measures such as EBITA, invested capital, tax rates, and a summary table from extracted financial data.

In plain words
What is it for?
Use it after financial data extraction to calculate the metrics needed for later summaries and valuation work.
Why use it?
It keeps related calculations in one repeatable dependency chain and avoids manually recomputing derived figures.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it after financial data extraction to calculate the metrics needed for later summaries and valuation work.

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Install with agentmods
npx agentmods add skills/ruinius/financial-analyst-skills/financial_calculations
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.

Any agent
npx skills add Ruinius/financial-analyst-skills --skill financial_calculations
Clone the repo
git clone --depth 1 https://github.com/Ruinius/financial-analyst-skills

Made for: Claude Code, Codex.

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 Financial Calculations

README.md
[![agentmods](https://agentmods.dev/badge/skills/ruinius/financial-analyst-skills/financial_calculations/github.svg)](https://agentmods.dev/skills/ruinius/financial-analyst-skills/financial_calculations)
Your own site
<a href="https://agentmods.dev/skills/ruinius/financial-analyst-skills/financial_calculations"><img src="https://agentmods.dev/badge/skills/ruinius/financial-analyst-skills/financial_calculations/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.

agentmods 80×15 button for Financial Calculations

Your own site · 80×15
<a href="https://agentmods.dev/skills/ruinius/financial-analyst-skills/financial_calculations"><img src="https://agentmods.dev/badge/skills/ruinius/financial-analyst-skills/financial_calculations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 143 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00035 $0.00143
Opus 5 $0.00017 $0.00072
Sonnet 5 $0.00007 $0.00029
Haiku 4.5 $0.00003 $0.00014

Measured 12d ago against content hash 3daebe751fc8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Financial Calculations 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/calculate.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/financial_calculations/SKILL.md · 17 lines

What it actually says

Financial Calculations (Phase 3)

All calculation logic is consolidated into a single script that enforces the correct dependency chain internally.

  1. Execute the script: python skills/financial_calculations/scripts/calculate.py {markdown_file}
  2. Verify no errors were thrown.

Changelog

  • 2026-05-07: Updated calculate.py to correctly identify interest_expense_net and use absolute values for interest expense in the summary table, fixing WACC calculation issues.
Files

What ships with it

2 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.

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. 12d ago First seen · 17 lines · 35 tokens per session scan A 3daebe751fc8

Subscribe to this mod's changes

Financial Calculations is a skill published in the GitHub repository Ruinius/financial-analyst-skills (5 stars, last pushed 3mo ago), licensed MIT. It adds 35 tokens to every session and 143 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.