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stock-options-calculator

stock-options-calculator is a skill for Claude Code from trycomp-io/comp-skills. It costs 150 tokens per session (1,806 once invoked), scanned A, original, MIT.

A calculator for stock options in private companies, including vesting, dilution, present value, and possible exit scenarios. Stock options are rights to buy company shares, while vesting is the process by which those rights become available.

In plain words
What is it for?
Use it to model a cliff and scheduled vesting, estimate dilution across funding rounds, calculate hypothetical value, and prepare discussion points for candidates or employees.
Why use it?
It makes the uncertain future value of an option grant easier to compare and explain.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the comp-skills plugin — 37 skills shipped together

not rated 2repo 3mo ago A scan 150 tokens original MIT

Good fit Use it to model a cliff and scheduled vesting, estimate dilution across funding rounds, calculate hypothetical value, and prepare discussion points for candidates or employees.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/trycomp-io/comp-skills/stock-options-calculator
View source ↗ trycomp-io/comp-skills
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 trycomp-io/comp-skills --skill stock-options-calculator
Clone the repo
git clone --depth 1 https://github.com/trycomp-io/comp-skills

Made for: Claude Code.

Or install comp-skills, the plugin that ships this one along with the rest of its 37 skills.

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 stock-options-calculator

README.md
[![agentmods](https://agentmods.dev/badge/skills/trycomp-io/comp-skills/stock-options-calculator/github.svg)](https://agentmods.dev/skills/trycomp-io/comp-skills/stock-options-calculator)
Your own site
<a href="https://agentmods.dev/skills/trycomp-io/comp-skills/stock-options-calculator"><img src="https://agentmods.dev/badge/skills/trycomp-io/comp-skills/stock-options-calculator/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 stock-options-calculator

Your own site · 80×15
<a href="https://agentmods.dev/skills/trycomp-io/comp-skills/stock-options-calculator"><img src="https://agentmods.dev/badge/skills/trycomp-io/comp-skills/stock-options-calculator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 150 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,806 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 $0.00150 $0.01806
Opus 5 $0.00075 $0.00903
Sonnet 5 $0.00030 $0.00361
Haiku 4.5 $0.00015 $0.00181

Measured 9d ago against content hash 194f99f71d5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

stock-options-calculator 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 9d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (eam_client.py, scripts/stock_options.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/stock-options-calculator/SKILL.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stock Options Calculator

Calcula valor potencial de Stock Options em empresas de capital fechado e devolve cenários + talking points pra CHRO conduzir conversa com candidato/colaborador.

Dual-mode operation (Code + Cowork)

  • Claude Code: python3 scripts/stock_options.py ... (output rico com timeline visual).
  • Claude Cowork: cálculo inline. Mesma matemática, output em markdown.

Inline calculation logic (Cowork)

Inputs obrigatórios

  • grant (nº de opções)
  • strike (R$/opção)
  • fmv (R$/opção, FMV atual)
  • current_valuation (R$ da empresa)
  • shares_outstanding (total fully diluted)

Inputs opcionais com defaults

  • vesting_years = 4 · cliff_months = 12
  • rounds_until_exit = 2 · dilution_per_round = 20%
  • multipliers = [3, 5, 10, 50]

Cálculos

% da empresa hoje: grant / shares_outstanding × 100

% após diluição: % hoje × (1 - 0,20)^2 = × 0,64 (com defaults)

Valor intrínseco hoje (hipotético, sem liquidez): (fmv - strike) × grant

Vesting timeline (linear pós-cliff):

  • Ano 0: 0 opções (cliff)
  • Ano 1: 25% das opções
  • Ano 2: 50%
  • Ano 3: 75%
  • Ano 4: 100%

Cenário de exit (pra cada multiplier M):

  1. exit_valuation = current_valuation × M
  2. proceeds_pre_strike = exit_valuation × pct_após_diluição
  3. strike_cost = grant × strike
  4. net_proceeds = proceeds_pre_strike - strike_cost
  5. per_option = net_proceeds / grant
  6. vs_strike_multiple = (per_option + strike) / strike

Output markdown (Cowork)

## Stock Options: [empresa]

**Grant**: N opções · **Strike**: R$ X · **FMV**: R$ X
**Vesting**: 4 anos, cliff 12m
**Valuation atual**: R$ X · **% da empresa hoje**: Y%
**% após 2 rounds × 20% diluição**: Z%

### Vesting timeline
| Ano | Opções vested | % |
|---|---|---|
| 0 | 0 | 0% |
| 1 | N | 25% |
| ... | ... | ... |

### Cenários de exit (após diluição, antes de IR)
| Multiplier | Exit Valuation | Net pro você | ×Strike |
|---|---|---|---|
| 3x | R$ X | R$ X | Yx |
| 5x | R$ X | R$ X | Yx |
| 10x | R$ X | R$ X | Yx |
| 50x | R$ X | R$ X | Yx |

> IR sobre ganho de capital (15% até R$5M, escalonado) desconta do "Net", use como teto otimista.

### Talking points

1. **EQUITY ≠ DINHEIRO LÍQUIDO**: options não competem em cash, competem em multiplicação.
2. **SEM CASH SAINDO HOJE**: strike só exercido em exit.
3. **BINÁRIO: ESCALA OU ZERO**: honesto sobre risco.
4. **VESTING ALINHA DECISÃO**: contrato de parceria, não golden handcuff.
5. **PARCERIA, NÃO COMPENSAÇÃO**: pergunte "que tipo de parceiro eu quero ser?"

Framework: artigo Cajuína "Stock Options em empresas de capital fechado".

Read the full file on GitHub · 165 lines

Files

What ships with it

3 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. 9d ago First seen · 165 lines · 150 tokens per session scan A 194f99f71d5a

Subscribe to this mod's changes

stock-options-calculator is a skill published in the GitHub repository trycomp-io/comp-skills (2 stars, last pushed 3mo ago), licensed MIT. It adds 150 tokens to every session and 1,806 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.

Finance and fintechbrazilclaudeclaude-skillscompensationhrpeople-analytics
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