Creating Financial Models
Chen-zexi/open-ptc-agent
This skill provides an advanced financial modeling suite with DCF analysis, sensitivity testing, Monte Carlo simulations, and scenario planning for investment decisions
Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP).
Install Unit Economics Calculator
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install revfactory/harness-100 unit-economics-calculator --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .claude/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .claude/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculatorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install revfactory/harness-100 unit-economics-calculator --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .agents/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .agents/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .agents/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install revfactory/harness-100 unit-economics-calculator --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .cursor/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .cursor/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/revfactory/harness-100.git --path en/43-startup-launcher/.claude/skills/unit-economics-calculator--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install revfactory/harness-100 unit-economics-calculator --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .gemini/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .gemini/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install revfactory/harness-100 unit-economics-calculatorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .github/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .github/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .github/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill unit-economics-calculator -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install revfactory/harness-100 unit-economics-calculator --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/en/43-startup-launcher/.claude/skills/unit-economics-calculator .opencode/skills/unit-economics-calculator && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "unit-economics-calculator" agent skill from https://github.com/revfactory/harness-100/tree/main/en/43-startup-launcher/.claude/skills/unit-economics-calculator into .opencode/skills/unit-economics-calculator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-economics-calculator", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
unit-economics-calculator- GitHub stars
- 1.3k
- Token cost
- ~668 tokens
- SKILL.md length
- 72 words
- Files
- 1
- Skills in repo
- 274
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP).
- Unit economics calculation
- SKILL.md covers Target Agents, Core Metrics, Scenario Analysis Template and Industry Benchmarks
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- LTV calculation
What it does
Unit Economics Calculator is an agent skill from revfactory/harness-100. Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP). Use this skill for 'unit economics calculation', 'LTV calculation', 'CAC analysis', 'break-even point', 'per-customer economics', 'unit profitability', and other unit economics analysis tasks. Note: bookkeeping, tax filing, and financial auditing are outside the scope of this skill.
Its SKILL.md is about 670 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Business, Finance & HR, covering Financial modeling. The licence is Apache-2.0.
When your agent uses it
- Unit economics calculation
- LTV calculation
- Break-even point
- Per-customer economics
Example prompts
- “unit economics calculation”
- “LTV calculation”
- “CAC analysis”
- “/unit-economics-calculator”
What it can do on your machine
Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Unit Economics Calculator loads about 668 tokens when it runs. Until then it costs about 100 tokens; SKILL.md has 72 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 72 words, ~668 tokens.
Download SKILL.mdSave it as
.claude/skills/unit-economics-calculator/SKILL.md (or your agent's skills folder).- name
- unit-economics-calculator
- description
- Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP). Use this skill for 'unit economics calculation', 'LTV calculation', 'CAC analysis', 'break-even point', 'per-customer economics', 'unit profitability', and other unit economics analysis tasks. Note: bookkeeping, tax filing, and financial auditing are outside the scope of this skill.
Unit Economics Calculator — Unit Economics Calculation Methodology
A skill that enhances the business-modeler's financial analysis capabilities.
Target Agents
- business-modeler — Calculates unit economics systematically
- launch-reviewer — Validates financial assumptions
Core Metrics
CAC (Customer Acquisition Cost)
CAC = Total Marketing & Sales Spend / New Customers Acquired
Components:
- Advertising spend (paid channels)
- Sales team costs (salary + commission)
- Marketing tool costs
- Content production costs
Blended CAC vs. Channel-specific CACLTV (Lifetime Value)
Simple: LTV = ARPU x Average Customer Lifespan
Detailed: LTV = ARPU x Gross Margin x (1 / Churn Rate)
For subscription:
LTV = Monthly ARPU x Gross Margin x (1 / Monthly Churn Rate)
For e-commerce:
LTV = AOV x Purchase Frequency x Customer Lifespan x Gross MarginKey Ratios
LTV/CAC Ratio:
< 1x: Unsustainable (losing money per customer)
1-3x: Improving but risky
>= 3x: Healthy (industry benchmark)
> 5x: May be underinvesting in growth
Payback Period:
= CAC / Monthly Gross Profit per Customer
Target: <= 12 months (SaaS), <= 6 months (e-commerce)
Gross Margin:
= (Revenue - COGS) / Revenue x 100
SaaS target: 70-85%
E-commerce target: 30-50%
Marketplace target: 60-80% (of take rate)Break-Even Point (BEP)
BEP (units) = Fixed Costs / (Price - Variable Cost per Unit)
BEP (revenue) = Fixed Costs / Contribution Margin Ratio
Monthly BEP:
Fixed monthly costs / (ARPU - Variable cost per user)Scenario Analysis Template
| Metric | Conservative | Base | Optimistic |
|--------|-------------|------|-----------|
| Monthly new customers | | | |
| Churn rate | | | |
| ARPU | | | |
| CAC | | | |
| Gross margin | | | |
| LTV | | | |
| LTV/CAC | | | |
| Payback period | | | |
| Monthly burn | | | |
| Runway (months) | | | |
| BEP month | | | |Industry Benchmarks
| Metric | SaaS | E-Commerce | Marketplace |
|---|---|---|---|
| Gross Margin | 70-85% | 30-50% | 60-80% |
| LTV/CAC | >= 3x | >= 3x | >= 3x |
| Payback | <= 12mo | <= 6mo | <= 12mo |
| Churn (monthly) | 3-7% | N/A | 5-10% |
| NRR | > 100% | N/A | N/A |
© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in en/43-startup-launcher/.claude/skills/unit-economics-calculator of revfactory/harness-100.
Open the folder on GitHubat commit 8e8d35c
Compare with similar skills
Unit Economics Calculator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Unit Economics Calculator this skillrevfactory/harness-100 | 1.3k | — | ~668 | Automated safety check: Pass | Apache-2.0 | |
| Creating Financial ModelsChen-zexi/open-ptc-agent | 729 | 3 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Equity ResearchrollingSirius/equity-research-skill | 453 | — | ~1.5k | Automated safety check: Pass | MIT | |
| SaaS Metrics Coachrongxinzy/RongxinAI | 154 | 2 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Startup Financial Modelingnicepkg/auto-company | 195 | 11 repos | ~2.8k | Automated safety check: Pass | None | |
| Stock Value AnalyzerFunnyKun/stock-value-analyzer | 141 | — | ~3.3k | Automated safety check: Pass | None |
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Related
Categories
Questions about Unit Economics Calculator
What does Unit Economics Calculator do?
Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP). Unit Economics Calculator is an agent skill from revfactory/harness-100. Methodology for systematically calculating startup unit economics (LTV, CAC, margin, BEP).
When should I use Unit Economics Calculator?
Unit Economics Calculator fits situations like: unit economics calculation; LTV calculation; break-even point; per-customer economics.
How do I install Unit Economics Calculator in Claude Code?
Run `npx skills add revfactory/harness-100 --skill unit-economics-calculator -a claude-code`. Or copy the skill folder (en/43-startup-launcher/.claude/skills/unit-economics-calculator in revfactory/harness-100) into .claude/skills/unit-economics-calculator in your project. Claude Code loads it when a task matches its description.
How do I install Unit Economics Calculator in Codex?
Run `npx skills add revfactory/harness-100 --skill unit-economics-calculator -a codex`. Or copy the skill folder (en/43-startup-launcher/.claude/skills/unit-economics-calculator in revfactory/harness-100) into .agents/skills/unit-economics-calculator in your project. Codex loads it when a task matches its description.
Can I use Unit Economics Calculator in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill unit-economics-calculator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unit-economics-calculator, .gemini/skills/unit-economics-calculator, .github/skills/unit-economics-calculator and .opencode/skills/unit-economics-calculator in your project.
What does Unit Economics Calculator need to run?
SKILL.md names no scripts, command-line tools or credentials: Unit Economics Calculator is instructions for the agent only.
Does Unit Economics Calculator access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Unit Economics Calculator safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Unit Economics Calculator use?
Unit Economics Calculator is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Unit Economics Calculator use?
About 668 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Unit Economics Calculator?
Skills that share tags, products or a category with Unit Economics Calculator: Creating Financial Models (Chen-zexi/open-ptc-agent, 729 stars), Equity Research (rollingSirius/equity-research-skill, 453 stars), SaaS Metrics Coach (rongxinzy/RongxinAI, 154 stars) and Startup Financial Modeling (nicepkg/auto-company, 195 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Unit Economics Calculator?
revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,295 GitHub stars. The repository holds 274 skills in this directory. The repository was last updated on March 22, 2026.
Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.