Task Effort Estimator
Donchitos/Claude-Code-Game-Studios
Estimates the effort for a game development task from code complexity, scope, risk and past sprint data, returning a range with a confidence level.
Estimate the ROI, payback, and NPV of an investment, project, or purchase.
MITAuto-check passed
Install Roi Estimator
$ npx skills add mohitagw15856/pm-claude-skills --skill roi-estimator -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitagw15856/pm-claude-skills roi-estimator --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/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/roi-estimator .claude/skills/roi-estimator && 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 "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .claude/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimatorType 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 mohitagw15856/pm-claude-skills --skill roi-estimator -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitagw15856/pm-claude-skills roi-estimator --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/roi-estimator .agents/skills/roi-estimator && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .agents/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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 mohitagw15856/pm-claude-skills --skill roi-estimator -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitagw15856/pm-claude-skills roi-estimator --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/roi-estimator .cursor/skills/roi-estimator && 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 "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .cursor/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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/mohitagw15856/pm-claude-skills.git --path skills/roi-estimator--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 mohitagw15856/pm-claude-skills --skill roi-estimator -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitagw15856/pm-claude-skills roi-estimator --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/roi-estimator .gemini/skills/roi-estimator && 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 "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .gemini/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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 mohitagw15856/pm-claude-skills roi-estimatorInstalls 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 mohitagw15856/pm-claude-skills --skill roi-estimator -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/roi-estimator .github/skills/roi-estimator && 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 "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .github/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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 mohitagw15856/pm-claude-skills --skill roi-estimator -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitagw15856/pm-claude-skills roi-estimator --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/roi-estimator .opencode/skills/roi-estimator && 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 "roi-estimator" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/roi-estimator into .opencode/skills/roi-estimator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "roi-estimator", 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
roi-estimator- GitHub stars
- 1.4k
- Token cost
- ~848 tokens
- SKILL.md length
- 390 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 1,348
- Repo updated
- First seen
- Licence
- MIT
At a glance
Estimate the ROI, payback, and NPV of an investment, project, or purchase.
- Asked to calculate ROI
- SKILL.md covers Required Inputs, Output Format, Programmatic Helper and Quality Checks, plus 3 more sections
- Runs Python scripts from its folder; calls python3
- Build a business case
What it does
Roi Estimator is an agent skill from mohitagw15856/pm-claude-skills. Estimate the ROI, payback, and NPV of an investment, project, or purchase. Use when asked to calculate ROI, build a business case, justify a purchase/initiative, work out payback period, or compare options by return. Produces a computed ROI summary (net benefit, ROI %, payback, simple NPV) with the assumptions made explicit and a sensitivity note, so a business case is defensible.
Its SKILL.md is about 850 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/roi.py`).
The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.
When your agent uses it
- Asked to calculate ROI
- Build a business case
- Justify a purchase/initiative
- Work out payback period
Example prompts
- “/roi-estimator”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 1cbf1f0. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Roi Estimator loads about 848 tokens when it runs. Until then it costs about 99 tokens; SKILL.md has 390 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); the scripts in this folder are not scanned.
SKILL.md
The full file from mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 390 words, ~848 tokens.
Download SKILL.mdSave it as
.claude/skills/roi-estimator/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- roi-estimator
- description
- Estimate the ROI, payback, and NPV of an investment, project, or purchase. Use when asked to calculate ROI, build a business case, justify a purchase/initiative, work out payback period, or compare options by return. Produces a computed ROI summary (net benefit, ROI %, payback, simple NPV) with the assumptions made explicit and a sensitivity note, so a business case is defensible.
ROI Estimator Skill
Every "should we spend on this?" decision needs a defensible number. This skill estimates the return — ROI %, payback period, and a simple NPV that accounts for the time value of money — from costs and expected benefits, with the assumptions stated and a sensitivity check, so a business case survives the first sceptical question instead of collapsing.
Required Inputs
Ask for these only if they aren't already provided:
- Costs — upfront cost, and any ongoing/recurring cost (per period).
- Benefits — the expected gain per period (revenue uplift, cost saved, time saved × loaded rate). Quantify; if it's an estimate, say so.
- Time horizon — over how many periods to evaluate (e.g. 3 years).
- Discount rate — for NPV (default ~10%); state it.
Output Format
ROI: [investment]
1. The numbers (via the helper):
| Metric | Value |
|---|---|
| Total cost (over horizon) | |
| Total benefit (over horizon) | |
| Net benefit | |
| ROI % | |
| Payback period | |
| Simple NPV (@ discount rate) |
2. The verdict — worth it / marginal / no, in one line, and against what bar (e.g. beats the discount-rate hurdle, payback within tolerance).
3. Assumptions — list them explicitly. The benefit is usually the soft number — flag it, and give a conservative / expected / optimistic range rather than a single point.
4. Sensitivity — the one assumption the conclusion hinges on, and at what value the decision flips.
Programmatic Helper
scripts/roi.py (stdlib only) computes ROI, payback, and NPV:
# in.json: {"upfront_cost":50000,"recurring_cost":2000,"benefit_per_period":18000,"periods":36,"discount_rate_annual":0.1,"period":"month"}
python3 scripts/roi.py in.json
python3 scripts/roi.py in.json --jsonShow full SKILL.md (168 more words)Show less
Quality Checks
- Costs include recurring/ongoing, not just upfront
- NPV is computed (time value of money), not just raw ROI
- Benefits are given as a range (conservative/expected/optimistic), not a single optimistic point
- Every assumption is listed explicitly
- A sensitivity note names the assumption the verdict hinges on and its flip point
Anti-Patterns
- Do not ignore ongoing costs — a low upfront, high-recurring option can lose to a pricier one-time buy
- Do not present a single benefit number as fact — it's the softest input; give a range and flag it
- Do not skip discounting for multi-year cases — $1 in year 3 isn't $1 today
- Do not bury the assumptions — a business case is only as credible as its stated inputs
- Do not omit payback — a great 5-year ROI with a 4-year payback may still be too slow to fund
Based On
Business-case / capital-budgeting practice — ROI, payback period, NPV, and assumption sensitivity.
Example Trigger Phrases
- "Calculate ROI."
- "Build a business case."
- "Justify a purchase/initiative."
- "Work out payback period."
- "Compare options by return."
© mohitagw15856, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in skills/roi-estimator of mohitagw15856/pm-claude-skills.
- SKILL.md
- scripts/roi.py
Open the folder on GitHubat commit 1cbf1f0
Compare with similar skills
Roi Estimator 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 |
|---|---|---|---|---|---|---|
| Roi Estimator this skillmohitagw15856/pm-claude-skills | 1.4k | — | ~848 | Automated safety check: Pass | MIT | |
| Task Effort EstimatorDonchitos/Claude-Code-Game-Studios | 26k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Purchase Accountingsickn33/agentic-awesome-skills | 47k | 1 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Progressive Estimationsickn33/agentic-awesome-skills | 47k | 2 repos | ~863 | Automated safety check: Pass | MIT | |
| Odoo Purchase Workflowsickn33/agentic-awesome-skills | 47k | 2 repos | ~1k | Automated safety check: Pass | MIT | |
| Ljg Investlijigang/ljg-skills | 7.5k | — | ~721 | Automated safety check: Pass | MIT |
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Questions about Roi Estimator
What does Roi Estimator do?
Estimate the ROI, payback, and NPV of an investment, project, or purchase. Roi Estimator is an agent skill from mohitagw15856/pm-claude-skills. Estimate the ROI, payback, and NPV of an investment, project, or purchase.
When should I use Roi Estimator?
Roi Estimator fits situations like: asked to calculate ROI; build a business case; justify a purchase/initiative; work out payback period.
How do I install Roi Estimator in Claude Code?
Run `npx skills add mohitagw15856/pm-claude-skills --skill roi-estimator -a claude-code`. Or copy the skill folder (skills/roi-estimator in mohitagw15856/pm-claude-skills) into .claude/skills/roi-estimator in your project. Claude Code loads it when a task matches its description.
How do I install Roi Estimator in Codex?
Run `npx skills add mohitagw15856/pm-claude-skills --skill roi-estimator -a codex`. Or copy the skill folder (skills/roi-estimator in mohitagw15856/pm-claude-skills) into .agents/skills/roi-estimator in your project. Codex loads it when a task matches its description.
Can I use Roi Estimator 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 mohitagw15856/pm-claude-skills --skill roi-estimator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/roi-estimator, .gemini/skills/roi-estimator, .github/skills/roi-estimator and .opencode/skills/roi-estimator in your project.
What does Roi Estimator need to run?
Going by SKILL.md and its folder, Roi Estimator needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Roi Estimator 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 Roi Estimator 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Roi Estimator use?
Roi Estimator is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Roi Estimator use?
About 848 tokens (SKILL.md is roughly 3.4k 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 Roi Estimator?
Skills that share tags, products or a category with Roi Estimator: Task Effort Estimator (Donchitos/Claude-Code-Game-Studios, 26k stars), Purchase Accounting (sickn33/agentic-awesome-skills, 47k stars), Progressive Estimation (sickn33/agentic-awesome-skills, 47k stars) and Odoo Purchase Workflow (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Roi Estimator?
mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.
Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.