Agent skill

Budget Builder

by mohitagw15856 in mohitagw15856/pm-claude-skills

Build a realistic personal monthly budget from someone's income and expenses.

MITAuto-check passedBusiness, Finance & HR

Install Budget Builder

skills CLI
$ npx skills add mohitagw15856/pm-claude-skills --skill budget-builder -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mohitagw15856/pm-claude-skills budget-builder --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/budget-builder .claude/skills/budget-builder && rm -rf skills-src

Use ~/.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/

Facts

Skill name
budget-builder
GitHub stars
1.4k
Token cost
~811 tokens
SKILL.md length
354 words
Files
1
Skills in repo
1,348
Repo updated
First seen
Licence
MIT

At a glance

Build a realistic personal monthly budget from someone's income and expenses.

  • Asked to make a budget
  • SKILL.md covers Required Inputs, Output Format, Quality Checks and Anti-Patterns, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Plan monthly spending

What it does

Budget Builder is an agent skill from mohitagw15856/pm-claude-skills. Build a realistic personal monthly budget from someone's income and expenses. Use when asked to make a budget, plan monthly spending, allocate income, or get finances under control. Produces a categorized budget (a 50/30/20-style allocation tuned to their reality), a surplus/shortfall number, and concrete next moves. Educational, not regulated financial advice.

Its SKILL.md is about 810 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. 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 make a budget
  • Plan monthly spending
  • Allocate income
  • Get finances under control

Example prompts

  • “/budget-builder”

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

    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

Budget Builder loads about 811 tokens when it runs. Until then it costs about 95 tokens; SKILL.md has 354 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~95
When it runs · the whole SKILL.md, loaded when a task matches
~811

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 mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 354 words, ~811 tokens.

Download SKILL.mdSave it as .claude/skills/budget-builder/SKILL.md (or your agent's skills folder).
name
budget-builder
description
Build a realistic personal monthly budget from someone's income and expenses. Use when asked to make a budget, plan monthly spending, allocate income, or get finances under control. Produces a categorized budget (a 50/30/20-style allocation tuned to their reality), a surplus/shortfall number, and concrete next moves. Educational, not regulated financial advice.

Budget Builder Skill

Most budgets fail because they're aspirational fiction. This skill builds a realistic monthly budget from someone's actual income and spending — categorized, with a clear surplus-or-shortfall number and a couple of specific moves to fix the gap. It's an educational planning aid, not personalized financial advice.

Required Inputs

Ask for these only if they aren't already provided:

  • Monthly take-home income (after tax), and whether it's steady or variable.
  • Fixed costs — rent/mortgage, utilities, insurance, loan/debt minimums, subscriptions.
  • Variable spending — groceries, transport, eating out, fun, shopping (estimates are fine).
  • Goals & obligations — emergency fund, debt payoff, saving for something, dependents.

If numbers are rough, work with ranges and say so.

Output Format

Monthly budget — [name/household]

Income (take-home): $X

CategoryTypeAmount% of income
HousingNeed$%
Utilities & billsNeed$%
GroceriesNeed$%
TransportNeed$%
Debt minimumsNeed$%
Dining / funWant$%
SubscriptionsWant$%
Savings / goalsSave$%
Total$100%

Needs / Wants / Savings split: X% / Y% / Z% — with a one-line read vs. a 50/30/20 guideline (a reference point, not a rule).

Bottom line: surplus of $X (allocate it) or shortfall of $X (must cut/earn).

Top 3 moves — the specific, highest-impact changes (e.g. "renegotiate the $X subscription stack", "cap dining at $Y", "auto-transfer $Z on payday").

Notes — assumptions, and for variable income, budget against a conservative (low) month.

Show full SKILL.md (143 more words)Show less

Quality Checks

  • Every dollar is assigned (expenses + savings = income; surplus/shortfall is explicit)
  • Categories are split into needs / wants / savings, with percentages
  • The plan is realistic for their actual spending — not an aspirational fantasy
  • Variable income is handled conservatively (budget the low month)
  • The top moves are specific and quantified, not "spend less"

Anti-Patterns

  • Do not present a budget that doesn't balance to income — name the surplus or shortfall
  • Do not set unrealistic cuts that won't survive week one — anchor to their real numbers
  • Do not ignore irregular costs (annual insurance, holidays) — prorate them monthly
  • Do not give generic advice — every recommendation should reference their figures
  • Do not present this as personalized financial advice — it's an educational plan to adapt

Based On

Personal budgeting practice (zero-based budgeting + the 50/30/20 needs/wants/savings guideline).

Example Trigger Phrases

  • "Make a budget."
  • "Plan monthly spending."
  • "Get finances under control."

© 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

Just SKILL.md in skills/budget-builder of mohitagw15856/pm-claude-skills.

Open the folder on GitHubat commit 1cbf1f0

Compare with similar skills

Budget Builder 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.

Budget Builder compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Budget Builder this skillmohitagw15856/pm-claude-skills1.4k—~811Automated safety check: PassMIT
Technical Analysttradermonty/claude-trading-skills3k4 repos~4.6kAutomated safety check: PassMIT
Theme Detectortradermonty/claude-trading-skills3k2 repos~4.9kAutomated safety check: PassMIT
Creating Financial ModelsChen-zexi/open-ptc-agent7293 repos~1.3kAutomated safety check: PassMIT
Stock APIzhangxiangliang/stock-api2k—~507Automated safety check: PassMIT
Itr Walakaranb192/itr-wala871—~3.6kAutomated safety check: PassMIT

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Questions about Budget Builder

What does Budget Builder do?

Build a realistic personal monthly budget from someone's income and expenses. Budget Builder is an agent skill from mohitagw15856/pm-claude-skills. Build a realistic personal monthly budget from someone's income and expenses.

When should I use Budget Builder?

Budget Builder fits situations like: asked to make a budget; plan monthly spending; allocate income; get finances under control.

How do I install Budget Builder in Claude Code?

Run `npx skills add mohitagw15856/pm-claude-skills --skill budget-builder -a claude-code`. Or copy the skill folder (skills/budget-builder in mohitagw15856/pm-claude-skills) into .claude/skills/budget-builder in your project. Claude Code loads it when a task matches its description.

How do I install Budget Builder in Codex?

Run `npx skills add mohitagw15856/pm-claude-skills --skill budget-builder -a codex`. Or copy the skill folder (skills/budget-builder in mohitagw15856/pm-claude-skills) into .agents/skills/budget-builder in your project. Codex loads it when a task matches its description.

Can I use Budget Builder 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 budget-builder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/budget-builder, .gemini/skills/budget-builder, .github/skills/budget-builder and .opencode/skills/budget-builder in your project.

What does Budget Builder need to run?

SKILL.md names no scripts, command-line tools or credentials: Budget Builder is instructions for the agent only.

Does Budget Builder 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 Budget Builder 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 Budget Builder use?

Budget Builder 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 Budget Builder use?

About 811 tokens (SKILL.md is roughly 3.2k 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 Budget Builder?

Skills that share tags, products or a category with Budget Builder: Technical Analyst (tradermonty/claude-trading-skills, 3k stars), Theme Detector (tradermonty/claude-trading-skills, 3k stars), Creating Financial Models (Chen-zexi/open-ptc-agent, 729 stars) and Stock API (zhangxiangliang/stock-api, 2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Budget Builder?

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.