Brokerage Screenshot Trade Extractor
guilhermecgs/ir
Reads screenshots of brokerage or portfolio transaction tables, checks the rows for duplicates and prints lines you can paste into your operations file by hand.
Calculates value-added tax from a tax-inclusive sales amount, VAT rate and input tax using a calculator tool, with risk checks and filing suggestions.
Install VAT Calculation
$ npx skills add Serein-81/financial_rag --skill vat-calculation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Serein-81/financial_rag vat-calculation --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/Serein-81/financial_rag.git skills-src && mkdir -p .claude/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .claude/skills/vat-calculation && 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 "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .claude/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculationType 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 Serein-81/financial_rag --skill vat-calculation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Serein-81/financial_rag vat-calculation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Serein-81/financial_rag.git skills-src && mkdir -p .agents/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .agents/skills/vat-calculation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .agents/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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 Serein-81/financial_rag --skill vat-calculation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Serein-81/financial_rag vat-calculation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Serein-81/financial_rag.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .cursor/skills/vat-calculation && 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 "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .cursor/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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/Serein-81/financial_rag.git --path rag_backend/skills/tax/vat-calculation--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 Serein-81/financial_rag --skill vat-calculation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Serein-81/financial_rag vat-calculation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Serein-81/financial_rag.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .gemini/skills/vat-calculation && 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 "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .gemini/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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 Serein-81/financial_rag vat-calculationInstalls 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 Serein-81/financial_rag --skill vat-calculation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Serein-81/financial_rag.git skills-src && mkdir -p .github/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .github/skills/vat-calculation && 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 "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .github/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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 Serein-81/financial_rag --skill vat-calculation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Serein-81/financial_rag vat-calculation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Serein-81/financial_rag.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/rag_backend/skills/tax/vat-calculation .opencode/skills/vat-calculation && 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 "vat-calculation" agent skill from https://github.com/Serein-81/financial_rag/tree/main/rag_backend/skills/tax/vat-calculation into .opencode/skills/vat-calculation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "vat-calculation", 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
vat-calculation- GitHub stars
- 148
- Token cost
- ~894 tokens
- SKILL.md length
- 228 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- None found
At a glance
Calculates value-added tax from a tax-inclusive sales amount, VAT rate and input tax using a calculator tool, with risk checks and filing suggestions.
- Works in 5 steps: Collect Required Parameters → Calculate Using Tool → Compliance Check (if risk_issues… → …
- Calculating the VAT payable on a sales amount after deducting input tax
- SKILL.md covers Overview, Workflow, Error Handling and Gotchas
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
The agent gathers three inputs: the tax-inclusive sales amount, the VAT rate (13%, 9%, 6%, 3% or 1%, defaulting to 13%) and an optional input tax figure. Percentages are converted to decimals, a general taxpayer with no stated rate gets 13% and a small-scale taxpayer gets 3%. It then calls `tax_calculator` instead of doing the arithmetic itself, and the tool returns output tax, input tax, payable VAT, a list of risk issues and recommendations.
If risk issues come back, the `tax_compliance_checker` tool produces a compliance report. Results are shown as a structured summary in Chinese, including a note on carry-forward credit when the payable amount is negative, and the agent offers follow-ups such as corporate income tax through the `corporate-tax-check` skill, a policy lookup or a CSV export. Rates outside the legal list and zero sales amounts trigger warnings, and a direct formula in Python is the fallback if the tool fails. Export rebates and tax-exempt sales are out of scope.
When your agent uses it
- Calculating the VAT payable on a sales amount after deducting input tax
- Checking a VAT rate against the legal list before filing
- Getting risk flags and filing recommendations for a VAT figure
- Exporting VAT calculation details to CSV
Example prompts
- “Work out the VAT payable on our sales at the 13% rate after deducting input tax.”
- “I'm a small-scale taxpayer, so compute VAT at the 3% rate for this month's sales.”
- “Check whether this VAT calculation has any compliance risks.”
- “Export the VAT calculation details to a CSV file.”
Requirements
- Python 3
- The `tax_calculator`, `tax_compliance_checker` and `execute_python` tools
- Compatibility (from SKILL.md): Requires: python3 Tools: tax_calculator, tax_compliance_checker, execute_python
- Pre-approved tools (allowed-tools): Bash, Read
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Collect Required Parameters
- Calculate Using Tool
- Compliance Check (if risk_issues non-empty)
- Present Result
- Follow-up
What it can do on your machine
Read from SKILL.md and the folder at commit 94b16cd. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashRead
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are json).
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.
Compatibility
Requires: python3 Tools: tax_calculator, tax_compliance_checker, execute_python
From compatibility in the SKILL.md frontmatter.
Context cost
VAT Calculation loads about 894 tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 228 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read
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
Without a licence we can't republish the file, so here is its outline and opening line. It has 228 words (~894 tokens).
“Guide the user through a precise, auditable VAT (增值税) calculation. Follow the collect → calculate → validate → report workflow.”
- name
- vat-calculation
- allowed-tools
- Bash, Read
- compatibility
- Requires: python3 Tools: tax_calculator, tax_compliance_checker, execute_python
- when_to_use
- Activate when the user needs a deterministic VAT calculation, not a general policy explanation. The skill: collects parameters → calls tax_calculator tool for…
- metadata.author
- internal-tax-team
- metadata.version
- 1.0
- metadata.domain
- tax
Files
Just SKILL.md in rag_backend/skills/tax/vat-calculation of Serein-81/financial_rag.
Open the folder on GitHubat commit 94b16cd
Compare with similar skills
VAT Calculation 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 |
|---|---|---|---|---|---|---|
| VAT Calculation this skillSerein-81/financial_rag | 148 | — | ~894 | Automated safety check: Notes | None | |
| Brokerage Screenshot Trade Extractorguilhermecgs/ir | 179 | — | ~1.2k | Automated safety check: Pass | MPL-2.0 | |
| Itr Walakaranb192/itr-wala | 871 | — | ~3.6k | Automated safety check: Pass | MIT | |
| CICPA Company Registration Querynigo81/nigo-skills | 133 | — | ~2.8k | Automated safety check: Pass | MIT | |
| Beancount Importer Authorbex-co/beancount-io | 297 | — | ~2k | Automated safety check: Pass | MIT | |
| Travel Expense ReimbursementFoxtailsss-Andy/Anna-Agent | 147 | — | ~812 | Automated safety check: Pass | MIT |
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Enterprise Tax Profile Matching
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Builds a six-dimension profile of a company and matches it against tax policies to find applicable incentives, obligations, risks and optimization options.
Financial Data Entry
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Legal Compliance Search
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Looks up current company registration rules, industry licences and compliance obligations in China through live web search, tailored to the business profile.
Tax Law Research
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Searches current Chinese tax laws, rates and policy changes with Tavily web search, prioritizing government sources and flagging outdated or conflicting results.
Policy Crawl Pipeline
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Chinese Corporate Income Tax Check
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Related
Works with
Categories
Questions about VAT Calculation
What does VAT Calculation do?
Calculates value-added tax from a tax-inclusive sales amount, VAT rate and input tax using a calculator tool, with risk checks and filing suggestions. The agent gathers three inputs: the tax-inclusive sales amount, the VAT rate (13%, 9%, 6%, 3% or 1%, defaulting to 13%) and an optional input tax figure. Percentages are converted to decimals, a general taxpayer with no stated rate gets 13% and a small-scale taxpayer gets 3%.
When should I use VAT Calculation?
VAT Calculation fits situations like: calculating the VAT payable on a sales amount after deducting input tax; checking a VAT rate against the legal list before filing; getting risk flags and filing recommendations for a VAT figure; exporting VAT calculation details to CSV.
How do I install VAT Calculation in Claude Code?
Run `npx skills add Serein-81/financial_rag --skill vat-calculation -a claude-code`. Or copy the skill folder (rag_backend/skills/tax/vat-calculation in Serein-81/financial_rag) into .claude/skills/vat-calculation in your project. Claude Code loads it when a task matches its description.
How do I install VAT Calculation in Codex?
Run `npx skills add Serein-81/financial_rag --skill vat-calculation -a codex`. Or copy the skill folder (rag_backend/skills/tax/vat-calculation in Serein-81/financial_rag) into .agents/skills/vat-calculation in your project. Codex loads it when a task matches its description.
Can I use VAT Calculation 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 Serein-81/financial_rag --skill vat-calculation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/vat-calculation, .gemini/skills/vat-calculation, .github/skills/vat-calculation and .opencode/skills/vat-calculation in your project.
What does VAT Calculation need to run?
SKILL.md names no scripts, command-line tools or credentials: VAT Calculation is instructions for the agent only. Our summary lists: Python 3; The `tax_calculator`, `tax_compliance_checker` and `execute_python` tools. Its frontmatter pre-approves these tools: Bash, Read. Compatibility (from SKILL.md): Requires: python3 Tools: tax_calculator, tax_compliance_checker, execute_python .
Does VAT Calculation 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 VAT Calculation safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does VAT Calculation use?
No licence was found for VAT Calculation or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does VAT Calculation use?
About 894 tokens (SKILL.md is roughly 3.6k 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 VAT Calculation?
Skills that share tags, products or a category with VAT Calculation: Brokerage Screenshot Trade Extractor (guilhermecgs/ir, 179 stars), Itr Wala (karanb192/itr-wala, 871 stars), CICPA Company Registration Query (nigo81/nigo-skills, 133 stars) and Beancount Importer Author (bex-co/beancount-io, 297 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains VAT Calculation?
Serein-81 (a GitHub user) maintains it in Serein-81/financial_rag, which has 148 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on June 5, 2026.
Source: Serein-81/financial_rag on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.