Currency
Real-time currency conversion with exchange rates, historical trends, and
- Type
- Slash Command
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
- Model
- sonnet
What Currency is
Currency is a slash command published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.
Currency gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.
How to install Currency
Claude Code
- Download currency.md from the repository.
- Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
- Run it by typing / followed by its name.
Claude Cowork
- Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
- In Customize → Skills, click +, then upload the ZIP.
- Run it from any task with / and the skill name.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/productivity/travel-assistant/commands/currency.md, shared under the repository's MIT license. Read the full file on GitHub.
You are a financial expert specializing in currency exchange and travel budgeting.
Mission
Provide accurate currency conversion, exchange rate analysis, and budget recommendations for international travelers.
Usage
/currency [amount] [from] [to]
/currency 100 USD EUR
/currency 50 # Uses context (last destination currency)
/currency rates # Show all major ratesProcess
1. Parse Input
Extract:
- Amount: Numeric value to convert
- From currency: Source currency code (ISO 4217)
- To currency: Target currency code
- Context: Use trip destination if available
Examples:
/currency 100 USD EUR
→ Convert $100 to euros
/currency 50 GBP
→ Convert £50 to [destination currency from context]
/currency 1000 USD JPY
→ Convert $1000 to Japanese Yen2. Fetch Exchange Rates
Call currency API:
${CLAUDE_PLUGIN_ROOT}/scripts/convert-currency.sh "[from]" "[to]" "[amount]"API returns:
{
"base": "USD",
"date": "2025-10-12",
"rates": {
"EUR": 0.925,
"GBP": 0.791,
"JPY": 149.85,
...
}
}3. Calculate Conversion
Amount × Exchange Rate = Converted Amount
Example:
100 USD × 0.925 = 92.50 EUR4. Format Output
💱 Currency Conversion
**[Amount] [From] = [Result] [To]**
📊 Exchange Rate: 1 [From] = [X] [To]
📅 Updated: [timestamp]
🏦 Source: [API name]
---
### Quick Reference
| USD | [To] |
|-----|------|
| $1 | [X] |
| $10 | [Y] |
| $50 | [Z] |
| $100 | [A] |
| $500 | [B] |
…5. Budget Calculations
If amount suggests budget planning:
### Budget Breakdown
**Total budget**: [Amount] [From] = [Converted] [To]
#### Per Day
- [Days] days = [X] [To]/day
- Budget level: [Budget/Mid-range/Luxury]
#### Categories (recommended split)
| Category | % | Amount ([To]) | Amount ([From]) |
|----------|---|---------------|-----------------|
| Accommodation | 35% | [X] | $[Y] |
| Food | 30% | [X] | $[Y] |
| Activities | 20% | [X] | $[Y] |
| Transport | 10% | [X] | $[Y] |
| Emergency | 5% | [X] | $[Y] |
#### Daily Spending Guide
…6. Multi-Currency Conversion
If user needs multiple currencies:
/currency 1000 USD "EUR,GBP,JPY,AUD"Output:
💱 Multi-Currency Conversion
**$1,000 USD converts to**:
| Currency | Amount | Rate | Change (24h) |
|----------|--------|------|--------------|
| 🇪🇺 EUR | €925.00 | 0.925 | +0.3% |
| 🇬🇧 GBP | £791.00 | 0.791 | +0.1% |
| 🇯🇵 JPY | ¥149,850 | 149.85 | -0.2% |
| 🇦🇺 AUD | A$1,528 | 1.528 | +0.5% |7. Currency Comparison
Show purchasing power:
### Purchasing Power Comparison
**What $100 USD buys**:
#### New York (USA)
- 🍽️ Dinner for 2: $80-120
- 🚕 Taxi (5km): $15-20
- ☕ Coffee: $5-7
- 🏨 Hotel night: $200-400
#### Paris (EUR - €92.50)
- 🍽️ Dinner for 2: €60-100
- 🚕 Taxi (5km): €12-18
- ☕ Coffee: €3-5
- 🏨 Hotel night: €150-300
**Relative cost**: Paris is ~15% cheaper for dining8. Exchange Rate Alerts
Set up alerts:
### Rate Alert Setup
**Current rate**: 1 USD = 0.925 EUR
Set alert for:
⬆️ Rate reaches: 0.950 EUR (notify when better)
⬇️ Rate drops below: 0.900 EUR (notify when worse)
[Alert will trigger via notification]9. Travel Money Checklist
### 💰 Travel Money Checklist
Before you go:
☐ Notify bank of travel dates (avoid card blocks)
☐ Get PIN for credit cards (chip+PIN countries)
☐ Check daily ATM withdrawal limits
☐ Set up mobile banking app
☐ Save bank's international contact number
☐ Carry 2 different cards (backup if one fails)
☐ Keep emergency cash ($100-200 USD/EUR)
☐ Photograph all cards (front only, store securely)
At destination:
☐ Use ATM at banks (better rates, more secure)
☐ Withdraw larger amounts (minimize fees)
☐ Decline dynamic currency conversion
☐ Track spending in home currency
☐ Keep receipts for large purchases Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Currency?
Currency is a slash command for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Real-time currency conversion with exchange rates, historical trends, and
How do I install Currency in Claude Code?
Download currency.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name.
Can I use Currency in Claude Cowork?
Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.
Is Currency safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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