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Slash Command

Currency

Real-time currency conversion with exchange rates, historical trends, and

Type
Slash Command
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

  1. Download currency.md from the repository.
  2. 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.
  3. Run it by typing / followed by its name.

Claude Cowork

  1. Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
  2. In Customize → Skills, click +, then upload the ZIP.
  3. 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 rates

Process

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 Yen

2. 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 EUR

4. 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 dining

8. 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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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.