moonpay

moonpay is a skill for Claude Code, Codex from Demerzels-lab/elsamultiskillagent. It costs 29 tokens per session (1,634 once invoked), scanned A, original, MIT.

An integration for buying and selling cryptocurrency with regular money through MoonPay. Regular money, such as euros or dollars, is called fiat currency.

In plain words
What is it for?
Showing supported currencies, getting quotes, buying crypto, selling crypto for fiat, and enabling fiat-to-NFT checkout.
Why use it?
It connects card payments, bank transfers, and mobile payments with cryptocurrency purchases or sales.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Showing supported currencies, getting quotes, buying crypto, selling crypto for fiat, and enabling fiat-to-NFT checkout.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/demerzels-lab/elsamultiskillagent/moonpay
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Demerzels-lab/elsamultiskillagent --skill moonpay
Clone the repo
git clone --depth 1 https://github.com/Demerzels-lab/elsamultiskillagent

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for moonpay

README.md
[![agentmods](https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/moonpay/github.svg)](https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/moonpay)
Your own site
<a href="https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/moonpay"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/moonpay/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for moonpay

Your own site · 80×15
<a href="https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/moonpay"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/moonpay.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,634 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.01634
Opus 5 $0.00015 $0.00817
Sonnet 5 $0.00006 $0.00327
Haiku 4.5 $0.00003 $0.00163

Measured 11d ago against content hash 599081195025, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

moonpay scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

metadata: {"clawdbot":{"emoji":"🌙","always":true,"requires":{"bins":["curl","jq"]}}}
public/skills/0xterrybit/moonpay/SKILL.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MoonPay 🌙

Leading fiat-to-crypto on-ramp. Buy crypto with cards, bank transfers, and mobile payments in 160+ countries.

Environment Variables

Variable Description Required
MOONPAY_API_KEY Publishable API Key Yes
MOONPAY_SECRET_KEY Secret Key for signing Yes
MOONPAY_ENV sandbox or production No

Features

  • 💳 Card Payments - Visa, Mastercard, Apple Pay, Google Pay
  • 🏦 Bank Transfers - SEPA, ACH, Faster Payments
  • 📱 Mobile Payments - PIX, GCash, GrabPay
  • 🔄 Off-Ramp - Sell crypto to fiat
  • 🎨 NFT Checkout - Fiat-to-NFT purchases

API Base URLs

  • Sandbox: https://api.moonpay.com (use test API key)
  • Production: https://api.moonpay.com

Get Supported Currencies

API_KEY="${MOONPAY_API_KEY}"

# Get crypto currencies
curl -s "https://api.moonpay.com/v3/currencies" \
  -H "Authorization: Api-Key ${API_KEY}" | jq '.[] | select(.type == "crypto") | {code: .code, name: .name, minBuyAmount: .minBuyAmount}'

# Get fiat currencies
curl -s "https://api.moonpay.com/v3/currencies" \
  -H "Authorization: Api-Key ${API_KEY}" | jq '.[] | select(.type == "fiat") | {code: .code, name: .name}'

Get Quote

API_KEY="${MOONPAY_API_KEY}"
BASE_CURRENCY="usd"
QUOTE_CURRENCY="eth"
BASE_AMOUNT="100"

curl -s "https://api.moonpay.com/v3/currencies/${QUOTE_CURRENCY}/buy_quote" \
  -G \
  --data-urlencode "apiKey=${API_KEY}" \
  --data-urlencode "baseCurrencyCode=${BASE_CURRENCY}" \
  --data-urlencode "baseCurrencyAmount=${BASE_AMOUNT}" | jq '{
    quoteCurrencyAmount: .quoteCurrencyAmount,
    feeAmount: .feeAmount,
    networkFeeAmount: .networkFeeAmount,
    totalAmount: .totalAmount,
    extraFeeAmount: .extraFeeAmount
  }'

Generate Widget URL

API_KEY="${MOONPAY_API_KEY}"
SECRET_KEY="${MOONPAY_SECRET_KEY}"

# Build widget URL
BASE_URL="https://buy.moonpay.com"
PARAMS="?apiKey=${API_KEY}&currencyCode=eth&walletAddress=<WALLET>&baseCurrencyAmount=100"

# Sign URL (required for production)
SIGNATURE=$(echo -n "${PARAMS}" | openssl dgst -sha256 -hmac "${SECRET_KEY}" -binary | base64 | tr '+/' '-_' | tr -d '=')

WIDGET_URL="${BASE_URL}${PARAMS}&signature=${SIGNATURE}"
echo "Widget URL: $WIDGET_URL"

Read the full file on GitHub · 216 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 216 lines · 29 tokens per session scan A 599081195025

Subscribe to this mod's changes

moonpay is a skill published in the GitHub repository Demerzels-lab/elsamultiskillagent (10 stars, last pushed 3mo ago), licensed MIT. It adds 29 tokens to every session and 1,634 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.