Buy gift cards & mobile top ups online — instant delivery | Koomalooma

# Cryptorefills API > Buy gift cards, top up mobile phones, and purchase travel eSIMs with cryptocurrency. 10,500+ brands across 180+ countries. No account, OAuth, or API key required for MCP or x402 flows. Cryptorefills is a cryptocurrency-powered marketplace for digital goods. Users and AI agents pay with Bitcoin, Lightning, Ethereum, Solana, USDC, USDT, and 15+ other cryptocurrencies across Base, Polygon, Arbitrum, Tron, TON, SUI, and more networks. The API is agent-native: autonomous purchasing via the Model Context Protocol (MCP) or the x402 HTTP payment protocol works without any account or credential provisioning. ## Discovery - [API catalog (this endpoint's parent, RFC 9727)](https://api.cryptorefills.com/.well-known/api-catalog) - [MCP manifest (machine-readable service description)](https://api.cryptorefills.com/.well-known/mcp.json) - [Agent Skills index (RFC v0.2.0)](https://api.cryptorefills.com/.well-known/agent-skills/index.json) - [Health / liveness probe](https://api.cryptorefills.com/healthz) ## Published Agent Skills - [cryptorefills-buy](https://api.cryptorefills.com/.well-known/agent-skills/cryptorefills-buy/SKILL.md) — full MCP purchase workflow (search, price, order, pay, track) - [cryptorefills-catalog](https://api.cryptorefills.com/.well-known/agent-skills/cryptorefills-catalog/SKILL.md) — read-only product discovery (brands, countries, categories) - [cryptorefills-x402](https://api.cryptorefills.com/.well-known/agent-skills/cryptorefills-x402/SKILL.md) — autonomous agent commerce via x402 HTTP 402 + USDC on Base ## MCP Transports - HTTP streaming: `POST https://api.cryptorefills.com/mcp/http` - Server-Sent Events: `GET` or `POST https://api.cryptorefills.com/mcp/sse` - Required header: `User-Agent: Cryptorefills-MCP/1.0` ## Selected REST Endpoints (Public, Unauthenticated) - `GET /v5/products/country/:country_code` — list products purchasable in a country - `GET /v5/products` — search products by brand or product family