# CoinsSend Documentation

> Crypto-processing service: multi-chain wallets, invoicing, withdrawals and asset-exchange API.

## Getting Started
- [CoinsSend API Documentation](https://docs.coinssend.com/README.md): Overview of the CoinsSend API and its public integration surface.
- [Getting Started with CoinsSend API](https://docs.coinssend.com/getting-started.md): Account setup and a guided first integration.
- [API Quickstart: invoice → webhook](https://docs.coinssend.com/QUICKSTART.md): Minimal invoice-to-webhook checkout workflow.
- [AI Integration Prompts](https://docs.coinssend.com/ai-integration-prompts.md): Guardrailed prompts for implementing CoinsSend with an AI coding agent.
- [Authentication](https://docs.coinssend.com/authentication.md): API keys, request signatures and withdrawal HMAC authentication.
- [API Reference](https://docs.coinssend.com/api-reference.md): Index of public API operations and related reference pages.

## API Endpoints
- [Invoices API](https://docs.coinssend.com/invoices.md): Create invoices and provider-card orders and understand invoice states.
- [Static Wallets API](https://docs.coinssend.com/static-wallets.md): Create static wallet addresses and process their notifications.
- [Withdrawals API](https://docs.coinssend.com/withdrawals.md): Initiate withdrawals and interpret their lifecycle.
- [Webhooks](https://docs.coinssend.com/webhooks.md): Verify and process invoice, wallet, AML and withdrawal webhooks.
- [Merchant API](https://docs.coinssend.com/merchants.md): Retrieve merchant balances and fee settings.
- [Coin Rates API](https://docs.coinssend.com/coin-rates.md): Retrieve rates, supported assets, networks and fees.
- [Error Handling](https://docs.coinssend.com/error-handling.md): Response shapes, error codes, retries and troubleshooting.
- [Rate Limits and Safe Retries](https://docs.coinssend.com/rate-limits.md): Rate-limit behavior and client-side backoff guidance.

## AI / Agent Integration
- [Documentation MCP Server](https://docs.coinssend.com/mcp.md): Connect AI agents to the read-only CoinsSend documentation MCP server.

## Code Examples
- [Code Examples in Multiple Languages](https://docs.coinssend.com/code-examples.md): Index and conventions for the multi-language examples.
- [CoinsSend API Examples](https://docs.coinssend.com/examples/README.md): Complete index of runnable integration examples.
- [PHP Example: Creating an Invoice](https://docs.coinssend.com/examples/php-invoice.md): Create an invoice with PHP.
- [Node.js Example: Creating an Invoice](https://docs.coinssend.com/examples/js-invoice.md): Create an invoice with JavaScript.
- [Python Example: Creating an Invoice](https://docs.coinssend.com/examples/python-invoice.md): Create an invoice with Python.
- [PHP Example: Creating a Static Wallet](https://docs.coinssend.com/examples/php-static-wallet.md): Manage static wallets with PHP.
- [Node.js Example: Creating a Static Wallet](https://docs.coinssend.com/examples/js-static-wallet.md): Manage static wallets with JavaScript.
- [Python Example: Creating a Static Wallet](https://docs.coinssend.com/examples/python-static-wallet.md): Manage static wallets with Python.
- [Node.js Example: Withdrawal and Webhook Receiver](https://docs.coinssend.com/examples/node-withdrawal.md): Initiate a signed withdrawal with Node.js.

## Machine-readable Resources
- [CoinsSend OpenAPI Contract](https://docs.coinssend.com/openapi.json): Machine-readable OpenAPI 3.1 contract for the public API.
- [Merchant Signature Test Vectors](https://docs.coinssend.com/signature-test-vectors.json): Public interoperability fixtures for canonical JSON, MD5 and timestamped HMAC signatures.