# Fixer — how to use (mcp.ai)

Connect your Fixer account and use 3 tools for developer tools straight from your AI agent. Connect with your own API key. Fixer is a currency data API providing real-time and historical exchange rates for 170 world currencies.

## Option A — via MCP (recommended)
Remote MCP endpoint (HTTP, streamable): `https://api.mcp.ai/p_fixer?ms=1787291520000`
Add it as a custom/remote MCP connector in your client (Claude, Cursor, VS Code…), then authenticate when prompted. Once connected, ask the agent to use the server's tools (e.g. `fixer_get_historical_rates`).

## Option B — via direct REST API
Base URL: `https://api.mcp.ai/api/fixer`
Auth: `Authorization: Bearer sk_live_…` — create a workspace API key at https://mcp.ai/settings/api-keys
Discover endpoints: `GET https://api.mcp.ai/api/fixer/_endpoints`

### Endpoints
- `POST https://api.mcp.ai/api/fixer/get/historical/rates` — Tool to get historical exchange rate data for a specific date. Use when you need past currency rates for all or selected currencies.
  - body: { base?: string, date: string, symbols?: string[] }
- `POST https://api.mcp.ai/api/fixer/get/latest/rates` — Tool to get real-time exchange rate data for all available or specified currencies. Use when you need current forex rates before performing currency conversions.
  - body: { base?: string, symbols?: string[] }
- `POST https://api.mcp.ai/api/fixer/get/supported/symbols` — Tool to retrieve all supported currency symbols and their full names. Use when you need to display or validate available currencies before performing conversions.

## Example prompts
- "What can I do in Fixer?"
- "Show me a summary of my Fixer account"

## More
- Page: https://mcp.ai/fixer
- Agent spec (llms.txt): https://mcp.ai/fixer/llms.txt
- Postman collection: https://mcp.ai/fixer/postman.json