# Fixer — MCP server on 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.

By: mcp.ai · official
Page: https://mcp.ai/fixer

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_fixer?ms=1787291520000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/fixer/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/fixer/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/fixer/skill.md
Postman collection (v2.1): https://mcp.ai/fixer/postman.json

## Tools
- fixer_get_historical_rates(base?: string, date: string, symbols?: string[]) — Tool to get historical exchange rate data for a specific date. Use when you need past currency rates for all or selected currencies.
- fixer_get_latest_rates(base?: string, symbols?: string[]) — 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.
- 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"

## Links
Docs: https://mcp.ai/docs/mcps/fixer
Website: https://mcp.ai/mcps/fixer