How to connect Fixer io to Claude Cowork

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Fixer io account to Cowork via Composio Connect, enabling it to convert 150 USD to EUR today, show exchange rate trends for GBP last month, list all supported currency codes and names, and more such actions on your behalf without compromising your account security.

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Api Key

Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free.

5 Tools

Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Fixer io account to Cowork via Composio Connect, enabling it to convert 150 USD to EUR today, show exchange rate trends for GBP last month, list all supported currency codes and names, and more such actions on your behalf without compromising your account security.

Also integrate Fixer io with

OpenAI Agents SDKClaude Agent SDKClaude CodeCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

Connecting Fixer io to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Fixer io account

Back in Cowork, ask the agent to connect to Fixer io or give it any Fixer io-related task.

For example, ask Cowork to:

  • "Convert 150 USD to EUR today"
  • "Show exchange rate trends for GBP last month"
  • "List all supported currency codes and names"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Fixer io account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Fixer io through MCP without you sharing account credentials directly with the agent.

What is the Fixer io MCP server, and what's possible with it?

The Fixer io MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Fixer io account. It provides structured and secure access to global currency exchange data, so your agent can perform actions like converting currencies, fetching historical rates, tracking exchange fluctuations, and listing supported symbols on your behalf.

  • Real-time currency conversion: Instantly convert amounts between currencies using up-to-date or historical exchange rates with a single prompt.
  • Fetch latest and historical rates: Let your agent retrieve the most recent exchange rates or get historical rates for any supported date to power financial analysis.
  • Analyze currency fluctuations: Ask your agent to track and summarize day-to-day currency changes between two dates to monitor trends or volatility.
  • Retrieve supported currency symbols: Quickly list all available currency codes and their full names to support app interfaces or custom workflows.
  • Get exchange rate time series: Easily pull daily exchange rates over a custom period (up to 365 days) for detailed trend analysis or reporting.
TOOLS

Supported Tools

Every Fixer io action and event your agent gets out of the box.

Convert Currency

Tool to convert an amount from one currency to another.

Get Currency Fluctuations

Tool to fetch exchange rate fluctuations between two dates.

Get Historical Rates

Fetch historical exchange rates for a specific date.

Get Supported Symbols

Tool to retrieve the list of all available currency symbols and their corresponding names.

Get Time Series

Retrieves daily foreign exchange rates for a date range.

FRAMEWORKS

How to build Fixer io MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Fixer io MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Fixer io MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Fixer io MCP with Claude Code

Codex logo

Codex

Use Fixer io MCP with Codex

OpenClaw logo

OpenClaw

Use Fixer io MCP with OpenClaw

Hermes logo

Hermes

Use Fixer io MCP with Hermes

CLI logo

CLI

Use Fixer io MCP with CLI

Google ADK logo

Google ADK

Use Fixer io MCP with Google ADK

LangChain logo

LangChain

Use Fixer io MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Fixer io MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Fixer io MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Fixer io MCP with LlamaIndex

CrewAI logo

CrewAI

Use Fixer io MCP with CrewAI

FAQ

Frequently asked questions

With a standalone Fixer io MCP server, the agents and LLMs can only access a fixed set of Fixer io tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Fixer io and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Fixer io tools.

Yes, absolutely. You can configure which Fixer io scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Fixer io data and credentials are handled as safely as possible.

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya
Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave
Nirman Dave
CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu
Ryan Yu
Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola
Tomisin Jenrola
Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

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Jerome Leclanche
Co-Founder, Ingram Technologies