# Fixer io

```json
{
  "name": "Fixer io",
  "slug": "fixer_io",
  "url": "https://composio.dev/toolkits/fixer_io",
  "markdown_url": "https://composio.dev/toolkits/fixer_io.md",
  "logo_url": "https://logos.composio.dev/api/fixer_io",
  "categories": [
    "finance & accounting"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-05-06T08:12:00.600Z"
}
```

![Fixer io logo](https://logos.composio.dev/api/fixer_io)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Fixer io MCP or direct API to fetch real-time rates, convert currencies, check historical forex data, and automate financial insights through natural language.

## Summary

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

## Categories

- finance & accounting

## Toolkit Details

- Tools: 6

## Images

- Logo: https://logos.composio.dev/api/fixer_io

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Fixer.io.
  - Setup:
    - Configure Api Key credentials for Fixer.io.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Convert 150 USD to EUR today
- Show exchange rate trends for GBP last month
- List all supported currency codes and names
- Get historical USD to JPY rate on Jan 1, 2023

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `FIXER_IO_CONVERT_CURRENCY` | Convert Currency | Tool to convert an amount from one currency to another. Use when you need current or historical exchange rates. Specify `date` for historical rates. |
| `FIXER_IO_GET_FLUCTUATION` | Get Currency Fluctuations | Tool to fetch exchange rate fluctuations between two dates. Use when you need day-to-day currency rate changes. |
| `FIXER_IO_GET_HISTORICAL_RATES` | Get Historical Rates | Tool to fetch historical exchange rates for a specific date. Use when you need past currency rates. |
| `FIXER_IO_GET_LATEST_RATES` | Get Latest Rates | Tool to retrieve the most recent exchange rates. Use when you need current currency conversion rates for all or specified currencies. |
| `FIXER_IO_GET_SUPPORTED_SYMBOLS` | Get Supported Symbols | Tool to retrieve the list of all available currency symbols and their corresponding names. Use when you need to fetch and display supported currency codes. |
| `FIXER_IO_GET_TIME_SERIES` | Get Time Series | Tool to retrieve daily exchange rates for a specified period. Use when you need historical FX rates between two dates (max 365 days). |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute Fixer io Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Fixer io actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Convert 100 USD to EUR using today\'s rates'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Convert 100 USD to EUR using today\'s rates'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK and Claude Agent SDK
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Create Tool Router Session

Initialize the Composio client and create a Tool Router session
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });

console.log("Creating Tool Router session...");
const { mcp } = await composio.create('your-user-id');
console.log(`Tool Router session created: ${mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Fixer io tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Convert 250 USD to EUR using today\'s rate')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText, stepCountIs } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: mcp.url,
    headers: { 'x-api-key': 'your-composio-api-key' }
  }
});

const tools = await client.tools();

const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{ role: 'user', content: 'Convert 250 USD to EUR using today\'s rate' }],
  stopWhen: stepCountIs( 5 )
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native Fixer io Integration

- Supports both Fixer io MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for retrieving, converting, and analyzing currency data

### 2. Managed Auth

- Effortless API Key management and secure storage
- Central place to manage, scope, and revoke Fixer io access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Fixer io
- Scoped, least privilege access to Fixer io resources
- Full audit trail of agent actions to support review and compliance

## Use Fixer io with any AI Agent Framework

Choose a framework you want to connect Fixer io with:

- [OpenAI Agents SDK](https://composio.dev/toolkits/fixer_io/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/fixer_io/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/fixer_io/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/fixer_io/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/fixer_io/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/fixer_io/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/fixer_io/framework/hermes-agent)
- [Google ADK](https://composio.dev/toolkits/fixer_io/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/fixer_io/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/fixer_io/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/fixer_io/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/fixer_io/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/fixer_io/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/fixer_io/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/fixer_io/framework/autogen)

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- [Fixer](https://composio.dev/toolkits/fixer) - Fixer is a currency data API offering real-time and historical exchange rates for 170 currencies. Instantly access accurate, up-to-date forex data for your applications and workflows.
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## Frequently Asked Questions

### Do I need my own developer credentials to use Fixer io with Composio?

Yes, Fixer io requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)