# Fixer CLI for AI Agents

```json
{
  "title": "Fixer CLI for AI Agents",
  "toolkit": "Fixer",
  "toolkit_slug": "fixer",
  "framework": "CLI",
  "framework_slug": "cli",
  "url": "https://composio.dev/toolkits/fixer/framework/cli",
  "markdown_url": "https://composio.dev/toolkits/fixer/framework/cli.md",
  "updated_at": "2026-05-06T08:11:58.223Z"
}
```

## Introduction

CLIs are eating MCPs. The industry is converging on the very same idea. MCPs for all their merit can be token hungry, slow, and unreliable for complex tool chaining. However, coding agents have become incredibly good at working with CLIs, and in fact they are far more comfortable working with CLI tools than MCP.
With Composio's Universal CLI, your coding agents can talk to over 1000+ SaaS applications. With Fixer, agents can get today's usd to eur exchange rate, show historical rates for gbp last week, list all supported currency symbols, and more — all without worrying about authentication.
This guide walks you through Composio Universal CLI and explains how you can connect it with coding agents like Claude Code, Codex, OpenCode, etc, for end-to-end Fixer automation.

## Also integrate Fixer with

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

## TL;DR

The idea behind building the universal CLI is to give agents a single command interface to interact with all your external applications. Here's what you'll get with it:
- Agent-friendly: Coding agents like Claude Code, Codex, and OpenCode can use CLI tools natively — no MCP setup required.
- Authentication handled: Connect once via OAuth or API Key, and all CLI commands work with your credentials automatically.
- Tool discovery: Search, inspect, and execute 20,000+ tools across 1000+ apps from one interface.
- Trigger support: Use triggers to listen for events across your apps, powered by real-time webhooks or polling under the hood.
- Type generation: Generate typed schemas for autocomplete and type safety in your projects.

## Connect Fixer to CLI

### Prerequisites
Install the Composio CLI, authenticate, and initialize your project:

```bash
# Install the Composio CLI
curl -fsSL https://composio.dev/install | bash

# Authenticate with Composio
composio login
```

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

The Fixer 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 account. It provides structured and secure access to real-time and historical foreign exchange data, so your agent can fetch current rates, check past currency values, and look up supported symbols with ease.
- Live exchange rate retrieval: Instantly get the most up-to-date currency conversion rates for any supported global currency pair.
- Historical currency data access: Ask your agent to pull exchange rates for specific dates in the past, making trend analysis and financial reporting effortless.
- Supported currency symbol lookup: Quickly retrieve the full list of available currency codes and names to validate inputs or display options for users.
- Multi-currency comparisons: Let your agent fetch and compare rates across multiple currencies at once to power financial dashboards or conversion tools.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `FIXER_GET_HISTORICAL_RATES` | 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. |
| `FIXER_GET_LATEST_RATES` | Get Latest Exchange 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. |
| `FIXER_GET_SUPPORTED_SYMBOLS` | 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. |

## Supported Triggers

None listed.

## Complete Code

None listed.

## Conclusion

- Try asking your coding agent to perform various Fixer operations
- Explore cross-app workflows by connecting more toolkits
- Set up triggers for real-time automation
- Use composio generate for typed schemas in your projects

## How to build Fixer MCP Agent with another framework

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

## Related Toolkits

- [Stripe](https://composio.dev/toolkits/stripe) - Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide.
- [Alpha vantage](https://composio.dev/toolkits/alpha_vantage) - Alpha Vantage is a financial data platform offering real-time and historical stock market APIs. Get instant, reliable access to equities, forex, and technical analysis data for smarter trading decisions.
- [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management.
- [Benzinga](https://composio.dev/toolkits/benzinga) - Benzinga provides real-time financial news and data APIs for market coverage. It helps you track breaking news and actionable market insights instantly.
- [Brex](https://composio.dev/toolkits/brex) - Brex provides corporate credit cards and spend management tailored for startups and tech businesses. It helps optimize company cash flow, streamline accounting, and accelerate business growth.
- [Chaser](https://composio.dev/toolkits/chaser) - Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow.
- [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time.
- [Coinbase](https://composio.dev/toolkits/coinbase) - Coinbase is a platform for buying, selling, and storing cryptocurrency. It makes exchanging and managing crypto simple and secure for everyone.
- [Coinranking](https://composio.dev/toolkits/coinranking) - Coinranking is a comprehensive cryptocurrency market data platform offering access to real-time coin prices, market caps, and historical data. Get accurate, up-to-date stats for thousands of digital assets in one place.
- [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations.
- [CurrencyScoop](https://composio.dev/toolkits/currencyscoop) - CurrencyScoop is a developer-friendly API for real-time and historical currency exchange rates. Easily access fiat and crypto data for smart, up-to-date financial applications.
- [Daffy](https://composio.dev/toolkits/daffy) - Daffy is a modern charitable giving platform with a donor-advised fund. Easily set aside funds, grow them tax-free, and donate to over 1.7 million U.S. charities.
- [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation.
- [Elorus](https://composio.dev/toolkits/elorus) - Elorus is an online invoicing and time-tracking software for freelancers and small businesses. Easily manage finances, bill clients, and track work in one place.
- [Eodhd apis](https://composio.dev/toolkits/eodhd_apis) - Eodhd apis delivers comprehensive financial data, including live and historical stock prices, via robust APIs. Easily access reliable, up-to-date market insights to power your apps, dashboards, and analytics.
- [Fidel api](https://composio.dev/toolkits/fidel_api) - Fidel api is a secure platform for linking payment cards to web and mobile apps. It enables real-time card transaction monitoring and event-based automation for businesses.
- [Finage](https://composio.dev/toolkits/finage) - Finage is a secure API platform delivering real-time and historical financial data for stocks, forex, crypto, indices, and commodities. It empowers developers and businesses to access, analyze, and act on market data instantly.
- [Finmei](https://composio.dev/toolkits/finmei) - Finmei is an invoicing tool that simplifies billing, invoice management, and expense tracking. Ideal for automating and organizing your business finances in one place.
- [Fixer io](https://composio.dev/toolkits/fixer_io) - Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free.
- [Flutterwave](https://composio.dev/toolkits/flutterwave) - Flutterwave is a global payments platform enabling businesses to accept and send payments across Africa and beyond. Its robust APIs simplify cross-border transactions and financial operations.

## Frequently Asked Questions

### What is the Composio Universal CLI?

The Composio Universal CLI is a single command-line interface that lets coding agents and developers interact with 1000+ SaaS applications. It handles authentication, tool discovery, action execution, and trigger setup — all from the terminal, without needing to configure MCP servers.

### Which coding agents work with the Composio CLI?

Any coding agent that can run shell commands works with the Composio CLI — including Claude Code, Codex, OpenCode, OpenClaw, and others. Once the CLI is installed, agents automatically discover and use the composio commands to interact with Fixer and other connected apps.

### How is the CLI different from using an MCP server for Fixer?

MCP servers require configuration and can be token-heavy for complex workflows. The CLI gives agents a direct, lightweight interface — no server setup needed. Agents simply call composio commands like any other shell tool. It's faster to set up, more reliable for multi-step tool chaining, and works natively with how coding agents already operate.

### How safe is my Fixer data when using the Composio CLI?

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 data and credentials are handled as safely as possible. You can also bring your own OAuth credentials for full control.

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