How to integrate Skyfire MCP with Codex

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Skyfire MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Skyfire logoSkyfire
Api Key

Skyfire is a payment infrastructure that lets AI agents transact and pay for services autonomously. It streamlines payments for AI applications, reducing manual overhead.

16 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Skyfire MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Skyfire with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Skyfire MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

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

The Skyfire MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Skyfire account. It provides structured and secure access to your autonomous payment and transaction infrastructure, so your agent can create tokens, pay for services, check balances, audit charges, and discover available AI-powered services on your behalf.

  • Autonomous service payments: Let your agent issue payment tokens and seamlessly pay for AI services or digital goods without manual intervention.
  • Wallet balance and charge auditing: Have your agent check buyer wallet balances before transactions and audit token charges to track exactly what was spent and when.
  • Discovery of AI and digital services: Enable your agent to browse, filter, and retrieve detailed info about available services using tags or seller agents, streamlining selection and integration.
  • Token management and automation: Allow your agent to create, manage, and charge Skyfire tokens (KYA, PAY, KYA+PAY), handling sophisticated payment flows programmatically.
  • Service details and compliance checks: Instruct your agent to fetch detailed service terms, API specs, and integration URLs—helping ensure compliance and smooth onboarding before making purchases.

Conclusion

You've successfully integrated Skyfire with Codex using Composio's MCP server. Now you can interact with Skyfire directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Skyfire operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Skyfire operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Charge Skyfire Token

Charge a buyer's token (seller-side operation).

Create Skyfire KYA+PAY Token

Issue a Skyfire KYA+PAY token (POST /api/v1/tokens with type=kya+pay).

Create Skyfire KYA Token

Issue a Skyfire KYA token (POST /api/v1/tokens with type=kya).

Create Skyfire PAY Token

Issue a Skyfire PAY token (POST /api/v1/tokens with type=pay).

Get All Service Tags

Fetch all service tags to discover filtering options.

Get Skyfire Buyer Wallet Balance

Retrieve buyer wallet balance.

Get Directory Service By ID

Tool to get full details for a specific service in the Skyfire directory by its ID.

Get Skyfire Service Details

Get full details for one service.

Get Services by Agent

Browse all services from one seller agent.

Get Services by Tags

Filter services by tags to find exactly what you need.

Get Skyfire Token Charges

Audit charges for a specific token.

Introspect Skyfire Token

Check if a token is still valid before calling a seller service.

List Agent Seller Services

List all services registered by the authenticated seller agent.

List Skyfire Buyer Tokens

Inspect buyer tokens for observability.

List Skyfire Directory Services

Browse Skyfire's service directory to obtain `sellerServiceId` for token creation.

Set Agent Source IP Addresses

Register IP addresses as sources for Agent requests (PUT /api/v1/agents/source-ips).

FAQ

Frequently asked questions

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

Yes, you can. Codex 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 Skyfire tools.

Yes, absolutely. You can configure which Skyfire 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 Skyfire data and credentials are handled as safely as possible.

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