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Codex

Codex is a blockchain data API that provides real-time and historical DeFi data across 80+ networks via GraphQL, including Celo. With access to over 70 million tokens and 700 million wallets, Codex delivers sub-second data for building token explorers, trading bots, portfolio trackers, and DeFi dashboards.

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GraphQL API

Codex exposes a single GraphQL endpoint with 73 query operations for fetching current and historical data. All requests are sent as HTTPS POST to https://graph.codex.io/graphql. Key query capabilities include:

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Real-Time Subscriptions

Codex supports 25 real-time data streams via WebSocket (wss://graph.codex.io/graphql), enabling live updates for:
  • Token price changes and trade events
  • New and updated DEX pairs
  • Wallet activity and balance changes
  • Launchpad and new token events

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Webhooks

Webhooks provide push-based notifications for on-chain events, delivering data to your server as events occur without requiring persistent WebSocket connections.

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SDK

Codex provides a TypeScript/JavaScript SDK that acts as a thin wrapper around the GraphQL API with predefined queries, mutations, and built-in subscription connection handling.
Alternatively, you can write custom GraphQL queries directly against the API for more flexibility.

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Getting Started

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1. Create an account

Sign up at dashboard.codex.io to create your Codex account.

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2. Get your API key

Copy your API key from the API Keys page in the dashboard.

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3. Make your first request

All requests require an Authorization header with your API key.

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4. Explore the API

Use the GraphQL Explorer to interactively build and test queries.

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Recipes & Guides

  • Token Discovery — Build token discovery pages with trending data, advanced filtering, and search
  • Price Charts — Render token charts with OHLCV data and real-time updates
  • Wallet Analytics — Analyze wallet performance and discover high-performing traders
  • Token Swap Events — Fetch and display token swaps with filtering, sorting, and real-time updates
  • Launchpad Monitoring — Build a launchpad dashboard with filtering, sorting, and real-time updates
  • Real-Time Price Tracking — Build a Node.js app that listens for token price changes in real time

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Resources