KEPLER
High-performance infrastructure layer purpose-built for the MultiversX ecosystem.
Welcome to KEPLER
We give developers the tools they need to launch and scale dApps without spending time managing nodes, renting oversized servers, or setting up backend services from scratch.
KEPLER provides reliable access to blockchain data through private APIs, event streams, and managed nodes, allowing developers to build faster and scale without worrying about infrastructure maintenance.
Kepler powers all major Project X products — from Saturn (real-time token and NFT event engine) and Atlas (wallet analytics) to the Project X Validator and internal DAO systems — and is now available for everyone.
What Kepler Does
Kepler abstracts the complexity of running and maintaining MultiversX observers, gateways, and indexers. It provides a single, unified interface for querying, subscribing, and delivering blockchain data in real time.
Private APIs — fast and reliable endpoints for accounts, transactions, tokens, and NFTs.
Custom APIs — tailored endpoints designed for specific business needs, optimized for each use case while maintaining performance and consistency.
ElasticSearch indexing — optimized data search and filtering at scale.
Event Streams — real-time push of token swaps, NFT sales, and transfers.
Dedicated nodes — private, high-availability gateways for production use cases.
Webhooks — secure and signed event delivery to your backend.
Why Builders Use Kepler
Developers choose Kepler when they need:
Speed and reliability beyond public gateways.
Simplified integration without running their own nodes.
Consistent data indexed and normalized for analytics or monitoring.
Event-driven infrastructure to react to on-chain activity instantly.
Scalability without additional infra or DevOps overhead.
By using Kepler, you can focus entirely on your application logic while Kepler manages uptime, redundancy, and data pipelines underneath.
How It Works
Kepler runs a distributed pool of observers and gateways that continuously sync blockchain data. Events are decoded, enriched, and indexed in real time, then exposed to builders.
Each project receives its own API key and isolated rate limits.
Requests are authenticated via header (Api-Key) or URL query param (Api-Key) and served at minimum latency.
Mainnet and Devnet Access
Kepler maintains separate environments:
Mainnet — for production integrations.
Devnet — for testing and development.
Both environments expose identical endpoints.
Plans and Access
Kepler offers three plans:
Developer — for individual builders testing or prototyping.
Business — for projects in active production.
Custom / Enterprise — for organizations needing dedicated nodes or SLAs.
All plans include private endpoints, access to Mainnet + Devnet, and full community support through the Project X channels.
Support and Community
The Project X team maintains an active builder community.
For help and enterprise onboarding DM the team on Discord or Telegram.
The Vision
KEPLER is part of a decentralized, community-owned infrastructure network.
Every plan contributes back to the Project X DAO, ensuring that the tools builders rely on are maintained by the very ecosystem they help grow.
Fast. Reliable. Community-powered. Welcome to Kepler.
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