Biconomy's Bundler API provides a hosted bundler service that enables easy submission of user operations (userops). Bundlers compile these userops into handle operations (handleops) and submit them on-chain via the EntryPoint contract, ensuring smooth transaction confirmations.
Our Bundlers are free to use on all chains without any prohibitive subscription pricing. No more need to count API calls you are making, or compute units you consume; send UserOps with full freedom!
Our bundlers only charge onchain since they earn on-chain from pre-verification gas buffer. This means whoever is the gas payer for that userOp, will be charged the gas buffer. So if you are sponsoring a transaction through a paymaster, you are charged for that. If a user is paying gas themselves, they will pay for the gas buffer. Additionally, we don’t charge you anything on top of this on-chain revenue.