Biconomy
APIs
Biconomy Supertransaction API
The Biconomy Supertransaction API exposes the Modular Execution Environment (MEE) over a small REST surface — POST /v1/quote composes a multichain execution plan and returns the...
Biconomy Bundler API
Biconomy's open-source ERC-4337 TypeScript Bundler. Implements eth_sendUserOperation, eth_estimateUserOperationGas, eth_getUserOperationByHash, eth_getUserOperationReceipt, and ...
Biconomy Sponsorship Paymaster
ERC-4337 paymaster service that fronts gas on behalf of end users so dApps can offer gasless UX. Two modes — full sponsorship (developer pays gas, post-paid invoiced monthly) an...
Biconomy Nexus Smart Account
Nexus is Biconomy's ERC-7579 modular smart contract account, audited by CodeHawks-Cyfrin (Sept 2024), Spearbit (Oct/Nov 2024), Zenith (Mar 2025), and Pashov (Mar 2025), and pre-...
Biconomy Smart Sessions API
Smart Sessions is a delegated-execution framework layered on Nexus. A session key is granted a scoped set of policies (Sudo, Universal Action, Time Range, Usage Limit) that boun...
Biconomy AbstractJS SDK
AbstractJS (@biconomy/abstractjs) is Biconomy's TypeScript-first SDK with a Viem-inspired API. Wraps the Supertransaction API and Nexus smart account operations, exposing create...
Capabilities
Biconomy Supertransaction API — Execute
Biconomy MEE Supertransaction API — Execute. Submits a signed quote for multichain composable execution via MEE nodes.
Run with NaftikoBiconomy Supertransaction API — Orchestrator
Biconomy MEE Orchestrator lookup. Returns the orchestrator account address used to settle a supertransaction for a given owner across MEE-supported chains.
Run with NaftikoBiconomy Supertransaction API — Quote
Biconomy MEE Supertransaction API — Quote. Composes instructions and returns a MEE quote with signable payload(s) for the chosen account mode (eoa, smart-account, eoa-7702).
Run with Naftiko