vocabulary: Biconomy
version: '0.1'
description: >-
  Core vocabulary for the Biconomy account-abstraction platform. Captures the
  proper-noun terms a developer encounters across MEE, AbstractJS, Nexus, the
  Sponsorship Paymaster, the Bundler, and Smart Sessions.
sources:
  - https://docs.biconomy.io
  - https://github.com/bcnmy/nexus
  - https://github.com/bcnmy/abstractjs
  - https://github.com/bcnmy/bundler
terms:
  - term: MEE
    definition: Modular Execution Environment. Biconomy's hosted infrastructure that composes, signs, and settles
      multichain supertransactions.
    aliases:
      - Modular Execution Environment
  - term: Supertransaction
    definition: A multichain composable execution plan produced from one or more composeFlow instructions,
      signed once by the owner, and settled across chains by MEE nodes.
  - term: ComposeFlow
    definition: An ordered list of instructions submitted to /v1/quote describing what the supertransaction
      should do.
  - term: Instruction
    definition: A single composable building block (intent, build, build-raw, build-ccip) emitted into a
      supertransaction.
  - term: Nexus
    definition: Biconomy's ERC-7579 modular smart account implementation, audited and deployed across 20+ EVM
      chains.
  - term: AbstractJS
    definition: Biconomy's TypeScript SDK (NPM @biconomy/abstractjs) wrapping the Supertransaction API and
      Nexus smart-account operations with a Viem-shaped API.
  - term: Smart Session
    definition: Scoped, time-bounded permission grant on a Nexus smart account that lets an agent or
      automation execute a constrained set of transactions without re-prompting the owner.
  - term: Policy
    definition: A constraint attached to a smart session (sudo, universal-action, time-range, usage-limit)
      controlling what the session may do.
  - term: Bundler
    definition: ERC-4337 service that packages userOps into a single transaction and submits it to the
      EntryPoint contract. Biconomy operates a hosted TypeScript bundler on supported chains.
  - term: Paymaster
    definition: ERC-4337 contract that fronts gas for a userOp. Biconomy's Sponsorship Paymaster pays gas on
      behalf of the user and bills the developer post-paid.
  - term: Sponsorship
    definition: Gas-abstraction mode in which the developer (via dashboard policy) pays gas for users instead
      of requiring a feeToken.
  - term: EntryPoint
    definition: The ERC-4337 singleton contract through which all account-abstraction userOps are routed.
      Biconomy supports both v0.6.0 and v0.7.0 EntryPoints.
  - term: ERC-4337
    definition: Account abstraction via alternative mempool.
    url: https://eips.ethereum.org/EIPS/eip-4337
  - term: ERC-7579
    definition: Minimal modular smart account interface — the standard Nexus implements.
    url: https://eips.ethereum.org/EIPS/eip-7579
  - term: EIP-7702
    definition: Set-code transactions allowing an EOA to temporarily adopt smart-account behaviour for the
      duration of a transaction. Powers Biconomy's eoa-7702 mode.
    url: https://eips.ethereum.org/EIPS/eip-7702
  - term: Orchestrator account
    definition: The deterministic MEE-side account that holds intermediate state for a supertransaction across
      chains.
  - term: feeToken
    definition: Token the user spends to pay the MEE service fee. Omit to request a sponsored quote.
  - term: fundingToken
    definition: Token the user is willing to spend to fund execution. Required in eoa mode.
  - term: MEEScan
    definition: Biconomy's MEE explorer at https://meescan.biconomy.io for tracking supertransactions.