Glossary - Eco Docs

Term	Definition
Account abstraction (AA)	Smart-contract accounts that allow flexible transaction rules: batching, social recovery, gas abstraction, multi-sig.
Crowd Liquidity	Permissionless pool of stablecoin liquidity that solvers can flash-borrow from to fulfill larger intents than their reserves.
CCTP	Circle’s Cross-Chain Transfer Protocol. Native USDC movement via burn-and-mint with attestation. Used by Eco’s CCTP Prover.
Destination call	An onchain action included in an intent’s route, executed atomically with the transfer on the destination chain.
ERC-3009	`transferWithAuthorization`, USDC’s native gasless transfer standard. Single-tx, signature-based.
ERC-7683	Standard for cross-chain order protocols. Eco’s Portal implements both origin and destination settler interfaces.
Executor	Stateless contract that executes user-specified calls on the destination chain in isolation from the Portal’s storage.
Flash Intents	A configurable Routes mode that settles same-chain stablecoin orders atomically using the user’s own funds. Powered by `flashFulfill` via the Local Prover.
flashFulfill	Same-chain atomic operation that fulfills an intent using the vault’s own funds, no solver required. Enabled by the Local Prover. The mechanism behind Flash Intents.
Gateway	Circle Gateway, Circle’s USDC orchestration product. Eco routes deposits into Gateway via Gateway Fast Deposits.
Intent	A signed declaration of a desired outcome on a destination chain, fulfilled by a solver.
Orchestration mode	Intent fulfillment without a solver: the user’s vaulted funds route through underlying infrastructure at gas cost.
Permit3	Multi-chain token-permission protocol. One signature authorizes spending across multiple chains via Unbalanced Merkle Trees.
Portal	Eco’s main contract on each chain. Non-upgradable factory that handles intent publishing, fulfillment, and reward release.
Programmable Address	A deterministic CREATE2 address with pre-programmed actions. When funds arrive, the actions execute automatically.
Programmable Transaction	A single transaction with embedded decision logic, reads state, picks paths, executes optimally. Built on Sauce.
Prover	Source-chain contract that verifies an intent was fulfilled on the destination chain. User-selectable per intent.
Resource lock	A per-operation reservation of funds that releases on cryptographic proof. Eco’s vaults are resource locks.
Routes	Eco’s intent-based product for moving and swapping stablecoins across chains.
Sauce	The protocol that powers Programmable Transactions.
Settlement mode	Intent fulfillment by a solver fronting capital, the default execution path.
Solver	An independent operator that fulfills intents in exchange for the source-chain reward.
Storage proof	A cryptographic proof that specific data exists in a blockchain’s state, used by some provers for trust-minimized verification.
Supertransaction	A unit of execution in Programmable Transactions. One transaction, multiple contracts, dynamic decisions, atomic outcome.
Vault	Per-intent escrow contract. Deterministic, non-custodial, releases on proof.