Release Notes

2026-09-01 — SDK v0.8.0 — DON Configuration, Structured Conflict Errors

Versions

What's new

DON configuration: configure event verification for your organisation's DON as one atomic unit (tenant ID, signature threshold, signer set) with the new WithDONConfig option. See SDK Configuration Options.
Structured conflict errors: HTTP 409 responses now carry machine-readable codes, mapped by the SDK to sentinel errors that work with errors.Is. See Error Handling.
More precise verification failures: verification now distinguishes a workflow-owner mismatch from an insufficient signature count, instead of returning a generic error. See Event Verification.
Optional wallet configuration: the configuration field on wallet creation is now optional.
DON signer rotation completed: the default signer set now counts 10 production signers.

Versions

What's new since initial release

Draft operations: create unsigned operations and finalize them later with an external signer. Enables deferred-signing workflows: MPC (Fireblocks, Privy, AWS KMS with approval), human approval gates, preview-before-sign, and cancellation before execution. See Draft Operations.
Chain queries: submit asynchronous, DON-backed, verifiable EVM eth_call reads and receive OCR-signed results with resolved block metadata. See Chain Queries.
Multi-event finality: operations now report progressive on-chain confirmations (confirmed_latest → confirmed_safe → confirmed) as the block matures through finality stages. See Multi-Event Finality.
RSA local signer: in-memory RSA signing for development and testing, alongside the existing ECDSA local signer.
Structured error codes: the REST API now returns machine-readable ApplicationError with type and code fields (e.g. OPERATION_NOT_FINALIZABLE, IDEMPOTENCY_KEY_MISMATCH).

Chainlink CRE Connect is now available as a private beta.

Versions

Capabilities

Verifiable on-chain events: subscribe to contract events on supported networks; every event is signed by the Chainlink DON and verifiable end-to-end via client.Events.Verify (and client.Events.VerifyOperationStatus for operation lifecycle events).
Gas-less, account-abstracted operations: sign one EIP-712 payload; CRE Connect executes one or more EVM transactions atomically through your Smart Account, with no gas, nonce, or relayer management on your side.
Extensions: typed Go modules layered on the core SDK. Available at launch: DTA.

Signer integrations

Local ECDSA, AWS KMS, HashiCorp Vault, Fireblocks, Privy, and a documented custom signer interface.

Supported networks

See Supported Networks.