Release Notes

Changelog for a transaction API built for engineers shipping against live chains.

Track protocol coverage, decoding accuracy, latency work, and API contract changes across Ethereum, Base, Arbitrum, Optimism, Polygon, zkSync, Linea, and World Polygon.

5 releases published4 release typesRSS available
v1.2.0FeatureShipped Mar 15, 2026

Latest Version

Protocol Fingerprint Expansion

3 changes in the newest release, focused on transaction classification fidelity, broader protocol coverage, and safer downstream automation.

  • Added 50 new protocol fingerprints across Morpho, Spark, Ethena, Ether.fi, Pendle, and Berachain bridge flows.
  • Improved action classification for complex multicall bundles so router-heavy swaps collapse into a single intent.
  • Introduced a fake token safety signal for contracts that mimic blue-chip symbols while redirecting approvals.

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All releases5Features1Fixes2Improvements1Breaking changes1

Mar 15, 2026

v1.2.0
FeatureLatest3 notes

Protocol Fingerprint Expansion

  • Added 50 new protocol fingerprints across Morpho, Spark, Ethena, Ether.fi, Pendle, and Berachain bridge flows.
  • Improved action classification for complex multicall bundles so router-heavy swaps collapse into a single intent.
  • Introduced a fake token safety signal for contracts that mimic blue-chip symbols while redirecting approvals.

Mar 3, 2026

v1.1.1
Fix3 notes

Trace Decoder Hotfix

  • Fixed a regression that emitted zero-value native transfer events for a subset of internal call traces.
  • Resolved missing ERC-4626 deposit and withdraw labels when vault interactions were routed through upgradeable proxies.
  • Patched cursor pagination drift on very large blocks with more than 10,000 indexed logs.

Feb 21, 2026

v1.1.0
Improvement3 notes

Latency and Labeling Improvements

  • Reduced p95 latency for `POST /transactions/explain` from 1.8s to 940ms on Ethereum mainnet.
  • Expanded entity labels for Coinbase, Circle CCTP, Across, LayerZero, and common Safe module contracts.
  • Improved Safe multisig intent grouping so batched execs now resolve into a single high-level action.

Feb 8, 2026

v1.0.3
Breaking3 notes

Cursor Pagination Contract Update

  • Replaced `page` and `limit` parameters on transaction history endpoints with opaque `cursor` tokens.
  • Response envelopes now return `next_cursor` and `prev_cursor` instead of `nextPage` metadata.
  • Decoded event payloads are included by default; clients that depended on `includeDecodedLogs=true` should switch to `event_mode`.

Jan 29, 2026

v1.0.2
Fix3 notes

Reorg and Pending State Fixes

  • Corrected duplicate webhook deliveries during short L2 reorg windows on Base and Arbitrum.
  • Fixed pending transaction enrichment for EIP-1559 replacements so superseded hashes are no longer marked successful.
  • Restored accurate gas-used estimates for transactions that create and self-destruct helper contracts in the same execution path.