Overview

What changed in each released version of the Molecule APIs, newest first, with migration notes for anything that breaks an existing integration.

Each page here tracks one API area. Entries are per released version, newest first, and cover only what a consumer can observe: contract changes, new and removed operations, and migrations.

Area	Page
Labs API	Labs API
Tokenization API	Tokenization API
x402 Gateway	x402 Gateway

Looking for how to migrate off an older shape? The API Changelog & Migration page organises the same breaking changes thematically, by what changed rather than by when. Use this section to answer "what shipped in a given version"; use that one to answer "how do I move off ipnftUid".

What appears here

Only consumer-visible change. Internal refactors, test changes, dependency bumps, infrastructure and CI work are deliberately absent — most releases contain nothing but those, and produce no entry at all. A version missing from these pages shipped nothing that affects your integration.

Entry format

## 1.2.3

_Released 2026-08-04_

### Breaking changes

#### <short title>

<what changed, in consumer terms>

**Migration:** <what to do, with a before/after example — or "No action required.">

### Added
### Removed

Conventions:

• The heading is the bare version, matching the git tag. Molecule release tags carry no v prefix — the tag for 1.0.14 is 1.0.14.

• Every breaking change carries either a migration note or an explicit "No action required."

• Link out to the reference page rather than restating it.