v10.0.0-beta.1

10.0.0-beta.1 (2026-10-29)

⚠ BREAKING CHANGES

• server: handlers on a pinned or supported_versions-restricted server now receive that release instead of the packaged 3.3-beta.0, and resolve_requested_adcp_version(params) inside them returns it.
• types: AdCPBaseModel keeps unknown keys (extra='allow') instead of dropping them. A stray keyword argument on an open model goes to the wire; set ADCP_STRICT_VALIDATION=1 in tests to find them. Closed schema objects keep refusing unknown keys.
• codegen: model_dump() and model_dump_json() leave an unset schema-optional default off. A model built in Python no longer carries sandbox: false, timezone: "inventory_local", assignment_limit: 50 and the other schema defaults unless the caller set them; the attribute still reads the default. Pass exclude_unset=False for the SDK 9 output. Code that relied on a default reaching the peer must set it. model_dump_as_received() is deprecated. Generated root models dump with exclude_none=True.
• types: a received null on a null-admitting property is written back as null by model_dump(). Model(x=None), model.x = None and model_copy(update={"x": None}) leave x unset: it is omitted from the dump, from model_dump(exclude_unset=True), and from model_fields_set, so a root required-group rule no longer counts it as supplied. A None inside a dict passed to model_validate is a wire null. canonical_creative.Format refuses a JSON null on its optional properties, as its schema does.
• types: model_dump() and model_dump_json() write wire names for aliased fields. Code that read a dump by the Python name (dump["pass_"], dump["field_schema"]) must read the wire name (dump["pass"], dump["$schema"]); pass by_alias=False for the SDK 9 output.

Features

• codegen: mark wire-required fields, and leave an unset schema default off the dump (#1683) (d0ea184)
• types: dump wire names by default (#1679) (9c9b1f8)
• types: let the schema decide which unknown keys a model keeps (#1687) (69ccd70)
• types: re-emit a received null, and read a None keyword argument as unset (#1681) (c048a8c)

Bug Fixes

• server: let a server's version pin set the release its handlers run on (#1689) (24d40e0)