release: 0.51.0

[stainless-app]

Automated Release PR

0.51.0 (2026-05-13)

Full Changelog: v0.50.0...v0.51.0

Features

• api: api update (842efa8)
• api: api update (6fe066e)
• api: api update (eac4b8f)
• api: api update (66aa7dc)
• internal/types: support eagerly validating pydantic iterators (3e9c5ac)
• support setting headers via env (38de0ee)

Bug Fixes

• client: add missing f-string prefix in file type error message (fe74792)
• use correct field name format for multipart file arrays (361fcd6)

Chores

• internal: reformat pyproject.toml (8802c53)

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🔗 Stainless website
📚 Read the docs
🙋 Reach out for help or questions

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Note

Medium Risk
Touches request construction/serialization paths (custom headers env parsing, multipart file field naming, and Pydantic v2 iterable validation), which could subtly change API request shapes or runtime validation behavior. Changes are well-scoped and covered by updated tests, but warrant review for backwards-compatibility.

Overview
Releases v0.51.0 (version bumps in pyproject.toml/_version.py, manifest/stats, and changelog) and pins GitHub Actions (actions/checkout, actions/github-script) to specific SHAs.

Adds support for injecting default request headers via MIXEDBREAD_CUSTOM_HEADERS, and fixes multipart file array field naming by making extract_files(..., array_format=...) control whether keys use [], indices, or bare repeated names.

Improves Pydantic v2 behavior by introducing EagerIterable to eagerly consume/validate iterables (avoiding iterator-consumption bugs), adds compatibility handling for __pydantic_extra__, and updates generated Store APIs/types (e.g., new metadata_facets limits, new agentic config fields, summary on audio chunks) while removing the generated SearchFilter type in favor of inline filter input shapes; tests and docs are updated accordingly.

^{Reviewed by Cursor Bugbot for commit 81fe499. Bugbot is set up for automated code reviews on this repo. Configure here.}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

pip install 'https://pkg.stainless.com/s/mixedbread-python/842efa840415d1a6d8f754f9c1594655283858c9/mixedbread-0.50.0-py3-none-any.whl'

Expires at: Fri, 12 Jun 2026 13:24:05 GMT
Updated at: Wed, 13 May 2026 13:24:05 GMT

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