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@dependabot dependabot bot commented on behalf of github Jan 30, 2026

Bumps github.com/anthropics/anthropic-sdk-go from 1.19.0 to 1.20.0.

Release notes

Sourced from github.com/anthropics/anthropic-sdk-go's releases.

v1.20.0

1.20.0 (2026-01-29)

Full Changelog: v1.19.0...v1.20.0

Features

  • api: add support for Structured Outputs in the Messages API (10c3821)
  • api: migrate sending message format in output_config rather than output_format (f996db4)
  • client: add a convenient param.SetJSON helper (427514e)
  • encoder: support bracket encoding form-data object members (eaaeadf)

Bug Fixes

  • accumulator: revert to marshal accumulator on stop events (#563) (096a8a8)
  • client: retain streaming when user sets request body (6d073fe)
  • docs: add missing pointer prefix to api.md return types (23aaf6d)
  • mcp: correct code tool API endpoint (6c8a083)
  • rename param to avoid collision (6d1cf75)
  • streaming endpoints should pass through errors correctly (e584c87)
  • to-param: remove panics and add cases (#524) (f689816)

Chores

  • add float64 to valid types for RegisterFieldValidator (b6bec73)
  • ci: Add Claude Code GitHub Workflow (a151836)
  • client: improve example values (8af69b8)
  • client: mark claude-3-5-haiku as deprecated (dcac65c)
  • elide duplicate aliases (c8e2ee1)
  • internal: codegen related update (931c976)
  • internal: update actions/checkout version (3bd83ec)
  • internal: use different example values for some enums (f2d46b8)
Changelog

Sourced from github.com/anthropics/anthropic-sdk-go's changelog.

1.20.0 (2026-01-29)

Full Changelog: v1.19.0...v1.20.0

Features

  • api: add support for Structured Outputs in the Messages API (10c3821)
  • api: migrate sending message format in output_config rather than output_format (f996db4)
  • client: add a convenient param.SetJSON helper (427514e)
  • encoder: support bracket encoding form-data object members (eaaeadf)

Bug Fixes

  • accumulator: revert to marshal accumulator on stop events (#563) (096a8a8)
  • client: retain streaming when user sets request body (6d073fe)
  • docs: add missing pointer prefix to api.md return types (23aaf6d)
  • mcp: correct code tool API endpoint (6c8a083)
  • rename param to avoid collision (6d1cf75)
  • streaming endpoints should pass through errors correctly (e584c87)
  • to-param: remove panics and add cases (#524) (f689816)

Chores

  • add float64 to valid types for RegisterFieldValidator (b6bec73)
  • ci: Add Claude Code GitHub Workflow (a151836)
  • client: improve example values (8af69b8)
  • client: mark claude-3-5-haiku as deprecated (dcac65c)
  • elide duplicate aliases (c8e2ee1)
  • internal: codegen related update (931c976)
  • internal: update actions/checkout version (3bd83ec)
  • internal: use different example values for some enums (f2d46b8)
Commits
  • 09e977d release: 1.20.0
  • 8d73be9 feat(api): add support for Structured Outputs in the Messages API
  • 49c3652 chore(client): improve example values
  • 16c0bd8 fix(accumulator): revert to marshal accumulator on stop events (#563)
  • ac34e22 codegen metadata
  • 4d8e891 fix(to-param): remove panics and add cases (#524)
  • 4d5a823 feat(client): add a convenient param.SetJSON helper
  • c705a28 fix(docs): add missing pointer prefix to api.md return types
  • 8473bdd chore(internal): update actions/checkout version
  • 649a10a feat(api): migrate sending message format in output_config rather than output...
  • Additional commits viewable in compare view

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Bumps [github.com/anthropics/anthropic-sdk-go](https://github.com/anthropics/anthropic-sdk-go) from 1.19.0 to 1.20.0.
- [Release notes](https://github.com/anthropics/anthropic-sdk-go/releases)
- [Changelog](https://github.com/anthropics/anthropic-sdk-go/blob/main/CHANGELOG.md)
- [Commits](anthropics/anthropic-sdk-go@v1.19.0...v1.20.0)

---
updated-dependencies:
- dependency-name: github.com/anthropics/anthropic-sdk-go
  dependency-version: 1.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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@dependabot dependabot bot added dependencies Pull requests that update a dependency file go Pull requests that update go code labels Jan 30, 2026
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