release: 0.77.0

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ${{ github.repository == 'stainless-sdks/anthropic-python' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -41,7 +41,7 @@ jobs:
       id-token: write
     runs-on: ${{ github.repository == 'stainless-sdks/anthropic-python' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -57,7 +57,7 @@ jobs:
       - name: Get GitHub OIDC Token
         if: github.repository == 'stainless-sdks/anthropic-python'
         id: github-oidc
-        uses: actions/github-script@v6
+        uses: actions/github-script@v8
         with:
           script: core.setOutput('github_token', await core.getIDToken());
 
@@ -75,7 +75,7 @@ jobs:
     runs-on: ${{ github.repository == 'stainless-sdks/anthropic-python' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5

.github/workflows/create-releases.yml

@@ -14,7 +14,7 @@ jobs:
     environment: production-release
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: stainless-api/trigger-release-please@v1
         id: release

.github/workflows/detect-breaking-changes.yml

@@ -15,7 +15,7 @@ jobs:
         run: |
           echo "FETCH_DEPTH=$(expr ${{ github.event.pull_request.commits }} + 1)" >> $GITHUB_ENV
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           # Ensure we can check out the pull request base in the script below.
           fetch-depth: ${{ env.FETCH_DEPTH }}

.github/workflows/publish-pypi.yml

@@ -11,7 +11,7 @@ jobs:
     environment: production-release
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5

.github/workflows/release-doctor.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.repository == 'anthropics/anthropic-sdk-python' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || startsWith(github.head_ref, 'release-please') || github.head_ref == 'next')
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check release environment
         run: |

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.76.0"
+  ".": "0.77.0"
 }

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 34
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-211390f4627177361550415b571a2b580b18c5882e3c2fc961b527e7b3474b0f.yml
-openapi_spec_hash: c93ef3808c58e233b01966ff154f31ce
-config_hash: 2438d3dc2e69cd23b9ed60c091eaffa7
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-f7bcdc13402c6129b30be620021a724945de44cffc6add091798f9cce33a1e32.yml
+openapi_spec_hash: e78807e31b9233abc50ccc00304bfa4d
+config_hash: 712e84f0cacb3436913f57da3d959b5c

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Changelog
 
+## 0.77.0 (2026-01-28)
+
+Full Changelog: [v0.76.0...v0.77.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.76.0...v0.77.0)
+
+### Features
+
+* **api:** migrate sending message format in output_config rather than output_format ([af405e4](https://github.com/anthropics/anthropic-sdk-python/commit/af405e473f7cf6091cb8e711264227b9b0508528))
+* use output_config for structured outputs ([82d669d](https://github.com/anthropics/anthropic-sdk-python/commit/82d669db652ed3d9aede61fd500fabb291b8f035))
+
+
+### Bug Fixes
+
+* **structured outputs:** avoid including beta header if `output_format` is missing ([#1121](https://github.com/anthropics/anthropic-sdk-python/issues/1121)) ([062077e](https://github.com/anthropics/anthropic-sdk-python/commit/062077e50d182719637403576f59761999b3b2f5))
+
+
+### Chores
+
+* **ci:** upgrade `actions/github-script` ([34df616](https://github.com/anthropics/anthropic-sdk-python/commit/34df6160ad386a7e8848e3435b22bd18bd726702))
+* **internal:** update `actions/checkout` version ([ea50de9](https://github.com/anthropics/anthropic-sdk-python/commit/ea50de95bd1e43b8f00a45ef472330a3c8b396c8))
+
 ## 0.76.0 (2026-01-13)
 
 Full Changelog: [v0.75.0...v0.76.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.75.0...v0.76.0)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.76.0"
+version = "0.77.0"
 description = "The official Python library for the anthropic API"
 dynamic = ["readme"]
 license = "MIT"

src/anthropic/_version.py

@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "anthropic"
-__version__ = "0.76.0"  # x-release-please-version
+__version__ = "0.77.0"  # x-release-please-version