@anthropic-ai/sdk

Full Changelog: sdk-v0.77.0...sdk-v0.78.0

Features

• api: Add top-level cache control (automatic caching) (1e2f83d)

Bug Fixes

• bedrock: eliminate race condition in AWS credential resolution (#901) (e5a101d)
• client: format batches test file (821e9bf)
• tests: fix issue in batches test (5f4ccf8)

Chores

• update mock server docs (25d337f)

Full Changelog: sdk-v0.76.0...sdk-v0.77.0

Features

• api: fix shared UserLocation and error code types (c84038f)

Bug Fixes

• add backward-compat namespace re-exports for UserLocation (#706) (b88834f)

Full Changelog: sdk-v0.75.0...sdk-v0.76.0

Features

• api: manual updates (25fe41c)

Full Changelog: sdk-v0.74.0...sdk-v0.75.0

Features

• api: Releasing claude-sonnet-4-6 (d75e1c0)

Bug Fixes

• api: fix spec errors (aa99e46)
• tests: fix erroneous speed tests (#699) (fcac1ca)

Chores

• internal/client: fix form-urlencoded requests (cba82b4)
• internal: avoid type checking errors with ts-reset (c723296)
• readme: change badge color to blue (3f7e788)

Full Changelog: sdk-v0.73.0...sdk-v0.74.0

Features

• api: enabling fast-mode in claude-opus-4-6 (e337981)

Full Changelog: sdk-v0.72.1...sdk-v0.73.0

Features

• api: Release Claude Opus 4.6, adaptive thinking, and other features (f741f92)

Bug Fixes

• client: avoid memory leak in abort signal listener (#895) (3bdd153)
• client: avoid memory leak with abort signals (53e47df)
• client: avoid removing abort listener too early (cd6e832)

Chores

• client: do not parse responses with empty content-length (2be2df9)
• client: restructure abort controller binding (0eeacb6)
• internal: fix pagination internals not accepting option promises (7c23a3f)
• remove claude-code-review workflow (#644) (ad09c76)

Full Changelog: sdk-v0.72.0...sdk-v0.72.1

Bug Fixes

• client: remove OutputFormat exports from index.ts (bf2cf08)

Full Changelog: sdk-v0.71.2...sdk-v0.72.0

Features

• api: add support for Structured Outputs in the Messages API (eeb7fab)
• api: migrate sending message format in output_config rather than output_format (99f4066)
• ci: add breaking change detection workflow (b181568)
• client: migrate structured output format (#625) (abcdddc)
• helpers: add MCP SDK helper functions (#610) (b6c3963)

Bug Fixes

• mcp: correct code tool API endpoint (4bd6ad6)
• mcp: return correct lines on typescript errors (c425959)

Chores

• break long lines in snippets into multiline (2c44e2d)
• ci: Add Claude Code GitHub Workflow (#612) (28a9a00)
• ci: fix multi package publishing (b9e3ab9)
• ci: upgrade actions/github-script (ff9dd44)
• internal: codegen related update (754de58)
• internal: codegen related update (cb411e4)
• internal: update actions/checkout version (c0057be)
• internal: upgrade babel, qs, js-yaml (494d9ed)
• internal: version bump (24ecc83)
• tests: remove extraneous header test (076a87c)

Documentation

• tool use documentation link (#873) (664cdd6)
• update import paths for beta helpers (#834) (d08fd40)
• update README with Claude branding (#611) (2a9a5f7)

Full Changelog: sdk-v0.71.1...sdk-v0.71.2

Bug Fixes

• streams: ensure errors are catchable (#856) (a480eaf)

Full Changelog: sdk-v0.71.0...sdk-v0.71.1

Bug Fixes

• parser: use correct naming for parsed text blocks (6472bcd)
• structured outputs: ensure parsed is not enumerable (860175f), closes #857

Chores

• add deprecation warnings for accessing .parsed (ae7a637)
• client: fix logger property type (e3e4d7c)
• internal: upgrade eslint (5fbe661)

Full Changelog: sdk-v0.70.1...sdk-v0.71.0

Features

• api: adds support for Claude Opus 4.5, Effort, Advance Tool Use Features, Autocompaction, and Computer Use v5 (f3a0dac)

Chores

• fix ci errors (8d96290)
• include publishConfig in all package.json files (4c72960)
• readme: fix example import (4e8983a)

Full Changelog: sdk-v0.70.0...sdk-v0.70.1

Bug Fixes

• structured outputs: use correct beta header (626662c)

Full Changelog: sdk-v0.69.0...sdk-v0.70.0

Features

• add Foundry SDK (40b0e87)

Full Changelog: sdk-v0.68.0...sdk-v0.69.0

Features

• api: add support for structured outputs beta (e6562d7)

Full Changelog: sdk-v0.67.1...sdk-v0.68.0

Features

• api: add ability to clear thinking in context management (d8707d3)

Full Changelog: sdk-v0.67.0...sdk-v0.67.1

Chores

• api: mark older sonnet models as deprecated (64ad72d)

Full Changelog: sdk-v0.66.0...sdk-v0.67.0

Features

• api: adding support for agent skills (0b7d97f)

Full Changelog: sdk-v0.65.0...sdk-v0.66.0

Features

• api: manual updates (7605d04)

Bug Fixes

• tool-runner: fix unhandled promise error for streams (4f6bc94)

Chores

• client: add context-management-2025-06-27 beta header (c6efc98)
• client: add model-context-window-exceeded-2025-08-26 beta header (06d2513)
• internal: use npm pack for build uploads (55c0ad7)
• jsdoc: fix @link annotations to refer only to parts of the package‘s public interface (62c1b5e)

Full Changelog: sdk-v0.64.0...sdk-v0.65.0

Features

• api: adds support for Claude Sonnet 4.5 and context management features (3f0b0fb)

Chores

• internal: codegen related update (724a2b1)
• internal: ignore .eslintcache (56a5f30)

Full Changelog: sdk-v0.63.1...sdk-v0.64.0

Features

• toolRunner: support custom headers (ac6a7a3)

Performance Improvements

• faster formatting (32d6185)

Chores

• internal: fix incremental formatting in some cases (2bdf8ee)
• internal: remove deprecated compilerOptions.baseUrl from tsconfig.json (2817c45)

Full Changelog: sdk-v0.63.0...sdk-v0.63.1

Bug Fixes

• helpers/zod: fix compat with zod 3 (a2952e1)

Chores

• do not install brew dependencies in ./scripts/bootstrap by default (115d81a)
• internal: update CI (dfa991a)
• package: lower zod peer dependency constraints (b40cfec)

Full Changelog: sdk-v0.62.0...sdk-v0.63.0

Features

• client: add support for toolRunner helpers (28f5837)

Chores

• internal: fix tests (003617d)
• vertex: update model string to valid example (7b77da0)

Full Changelog: sdk-v0.61.0...sdk-v0.62.0

Features

• api: adds support for Documents in tool results (5d971f9)
• api: adds support for web_fetch_20250910 tool (c663898)

Full Changelog: sdk-v0.60.0...sdk-v0.61.0

Features

• client: adds support for code-execution-2025-08-26 tool (91dd1bb)
• mcp: add code execution tool (2f9cfba)

Chores

• add package to package.json (3ee3632)
• client: qualify global Blob (e6bfd68)
• deps: update dependency @types/node to v20.17.58 (e3577f1)
• internal: formatting change (c8f4029)
• internal: update global Error reference (c82be0d)
• update CI script (92f4e99)

Documentation

• fix default timeout comment (#812) (a59964d)

Full Changelog: sdk-v0.59.0...sdk-v0.60.0

Features

• api: makes 1 hour TTL Cache Control generally available (b3c97bd)
• betas: add context-1m-2025-08-07 (a5f6db8)

Chores

• deprecate older claude-3-5 sonnet models (#488) (4fc9f76)
• internal: update comment in script (8157062)
• internal: update test skipping reason (4ea623a)
• update @stainless-api/prism-cli to v5.15.0 (43616bd)

Documentation

• readme: clarify beta feature usage (3196064)

Full Changelog: sdk-v0.58.0...sdk-v0.59.0

Features

• api: search result content blocks (f372c0d)

Chores

• internal: move publish config (5c1689e)

Full Changelog: sdk-v0.57.0...sdk-v0.58.0

Features

• api: add claude-opus-4-1-20250805 (08c61db)
• api: adds support for text_editor_20250728 tool (ca57d74)
• api: removed older deprecated models (352a5fd)
• update streaming error message to say 'required' not 'recommended' (ffac3e0)
• update streaming error message to say 'required' not 'recommended' (82a9ae5)
• vertex: support global endpoint (#449) (1c42030)

Bug Fixes

• internal/bootstrap: install dependencies for all packages (d3734f9)
• internal/bootstrap: only build main package (82428c7)
• internal/bootstrap: run build before installing other packages (301f504)
• internal/test: use jest directly (dab423b)

Chores

• client: add TextEditor_20250429 tool (bcb557d)
• internal: remove redundant imports config (555769d)
• internal: version bump (eb97e85)

Full Changelog: sdk-v0.56.0...sdk-v0.57.0

Features

• bedrock: better edge runtime support (#462) (5f8d1bb)
• client: add breaking change detection to CI (04332aa)

Bug Fixes

• bedrock: fix lint errors (aa40e9c)
• internal: fix type error for fromSSEResponse call (2405664)
• vertex: fix lint errors (7772f78)

Chores

• make some internal functions async (9cc6c55)
• ts: reorder package.json imports (e02b0a1)

Full Changelog: sdk-v0.55.1...sdk-v0.56.0

Features

• api: add support for Search Result Content Blocks (2910b28)
• tests: add fixture-based streaming tests and improve test coverage (00424bc)
• vertex: add AuthClient interface support for improved auth flexibility (b6f86e2)

Bug Fixes

• avoid console usage (e5ab01d)
• bedrock: fix bedrock logger (f183bc9)

Chores

• add docs to RequestOptions type (38cb967)
• api: update BetaCitationSearchResultLocation (760be6b)

Documentation

• model in examples (9385376)
• more beta updates (7d8b8ac)
• update model in readme (b1799f7)
• update models and non-beta batches (5305cdb)

Full Changelog: sdk-v0.55.0...sdk-v0.55.1

Bug Fixes

• ci: release-doctor — report correct token name (5fa2ebf)
• client: get fetchOptions type more reliably (60673ab)
• client: use proxy in bedrock when requesting credentials from AWS (8cfd227)

Chores

• ci: only run for pushes and fork pull requests (3d1c911)
• client: improve path param validation (1638f13)

Full Changelog: sdk-v0.54.0...sdk-v0.55.0

Features

• client: add support for endpoint-specific base URLs (9be46a8)

Bug Fixes

• client: explicitly copy fetch in withOptions (3a5909b)
• internal: resolve conflict (acfff05)
• publish script — handle NPM errors correctly (c4a6666)
• stream: avoid event listener leak (eb272af)

Chores

• ci: enable for pull requests (8505818)
• client: refactor imports (d5dff04)
• internal: add pure annotations, make base APIResource abstract (183d39c)
• readme: update badges (147f321)
• readme: use better example snippet for undocumented params (5beafd5)

Full Changelog: sdk-v0.53.0...sdk-v0.54.0

Features

• api: api update (e923aa1)
• api: api update (4877181)
• api: manual updates (99b0111)
• client: add support for fine-grained-tool-streaming-2025-05-14 (6b35dd9)

Bug Fixes

• client: deprecate BetaBase64PDFBlock in favor of BetaRequestDocumentBlock (7fa10db)
• client: improve error message in parsing JSON (7c0cb84)
• internal: revert unintentional changes (28dccec)

Chores

• avoid type error in certain environments (48c1a41)
• tests: add testing for invalid json raising (52260c1)

Full Changelog: sdk-v0.52.0...sdk-v0.53.0

Features

• client: add support for new text_editor_20250429 tool (e49ebfb)

Bug Fixes

• client: correctly track input from server_tool_use input deltas (4a14253)
• client: fix link to streaming responses docs (2ad98be)
• compat with more runtimes (3c70ae3)

Chores

• adjust eslint.config.mjs ignore pattern (ab404cf)
• ci: fix release workflow (7e2e566)
• deps: bump eslint-plugin-prettier (8f973c4)
• docs: use top-level-await in example snippets (b4a60ee)
• examples: show how to pass an authorization token to an MCP server (340461b)
• improve publish-npm script --latest tag logic (4a7bdc0)
• internal: codegen related update (345af47)
• internal: codegen related update (6d924ef)
• internal: fix readablestream types in node 20 (b68745b)
• internal: fix release workflows (a8da56f)

Documentation

• pagination: improve naming (8e62803)

Full Changelog: sdk-v0.51.0...sdk-v0.52.0

Features

• api: add claude 4 models, files API, code execution tool, MCP connector and more (769f9da)

Chores

• internal: codegen related update (2ed236d)
• internal: version bump (8ebaf61)

Full Changelog: sdk-v0.50.4...sdk-v0.51.0

Features

• bedrock: support skipAuth on Bedrock client to bypass local auth requirements (b661c5f)

Bug Fixes

• bedrock: support model names with slashes (cb5fa8a)

Chores

• package: remove engines (f0378ec)

Full Changelog: sdk-v0.50.3...sdk-v0.50.4

Bug Fixes

• stream: correctly accumulate usage (c55b4f0)

Full Changelog: sdk-v0.50.2...sdk-v0.50.3

Bug Fixes

• client: always overwrite when merging headers (657912a)
• client: always overwrite when merging headers (bf70c9f)

Full Changelog: sdk-v0.50.1...sdk-v0.50.2

Bug Fixes

• ci: bump publish workflow to node 20 (306a081)

Chores

• internal: minor sync (d89476f)
• sync repo (508e385)

Documentation

• update readme (ef0c60a)

Full Changelog: sdk-v0.50.0...sdk-v0.50.1

Full Changelog: sdk-v0.40.1...sdk-v0.41.0

Features

• api: adds web search capabilities to the Claude API (fae7e52)

Chores

• ci: bump node version for release workflows (3502747)

Documentation

• add examples to tsdocs (19a9285)
• readme: fix typo (735574e)

Full Changelog: sdk-v0.40.0...sdk-v0.40.1

Chores

• bedrock: bump @aws-sdk dependencies (6440e1d)

Full Changelog: sdk-v0.39.0...sdk-v0.40.0

Features

• add SKIP_BREW env var to ./scripts/bootstrap (#710) (1b8376a)
• api: extract ContentBlockDelta events into their own schemas (#732) (fd0ec83)
• api: manual updates (39b64c9)
• api: manual updates (771e05b)
• api: manual updates (ca6dbd6)
• api: manual updates (14df8cc)
• client: accept RFC6838 JSON content types (#713) (fc32787)
• mcp: allow opt-in mcp resources and endpoints (#720) (9f3a54e)

Bug Fixes

• api: improve type resolution when importing as a package (#738) (8992ed4)
• avoid type error in certain environments (#723) (208fdaf)
• client: deduplicate stop reason type (#726) (2d7cef1)
• client: send X-Stainless-Timeout in seconds (#733) (cae4f77)
• client: send all configured auth headers (#742) (86708b4)
• exports: ensure resource imports don't require /index (#717) (56b2a80)
• internal: work around https://github.com/vercel/next.js/issues/76881 (#727) (36ea0ef)
• mcp: remove unused tools.ts (#740) (26793e7)
• remove duplicate exports (2df4cdd)

Chores

• add hash of OpenAPI spec/config inputs to .stats.yml (#725) (271be7d)
• bedrock: bump @aws-sdk/credential-providers (a4d88d7)
• ci: add timeout thresholds for CI jobs (1080c70)
• ci: only use depot for staging repos (359dafa)
• ci: run on more branches and use depot runners (3331315)
• client: minor internal fixes (fcf3e35)
• internal: add aliases for Record and Array (#735) (e0a4bec)
• internal: add back release workflow (68d54e5)
• internal: codegen related update (#737) (2a368bb)
• internal: fix lint (2cf3641)
• internal: import ordering changes (#708) (a5680e1)
• internal: improve index signature formatting (#739) (627c5fa)
• internal: reduce CI branch coverage (6ed0bd6)
• internal: remove CI condition (#730) (cc31518)
• internal: remove extra empty newlines (#716) (4d3c024)
• internal: update config (#728) (ababd80)
• internal: upload builds and expand CI branch coverage (#744) (0b7432a)
• tests: improve enum examples (#743) (c1c93a7)

Full Changelog: sdk-v0.38.0...sdk-v0.39.0

Features

• api: add support for disabling tool calls (#701) (1602b51)

Documentation

• update URLs from stainlessapi.com to stainless.com (#699) (05e33b7)

Full Changelog: sdk-v0.37.0...sdk-v0.38.0

Features

• api: add URL source blocks for images and PDFs (#698) (16e7336)

Chores

• internal: update spec (#692) (142f221)

Documentation

• add thinking examples (db6f761)

Full Changelog: sdk-v0.36.3...sdk-v0.37.0

Features

• api: add claude-3.7 + support for thinking (ffab311)
• client: send X-Stainless-Timeout header (#679) (1172430)
• pagination: avoid fetching when has_more: false (#680) (d4df248)

Bug Fixes

• client: fix export map for index exports (#684) (56d9c7a)
• correctly decode multi-byte characters over multiple chunks (#681) (e369e3d)
• optimize sse chunk reading off-by-one error (#686) (53669af)

Chores

• api: update openapi spec url (#678) (84401b1)
• internal: add missing return type annotation (#685) (a8862b9)
• internal: fix devcontainers setup (#689) (8665946)
• internal: reorder model constants (#676) (52a2a11)
• internal: update models used in tests (52a2a11)

Full Changelog: sdk-v0.36.2...sdk-v0.36.3

Bug Fixes

• streaming: accumulate citations (#675) (522118f)

Chores

• docs: updates (#673) (751ecd0)

Full Changelog: sdk-v0.36.1...sdk-v0.36.2

Bug Fixes

• bedrock: update streaming util import (255c059)

Full Changelog: sdk-v0.34.0...sdk-v0.35.0

Features

• add beta message streaming helpers (#655) (d7b5af1)
• stream: add .withResponse() (#654) (b54477f)
• streaming: add .request_id getter (4572478)

Bug Fixes

• docs: correct results return type (#657) (4e6d031)
• examples: add token counting example (2498e2e)
• send correct Accept header for certain endpoints (#651) (17ffaeb)
• vertex: add beta.messages.countTokens method (51d3f23)

Chores

• deprecate more models (661f5f9)
• internal: add test (#660) (3ec7d1a)
• internal: temporary revert commit (#643) (43dd43c)
• internal: update examples (#649) (036a239)
• types: add | undefined to client options properties (#656) (d642298)

Documentation

• readme: fix misplaced period (#650) (8754744)
• readme: fix Request IDs example (#659) (6d3162d)

0.33.1 (2026-08-19)

Full Changelog: bedrock-sdk-v0.33.0...bedrock-sdk-v0.33.1

Chores

• internal: use a single pnpm workspace lockfile (#359) (3c32145)

0.33.0 (2026-08-19)

Full Changelog: bedrock-sdk-v0.32.4...bedrock-sdk-v0.33.0

Features

• api: Files and Skills APIs are now GA; add computer use and browser use toolsets (ab41aa3)

Full Changelog: sdk-v0.32.0...sdk-v0.32.1

Bug Fixes

• bedrock: don't mutate request body inputs (f83b535)
• vertex: don't mutate request body inputs (e9a82e5)

Full Changelog: sdk-v0.31.0...sdk-v0.32.0

Features

• api: add new haiku model (#587) (983b13c)

Bug Fixes

• don't require deno to run build-deno (#586) (0e431d6)
• types: add missing token-counting-2024-11-01 (#583) (13d629c)

Chores

• remove unused build-deno condition (#585) (491e8fe)

Full Changelog: sdk-v0.30.1...sdk-v0.31.0

Features

• api: add message token counting & PDFs support (#582) (b593837)

Bug Fixes

• countTokens: correctly set beta header (1680757)
• internal: support pnpm git installs (#579) (86bb102)
• types: add missing token-counting-2024-11-01 (aff1546)

Reverts

• disable isolatedModules and change imports (#575) (2c3b176)

Chores

• internal: update spec version (#571) (5760012)

Documentation

• readme: minor typo fixes (#577) (8412854)

Refactors

• enable isolatedModules and change imports (#573) (9068b4b)
• use type imports for type-only imports (#580) (2c8a337)

Full Changelog: sdk-v0.30.0...sdk-v0.30.1

Bug Fixes

• bedrock: correct messages beta handling (9b57586)
• vertex: correct messages beta handling (26f21ee)

Chores

• internal: bumps eslint and related dependencies (#570) (0b3ebb0)

Full Changelog: sdk-v0.29.2...sdk-v0.30.0

Features

• api: add new model and computer-use-2024-10-22 beta (6981d89)
• bedrock: add beta.messages.create() method (6317592)
• vertex: add beta.messages.create() (22cfdba)

Bug Fixes

• client: respect x-stainless-retry-count default headers (#562) (274573f)

Chores

• api: add title (#564) (a8b7544)
• internal: update spec (#566) (5b998ea)

Full Changelog: sdk-v0.29.1...sdk-v0.29.2

Bug Fixes

• types: remove misleading betas TypedDict property for the Batch API (#559) (4de5d0a)

Full Changelog: sdk-v0.29.0...sdk-v0.29.1

Bug Fixes

• beta: merge betas param with the default value (#556) (5520bbc)

Chores

• internal: update spec URL (#554) (1fb6448)