v9.4.0

9.4.0 (2026-03-27)

Full Changelog: v9.3.0...v9.4.0

Features

• api: api update (43f868d)
• api: api update (136acd6)

Chores

• ci: skip lint on metadata-only changes (21b6a9d)
• internal: bump @modelcontextprotocol/sdk, @hono/node-server, and minimatch (cb296df)
• internal: fix MCP server TS errors that occur with required client options (78e6075)
• internal: make generated MCP servers compatible with Cloudflare worker environments (02fd3db)
• internal: support custom-instructions-path flag in MCP servers (54bc6f0)
• internal: support x-stainless-mcp-client-envs header in MCP servers (9b52734)
• internal: support x-stainless-mcp-client-permissions headers in MCP servers (262612e)
• internal: tweak CI branches (28d39dc)
• internal: update gitignore (7e3dec1)
• internal: update multipart form array serialization (4c22540)
• tests: bump steady to v0.19.4 (b17943d)
• tests: bump steady to v0.19.5 (724e159)
• tests: bump steady to v0.19.6 (d356e29)
• tests: bump steady to v0.19.7 (3729aa6)

Refactors

• tests: switch from prism to steady (3ce965c)

v9.3.0

9.3.0 (2026-03-10)

Full Changelog: v9.2.0...v9.3.0

Features

• api: api update (fa2b60a)

Bug Fixes

• api: remove invalid transform config (325973d)
• client: preserve URL params already embedded in path (0e6e60b)

Chores

• ci: skip uploading artifacts on stainless-internal branches (73749d6)
• internal: codegen related update (c3b5362)
• internal: update dependencies to address dependabot vulnerabilities (a4b3eac)
• mcp-server: improve instructions (3240242)

v9.2.0

9.2.0 (2026-02-26)

Full Changelog: v9.1.1...v9.2.0

Features

• mcp: add an option to disable code tool (41b93bf)

Chores

• internal: fix MCP Dockerfiles so they can be built without buildkit (4e01aa5)
• internal: fix MCP Dockerfiles so they can be built without buildkit (809edff)
• internal: make MCP code execution location configurable via a flag (a899886)
• internal: move stringifyQuery implementation to internal function (06e8759)

v9.1.1

9.1.1 (2026-02-23)

Full Changelog: v9.1.0...v9.1.1

Bug Fixes

• docs/contributing: correct pnpm link command (fbc6228)
• mcp: initialize SDK lazily to avoid failing the connection on init errors (b8baaa7)

Chores

• internal: cache fetch instruction calls in MCP server (3949456)
• internal: upgrade @modelcontextprotocol/sdk and hono (df73805)
• mcp: correctly update version in sync with sdk (d0c7741)
• update mock server docs (5934a67)

v9.1.0

9.1.0 (2026-02-17)

Full Changelog: v9.0.0...v9.1.0

Features

• mcp: add initial server instructions (41a62e7)

Bug Fixes

• client: avoid memory leak with abort signals (e6cbcb4)
• client: avoid removing abort listener too early (834599b)
• docs: fix mcp installation instructions for remote servers (2346e45)
• mcp: allow falling back for required env variables (e2285bf)

Chores

• client: do not parse responses with empty content-length (9168b0e)
• client: restructure abort controller binding (03776eb)
• internal/client: fix form-urlencoded requests (1ac688c)
• internal: add health check to MCP server when running in HTTP mode (c6b1999)
• internal: allow basic filtering of methods allowed for MCP code mode (c6921b7)
• internal: allow setting x-stainless-api-key header on mcp server requests (b54dd75)
• internal: always generate MCP server dockerfiles and upgrade associated dependencies (d786340)
• internal: avoid type checking errors with ts-reset (ec27092)
• internal: codegen related update (b3f5e09)
• internal: fix pagination internals not accepting option promises (6b75209)
• internal: improve layout of generated MCP server files (efb8e62)
• internal: refactor flag parsing for MCP servers and add debug flag (c3685d5)
• internal: support oauth authorization code flow for MCP servers (ed2565a)
• mcp: forward STAINLESS_API_KEY to docs search endpoint (e307e2e)
• mcp: up tsconfig lib version to es2022 (b96b21e)

v9.0.0

9.0.0 (2026-01-27)

Full Changelog: v8.2.1...v9.0.0

Features

• api: add per endpoint security (94b79a2)

Bug Fixes

• tests: skip broken date validation test (bd1b3dc)

Chores

• ci: upgrade actions/github-script (3e7b8f0)
• internal: codegen related update (60b9d57)
• internal: update lock file (fbf54dd)

v8.2.1

8.2.1 (2026-01-20)

Full Changelog: v8.2.0...v8.2.1

Chores

• internal: codegen related update (b715dbe)
• internal: codegen related update (55dcc71)
• internal: update actions/checkout version (f12ddde)
• internal: upgrade babel, qs, js-yaml (d7be1cd)
• mcp: add intent param to execute tool (167089e)
• mcp: pass intent param to execute handler (78d31fd)
• mcp: upgrade dependencies (d16fb7c)

v8.2.0

8.2.0 (2026-01-13)

Full Changelog: v8.1.1...v8.2.0

Features

• api: api update (07174ee)

Bug Fixes

• mcp: fix env parsing (da539c1)
• mcp: fix options parsing (50db4af)
• mcp: update code tool prompt (f3b178b)

Chores

• fix typo in descriptions (3ea6c6f)
• internal: codegen related update (2fc7cb3)
• internal: codegen related update (65d66db)
• internal: codegen related update (36d593e)
• internal: codegen related update (55094b0)

v8.1.1

8.1.1 (2026-01-06)

Full Changelog: v8.1.0...v8.1.1

Chores

• ownership: move from data to platform (again) (#639) (8f157ad)

v8.1.0

8.1.0 (2026-01-06)

Full Changelog: v8.0.0...v8.1.0

Features

• api: api update (8e97806)

Bug Fixes

• mcp: correct code tool api output types (1a412ec)

Chores

• break long lines in snippets into multiline (166f620)
• internal: codegen related update (d9eeb4b)

Documentation

• prominently feature MCP server setup in root SDK readmes (72c2bdd)