1.6.0 (2026-09-15) Full Changelog: v1.5.0...v1.6.0 Features api: add auto mode tool permissions for Managed Agents (909d92f) api: add compaction parameter and signed compaction blocks (beta) (8689179) api: add enum types for workspace data-residency geo fields (3dc6dbf) api: add thinking_mismatch_allowed entries to input_transformations (beta) (14d1792) api: add url_sources to the web fetch tool (…
1.5.0 (2026-09-10) Full Changelog: v1.4.0...v1.5.0 Features api: add auto mode tool permissions for Managed Agents (62aa21b) api: add content_too_large web_fetch tool error code (4b5dec6) api: add the user-profiles-2026-09-04 beta value and external_user_details to user profiles (5f881a5) api: support mounting public GitHub repositories without an authorization_token in Managed Agents sessions (28…
1.4.0 (2026-09-04) Full Changelog: v1.3.0...v1.4.0 Features api: add Claude Tag category and user breakdowns to usage reports (9fce1e4) api: add named types for organization compliance settings state (1de1957) api: add support for sending a workspace ID on more endpoints (d1d2c01) Bug Fixes client: raise a clear error when an httpx object is passed instead of an httpx2 one (9447099) repair custom-…
1.3.0 (2026-09-01) Full Changelog: v1.2.0...v1.3.0 Features api: beta user profiles: add external_user_onboarded_at, remove relationship in favor of access_type (74080c3) api: manual updates (1dc3ce0) api: organization compliance settings, user-profile order_by, memory-store and toolset schema updates (429e719) Bug Fixes aws: resolve base_url from aws_region under skip_auth and with_options (#564)…
1.2.0 (2026-08-27) Full Changelog: v1.1.0...v1.2.0 Features api: beta files/skills namespaces use GA shapes; drop dated beta header pins (9df4565) Bug Fixes aws,bedrock: sign raw request bytes so binary file uploads work (#531) (f50e910) ci: resolve assignment aliases in detect-breaking-changes (f2c4925) sessions: make event accumulator forward-compatible with new event types (#533) (cbbaf6e) tool…
1.1.0 (2026-08-26) Full Changelog: v1.0.0...v1.1.0 Features api: add updates thinking display mode (beta) (eb4a73f) api: add missing anthropic-beta values (dbebd15) api: add support for Organization API endpoints (5a5b8fc) Bug Fixes docs: correct link for long requests error (#1884) (4474f31), closes #1883 tools: keep the tool runner going on pause_turn (#343) (ab1ec60) Chores docs: clarify skill…
1.0.0 (2026-08-20) Full Changelog: v0.125.0...v1.0.0 ⚠ BREAKING CHANGES client: upgrade to httpx2 and some minor breaking changes. See MIGRATION.md for details Features client: upgrade to httpx2 and some minor breaking changes. See MIGRATION.md for details (33e2967) Bug Fixes beta: stop warning about output_format= on the parse/stream/tool_runner helpers (59bf261) Chores streaming: restore the ori…
0.125.0 (2026-08-19) Full Changelog: v0.124.0...v0.125.0 Features api: managed agents web search config and self hosted sandbox memory (b75afd6)
0.124.0 (2026-08-19) Full Changelog: v0.123.0...v0.124.0 Features api: Files and Skills APIs are now GA; add computer use and browser use toolsets (9a09e84)
0.123.0 (2026-08-18) Full Changelog: v0.122.0...v0.123.0 Features api: additions to files and memory stores (09ce187) api: updates to skill, files, and user profiles (c6cbffd) client: add helpers for accessing the workspace ID in response headers (f79882b) Bug Fixes api: remove unsupported mid_conv_system content block (6f15b8d) client: compute platform headers without spawning a subprocess (baca9…
0.122.0 (2026-08-13) Full Changelog: v0.121.0...v0.122.0 Features api: add output_behavior to dream creation (create a new memory store or update the input store in place) (852c4bb) Bug Fixes bedrock,aws: run SigV4 signing off the event loop in async clients (#334) (2bae6c8) bedrock: expose beta.messages.parse, stream and tool_runner (#366) (6eca7bb) client: add models (52e9d94) client: keep token…
0.121.0 (2026-08-07) Full Changelog: v0.120.2...v0.121.0 Features api: add mid-conversation-tool-changes-2026-07-01 beta (c7d1531) api: add support for session budgets, advisor tool, pinned inference location and skills auto-loading from GitHub (193bae0) Chores api: remove retired Claude Opus 4.1 models (5352a33) docs: small updates to descriptions (b8d4176) docs: updates to a few documentation st…
0.120.2 (2026-07-28) Full Changelog: v0.120.1...v0.120.2 Bug Fixes mcp: support mcp sdk v2 alongside v1 (#300) (177f88c)
0.120.1 (2026-07-28) Full Changelog: v0.120.0...v0.120.1 Bug Fixes mcp: pin mcp extra to <2 (#1783) (fb66371)
0.120.0 (2026-07-24) Full Changelog: v0.119.0...v0.120.0 Features api: add claude-opus-5 model (bf4e31c) api: add tool addition/removal blocks and tool_change events (bf4e31c) api: expand client-side fallback credit token types and add server-side fallbacks default option (bf4e31c)
0.119.0 (2026-07-23) Full Changelog: v0.118.0...v0.119.0 Features api: add new stop reason 'model_context_window_exceeded' (d983cde) Bug Fixes tools: handle binary files in agent toolset read/edit (#283) (417b76b)
0.118.0 (2026-07-22) Full Changelog: v0.117.1...v0.118.0 Features api: add support for Managed Agents model effort, initial session events, and threads delta streaming (712bc6f)
0.117.1 (2026-07-21) Full Changelog: v0.117.0...v0.117.1 Bug Fixes aws: handle credentials correctly when using AnthropicAWS.copy() (85d3881) Chores api: add support for new refusal category (d1dea0b) client: docs updates (b14f94c) deps: bump http-snapshot to 0.1.9 (#275) (434b657) deps: pin httpx_aiohttp major version (#271) (924487f) docs: small updates (c48db8b) docs: small updates (755c06c) in…
0.117.0 (2026-07-16) Full Changelog: v0.116.0...v0.117.0 Features api: add support for dreaming (642eee7) api: add support for MCP Tunnels (d716df6) Bug Fixes credentials: keep credential material out of traceback frame locals via SecretStr (aa93a4d) Chores docs: small updates to field descriptions (75d8dcc) docs: update model example (a57e30a) docs: updates to descriptions and examples (e1535b6)
0.116.0 (2026-07-02) Full Changelog: v0.115.1...v0.116.0 Features api: add agent-memory-2026-07-22 beta header (e181d5c)
0.115.1 (2026-07-01) Full Changelog: v0.115.0...v0.115.1 Chores api: remove some nonfunctional types from the SDKs (5e7c431)
0.115.0 (2026-06-30) Full Changelog: v0.114.0...v0.115.0 Features api: add support for Managed Agents event delta streaming, agent overrides, reverse pagination, vault credential injection scoping, and agent and deployment webhook events (8c23f7e)
0.114.0 (2026-06-30) Full Changelog: v0.113.0...v0.114.0 Features api: add support for claude-sonnet-5 (b893033) Bug Fixes agent_toolset: allow absolute paths that resolve inside workdir (#121) (0105529)
0.113.0 (2026-06-29) Full Changelog: v0.112.0...v0.113.0 Features api: add support for 20260318 web fetch and support tools (88dbfb1) Bug Fixes async count_tokens missing output_format/output_config merge block (#162) (122c958) Chores api: accept user profile ID's when counting tokens (0b4d17a) docs: updates to descriptions and example values (f3ab694)
0.112.0 (2026-06-24) Full Changelog: v0.111.0...v0.112.0 Features client: add support for system.message streaming events (2450d59) Bug Fixes memory tool: create parent directories with the correct permissions (#135) (f2fc2a9) Chores api: add support for new refusal category (5ab533e) api: add support for sending User Profile ID in request headers (83319be)
0.111.0 (2026-06-18) Full Changelog: v0.110.0...v0.111.0 Features helpers: tag refusal-fallback middleware requests with fallback-refusal-middleware (#96) (2f8ac78)
0.110.0 (2026-06-18) Full Changelog: v0.109.2...v0.110.0 Features api: add support for new code_execution_20260120 tool (5e23212) Bug Fixes append x-stainless-helper across header merges instead of clobbering (#105) (922558e) bedrock: preserve stream event type (#1682) (b27e343) helpers: single source of truth for x-stainless-helper key + closed value vocabulary (#95) (e6f7a56)
0.109.2 (2026-06-15) Full Changelog: v0.109.1...v0.109.2 Chores api: remove retired models from API and SDKs (d4bcfcc)
0.109.1 (2026-06-09) Full Changelog: v0.109.0...v0.109.1 Bug Fixes api: add frontier_llm refusal category (d3a806b)
0.109.0 (2026-06-09) Full Changelog: v0.108.0...v0.109.0 Features api: add support for Managed Agents deployments and environment variable credentials (47633bf)