https://aitoolchain.io/tools/anthropic New releases and features in Anthropic, tracked by The AI Toolchain. en Thu, 27 Aug 2026 00:00:00 GMT https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Thu, 27 Aug 2026 00:00:00 GMT Claude API adds personal and service account API keys with workspace scoping; Files and Skills APIs graduate out of beta. • Adds personal keys and service account keys in the Claude Console, scoped to a specific workspace or admin endpoints across any workspace the linked account can access — enabling per-account usage tracking and legitimacy enforcement by org admins. • `client.beta.files` and `client.beta.skills` no longer send the `files-api-2025-04-14` and `skills-2025-10-02` beta headers across Python SDK 1.2.0, TypeScript SDK 0.122.0, Go SDK 1.68.0, Java SDK 2.59.0, Ruby SDK 1.67.0, and C# SDK 12.44.0 — the Files and Skills APIs are now GA. • client.beta.skills.delete() now deletes a Skill together with all of its versions (previously deleted only the referenced version under the beta header). Breaking changes: • The beta Messages type `BetaSkill` is renamed to `BetaContainerSkill` in the SDKs listed (Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0, C# 12.44.0); code referencing `BetaSkill` by name will break. • client.beta.skills.delete() now deletes a Skill and ALL of its versions — callers expecting single-version deletion under the old beta behavior will see additional versions removed. • `client.beta.files` and `client.beta.skills` now return the GA response shapes (same as `client.files` and `client.skills`); code that relied on the beta-specific response shapes will break unless it still sends the beta headers explicitly. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Wed, 26 Aug 2026 00:00:00 GMT Compliance API adds Claude Science and Office 365 surfaces; Admin API lands in CLI and seven SDKs • Compliance API session endpoints for Cowork and Claude Code sessions are now generally available (out of beta); see Retrieve session transcripts. • Compliance API local session endpoints now return transcripts for Claude Science sessions via `product_surface` value `claude_science`, in beta for Claude Enterprise organizations. • Compliance API local session endpoints now return transcripts for Claude for Microsoft 365 sessions in Excel, PowerPoint, Word, and Outlook via `product_surface` values beginning with `office_agents`, in beta for Claude Enterprise organizations, using the existing Compliance Access Key and `read:compliance_user_data` scope. • Admin API is now available in the `ant` CLI and the Python, TypeScript, C#, Go, Java, PHP, and Ruby SDKs under `client.beta.organization`, covering organization info, members, invites, workspaces and workspace members, API keys, rate limits, service accounts, workload identity federation issuers and rules, and customer-managed encryption keys. • The `ant` CLI and SDKs read an Admin API key from `ANTHROPIC_API_KEY` or an `org:admin` OAuth token from `ANTHROPIC_AUTH_TOKEN`. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Sat, 22 Aug 2026 09:40:37 GMT Python SDK v1.0 moves HTTP layer to httpx2 and drops long-deprecated surfaces including the legacy Text Completions API. • Requires Python 3.10 or later. • On the async client, `.with_raw_response` results now use await response.parse() instead of the previous synchronous parse call. Breaking changes: • The legacy Text Completions API is removed. • The `temperature`, `top_p`, and `top_k` parameters on Messages methods are removed. • The tool runner's `client-side compaction_control` is removed. • On the async client, `.with_raw_response` results now require await response.parse() — synchronous .parse() no longer works. • `AnthropicBedrock` now raises an error when no AWS region is configured instead of defaulting to `us-east-1`. • Custom `http_client`, `Timeout`, and transport objects must now be built from `httpx2`, not `httpx`; the `DefaultHttpxClient` helpers are unchanged. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Fri, 21 Aug 2026 09:52:33 GMT Claude API adds GA computer use toolset, new browser use toolset, and GA Admin API user-management endpoints for Enterprise orgs. • Promotes the computer use tool to general availability as `computer_toolset_20260801`, requiring no beta header; adds batch actions (multiple actions per turn), zoom enabled by default, and per-member configuration via `configs`. • Introduces `browser_toolset_20260801`, a new client toolset for driving an application-hosted browser viewport; reads the page accessibility tree, elements, forms, and tabs, and adds element references, form input, tab management, download reporting, and opt-in file upload on top of screenshot-and-click control. Breaking changes: • Upgrading an existing computer use integration to `computer_toolset_20260801` changes the request shape and tool handling; migration from `computer_20251124` is required (see 'Migrate from computer_20251124'). https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Fri, 21 Aug 2026 09:52:33 GMT Claude API adds GA computer use toolset, new browser use toolset, and GA Admin API user-management endpoints for Enterprise orgs. • Promotes the computer use tool to general availability as `computer_toolset_20260801`, requiring no beta header; adds batch actions (multiple actions per turn), zoom enabled by default, and per-member configuration via `configs`. • Introduces `browser_toolset_20260801`, a new client toolset for driving an application-hosted browser viewport; reads the page accessibility tree, elements, forms, and tabs, and adds element references, form input, tab management, download reporting, and opt-in file upload on top of screenshot-and-click control. Breaking changes: • Upgrading an existing computer use integration to `computer_toolset_20260801` changes the request shape and tool handling; migration from `computer_20251124` is required (see 'Migrate from computer_20251124'). https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Thu, 20 Aug 2026 09:49:54 GMT Claude API reaches GA for Files, Skills, and Enterprise user management; Managed Agents gains budgets, advisors, memory stores, domain restrictions, and more. • Admin API user-management endpoints (members, invites, groups, custom roles) for Claude Enterprise organizations are now GA; the `anthropic-beta: ce-user-management-2026-07-13` beta header is no longer required on group and custom-role requests. • Files API is now GA on `/v1/files`; the `files-api-2025-04-14` beta header is no longer required. GA response format adds `expires_in_seconds` (upload) and `expires_at` (file objects), `page` and `next_page` pagination, and an `ids[]` filter on list requests. Storage limit is 1 TB per organization; rate limit is 500 requests per minute. • Agent Skills and the Skills API (`/v1/skills`) are now GA; the `skills-2025-10-02` beta header is no longer required, including for Messages API requests that load Skills through the `container` parameter. • Adds `allowed_domains` and `blocked_domains` controls on `web_search` and `web_fetch` tool entries in the `agent_toolset_20260401` `configs` array for Claude Managed Agents; `web_fetch` also accepts `max_content_tokens` and `web_search` accepts `user_location`. • Claude Managed Agents sessions running in a self-hosted sandbox can now attach memory stores; Python, TypeScript, and Go SDK workers download each store to its `mount_path` and sync changes back. • Redesigned session viewer in the Claude Console adds a timeline minimap, transcript grouped by model request, and an Inspector panel covering session details and cost, raw events, per-tool statistics, mounted resources, and per-thread activity. • Workbench is now Playground at `platform.claude.com/playground`; supports every Messages API parameter, includes feature templates (code execution, web search), and shows the full SDK request and API response for each run. • Compliance API (beta for Claude Enterprise) adds `GET /v1/compliance/apps/sessions/local` to list local Cowork and Claude Code sessions, `GET /v1/compliance/apps/sessions/local/{session_id}` for session metadata, and `GET /v1/compliance/apps/sessions/local/{session_id}/messages` for transcripts, using the existing Compliance Access Key with `read:compliance_user_data` scope. • Adds `anthropic-workspace-id` response header to the Claude API, carrying the `wrkspc_`-prefixed ID of the workspace the request resolved to. • Adds session budget support for Claude Managed Agents: set a hard spend cap per session; sessions that reach the cap pause with the `budget_reached` stop reason; deployments accept the same `budget` field and apply it to every session they start. • Adds advisor support for Claude Managed Agents sessions: configure a `{"type": "advisor"}` entry in the agent's `multiagent` roster to give the primary thread a model to consult mid-turn for strategic guidance. • Adds `inference_geo` inside the `model` object when creating a Claude Managed Agents agent, or as a per-session override, to control where model inference runs. • Claude Managed Agents sessions can now load skills from a GitHub repository; skills placed in the repository's root `.claude/skills` directory are discovered automatically at session start. • Inference hooks are now in beta for Claude Enterprise organizations: point Claude at an AI security server to hold governed prompts from claude.ai, Cowork, and Claude Code for allow/deny verdicts before inference; denials are recorded in the compliance Activity Feed. • Compliance API (beta for Claude Enterprise) adds `GET /v1/compliance/apps/sessions/remote` to list cloud Cowork sessions and `GET /v1/compliance/apps/sessions/remote/{session_id}/messages` for transcripts. • Launches Claude Opus 5 (`claude-opus-5`) with a 1 M token context window, 128k max output tokens, thinking on by default, and full effort ladder (`low`, `medium`, `high`, `xhigh`, `max`), at $5 / $25 per MTok. • Mid-conversation tool changes are now in beta on Claude Fable 5, Claude Mythos 5, Claude Opus 4.8, and Claude Opus 5: add or remove tools between turns while preserving the prompt cache using the `mid-conversation-tool-changes-2026-07-01` beta header. • The `fallbacks` parameter now supports a `"default"` mode applying Anthropic's recommended fallback models by refusal category; requires the `server-side-fallback-2026-07-01` beta header. • Adds `effort` field inside the `model` object when creating a Claude Managed Agents agent. • Claude Managed Agents webhooks now cover four `environment.*` event types and three `memory_store.*` event types for environment and memory store lifecycle changes. • Adds `initial_events` parameter on `POST /v1/sessions` (up to 50 `user.message` and `user.define_outcome` events) to seed a Claude Managed Agents session and start the agent loop in the same call. • The `version` field is now optional when updating a Claude Managed Agents agent via the update endpoint; omit it to apply unconditionally, or include it for optimistic concurrency (mismatch returns 409). • Claude Managed Agents session thread event stream (`GET /v1/sessions/{session_id}/threads/{thread_id}/stream`) now accepts the `event_deltas[]` query parameter to preview subagent text as the model generates it. Breaking changes: • On Claude Opus 5, `thinking: {"type": "disabled"}` combined with `effort` of `xhigh` or `max` returns a 400 error; this was allowed on Claude Opus 4.8. • Requests to `claude-opus-4-7` with `speed: "fast"` now return an error; unlike Claude Opus 4.6, they do not fall back to standard speed. • Claude Opus 4.1 (`claude-opus-4-1-20250805`) has been retired; all API requests to this model now return an error. • The experimental prompt tools APIs (`/v1/experimental/generate_prompt`, `/v1/experimental/improve_prompt`, `/v1/experimental/templatize_prompt`) are being retired on August 17, 2026. • The legacy Workbench (`platform.claude.com/workbench`) is being sunset on August 17, 2026; saved prompts, variables, and evals are not supported in the updated Playground. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Thu, 20 Aug 2026 09:49:54 GMT Claude API reaches GA for Files, Skills, and Enterprise user management; Managed Agents gains budgets, advisors, memory stores, domain restrictions, and more. • Admin API user-management endpoints (members, invites, groups, custom roles) for Claude Enterprise organizations are now GA; the `anthropic-beta: ce-user-management-2026-07-13` beta header is no longer required on group and custom-role requests. • Files API is now GA on `/v1/files`; the `files-api-2025-04-14` beta header is no longer required. GA response format adds `expires_in_seconds` (upload) and `expires_at` (file objects), `page` and `next_page` pagination, and an `ids[]` filter on list requests. Storage limit is 1 TB per organization; rate limit is 500 requests per minute. • Agent Skills and the Skills API (`/v1/skills`) are now GA; the `skills-2025-10-02` beta header is no longer required, including for Messages API requests that load Skills through the `container` parameter. • Adds `allowed_domains` and `blocked_domains` controls on `web_search` and `web_fetch` tool entries in the `agent_toolset_20260401` `configs` array for Claude Managed Agents; `web_fetch` also accepts `max_content_tokens` and `web_search` accepts `user_location`. • Claude Managed Agents sessions running in a self-hosted sandbox can now attach memory stores; Python, TypeScript, and Go SDK workers download each store to its `mount_path` and sync changes back. • Redesigned session viewer in the Claude Console adds a timeline minimap, transcript grouped by model request, and an Inspector panel covering session details and cost, raw events, per-tool statistics, mounted resources, and per-thread activity. • Workbench is now Playground at `platform.claude.com/playground`; supports every Messages API parameter, includes feature templates (code execution, web search), and shows the full SDK request and API response for each run. • Compliance API (beta for Claude Enterprise) adds `GET /v1/compliance/apps/sessions/local` to list local Cowork and Claude Code sessions, `GET /v1/compliance/apps/sessions/local/{session_id}` for session metadata, and `GET /v1/compliance/apps/sessions/local/{session_id}/messages` for transcripts, using the existing Compliance Access Key with `read:compliance_user_data` scope. • Adds `anthropic-workspace-id` response header to the Claude API, carrying the `wrkspc_`-prefixed ID of the workspace the request resolved to. • Adds session budget support for Claude Managed Agents: set a hard spend cap per session; sessions that reach the cap pause with the `budget_reached` stop reason; deployments accept the same `budget` field and apply it to every session they start. • Adds advisor support for Claude Managed Agents sessions: configure a `{"type": "advisor"}` entry in the agent's `multiagent` roster to give the primary thread a model to consult mid-turn for strategic guidance. • Adds `inference_geo` inside the `model` object when creating a Claude Managed Agents agent, or as a per-session override, to control where model inference runs. • Claude Managed Agents sessions can now load skills from a GitHub repository; skills placed in the repository's root `.claude/skills` directory are discovered automatically at session start. • Inference hooks are now in beta for Claude Enterprise organizations: point Claude at an AI security server to hold governed prompts from claude.ai, Cowork, and Claude Code for allow/deny verdicts before inference; denials are recorded in the compliance Activity Feed. • Compliance API (beta for Claude Enterprise) adds `GET /v1/compliance/apps/sessions/remote` to list cloud Cowork sessions and `GET /v1/compliance/apps/sessions/remote/{session_id}/messages` for transcripts. • Launches Claude Opus 5 (`claude-opus-5`) with a 1 M token context window, 128k max output tokens, thinking on by default, and full effort ladder (`low`, `medium`, `high`, `xhigh`, `max`), at $5 / $25 per MTok. • Mid-conversation tool changes are now in beta on Claude Fable 5, Claude Mythos 5, Claude Opus 4.8, and Claude Opus 5: add or remove tools between turns while preserving the prompt cache using the `mid-conversation-tool-changes-2026-07-01` beta header. • The `fallbacks` parameter now supports a `"default"` mode applying Anthropic's recommended fallback models by refusal category; requires the `server-side-fallback-2026-07-01` beta header. • Adds `effort` field inside the `model` object when creating a Claude Managed Agents agent. • Claude Managed Agents webhooks now cover four `environment.*` event types and three `memory_store.*` event types for environment and memory store lifecycle changes. • Adds `initial_events` parameter on `POST /v1/sessions` (up to 50 `user.message` and `user.define_outcome` events) to seed a Claude Managed Agents session and start the agent loop in the same call. • The `version` field is now optional when updating a Claude Managed Agents agent via the update endpoint; omit it to apply unconditionally, or include it for optimistic concurrency (mismatch returns 409). • Claude Managed Agents session thread event stream (`GET /v1/sessions/{session_id}/threads/{thread_id}/stream`) now accepts the `event_deltas[]` query parameter to preview subagent text as the model generates it. Breaking changes: • On Claude Opus 5, `thinking: {"type": "disabled"}` combined with `effort` of `xhigh` or `max` returns a 400 error; this was allowed on Claude Opus 4.8. • Requests to `claude-opus-4-7` with `speed: "fast"` now return an error; unlike Claude Opus 4.6, they do not fall back to standard speed. • Claude Opus 4.1 (`claude-opus-4-1-20250805`) has been retired; all API requests to this model now return an error. • The experimental prompt tools APIs (`/v1/experimental/generate_prompt`, `/v1/experimental/improve_prompt`, `/v1/experimental/templatize_prompt`) are being retired on August 17, 2026. • The legacy Workbench (`platform.claude.com/workbench`) is being sunset on August 17, 2026; saved prompts, variables, and evals are not supported in the updated Playground. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Thu, 20 Aug 2026 00:00:00 GMT Python SDK v1.0 ships with httpx2, drops legacy APIs, and tightens async and AWS region handling. • Migrates the SDK's HTTP layer from `httpx` to `httpx2`; build custom `http_client`, `Timeout`, and transport objects from `httpx2` — the `DefaultHttpxClient` helpers are unchanged. • Adds httpx2.alias_httpx() startup call to preserve compatibility with tracing or mocking libraries that patch `httpx`. • Requires Python 3.10 or later. • Removes the legacy Text Completions API. • Removes the `temperature`, `top_p`, and `top_k` parameters from Messages methods. • Removes the tool runner's client-side `compaction_control`. • Changes async client `.with_raw_response` so results now require await response.parse() instead of a synchronous call. • `AnthropicBedrock` now raises an error when no AWS region is configured, rather than silently defaulting to `us-east-1`. Breaking changes: • The HTTP layer moves from `httpx` to `httpx2`; custom `http_client`, `Timeout`, and transport objects must now be constructed from `httpx2`, not `httpx`. • Tracing or mocking libraries that patch `httpx` will no longer intercept SDK calls unless httpx2.alias_httpx() is called at startup. • Python 3.9 and earlier are no longer supported; Python 3.10 or later is required. • The legacy Text Completions API is removed. • The `temperature`, `top_p`, and `top_k` parameters on Messages methods are removed. • The tool runner's `compaction_control` option is removed. • On the async client, `.with_raw_response` results now require await response.parse() — code that called .parse() synchronously will break. • `AnthropicBedrock` now raises an error when no AWS region is configured, breaking setups that relied on the implicit `us-east-1` default. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Wed, 19 Aug 2026 00:00:00 GMT Computer use and browser use toolsets GA, Files/Skills/Admin APIs out of beta, domain restrictions and memory stores for Managed Agents. • Promotes `computer_toolset_20260801` to GA on the Claude API — no beta header required, adds batch actions (multiple actions per turn), enables zoom by default, and supports per-member configuration via `configs`; earlier beta versions remain available. • Promotes the Files API (`/v1/files` endpoints) to GA — beta header `files-api-2025-04-14` no longer required; new response format adds `expires_at` on file objects, `expires_in_seconds` on upload, and `page`/`next_page` pagination plus an `ids[]` filter on list requests. • Promotes Agent Skills and the Skills API (`/v1/skills`) to GA — beta header `skills-2025-10-02` no longer required, including Messages API requests loading Skills via the `container` parameter. • Adds domain-restriction controls for `web_search` and `web_fetch` tools in Claude Managed Agents: set `allowed_domains` or `blocked_domains` on the tool's entry in the `agent_toolset_20260401` `configs` array; `web_fetch` also accepts `max_content_tokens` and `web_search` accepts `user_location`. • Redesigns the session viewer in the Claude Console with a timeline minimap, a transcript grouped by model request, and an Inspector panel covering session details, cost, raw events, per-tool statistics, mounted resources, and per-thread activity. • Both `computer_toolset_20260801` and `browser_toolset_20260801` are available for Claude Fable 5, Claude Mythos 5, Claude Opus 5, Claude Sonnet 5, and Claude Opus 4.8. Breaking changes: • Upgrading an existing computer-use integration to `computer_toolset_20260801` changes the request shape and tool handling — existing integrations must follow the migration guide at 'Migrate from computer_20251124'. • Files API requests sent without the `files-api-2025-04-14` beta header now receive the new response format (which includes `expires_at`, `expires_in_seconds`, `page`/`next_page`, and `ids[]`), not the previous format. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Tue, 18 Aug 2026 00:00:00 GMT Workbench is renamed to Playground, now supporting every Messages API parameter plus built-in templates for code execution and web search. • Renames Workbench to Playground at `platform.claude.com/playground`, now covering every Messages API parameter in an interactive UI. • Adds built-in templates in Playground demonstrating API features including code execution and web search. • Playground surfaces the full SDK request and raw API response for each run, aiding API exploration and integration development. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Tue, 11 Aug 2026 00:00:00 GMT Compliance API gains local Cowork/Claude Code session transcripts; Claude API now returns workspace ID in response headers. • Adds `GET /v1/compliance/apps/sessions/local` endpoint to list Cowork and Claude Code sessions running on users' machines across a Claude Enterprise organization (beta). • Adds `GET /v1/compliance/apps/sessions/local/{session_id}` endpoint to retrieve metadata for a single local session. • Adds `GET /v1/compliance/apps/sessions/local/{session_id}/messages` endpoint to retrieve the full transcript of a local session. • All three new Compliance API endpoints authenticate with the existing Compliance Access Key and require the `read:compliance_user_data` scope. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Fri, 07 Aug 2026 00:00:00 GMT Claude Managed Agents gains session budgets, advisor models, inference geo control, and GitHub-sourced skills • Adds spend caps to Claude Managed Agents sessions via a budget field; sessions that hit the cap pause with the `budget_reached` stop reason and resume when the budget is changed or removed. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Wed, 05 Aug 2026 00:00:00 GMT Inference hooks (beta) let Enterprise orgs gate every Claude prompt through their own AI security server before inference runs. • Adds inference hooks (beta) for Claude Enterprise organizations: point Claude at your AI security server and every governed prompt across claude.ai, Cowork, and Claude Code is held for an allow/deny verdict before inference proceeds — with signed requests, configurable failure handling, and denials recorded in the compliance Activity Feed. Breaking changes: • The `claude-opus-4-1-20250805` model has been retired; all API requests to that model now return an error. Upgrade to Claude Opus 5. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Mon, 03 Aug 2026 00:00:00 GMT Compliance API gains two endpoints to list and retrieve Cowork session transcripts for Claude Enterprise orgs (beta). • Adds `GET /v1/compliance/apps/sessions/remote` endpoint to list Cowork sessions started on claude.ai web or mobile, available in beta for Claude Enterprise organizations. • Both endpoints use the existing Compliance Access Key with the `read:compliance_user_data` scope — no new credentials required. https://platform.claude.com/docs/en/release-notes/api https://platform.claude.com/docs/en/release-notes/api Sat, 01 Aug 2026 00:00:00 GMT Claude Dreams research preview now supports Claude Opus 5. • Extends the Dreams research preview to support Claude Opus 5.