1,278 pages for version.

fast-mode Claude Developer Platform · in the page build-with-claude/fast-mode …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 4… files Claude Developer Platform · in the page build-with-claude/files …v1/files \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -F "file=@/path/to/document.pdf" ``` ```bash CLI ant files upload --file /path/to/document.pdf… handling-stop-reasons Claude Developer Platform · in the page build-with-claude/handling-stop-reasons …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1… message-threads Claude Developer Platform · in the page build-with-claude/message-threads …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "anthropic-beta: message-threads-2026-08-12" \ -H "content-type: application/json" \ -d '{… mid-conversation-effort-example Claude Developer Platform · in the page build-with-claude/mid-conversation-effort-example …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 6… mid-conversation-system-messages Claude Developer Platform · in the page build-with-claude/mid-conversation-system-messages …on/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "anthropic-beta: inline-tools-2026-09-15" \ -d '{ "model": "claude-opus-5-5", "max_t… multilingual-support Claude Developer Platform · in the page build-with-claude/multilingual-support …on/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "system": "Always respond in Fr… overview Claude Developer Platform · in the page build-with-claude/overview …/docs/en/managed-agents/agent-setup) | A reusable, versioned configuration of the model, system prompt, tools, MCP servers and skills that a session runs.… pdf-support Claude Developer Platform · in the page build-with-claude/pdf-support …on/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "messages": [{ "role":… preserved-thinking Claude Developer Platform · in the page build-with-claude/preserved-thinking …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "anthropic-beta: thinking-binding-controls-2026-08-01" \ -H "content-type: application/json" \… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …on/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "cache_control": {"type": "ephe… claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …on/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "system": "You are a helpful co… overview Claude Developer Platform · in the page build-with-claude/prompt-engineering/overview …d/19jzLgRruG9kjUQNKtCg1ZjdD6l6weA6qRXG5zLIAhC8"> A lighter-weight version of the prompt engineering tutorial, as an interactive spreadsheet. </Card> </CardGroup> Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …FILES = { "pyproject.toml": """\ [project] name = "demo" version = "0.1.0" description = "Demo project for the batching example" """, "README.md": """\ # demo A small demo… prompting-claude-haiku-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-haiku-5-5 …data ends well before today's date. Records, office holders, prices, versions, rules and anything "latest" may have changed since then, so search for those before you answer, even when you feel sure.… prompting-claude-opus-4-8 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-4-8 …`computer_toolset_20260801` toolset and the `computer_20251124` tool version. It also supports the [browser use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) (… prompting-claude-opus-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5 …the SDK’s `max_budget_usd` (typescript: `maxBudgetUsd`) option. Older versions of Claude Code don’t have them, so update Claude Code and any pinned SDK before pointing your harness at Claude Opus 5. C… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …hich boxes an arrow connects in a flowchart, what changed between two versions of a diagram, or exactly when a meeting starts and ends in a calendar screenshot. It’s also more reliable at computer use… prompting-claude-sonnet-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5 …`computer_toolset_20260801` toolset and the `computer_20251124` tool version. It also supports the [browser use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) (… refusals-and-fallback Claude Developer Platform · in the page build-with-claude/refusals-and-fallback …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "anthropic-beta: server-side-fallback-2026-07-01" \ -H "content-type: application/json" \ -d… search-results Claude Developer Platform · in the page build-with-claude/search-results …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1… skills-guide Claude Developer Platform · in the page build-with-claude/skills-guide ….com/docs/en/api/skills/list) - CRUD operations for Skills * [Skill versions API reference](https://platform.claude.com/docs/en/api/skills/versions/list) - Version management </Note> <Note> To le… streaming Claude Developer Platform · in the page build-with-claude/streaming …ssage": "Overloaded"}} ``` ### Other events In accordance with the [versioning policy](https://platform.claude.com/docs/en/api/versioning), new event types may be added, and your code should handle… structured-outputs Claude Developer Platform · in the page build-with-claude/structured-outputs …son" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "messages": [… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …\ -N \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "anthropic-beta: task-budgets-2026-03-13" \ -H "content-type: application/json" \ -d '{… thinking Claude Developer Platform · in the page build-with-claude/thinking …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1… thinking-tool-workflows Claude Developer Platform · in the page build-with-claude/thinking-tool-workflows …curl https://api.anthropic.com/v1/messages \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -d '{… thinking-troubleshooting Claude Developer Platform · in the page build-with-claude/thinking-troubleshooting …xtended-thinking#migrating-to-adaptive-thinking) walks through the conversion. ## A 400 error after sending `thinking: {type: "disabled"}` The request fails with a 400 error. On Claude Fable 5.1, Cl… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …PI_KEY" \ -H "content-type: application/json" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "system": "You are a scientist", "messages": [{… vision Claude Developer Platform · in the page build-with-claude/vision …messages \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -H "content-type: application/json" \ -d @- <<EOF { "model": "claude-opus-5-5", "max_toke… vision-coordinates Claude Developer Platform · in the page build-with-claude/vision-coordinates …image Claude processes and the coordinates Claude returns need no conversion. First check which resolution tier your model is on (see [Resolution and token cost](https://platform.claude.com/docs/en/… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …models and Claude Mythos Preview, or on any model starting with [API version `2026-10-21`](https://platform.claude.com/docs/en/api/migration-2026-10-21#sampling-parameters). Setting them to a non-def… apply Claude Developer Platform · in the page cli-sdks-libraries/cli/apply …/docs/en/cli-sdks-libraries/cli/quickstart). `ant apply` requires CLI version 1.30.0 or later. ## Apply your first agent Write the agent as a Markdown file under `agents/` and apply it: <CodeGroup>… On a remote host without a browser: Claude Developer Platform · in the page cli-sdks-libraries/cli/authentication …://platform.claude.com/docs/en/cli-sdks-libraries/cli/scripting"> Version control for API resources, scripting patterns, and use from Claude Code </Card> <Card title="Workload Identity Federa… quickstart Claude Developer Platform · in the page cli-sdks-libraries/cli/quickstart …environments, download the release binary directly. ```bash VERSION=2.7.1 OS=$(uname -s | tr '[:upper:]' '[:lower:]') case $(uname -m) in x86_64) ARCH=amd64 ;; aarch64) A… scripting Claude Developer Platform · in the page cli-sdks-libraries/cli/scripting …form.claude.com/docs/en/cli-sdks-libraries/cli/scripting description: Version-control API resources as files with ant apply, chain ant CLI commands in scripts, operate on resources from Claude Code, a… sessions-connect Claude Developer Platform · in the page cli-sdks-libraries/cli/sessions-connect …nsole’s session viewer in your browser instead. The command requires version 1.32.0 or later of the CLI. To install or update the CLI and authenticate, see the [CLI quickstart](https://platform.claud… using Claude Developer Platform · in the page cli-sdks-libraries/cli/using …com/docs/en/cli-sdks-libraries/cli/quickstart). To chain commands and version-control resources, see [CLI scripting and automation](https://platform.claude.com/docs/en/cli-sdks-libraries/cli/scripting… openai-sdk Claude Developer Platform · in the page cli-sdks-libraries/libraries/openai-sdk …i/errors#request-id) in place of the `request-id` header. | | `openai-version` | Not returned… overview Claude Developer Platform · in the page cli-sdks-libraries/overview …Sorbet types, streaming helpers </Card> </CardGroup> Each major version of a client SDK sends one [API version](https://platform.claude.com/docs/en/api/versioning) by default, and a new major ve… csharp Claude Developer Platform · in the page cli-sdks-libraries/sdks/csharp …#-specific SDK features and configuration. </Info> <Warning> As of version 10+, the `Anthropic` package is now the official Anthropic SDK for C#. Package versions 3.X and below were previously used… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …ON.ExtraFields`, which is a `map[string]respjson.Field`. ## Semantic versioning This package generally follows [SemVer](https://semver.org/spec/v2.0.0.html) conventions, though certain backward-inco… java Claude Developer Platform · in the page cli-sdks-libraries/sdks/java …ic</groupId> <artifactId>anthropic-java</artifactId> <version>3.6.0</version> </dependency> ``` </Tab> </Tabs> ### Add-ons Cloud platform integrations and the client-side M… php Claude Developer Platform · in the page cli-sdks-libraries/sdks/php …opic-managed#project-location-and-workspace-resolution). ## Semantic versioning This package follows [SemVer](https://semver.org/spec/v2.0.0.html) conventions. This package considers improvements t… For Amazon Bedrock support Claude Developer Platform · in the page cli-sdks-libraries/sdks/python …. ``` ## Default headers The SDK automatically sends the `anthropic-version` header set to the API version for this major version of the SDK (see [Semantic versioning](https://platform.claude.com/do… Automatically handles tool execution loop Claude Developer Platform · in the page cli-sdks-libraries/sdks/ruby …esolution) for how the client resolves the workspace ID. ## Semantic versioning This package follows [SemVer](https://semver.org/spec/v2.0.0.html) conventions. This package considers improvements t… typescript Claude Developer Platform · in the page cli-sdks-libraries/sdks/typescript …* Node.js 20 LTS or later ([non-EOL](https://endoflife.date/nodejs)) versions. * Deno v1.28.0 or higher. * Bun 1.0 or later. * Cloudflare Workers. * Vercel Edge Runtime. * Jest 28 or greater with the… get-started Claude Developer Platform · in the page get-started …ments, download the release binary directly. ```bash VERSION=2.7.1 OS=$(uname -s | tr '[:upper:]' '[:lower:]') case $(uname -m) in x86_64) ARCH=amd64 ;;… home Claude Developer Platform · in the page home …son" \ -H "x-api-key: $ANTHROPIC_API_KEY" \ -H "anthropic-version: 2026-10-21" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "messages": [{… access-transparency Claude Developer Platform · in the page manage-claude/access-transparency …-H "x-api-key: $ANTHROPIC_COMPLIANCE_ACCESS_KEY" \ -H "anthropic-version: 2026-10-21" ``` Pagination, date-range filtering (`created_at.gte` / `.lt`), and the response envelope (`has_more`, `fir…