1,316 pages for mode.

sent_count = len(messages sent in the compaction request) Claude Developer Platform · in the page build-with-claude/compaction …en/manage-claude/api-and-data-retention): eligible (excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements)) - Su… compaction-background Claude Developer Platform · in the page build-with-claude/compaction-background …eMetadata: status: beta betaHeader: compact-2026-09-04 supportedModels: - claude-fable-5-1 - claude-mythos-5-1 - claude-fable-5 - claude-mythos-5 - claude-mythos-preview… compaction-keep-recent-turns Claude Developer Platform · in the page build-with-claude/compaction-keep-recent-turns …eMetadata: status: beta betaHeader: compact-2026-09-04 supportedModels: - claude-fable-5-1 - claude-mythos-5-1 - claude-fable-5 - claude-mythos-5 - claude-mythos-preview… compaction-on-demand Claude Developer Platform · in the page build-with-claude/compaction-on-demand …eMetadata: status: beta betaHeader: compact-2026-09-04 supportedModels: - claude-fable-5-1 - claude-mythos-5-1 - claude-fable-5 - claude-mythos-5 - claude-mythos-preview… compaction-thinking-blocks Claude Developer Platform · in the page build-with-claude/compaction-thinking-blocks …hinking blocks in turns kept after on-demand compaction stay valid on models with preserved thinking, and how to check. featureMetadata: status: beta betaHeader: compact-2026-09-04 supportedMode… compaction-threshold Claude Developer Platform · in the page build-with-claude/compaction-threshold …26-01-12 zdr: eligibility: eligible note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). su… context-editing Claude Developer Platform · in the page build-with-claude/context-editing …te resource with diminishing returns, and irrelevant content degrades model focus. Context editing gives you fine-grained runtime control over that curation. For the broader principles behind context… context-windows Claude Developer Platform · in the page build-with-claude/context-windows …window works The "context window" refers to all the text a language model can reference when generating a response, including the response itself. This is different from the large corpus of data the… effort Claude Developer Platform · in the page build-with-claude/effort …atus: ga zdr: eligibility: eligible note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). su… This will automatically use the environment variable VOYAGE_API_KEY. Claude Developer Platform · in the page build-with-claude/embeddings …e introduces embeddings, their applications, and how to use embedding models for tasks such as search, recommendations, and anomaly detection. --- ## Before implementing embeddings When selecting an… extended-thinking Claude Developer Platform · in the page build-with-claude/extended-thinking …manual extended thinking with a fixed budget_tokens budget on Claude models that support it, and migrate to adaptive thinking. --- <Note> To learn how zero data retention (ZDR) applies to this fea… fallback-credit Claude Developer Platform · in the page build-with-claude/fallback-credit …e prompt-cache cost twice when you retry a refused request on another model. --- Prompt caches are per-model. When a model declines a request and you retry on another model, the conversation prefix a… files Claude Developer Platform · in the page build-with-claude/files …rt Referencing a `file_id` in a Messages request is supported on all models that support the given file type. [Images](https://platform.claude.com/docs/en/build-with-claude/vision) are supported on a… handling-stop-reasons Claude Developer Platform · in the page build-with-claude/handling-stop-reasons …onse as-is, continue the conversation, retry, or fall back to another model. For the full response schema, see the [Messages API reference](https://platform.claude.com/docs/en/api/messages/create).… mid-conversation-effort-example Claude Developer Platform · in the page build-with-claude/mid-conversation-effort-example --- title: Build an orchestration mode url: https://platform.claude.com/docs/en/build-with-claude/mid-conversation-effort-example description: Build a session-level mode that grants standing consent f… mid-conversation-system-messages Claude Developer Platform · in the page build-with-claude/mid-conversation-system-messages ….com/docs/en/build-with-claude/claude-in-amazon-bedrock), and [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/googl… multilingual-support Claude Developer Platform · in the page build-with-claude/multilingual-support …ticularly strong performance in zero-shot tasks across languages. The model maintains consistent relative performance across both widely spoken and lower-resource languages, making it a reliable choic… overview Claude Developer Platform · in the page build-with-claude/overview …ilities. --- Claude's API surface is organized into five areas: * **Model capabilities:** Control how Claude reasons and formats responses. * **Tools:** Let Claude take actions on the web or in your… pdf-support Claude Developer Platform · in the page build-with-claude/pdf-support …atus: ga zdr: eligibility: eligible note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). su… preserved-thinking Claude Developer Platform · in the page build-with-claude/preserved-thinking …with-claude/preserved-thinking description: Preserved thinking lets a model use a thinking block from an earlier turn only if that model or one of a fixed set of other models produced it and nothing b… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …_API_KEY" \ -H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 1024, "cache_control": {"type": "ephemeral"}, "system": "You are an AI… claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …prehensive guide to prompt engineering techniques for Claude's latest models, covering clarity, examples, XML structuring, thinking, and agentic systems. --- This is the reference for prompt engineer… overview Claude Developer Platform · in the page build-with-claude/prompt-engineering/overview …h-claude/prompt-engineering/claude-prompting-best-practices"> For model-specific tuning guidance for Claude's latest models, start here. </Card> </CardGroup> *** ## When to prompt engineer Th… prompting-claude-fable-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5 …ding patterns specific to Claude Fable 5 and Claude Mythos 5. For the model's specifications, pricing, and availability, see [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overvie… Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …itives, file edits, long outputs, subagents, and vision. --- For the model's capabilities, API changes, pricing, and availability, see [What's new in Claude Fable 5.1](https://platform.claude.com/doc… prompting-claude-haiku-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-haiku-5-5 …e covers the prompting patterns specific to Claude Haiku 5.5. For the model's API changes, see [What's new in Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/whats-new-haiku-5-5… prompting-claude-opus-4-8 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-4-8 …de Opus 5.5 from Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-5-5/migration-guide#migrating-from-claude-opus-4-8). For techniques that apply across all current Claude models, see [… prompting-claude-opus-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5 …uide covers the prompting patterns specific to Claude Opus 5. For the model's specifications, see [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview). For techniques that apply… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …de covers the prompting patterns specific to Claude Opus 5.5. For the model's capabilities and API changes, see [What's new in Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/what… prompting-claude-sonnet-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5 …de covers the prompting patterns specific to Claude Sonnet 5. For the model's specifications, see [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview). For techniques that a… prompting-claude-sonnet-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 …covers the prompting patterns specific to Claude Sonnet 5.5. For the model's API changes, see [What's new in Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-… refusals-and-fallback Claude Developer Platform · in the page build-with-claude/refusals-and-fallback …build-with-claude/refusals-and-fallback description: How Claude Fable models, Claude Opus models, Claude Sonnet 5.5, and Claude Haiku 5.5 return classifier refusals and how to retry refused requests o… search-results Claude Developer Platform · in the page build-with-claude/search-results …ere Claude needs to attribute answers to your documents. All [active models](https://platform.claude.com/docs/en/models/overview) support search results with citations, with the exception of Claude H… skills-guide Claude Developer Platform · in the page build-with-claude/skills-guide …ed in your requests Skills require the code execution tool, so use a model from its [model compatibility list](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool#compat… streaming Claude Developer Platform · in the page build-with-claude/streaming …de="shell:cURL"> ```bash CLI ant messages create --stream \ --model claude-opus-5-5 \ --max-tokens 1024 \ --message '{role: user, content: "Hello"}' ``` ```python Python client… structured-outputs Claude Developer Platform · in the page build-with-claude/structured-outputs …atus: ga zdr: eligibility: eligible note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). su… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …Claude an advisory token budget for the full agentic loop to help the model self-regulate on long agentic tasks. featureMetadata: status: beta betaHeader: task-budgets-2026-03-13 supportedModels… thinking Claude Developer Platform · in the page build-with-claude/thinking ….claude.com/docs/en/manage-claude/api-and-data-retention). </Note> A model that answers in a single pass has to get everything right on the first try: no scratch work, no checking, no changing approa… thinking-steering-and-cost Claude Developer Platform · in the page build-with-claude/thinking-steering-and-cost …/api-and-data-retention). </Note> Claude's thinking is adaptive: the model evaluates each request and determines whether to think and how much. You set an intent, optionally specify the effort, and t… thinking-tool-workflows Claude Developer Platform · in the page build-with-claude/thinking-tool-workflows …he Thinking page: * [Limit tool choice to `auto` or `none` in manual mode](https://platform.claude.com/docs/en/build-with-claude/thinking#thinking-with-tool-use): `tool_choice` options that force too… thinking-troubleshooting Claude Developer Platform · in the page build-with-claude/thinking-troubleshooting …thinking blocks back in later requests). The first section maps each model to its supported thinking configurations and the ones it rejects; the sections after it each start from a symptom you observ… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …it to Claude. Use token counts to manage rate limits and costs, make model routing decisions, and fit prompts to a target length. featureMetadata: status: ga zdr: eligibility: eligible no… vision Claude Developer Platform · in the page build-with-claude/vision …ad once, reference many times) <Note> On Amazon Bedrock and Claude Models on Google Cloud (Google managed), only base64-encoded sources are currently available. </Note> <Tip> Just as [placing lo… vision-coordinates Claude Developer Platform · in the page build-with-claude/vision-coordinates …ic region of an image. For sending images, supported formats, and per-model resolution limits, see [Vision](https://platform.claude.com/docs/en/build-with-claude/vision). <Note> **Claude works best… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …----------------------------------------- | | **What it is** | Direct model prompting access | Pre-built, configurable agent harness that runs in managed infrastructure | | **Best for**… API usage primer for Claude Claude Developer Platform · in the page claude_api_primer …basics of using the Claude API. It gives explanation and examples of model IDs/the basic messages API, tool use, streaming, thinking, and nothing else. --- # API usage primer for Claude > This guid… apply Claude Developer Platform · in the page cli-sdks-libraries/cli/apply …marizer.md"> ```markdown --- name: Summarizer model: claude-opus-5-5 tools: - type: agent_toolset_20260401 --- You are a helpful assistant that write… On a remote host without a browser: Claude Developer Platform · in the page cli-sdks-libraries/cli/authentication …```bash CLI ant messages create \ --workspace-id wrkspc_01... \ --model claude-opus-5-5 \ --max-tokens 1024 \ --message '{role: user, content: "Hello, Claude"}' ``` ## Check authentication st… quickstart Claude Developer Platform · in the page cli-sdks-libraries/cli/quickstart …/docs/en/api/cli/messages/create): ```bash ant messages create \ --model claude-opus-5-5 \ --max-tokens 1024 \ --message '{role: user, content: "Hello, Claude"}' ``` ```text Output wrap { "m… scripting Claude Developer Platform · in the page cli-sdks-libraries/cli/scripting …n: 2023-06-01" \ -H "content-type: application/json" \ -d '{ "model": "claude-opus-5-5", "max_tokens": 256, "messages": [{"role": "user", "content": "hi"}] }' ``` Run [`ant auth sta…