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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 21 Oct 2026
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99* **Model capabilities:** Control how Claude reasons and formats responses.
1010* **Tools:** Let Claude take actions on the web or in your environment.
11* **Tool infrastructure:** Handles discovery and orchestration at scale.
12* **Context management:** Keeps long-running sessions efficient.
11* **Tool infrastructure:** Handle discovery and orchestration at scale.
12* **Context management:** Keep long-running sessions efficient.
1313* **Files and assets:** Manage the documents and data you provide to Claude.
1414 
1515If you're new, start with [model capabilities](https://platform.claude.com/docs/en/build-with-claude/overview#model-capabilities) and [tools](https://platform.claude.com/docs/en/build-with-claude/overview#tools). Return to the other sections when you're ready to optimize cost, latency, or scale.
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4141| Feature | Description | Zero Data Retention (ZDR) | Availability |
4242| --------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
4343| [Context windows](https://platform.claude.com/docs/en/build-with-claude/context-windows) | Up to 1M tokens for processing large documents, extensive code bases, and long conversations. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
44| [Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking) | Let Claude dynamically determine when and how much to think. The only thinking mode on Claude 4.7 and later models. Use the effort parameter to control thinking depth. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
44| [Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking) | Let Claude dynamically determine when and how much to think. The only thinking mode on Claude 4.7 and later models. Use the `effort` parameter to control thinking depth. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
4545| [Batch processing](https://platform.claude.com/docs/en/build-with-claude/batch-processing) | Process large volumes of requests asynchronously for cost savings. Send batches with a large number of queries per batch. Batch API calls cost 50% less than standard API calls. | Not ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws /> |
4646| [Citations](https://platform.claude.com/docs/en/build-with-claude/citations) | Ground Claude's responses in source documents. With Citations, Claude can provide detailed references to the exact sentences and passages it uses to generate responses, leading to more verifiable, trustworthy outputs. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
4747| [Data residency](https://platform.claude.com/docs/en/manage-claude/data-residency) | Control where model inference runs using geographic controls. Specify `"global"` or `"us"` routing per request through the `inference_geo` parameter. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws /> |
48| [Effort](https://platform.claude.com/docs/en/build-with-claude/effort) | Control how many tokens Claude uses when responding with the effort parameter, trading off between response thoroughness and token efficiency. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
49| [Fallback credit](https://platform.claude.com/docs/en/build-with-claude/fallback-credit) | Avoid paying the prompt-cache cost twice when you retry a refused request on another model. The refusal carries a credit token, and echoing it on the retry bills the retry as though the conversation had been on the new model all along. Message Batches results do not include fallback credit tokens. | Not ZDR eligible\* | <PlatformAvailability claudeApiBeta claudePlatformAwsBeta bedrockBeta vertexAiBeta azureAiBeta /> |
48| [Effort](https://platform.claude.com/docs/en/build-with-claude/effort) | Control how many tokens Claude uses when responding with the `effort` parameter, trading off between response thoroughness and token efficiency. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
49| [Fallback credit](https://platform.claude.com/docs/en/build-with-claude/fallback-credit) | Avoid paying the prompt-cache cost twice when you retry a refused request on another model. The refusal carries a credit token, and echoing it on the retry bills the retry as though the conversation had been on the new model from the start. Message Batches results do not include fallback credit tokens. | Not ZDR eligible\* | <PlatformAvailability claudeApiBeta claudePlatformAwsBeta bedrockBeta vertexAiBeta azureAiBeta /> |
5050| [PDF support](https://platform.claude.com/docs/en/build-with-claude/pdf-support) | Process and analyze text and visual content from PDF documents. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
51| [Search results](https://platform.claude.com/docs/en/build-with-claude/search-results) | Enable natural citations for RAG applications by providing search results with proper source attribution. Achieve web search-quality citations for custom knowledge bases and tools. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
51| [Search results](https://platform.claude.com/docs/en/build-with-claude/search-results) | Get natural citations for RAG applications by providing search results with proper source attribution. Achieve web search-quality citations for custom knowledge bases and tools. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
5252| [Server-side fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback) | Retry a refused request inside a single API call. Use the `"default"` mode to apply Anthropic's recommended fallback models, or name up to three models of your own; when the requested model declines, the API runs the next model in the chain on the same request. The `fallbacks` parameter is not available in the Message Batches API. | Not ZDR eligible\* | <PlatformAvailability claudeApiBeta /> |
5353| [Structured outputs](https://platform.claude.com/docs/en/build-with-claude/structured-outputs) | Guarantee schema conformance with two approaches: JSON outputs for structured data responses, and strict tool use for validated tool inputs. | [ZDR eligible (qualified)](https://platform.claude.com/docs/en/build-with-claude/structured-outputs#data-retention)\* | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
5454| [Thinking](https://platform.claude.com/docs/en/build-with-claude/thinking) | Enhanced reasoning capabilities for complex tasks, with an optional summary of Claude's reasoning before its final answer. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
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5555 
5656## Tools
5757 
58Built-in tools that Claude invokes through `tool_use`. Server-side tools are run by the platform; client-side tools are implemented and executed by you.
58Built-in tools that Claude calls through `tool_use`. Server-side tools are run by the platform; client-side tools are implemented and run by you.
5959 
6060### Server-side tools
6161 
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6363| --------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------- | --------------------------------------------------------------------- |
6464| [Advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool) | Pair a faster executor model with a higher-intelligence advisor model that provides strategic guidance mid-generation for long-horizon agentic workloads. | ZDR eligible | <PlatformAvailability claudeApiBeta claudePlatformAwsBeta /> |
6565| [Code execution](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) | Run code in a sandboxed environment for advanced data analysis, calculations, and file processing. Free when used with web search or web fetch. | Not ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws azureAi />† |
66| [Web fetch](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool) | Retrieve full content from specified web pages and PDF documents for in-depth analysis. | ZDR eligible\* | <PlatformAvailability claudeApi claudePlatformAws azureAi /> |
66| [Web fetch](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool) | Retrieve full content from specified webpages and PDF documents for in-depth analysis. | ZDR eligible\* | <PlatformAvailability claudeApi claudePlatformAws azureAi /> |
6767| [Web search](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool) | Augment Claude's comprehensive knowledge with current, real-world data from across the web. | ZDR eligible\* | <PlatformAvailability claudeApi claudePlatformAws vertexAi azureAi /> |
6868 
6969### Client-side tools
7070 
71| Feature | Description | ZDR | Availability |
72| ----------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------ | ----------------------------------------------------------------------------------------- |
73| [Bash](https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool) | Execute bash commands and scripts to interact with the system shell and perform command-line operations. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
74| [Browser use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) | Navigate, read, and interact with webpages in your own browser environment. | ZDR eligible | <PlatformAvailability claudeApi vertexAi /> |
75| [Computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) | Control computer interfaces by taking screenshots and issuing mouse and keyboard commands. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAwsBeta bedrockBeta vertexAi azureAiBeta /> |
76| [Memory](https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool) | Enable Claude to store and retrieve information across conversations. Build knowledge bases over time, maintain project context, and learn from past interactions. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
77| [Text editor](https://platform.claude.com/docs/en/agents-and-tools/tool-use/text-editor-tool) | Create and edit text files with a built-in text editor interface for file manipulation tasks. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
71| Feature | Description | ZDR | Availability |
72| ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | ----------------------------------------------------------------------------------------- |
73| [Bash](https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool) | Run bash commands and scripts to interact with the system shell and perform command-line operations. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
74| [Browser use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) | Navigate, read, and interact with webpages in your own browser environment. | ZDR eligible | <PlatformAvailability claudeApi vertexAi /> |
75| [Computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) | Control computer interfaces by taking screenshots and issuing mouse and keyboard commands. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAwsBeta bedrockBeta vertexAi azureAiBeta /> |
76| [Memory](https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool) | Allow Claude to store and retrieve information across conversations. Build knowledge bases over time, maintain project context, and learn from past interactions. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
77| [Text editor](https://platform.claude.com/docs/en/agents-and-tools/tool-use/text-editor-tool) | Create and edit text files with a built-in text editor interface for file manipulation tasks. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
7878 
7979## Tool infrastructure
8080 
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8686| [Fine-grained tool streaming](https://platform.claude.com/docs/en/agents-and-tools/tool-use/fine-grained-tool-streaming) | Stream tool use parameters without buffering/JSON validation, reducing latency for receiving large parameters. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
8787| [MCP connector](https://platform.claude.com/docs/en/agents-and-tools/mcp-connector) | Connect to remote [MCP](https://modelcontextprotocol.io/) servers directly from the Messages API without a separate MCP client. | Not ZDR eligible | <PlatformAvailability claudeApiBeta claudePlatformAwsBeta azureAiBeta /> |
8888| [Programmatic tool calling](https://platform.claude.com/docs/en/agents-and-tools/tool-use/programmatic-tool-calling) | Enable Claude to call your tools programmatically from within code execution containers, reducing latency and token consumption for multi-tool workflows. | Not ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws azureAi />† |
89| [Tool search](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool) | Scale to thousands of tools by dynamically discovering and loading tools on-demand using regex- and BM25-based search, optimizing context usage and improving tool selection accuracy. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
89| [Tool search](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool) | Scale to thousands of tools by dynamically discovering and loading tools on demand using regex- and BM25-based search, optimizing context usage and improving tool selection accuracy. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
9090 
9191## Context management
9292 
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9898| [Context editing](https://platform.claude.com/docs/en/build-with-claude/context-editing) | Automatically manage conversation context with configurable strategies. Supports clearing tool results when approaching token limits and managing thinking blocks in extended thinking conversations. | ZDR eligible | <PlatformAvailability claudeApiBeta claudePlatformAwsBeta bedrockBeta vertexAiBeta azureAiBeta /> |
9999| [Automatic prompt caching](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#automatic-caching) | Simplify prompt caching to a single API parameter. The system automatically caches the last cacheable block in your request, moving the cache point forward as conversations grow. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
100100| [Prompt caching (5m)](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | Provide Claude with more background knowledge and example outputs to reduce costs and latency. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
101| [Prompt caching (1hr)](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#1-hour-cache-duration) | Extended 1-hour cache duration for less frequently accessed but important context, complementing the standard 5-minute cache. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
102| [Token counting](https://platform.claude.com/docs/en/build-with-claude/token-counting) | Token counting enables you to determine the number of tokens in a message before sending it to Claude, helping you make informed decisions about your prompts and usage. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
101| [Prompt caching (1h)](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#1-hour-cache-duration) | Extended 1-hour cache duration for less frequently accessed but important context, complementing the standard 5-minute cache. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
102| [Token counting](https://platform.claude.com/docs/en/build-with-claude/token-counting) | Token counting allows you to determine the number of tokens in a message before sending it to Claude, helping you make informed decisions about your prompts and usage. | ZDR eligible | <PlatformAvailability claudeApi claudePlatformAws bedrock vertexAi azureAi /> |
103103 
104104## Files and assets
105105 
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