One read of Claude Developer Platformapi-20261031T010031Z
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01:00 UTC
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1-25 of 45, page 1 of 2This capture is too large to show at once. Changes 1-25 of 45 are below, significant first; the rest are on the following screens.
agents-and-tools/agent-skills/overview Changed · +5 / -5 lines
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33url: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview
44description: Agent Skills are modular capabilities that extend Claude's functionality. Each Skill packages instructions, metadata, and optional resources (scripts, templates) that Claude uses automatically when relevant.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: not-eligible
99 note: Skill data retained according to standard policy.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
3232 Microsoft Foundry (hosted on Anthropic):
33 availability: ga
33 availability: stable
3434 note: Hosted on Anthropic deployments only; the skill version download endpoint (`GET /v1/skills/{skill_id}/versions/{version}/content`) is not supported on Foundry.
3535---
3636
agents-and-tools/tool-use/bash-tool Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool
44description: Let Claude request shell commands that your application runs in a persistent bash session and returns as tool results.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Client-side tool run in your environment.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737The bash tool is a [client tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/how-tool-use-works): Claude doesn’t run commands itself. When you include the tool in a request, Claude replies with a `tool_use` block that names the command to run. Your application runs that command in a bash session it owns and returns the output in a `tool_result` block.
agents-and-tools/tool-use/browser-use-tool Changed · +3 / -3 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool
44description: Let Claude navigate, read, and interact with webpages in your own browser environment with the browser use tool.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Client-side tool. Anthropic does not run browser actions or retain page content beyond standard API handling.
from line 20
2020 - claude-haiku-5-5
2121 - claude-opus-4-8
2222 supportedPlatforms:
23 Claude API: ga
24 Claude Models on Google Cloud (Google managed): ga
23 Claude API: stable
24 Claude Models on Google Cloud (Google managed): stable
2525---
2626
2727<Note>
agents-and-tools/tool-use/code-execution-tool Changed · +5 / -5 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool
44description: Run Python and Bash code in a sandboxed container to analyze data, generate files, and iterate on solutions.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: not-eligible
99 note: Container data retained up to 30 days.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
32 Microsoft Foundry (hosted on Anthropic): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
32 Microsoft Foundry (hosted on Anthropic): stable
3333 details:
3434 - Every supported model accepts all three [tool versions](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool#tool-versions). On Claude Haiku 4.5, programmatic tool calling and REPL state persistence aren't available, so the newer versions behave like `code_execution_20250825` there.
3535---
agents-and-tools/tool-use/define-tools Changed · +8 / -8 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools
44description: Specify tool schemas, write effective descriptions, and control when Claude calls your tools.
55featureMetadata:
6 status: ga
6 status: stable
77 supportedModels:
88 - claude-fable-5-1
99 - claude-mythos-5-1
from line 23
2323 - claude-opus-4-5-20251101
2424 - claude-sonnet-4-5-20250929
2525 supportedPlatforms:
26 Claude API: ga
27 Claude Platform on AWS: ga
28 Claude Models on Google Cloud (Anthropic managed): ga
29 Amazon Bedrock: ga
30 Amazon Bedrock (InvokeModel): ga
31 Claude Models on Google Cloud (Google managed): ga
32 Microsoft Foundry: ga
26 Claude API: stable
27 Claude Platform on AWS: stable
28 Claude Models on Google Cloud (Anthropic managed): stable
29 Amazon Bedrock: stable
30 Amazon Bedrock (InvokeModel): stable
31 Claude Models on Google Cloud (Google managed): stable
32 Microsoft Foundry: stable
3333---
3434
3535**API support**: Usage differs by product.
agents-and-tools/tool-use/fine-grained-tool-streaming Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/fine-grained-tool-streaming
44description: Stream tool inputs without server-side JSON buffering for latency-sensitive applications.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements).
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737Fine-grained tool streaming delivers a tool’s input to your client as Claude generates it, without server-side buffering or JSON validation. Skipping the buffering step reduces the time to the first fragment of a large parameter, such as a document or a block of code, and the fragments arrive through the same [Streaming messages](https://platform.claude.com/docs/en/build-with-claude/streaming) events as standard tool use.
agents-and-tools/tool-use/memory-tool Changed · +8 / -8 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool
44description: Let Claude store and retrieve information across conversations by implementing the memory tool's file operations in your application.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Client-side memory storage where you control data retention.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
32 Amazon Bedrock: ga
33 Amazon Bedrock (InvokeModel): ga
34 Claude Models on Google Cloud (Google managed): ga
35 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
32 Amazon Bedrock: stable
33 Amazon Bedrock (InvokeModel): stable
34 Claude Models on Google Cloud (Google managed): stable
35 Microsoft Foundry: stable
3636---
3737
3838The memory tool lets Claude store and retrieve information across conversations in a directory of memory files. Claude can create, read, update, and delete files that persist between sessions, building up knowledge over time without keeping everything in the context window.
agents-and-tools/tool-use/parallel-tool-use Changed · +6 / -6 lines
from line 22
2222 - claude-opus-4-5-20251101
2323 - claude-sonnet-4-5-20250929
2424 supportedPlatforms:
25 Claude API: ga
26 Claude Platform on AWS: ga
27 Amazon Bedrock: ga
28 Amazon Bedrock (InvokeModel): ga
29 Claude Models on Google Cloud (Google managed): ga
30 Microsoft Foundry: ga
25 Claude API: stable
26 Claude Platform on AWS: stable
27 Amazon Bedrock: stable
28 Amazon Bedrock (InvokeModel): stable
29 Claude Models on Google Cloud (Google managed): stable
30 Microsoft Foundry: stable
3131---
3232
3333By default, Claude may call multiple tools in a single response. This page covers how to run those calls, how to format the message history so parallelism keeps working, and how to disable parallel tool use when you need to. For the single-call flow, see [Handle tool calls](https://platform.claude.com/docs/en/agents-and-tools/tool-use/handle-tool-calls).
agents-and-tools/tool-use/programmatic-tool-calling Changed · +4 / -4 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/programmatic-tool-calling
44description: Let Claude call your tools from code in the code execution container, cutting model round trips and token use in multi-tool workflows.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: not-eligible
99 note: Built on code execution containers; data retained up to 30 days.
from line 25
2525 - claude-opus-4-5-20251101
2626 - claude-sonnet-4-5-20250929
2727 supportedPlatforms:
28 Claude API: ga
29 Claude Platform on AWS: ga
30 Microsoft Foundry (hosted on Anthropic): ga
28 Claude API: stable
29 Claude Platform on AWS: stable
30 Microsoft Foundry (hosted on Anthropic): stable
3131 details:
3232 - Programmatic tool calling requires the code execution tool with the `code_execution_20260120` or later [tool version](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool#tool-versions).
3333---
agents-and-tools/tool-use/strict-tool-use Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/strict-tool-use
44description: Enforce JSON Schema compliance on Claude's tool inputs with grammar-constrained sampling.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: qualified
99 note: "Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Your prompts and Claude's outputs are not stored. Only the JSON schema is cached, for up to 24 hours since last use. This also covers strict tool use (`strict: true` on tools), which uses the same grammar pipeline."
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737Setting `strict: true` on a tool definition guarantees Claude’s tool inputs match your JSON Schema by constraining the model’s token sampling to schema-valid outputs (a technique called grammar-constrained sampling). This page covers why strict mode matters for agents, how to enable it, and common use cases. For the supported JSON Schema subset, see [JSON Schema limitations](https://platform.claude.com/docs/en/build-with-claude/structured-outputs#json-schema-limitations). For non-strict schema guidance, see [Define tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools).
agents-and-tools/tool-use/text-editor-tool Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/text-editor-tool
44description: Give Claude the Anthropic-defined text editor tool to view, create, and edit files, and handle its view, str_replace, create, and insert commands.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Client-side tool run in your environment.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737Claude can use an Anthropic-schema text editor tool to view and modify text files, helping you debug, fix, and improve your code or other text documents. This allows Claude to directly interact with your files, providing hands-on assistance rather than just suggesting changes.
agents-and-tools/tool-use/tool-search-tool Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool
44description: Scale to hundreds or thousands of tools by letting Claude search your tool catalog and load only the tools it needs.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Server-side tool run by Anthropic; the tool definitions in the request are searched in memory per call and nothing is stored after the response.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
3232 Amazon Bedrock (InvokeModel):
33 availability: ga
33 availability: stable
3434 note: On Amazon Bedrock it is not available through the Converse API.
35 Claude Models on Google Cloud (Google managed): ga
36 Microsoft Foundry: ga
35 Claude Models on Google Cloud (Google managed): stable
36 Microsoft Foundry: stable
3737---
3838
3939The tool search tool lets Claude work with hundreds or thousands of tools by discovering and loading them on demand. Instead of loading all tool definitions into the context window up front, Claude searches your tool catalog (including tool names, descriptions, argument names, and argument descriptions) and loads only the tools it needs.
agents-and-tools/tool-use/web-fetch-tool Changed · +5 / -5 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool
44description: Fetch and read content from specific URLs to augment Claude's context with live web content.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Fetched web content returned in the API response. Dynamic filtering for web fetch is not eligible for ZDR or HIPAA. Website publishers might retain request data (such as fetched URLs and request metadata) according to their own policies.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
3232 Microsoft Foundry:
33 availability: ga
33 availability: stable
3434 note: "Deployments hosted on Azure support only `web_fetch_20250910`: no dynamic filtering, response inclusion or cache bypass."
3535---
3636
agents-and-tools/tool-use/web-search-tool Changed · +6 / -6 lines
from line 3
33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool
44description: Give Claude access to current web content with cited sources, optional dynamic filtering, and domain controls.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Real-time web search results returned in the API response. Dynamic filtering for web search is not eligible for ZDR or HIPAA.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
3232 Claude Models on Google Cloud (Google managed):
33 availability: ga
33 availability: stable
3434 note: Only the basic web search tool (`web_search_20250305`), without dynamic filtering.
3535 Microsoft Foundry:
36 availability: ga
36 availability: stable
3737 note: Only the basic web search tool (`web_search_20250305`), without dynamic filtering.
3838---
3939
build-with-claude/batch-processing Changed · +4 / -4 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/batch-processing
44description: Process large volumes of Messages requests asynchronously with the Message Batches API, cutting costs by 50 percent and increasing throughput.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: not-eligible
99 note: 29-day retention; async storage required.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
3232---
3333
3434Batch processing is a powerful approach for handling large volumes of requests efficiently. Instead of processing requests one at a time with immediate responses, batch processing allows you to submit multiple requests together for asynchronous processing. This pattern is particularly useful when:
build-with-claude/citations Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/citations
44description: Ground Claude's responses in your source documents. Citations return the exact passages that support each claim, so you can verify answers and surface sources to your users.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements).
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737Claude can provide detailed citations when answering questions about documents, helping you track and verify the sources behind each response.
build-with-claude/effort Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/effort
44description: Control how many tokens Claude uses when responding with the effort parameter, trading off between response thoroughness and token efficiency.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements).
from line 24
2424 - claude-sonnet-4-6
2525 - claude-opus-4-5-20251101
2626 supportedPlatforms:
27 Claude API: ga
28 Claude Platform on AWS: ga
29 Amazon Bedrock: ga
30 Amazon Bedrock (InvokeModel): ga
31 Claude Models on Google Cloud (Google managed): ga
32 Microsoft Foundry: ga
27 Claude API: stable
28 Claude Platform on AWS: stable
29 Amazon Bedrock: stable
30 Amazon Bedrock (InvokeModel): stable
31 Claude Models on Google Cloud (Google managed): stable
32 Microsoft Foundry: stable
3333---
3434
3535**API support**: Usage differs by product.
build-with-claude/extended-thinking Changed · +7 / -7 lines
from line 11
1111 - claude-opus-4-5-20251101
1212 - claude-sonnet-4-5-20250929
1313 supportedPlatforms:
14 Claude API: ga
15 Claude Platform on AWS: ga
16 Claude Models on Google Cloud (Anthropic managed): ga
17 Amazon Bedrock: ga
18 Amazon Bedrock (InvokeModel): ga
19 Claude Models on Google Cloud (Google managed): ga
20 Microsoft Foundry: ga
14 Claude API: stable
15 Claude Platform on AWS: stable
16 Claude Models on Google Cloud (Anthropic managed): stable
17 Amazon Bedrock: stable
18 Amazon Bedrock (InvokeModel): stable
19 Claude Models on Google Cloud (Google managed): stable
20 Microsoft Foundry: stable
2121---
2222
2323<Warning>
build-with-claude/fast-mode Changed · +3 / -3 lines
from line 12
1212 - claude-opus-5
1313 - claude-opus-4-8
1414 supportedPlatforms:
15 Claude API: ga
16 Claude Models on Google Cloud (Anthropic managed): ga
17 Microsoft Foundry (hosted on Azure): ga
15 Claude API: stable
16 Claude Models on Google Cloud (Anthropic managed): stable
17 Microsoft Foundry (hosted on Azure): stable
1818 details:
1919 - Fast mode on Claude Opus 5 and Claude Opus 4.8 is in research preview and needs the `fast-mode-2026-02-01` beta header.
2020---
build-with-claude/files Changed · +5 / -5 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/files
44description: Upload files once, reference them by file_id in Messages requests, and download outputs created by skills or the code execution tool.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: not-eligible
99 note: Files retained until explicitly deleted or they reach their configured expiration.
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
32 Microsoft Foundry (hosted on Anthropic): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
32 Microsoft Foundry (hosted on Anthropic): stable
3333---
3434
3535**API support**: Usage differs by product.
build-with-claude/mid-conversation-system-messages Changed · +5 / -5 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages
44description: Change system instructions or tool availability partway through a conversation without invalidating the cached prefix that came before them.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Request-shape capability of the Messages API; mid-conversation system messages flow through the standard inference path and nothing is stored server-side after the response.
from line 19
1919 - claude-haiku-5-5
2020 - claude-opus-4-8
2121 supportedPlatforms:
22 Claude API: ga
23 Claude Platform on AWS: ga
24 Amazon Bedrock: ga
25 Claude Models on Google Cloud (Google managed): ga
22 Claude API: stable
23 Claude Platform on AWS: stable
24 Amazon Bedrock: stable
25 Claude Models on Google Cloud (Google managed): stable
2626---
2727
2828**API support**: Usage differs by product.
build-with-claude/multilingual-support Changed · +7 / -7 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/multilingual-support
44description: Claude excels at tasks across multiple languages, maintaining strong cross-lingual performance relative to English.
55featureMetadata:
6 status: ga
6 status: stable
77 supportedModels:
88 - claude-fable-5-1
99 - claude-mythos-5-1
from line 23
2323 - claude-opus-4-5-20251101
2424 - claude-sonnet-4-5-20250929
2525 supportedPlatforms:
26 Claude API: ga
27 Claude Platform on AWS: ga
28 Amazon Bedrock: ga
29 Amazon Bedrock (InvokeModel): ga
30 Claude Models on Google Cloud (Google managed): ga
31 Microsoft Foundry: ga
26 Claude API: stable
27 Claude Platform on AWS: stable
28 Amazon Bedrock: stable
29 Amazon Bedrock (InvokeModel): stable
30 Claude Models on Google Cloud (Google managed): stable
31 Microsoft Foundry: stable
3232---
3333
3434## Overview
build-with-claude/pdf-support Changed · +8 / -8 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/pdf-support
44description: "Process PDFs with Claude: extract text, analyze charts, and understand visual content from your documents."
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements).
from line 26
2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Claude Models on Google Cloud (Anthropic managed): ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Claude Models on Google Cloud (Anthropic managed): stable
3232 Amazon Bedrock:
33 availability: ga
33 availability: stable
3434 note: Base64 sources only.
3535 Amazon Bedrock (InvokeModel):
36 availability: ga
36 availability: stable
3737 note: Base64 sources only.
3838 Claude Models on Google Cloud (Google managed):
39 availability: ga
39 availability: stable
4040 note: Base64 sources only.
4141 Microsoft Foundry:
42 availability: ga
42 availability: stable
4343 note: "`file_id` sources need a Hosted on Anthropic deployment."
4444---
4545
build-with-claude/preserved-thinking Changed · +6 / -6 lines
from line 3
33url: https://platform.claude.com/docs/en/build-with-claude/preserved-thinking
44description: 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 before the block has changed.
55featureMetadata:
6 status: ga
6 status: stable
77 supportedModels:
88 - claude-fable-5-1
99 - claude-mythos-5-1
from line 11
1111 - claude-sonnet-5-5
1212 - claude-haiku-5-5
1313 supportedPlatforms:
14 Claude API: ga
15 Claude Platform on AWS: ga
16 Claude Models on Google Cloud (Anthropic managed): ga
17 Claude Models on Google Cloud (Google managed): ga
18 Microsoft Foundry: ga
14 Claude API: stable
15 Claude Platform on AWS: stable
16 Claude Models on Google Cloud (Anthropic managed): stable
17 Claude Models on Google Cloud (Google managed): stable
18 Microsoft Foundry: stable
1919---
2020
2121**API support**: Usage differs by product.
build-with-claude/prompt-caching Changed · +7 / -7 lines
from line 25
2525 - claude-opus-4-5-20251101
2626 - claude-sonnet-4-5-20250929
2727 supportedPlatforms:
28 Claude API: ga
29 Claude Platform on AWS: ga
30 Claude Models on Google Cloud (Anthropic managed): ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
28 Claude API: stable
29 Claude Platform on AWS: stable
30 Claude Models on Google Cloud (Anthropic managed): stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737**API support**: Usage differs by product.