Changes on 2026-02-18

1. **Analyze the Request:** * **Role:** World-class programmer/developer tool expert. * **Task:** Analyze documentation changes (single batch, 1 page changed). * **Input:** Diff for `monitoring-usage.md`. * **Output Format:** Markdown, Chinese response. Specific sections: Overall Summary, Key Themes, Impact Level, Action Items. 2. **Analyze the Diff:** * **File:** `monitoring-usage.md`. * **Location:** A table describing "standard attributes" for metrics and events. * **Changes:** * `session.id`: Description unchanged. * `app.version`: Description unchanged. * `organization.id`: Description unchanged (minor whitespace/formatting). * `user.account_uuid`: Description unchanged. * `user.id`: Description changed from "Anonymous user identifier" to "Anonymous device/installation identifier, generated per Claude Code installation". This is a semantic clarification. It defines *what* the anonymous ID represents (specifically a device/installation ID, not just a generic user ID). * `user.email`: Description unchanged. * `terminal.type`: Description changed slightly (mostly formatting/spelling, but checking the content: "such as `iTerm.app`, `vscode`, `cursor`, or `tmux`" - looks the same, just spacing changes). 3. **Synthesize the Findings:** * **What changed?** The description of the `user.id` attribute was clarified to explicitly state it is a "device/installation identifier" specific to each Claude Code installation. Other changes are mostly whitespace/formatting adjustments to the table. * **Why it matters?** Developers using telemetry/metrics need to understand the granularity of `user.id`. Knowing it's a device-specific UUID rather than a generic persistent user identifier helps in tracking distinct machines vs. distinct people (especially for unauthenticated usage). 4. **Draft the Response (Internal Monologue/Drafting in Chinese):** * *Overall Summary:* 本次更新主要修正了 `monitoring-usage.md` 中关于标准属性的表格。核心变化是对 `user.id` 属性描述的澄清，明确了其为“匿名设备/安装标识符”。 * *Key Themes:* * 语义澄清: 明确 `user.id` 的具体生成机制和作用范围（设备级/安装级）。 * 文档格式化: 表格列宽和空格的微调，主要是为了排版更清晰。 * *Impact Level:* Low. This is a documentation clarification, not a code change or API break. It doesn't affect how the code runs, only how developers interpret the data. * *Action Items:* * 如果你在分析遥测数据，请注意 `user.id` 代表的是具体的设备安装实例，而非跨设备的用户。 * 无需代码修改。 5. **Refine the Response (Applying "World-class Programmer" Tone):** * *Summary:* 本次文档更新主要优化了监控使用表格的描述，重点澄清了 `user.id` 的定义，明确其为基于 Claude Code 安装实例生成的匿名设备标识符。 * *Themes:* * **数据透明度**: 明确了匿名用户标识符 (`user.id`) 的生成粒度为“设备/安装”级别，有助于开发者更准确地理解数据的追踪维度。 * **排版优化**: 微调了表格列宽，提升了可读性。 * *Impact:* **Low**. 此为纯文本描述的修正，未涉及 API 变更或行为改变。 * *Action Items:* * 在分析遥测数据时，请基于新定义理解 `user.id`：它主要用于识别不同的安装实例，而非跨平台追踪同一自然人。 * 无需修改代码或配置。 6. **Final Polish:** Check against constraints. * Markdown format? Yes. * Chinese? Yes. * Concise? Yes. * Focus on what matters? Yes (clarifying the ID nature). 7. **Final Output Generation** (matches the thought process above).

1. **Analyze the Request:** * **Role:** World-class programmer analyzing documentation changes. * **Task:** Analyze a single batch of 26 documentation changes (though the prompt only provides diffs for a subset of pages, I need to look at what's provided). *Correction*: The prompt lists "Total changed pages: 26", but only provides diffs for about 17 specific pages. I must base my analysis *only* on the diffs provided. * **Format:** Markdown. * **Style:** Concise, insightful, developer-focused. * **Language:** Chinese. * **Output Structure:** 1. Overall Summary (1-2 sentences). 2. Key Themes (bullets). 3. Impact Level (Low/Medium/High/Breaking) + Reasoning. 4. Action Items (bullets, max 5). 2. **Analyze the Diffs (Page by Page):** * **model-config.md:** Clarifies 1M context window billing. It's in beta. Billing changes only after 200k tokens for subscribers. Removes generic pricing link, adds specific billing explanation. * **about-claude/models/overview.md:** Tone changes ("we recommend" -> "consider"). API naming changes ("Anthropic API" -> "Claude API"). General polishing of phrasing (e.g., "Our most intelligent" -> "The most intelligent"). "Legacy" models section text slightly less aggressive. * **about-claude/models/migrating-to-claude-4.md:** Tone changes ("We strongly encourage" -> "Consider"). Migration advice for Sonnet 4.5 -> 4.6 regarding `effort` parameter. Clarifies `output_format` to `output_config.format` migration. * **about-claude/model-deprecations.md:** Significant tone shift from active voice "we" to passive/neutral voice (e.g., "we notify" -> "Anthropic notifies"). Removes "we urge you" -> "Move workloads". * **api/messages-stream.md:** "Our SDKs" -> "The SDKs". "We may occasionally" -> "The API may occasionally". "Our current models" -> "Current models". Tone is more neutral. * **api/rate-limits.md:** "we have implemented" -> "limits are in place". "We enforce" -> "The API enforces". *Technical change*: Clarifies OTPM (Output Tokens Per Minute) limits. Previously estimated based on `max_tokens`, now evaluated in **real-time** based on actual tokens generated. Setting high `max_tokens` no longer hurts rate limits. * **api/service-tiers.md:** Minor phrasing updates ("Multipliers stack —" -> "Multipliers stack:"). * **api/errors.md:** "Our API follows" -> "The API follows". "We may also use" -> "This error type may also be used". *Technical change*: Long requests warning toned down ("We highly encourage" -> "Consider"). * **build-with-claude/text-generation.md:** "our collection" -> "the collection". "we've got you covered" -> "these resources can help". "our API" -> "the API". * **build-with-claude/extended-thinking.md:** "we recommend" -> "use". "We're continuously working" -> "Anthropic is continuously working". "We suggest" -> "always". Beta header status updates (deprecation notes). * **build-with-claude/streaming.md:** Similar to `api/messages-stream.md`. "Our SDKs" -> "The SDKs". * **build-with-claude/citations.md:** "we parse" -> "citations are parsed". "we found" -> "In evaluations... was found". "We support" -> "Three document types are supported". "we've added" -> "is included". * **build-with-claude/structured-outputs.md:** **Major Code Changes**. * Go, Ruby, C# code examples updated to remove Beta (`client.Beta.Messages`) and use standard (`client.Messages`). * `output_format` replaced by `output_config.format`. * Schema structure changed slightly in examples. * Error section updated: Instead of specific "Too many recursive definitions" errors, it now describes explicit limits (20 strict tools, 24 optional params, 16 union types) and internal grammar limits. * **build-with-claude/effort.md:** Tone changes ("We recommend" -> "Explicitly set"). Phrasing tweaks. * **build-with-claude/working-with-messages.md:** "We support" -> "Both ... are supported". "See our guide" -> "See the ... guide". * **build-with-claude/prompt-engineering/*:** Tone shifts (passive voice, removing "we"). * **agents-and-tools/tool-use/*:** Tone shifts. `web-search-tool` and `web-fetch-tool`: **Code Changes**. * Removes `beta` header requirement (`code-execution-web-tools-2026-02-09`) from the request examples. * Moves from `client.beta.messages` to `client.messages`. * **agents-and-tools/tool-use/computer-use-tool.md:** * Beta header `computer-use-2025-11-24` now supports Claude Sonnet 4.6 (previously Opus 4.6/4.5 only). * Tone changes ("We've trained" -> "The model has been trained"). 3. **Synthesize Findings:** * **Theme 1: Depersonalization/Tone Shift.** Massive effort to remove first-person plural ("we", "our") from docs, replacing with neutral voice ("The API", "Anthropic", passive voice). * **Theme 2: Beta Features Moving to GA.** * Structured Outputs: `output_format` -> `output_config.format`, Beta namespace removal in SDKs. * Web Search/Fetch: `code-execution-web-tools` beta header removed (GA). * Fine-grained tool streaming mentioned as GA in migration guide. * **Theme 3: Technical Clarifications.** * Rate Limits: OTPM is now real-time, not pre-estimated. * 1M Context Window: Billing clarification for subscribers. * Computer Use: `computer-use-2025-11-24` now supports Sonnet 4.6. * Structured Outputs: New explicit complexity limits (tools, optional params, unions). 4. **Draft the Content (in Chinese):** * *Summary:* 主要是文档语气的去个人化（去除 "we"），以及几个 Beta 功能正式转正带来的 API 调整。同时明确了结构化输出的限制条件和速率限制的实时计算方式。 * *Themes:* * 语气去个人化：大规模移除 "we/our"，改用被动语态或指代 "The API/Anthropic"。 * 功能转正（GA）：结构化输出、Web 搜索/抓取工具不再需要 Beta headers；参数从 `output_format` 变更为 `output_config.format`。 * API 行为变更：速率限制（OTPM）改为实时计算，不再基于 `max_tokens` 预估；Computer Use 新版 beta 头支持 Sonnet 4.6。 * 限制与规范：明确结构化输出的复杂度限制（工具数量、可选参数等）。 * *Impact:* **Medium**. * *Reasoning:* 语气变化不影响代码。但 Structured Outputs (`output_config.format`) 和移除 Beta headers 是破坏性变更（虽然功能转正了）。速率限制计算方式的变化对有大量并发需求的开发者有正面影响。 * *Action Items:* * 更新代码：将 `output_format` 替换为 `output_config.format`，移除 Structured Outputs 相关的 Beta headers。 * 更新代码：移除 Web Search/Fetch 工具的 `code-execution-web-tools` beta header。 * 利用速率限制：可以放心设置更高的 `max_tokens` 而不消耗额外的 OTPM 配额。 * 检查结构化输出：确保 schema 不超过新的复杂度限制（20个 strict tools，24个可选参数等）。 5. **Refine Language (Chinese):** * *Tone Check:* Professional, concise. * *Structuring:* Ensure headers match the request. *Self-Correction during drafting:* The prompt asks for "Total changed pages: 26" but I only have diffs for ~17. I should focus on the content of the diffs. The tone change is ubiquitous. The API changes are specific to Structured Outputs and Web tools. *Action Item refinement:* Be specific about `output_format` -> `output_config.format`. That's a big one for devs using structured outputs. 6. **Final Output Generation:** (Proceeding to generate markdown).

1. **Understand the Goal**: The user wants a world-class programmer's analysis of documentation changes. The output must be in Chinese, concise, insightful, and in markdown format. It needs to cover three pages: `hooks.md`, `monitoring-usage.md`, and `settings.md`. 2. **Analyze Page 1: `hooks.md`**: * **Change**: Added `last_assistant_message` to the input fields for `SubagentStop` and `Stop` hooks. * **Context**: These hooks previously required developers to parse the transcript file to get the final message. * **Impact**: This is a developer experience (DX) improvement. It simplifies hook logic by providing the final text directly in the payload. * **Specifics**: * `SubagentStop` input gets `last_assistant_message`. * `Stop` input gets `last_assistant_message`. * **Why it matters**: Reduces file I/O and parsing logic in custom hook scripts. 3. **Analyze Page 2: `monitoring-usage.md`**: * **Change**: Significant rewording and table restructuring. The user provided diff shows a large block of additions (+64 / -46). * **Intro**: Shifted from "Claude Code supports..." to "Track Claude Code usage...". More action-oriented. * **Quick Start**: Changed example URLs from `company.com` to `example.com` (genericization). * **Table**: The table of environment variables was reformatted. Descriptions were tweaked for clarity (e.g., "overrides general setting" vs "(overrides general)"). * **Why it matters**: Better clarity on configuration, mostly a documentation polish. No functional change to the software itself, just clearer instructions on how to set up OTel. 4. **Analyze Page 3: `settings.md`**: * **Change**: Added `spinnerTipsOverride` setting. * **Context**: Allows customizing tips shown in the spinner. * **Specifics**: Supports a config object with `tips` (array) and `excludeDefault` (boolean). * **Why it matters**: Allows organizations to display internal tips or specific guidance to developers using the tool. 5. **Synthesize Overall Themes**: * **Developer Experience (DX) Optimization**: Simplifying data access (hooks) and UI customization (settings). * **Observability/Clarity**: Polishing telemetry docs for better setup guidance. 6. **Determine Impact Level**: * Is it Breaking? No. * Is it High? No major architectural shifts. * Is it Medium? The hooks change is a useful additive feature. The settings change is additive. The monitoring doc change is cosmetic/helpful. * **Verdict**: Low to Medium. I'll lean towards "Low" because existing code continues to work, and the new features are enhancements/additions, not mandatory migrations. However, for people writing hooks, this is a "Medium" quality-of-life improvement. Let's stick to **Low** generally, or **Low-Medium** if strictly asked for levels, but usually, additive API changes without deprecation are Low/Medium. I will select **Low** as it's purely additive and documentation polish. 7. **Draft Action Items**: * Update hook scripts to use `last_assistant_message` instead of parsing transcripts (optional optimization). * Configure `spinnerTipsOverride` for custom internal guidance. * Review OTel config docs if setting up monitoring (mostly for clarity). 8. **Draft Response (in Chinese)**: * **Summary**: This update focuses on improving developer experience by simplifying data access in hooks and adding UI customization options, alongside clarifying telemetry documentation. * Chinese: 本次更新主要聚焦于提升开发者体验，包括简化 Hook 数据访问、新增 UI 自定义选项以及优化遥测文档的清晰度。 * **Key Themes**: * **Simplified Hook Data Access**: Added `last_assistant_message` to `Stop` and `SubagentStop` hooks, eliminating the need to parse transcript files manually. * **Enhanced UI Customization**: Introduced `spinnerTipsOverride` to allow custom spinner tips for team alignment or internal guidance. * **Documentation Polish**: Refined OpenTelemetry configuration instructions for better clarity and readability. * Chinese: * **简化 Hook 数据访问**：为 `Stop` 和 `SubagentStop` hooks 新增了 `last_assistant_message` 字段，无需手动解析 transcript 文件即可获取最终回复内容。 * **增强 UI 定制能力**：新增 `spinnerTipsOverride` 设置，允许团队自定义提示信息或展示内部指南。 * **文档优化**：改进了 OpenTelemetry 配置说明，提升了可读性和准确性。 * **Impact Level**: Low. * Reasoning: These are purely additive changes. Existing implementations will continue to function without modification. * Chinese: **低**。所有更改均为新增功能或文档优化，不会破坏现有代码。 * **Action Items**: * Refactor custom `Stop` hooks to use `last_assistant_message` for cleaner code. * Implement `spinnerTipsOverride` in your team config to display internal best practices. * Review the updated `monitoring-usage.md` if you are setting up OTel for the first time. * Chinese: * **优化 Hook 逻辑**：更新自定义 `Stop` 和 `SubagentStop` 钩子，利用新增的 `last_assistant_message` 字段替代文件解析逻辑，以简化代码。 * **配置自定义提示**：在团队配置中设置 `spinnerTipsOverride`，向开发者展示内部工具使用技巧或最佳实践。 * **查阅遥测文档**：如果您正在配置 OpenTelemetry，建议查阅更新后的 `monitoring-usage.md` 以获取更清晰的配置指引。 9. **Review and Refine**: The tone should be professional and insightful. The translation needs to be natural "programmer" Chinese. * "SubagentStop" -> "SubagentStop 钩子" (keep the English term for clarity). * "transcript" -> "transcript 文件" or "对话记录". * "spinner" -> "加载提示" or "Spinner". Looks good. Proceed with generating the output.

1. **Analyze the Request**: * **Role**: World-class programmer analyzing documentation changes. * **Output Format**: Markdown. * **Language**: Chinese (as requested in the first prompt). * **Content**: Analyze a batch of 10 documentation pages with diffs. * **Requirements**: Overall summary, key themes, impact level with reasoning, action items (max 5). 2. **Analyze the Diffs (Page by Page)**: * **`amazon-bedrock.md`**: * *Change*: Added a strong warning (`<Warning>`) about pinning model versions (Opus, Sonnet, Haiku) to prevent breakage when new models are released. It explicitly advises setting specific model IDs (e.g., `us.anthropic.claude-sonnet-4-6`) instead of aliases. * *Reasoning*: If a new model comes out, aliases (`sonnet`, `opus`) might point to it, but if a Bedrock account hasn't enabled the new version yet, the app breaks for existing users. * *Change*: Consolidated some notes about model configuration. * *Change*: Changed "We recommend..." to "Create a dedicated AWS account..." (stronger tone). * **`common-workflows.md`**: * *Change*: Removed mention of "Delegate Mode" from the cycle description when pressing `Shift+Tab` in a normal session. * *Context*: Implies "Delegate Mode" might be deprecated or moved. * **`desktop.md`**: * *Change*: Removed mention of `delegate` permission mode being available only in CLI (implies it might be gone or significantly changed). * *Change*: Updated the feature comparison table. * *Change*: Removed "Agent teams and `delegate` mode" from the "Key differences" section, stating they are only in CLI/SDK. * *Implication*: This looks like a removal of "Delegate Mode" functionality. * **`google-vertex-ai.md`**: * *Change*: Similar to Bedrock - Added warning about pinning model versions to prevent breakage. * *Change*: Combined notes about prompt caching and `/login`. * *Change*: Added specific environment variable examples for pinning. * **`interactive-mode.md`**: * *Change*: Updated the "General controls" table. * *Specific*: Removed the phrase "When an [agent team](/en/agent-teams) is active, the cycle also includes Delegate Mode" from the `Shift+Tab` description. Confirms the removal/deprecation of Delegate Mode. * **`microsoft-foundry.md`**: * *Change*: Added warning about pinning model versions (same pattern as Bedrock and Vertex). * *Change*: Specific advice to select specific model versions in Azure deployments, not "auto-update to latest". * **`model-config.md`**: * *Change*: Updated "Extended context" section. Now explicitly mentions Opus 4.6 and Sonnet 4.6 support 1M context. Clarified that subscription users need "extra usage" enabled for tokens beyond 200k. * *Change*: Added a new section "Pin models for third-party deployments". Strong warning about setting `ANTHROPIC_DEFAULT_OPUS_MODEL`, `SONNET`, `HAIKU` to specific versions. * **`sub-agents.md`**: * *Change*: Removed `delegate` from the list of allowed `permissionMode` options in the configuration table and explanation. * *Implication*: Definitive evidence that `delegate` permission mode is being removed or deprecated. * **`third-party-integrations.md`**: * *Change*: Added a section "Pin model versions for cloud providers" pointing to the model-config page. * **`CHANGELOG.md.md`** (v2.1.47): * *Note*: This is a huge list of fixes. * *Relevance*: No major breaking changes mentioned in the summary text, but lots of bug fixes (Windows line endings, memory usage, `ctrl+f` killing agents, etc.). * *Note*: It doesn't explicitly mention the removal of `delegate` mode or the pinning changes, but the docs reflect the current state of the software. 3. **Synthesize Key Themes**: * **Theme 1: Model Version Pinning for Stability**. Across Bedrock, Vertex, Foundry, and Model Config pages, there is a massive push to force users to pin specific model IDs (e.g., `claude-sonnet-4-6`) rather than using aliases (`sonnet`). This prevents breakage when Anthropic releases new models that haven't been whitelisted in the third-party provider accounts yet. * **Theme 2: Deprecation/Removal of "Delegate Mode"**. Several pages (`desktop.md`, `interactive-mode.md`, `sub-agents.md`, `common-workflows.md`) have scrubbed references to `delegate` permission mode and its associated agent team cycling. This appears to be a feature removal. * **Theme 3: Extended Context Clarification**. Updates on 1M context availability for Opus/Sonnet 4.6 and billing details for subscription users. 4. **Determine Impact Level**: * **Level**: High / Breaking (for specific configurations). * **Reasoning**: * **Pinning**: If you don't pin models, your third-party deployment (Bedrock/Vertex/Foundry) *will break* when a new model drops. This is a critical operational change for DevOps/Platform engineers managing these deployments. * **Delegate Mode**: If users rely on the `delegate` permission mode in their sub-agent configurations or CLI workflows, their configs are now invalid/outdated. 5. **Draft Action Items**: 1. **Action**: Update environment variables for Bedrock/Vertex/Foundry deployments to use specific model IDs (e.g., `ANTHROPIC_DEFAULT_SONNET_MODEL='us.anthropic.claude-sonnet-4-6'`) instead of aliases. 2. **Action**: Review and remove `permissionMode: "delegate"` from any existing `.claude/agents/*.md` configurations or settings files. 3. **Action**: Update deployment scripts/documentation for internal users to reflect the new requirement for model pinning to prevent runtime breakage. 4. **Action**: For Teams/Enterprise users on the new 4.6 models, ensure "extra usage" is enabled if they rely on the 1M token context window beyond the 200k limit. 5. **Action**: Note the change in `Shift+Tab` behavior (no longer cycles through Delegate mode). 6. **Translate to Chinese and Format**: * *Summary*: 此次更新主要集中在增强第三方云平台（AWS Bedrock、Google Vertex、Microsoft Foundry）部署的稳定性，并移除了 `delegate` 委托模式。文档明确要求“锁定”模型版本以防止自动更新导致的服务中断。 * *Themes*: 第三方部署的模型版本锁定、移除 Delegate 模式、1M 上下文窗口的计费说明更新。 * *Impact*: High/Breaking. * *Actions*: Pin models, remove delegate configs, check billing for 1M context. 7. **Refine**: * Ensure the tone is professional and concise. * Check the specific model IDs mentioned in the diff (e.g., `us.anthropic.claude-sonnet-4-6`). * Confirm `delegate` mode removal is consistent across docs. 8. **Final Output Generation**: (Matches the provided Chinese response structure).