# Claude Code v2.1.268: system prompt > 1 of 30 tool descriptions changed. Compared against v2.1.267. Web version: https://changelogs.core-directive.com/prompts/2.1.268?arm=cli&config=flags-anon ## What this version holds - model strings captured: 27 - tool descriptions: 30 - compared against: v2.1.267 - system prompt edits: 1 - widest system prompt edit: +0/-1 lines - tool descriptions changed: 1 ## What moved ### System prompt, reached 1 of 27 arms (+0/-1 lines) This edit reached 1 of 27 arms: sonnet[1m]. ```diff @@ from line 42 @@ # Using your tools - Prefer dedicated tools over Bash when one fits (Read, Edit, Write) — reserve Bash for shell-only operations. - - Use TaskCreate to plan and track work. Mark each task completed as soon as it's done; don't batch. - You can call multiple tools in a single response. If you intend to call multiple tools and there are no dependencies between them, make all independent tool calls in parallel. Maximize use of parallel tool calls where possible to increase efficiency. However, if some tool calls depend on previous calls to inform dependent values, do NOT call these tools in parallel and instead call them sequentially. For instance, if one operation must complete before another starts, run these operations sequentially instead. # Tone and style ``` ### Tool: WebFetch, reached 17 of 27 arms (+1/-0 lines) This edit reached 17 of 27 arms: claude-3-5-haiku, claude-3-5-sonnet, claude-3-7-sonnet, claude-3-opus, claude-haiku-4-5, claude-opus-4-5, claude-opus-4-6, claude-opus-4-7, claude-sonnet-4-0, claude-sonnet-4-5, claude-sonnet-4-6, claude-sonnet-5, claude-sonnet-5[1m], haiku, opusplan, sonnet, sonnet[1m]. ```diff @@ from line 11 @@ - IMPORTANT: If an MCP-provided web fetch tool is available, prefer using that tool instead of this one, as it may have fewer restrictions. - The URL must be a fully-formed valid URL - HTTP URLs will be automatically upgraded to HTTPS + - localhost and other hostnames without a dot are not supported; for a local server, use curl via Bash - The prompt should describe what information you want to extract from the page - This tool is read-only and does not modify any files - Results may be summarized if the content is very large ``` ### Tool: WebFetch, reached 10 of 27 arms (+1/-0 lines) This edit reached 10 of 27 arms: (unset), claude-fable-5, claude-mythos-5, claude-opus-4-0, claude-opus-4-1, claude-opus-4-8, claude-opus-5, claude-opus-5[1m], default, opus. ```diff @@ from line 1 @@ Fetches a URL, converts the page to markdown, and answers `prompt` against it using a small fast model. - Fails on authenticated/private URLs — use an authenticated MCP tool or `gh` for those instead. +- Fails on localhost and other hostnames without a dot; for a local server, use curl via Bash. - HTTP is upgraded to HTTPS. Cross-host redirects are returned to you rather than followed; call again with the redirect URL. - Responses are cached for 15 minutes per URL. ``` ## Tool descriptions - Agent: https://changelogs.core-directive.com/prompts/2.1.268/tools/Agent.txt?arm=cli&config=flags-anon - AskUserQuestion: https://changelogs.core-directive.com/prompts/2.1.268/tools/AskUserQuestion.txt?arm=cli&config=flags-anon - Bash: https://changelogs.core-directive.com/prompts/2.1.268/tools/Bash.txt?arm=cli&config=flags-anon - CronCreate: https://changelogs.core-directive.com/prompts/2.1.268/tools/CronCreate.txt?arm=cli&config=flags-anon - CronDelete: https://changelogs.core-directive.com/prompts/2.1.268/tools/CronDelete.txt?arm=cli&config=flags-anon - CronList: https://changelogs.core-directive.com/prompts/2.1.268/tools/CronList.txt?arm=cli&config=flags-anon - Edit: https://changelogs.core-directive.com/prompts/2.1.268/tools/Edit.txt?arm=cli&config=flags-anon - EnterPlanMode: https://changelogs.core-directive.com/prompts/2.1.268/tools/EnterPlanMode.txt?arm=cli&config=flags-anon - EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.268/tools/EnterWorktree.txt?arm=cli&config=flags-anon - ExitPlanMode: https://changelogs.core-directive.com/prompts/2.1.268/tools/ExitPlanMode.txt?arm=cli&config=flags-anon - ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.268/tools/ExitWorktree.txt?arm=cli&config=flags-anon - ListAgents: https://changelogs.core-directive.com/prompts/2.1.268/tools/ListAgents.txt?arm=cli&config=flags-anon - Monitor: https://changelogs.core-directive.com/prompts/2.1.268/tools/Monitor.txt?arm=cli&config=flags-anon - NotebookEdit: https://changelogs.core-directive.com/prompts/2.1.268/tools/NotebookEdit.txt?arm=cli&config=flags-anon - PushNotification: https://changelogs.core-directive.com/prompts/2.1.268/tools/PushNotification.txt?arm=cli&config=flags-anon - Read: https://changelogs.core-directive.com/prompts/2.1.268/tools/Read.txt?arm=cli&config=flags-anon - ReportFindings: https://changelogs.core-directive.com/prompts/2.1.268/tools/ReportFindings.txt?arm=cli&config=flags-anon - ScheduleWakeup: https://changelogs.core-directive.com/prompts/2.1.268/tools/ScheduleWakeup.txt?arm=cli&config=flags-anon - SendMessage: https://changelogs.core-directive.com/prompts/2.1.268/tools/SendMessage.txt?arm=cli&config=flags-anon - Skill: https://changelogs.core-directive.com/prompts/2.1.268/tools/Skill.txt?arm=cli&config=flags-anon - TaskCreate: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskCreate.txt?arm=cli&config=flags-anon - TaskGet: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskGet.txt?arm=cli&config=flags-anon - TaskList: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskList.txt?arm=cli&config=flags-anon - TaskOutput: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskOutput.txt?arm=cli&config=flags-anon - TaskStop: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskStop.txt?arm=cli&config=flags-anon - TaskUpdate: https://changelogs.core-directive.com/prompts/2.1.268/tools/TaskUpdate.txt?arm=cli&config=flags-anon - WebFetch (changed in this version): https://changelogs.core-directive.com/prompts/2.1.268/tools/WebFetch.txt?arm=cli&config=flags-anon - WebSearch: https://changelogs.core-directive.com/prompts/2.1.268/tools/WebSearch.txt?arm=cli&config=flags-anon - Workflow: https://changelogs.core-directive.com/prompts/2.1.268/tools/Workflow.txt?arm=cli&config=flags-anon - Write: https://changelogs.core-directive.com/prompts/2.1.268/tools/Write.txt?arm=cli&config=flags-anon ## Full text - system prompt: https://changelogs.core-directive.com/prompts/2.1.268/system.txt?arm=cli&config=flags-anon