The full text
The whole documents, one page each, exactly as they were sent.
DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
2 added and 1 removed, of 217 lines, about 3 words, in the prompt all 27 arms receive. 1 of 23 tool descriptions changed. Compared against v2.1.119.
- Is a git repository: false
This edit reached all 27 arms
# Environment You have been invoked in the following environment: - Primary working directory: /home/corpus/work - - Is a git repository: false + - Is a git repository: false - Platform: linux - Shell: unknown - OS Version: Linux 5.15.0-187-generic
- Claude Code is available as a CLI in the terminal, desktop app (Mac/Windows), web app (claude.ai/code), and IDE extensions (VS Code, JetBrains). - Fast mode for Claude Code uses Claude Opus 4.6 with faster output (it does not downgrade to a smaller model). It can be toggled with /fast and is only available on Opus 4.6. +# Context management When working with tool results, write down any important information you might need later in your response, as the original tool result may be cleared later.
This edit reached all 27 arms
Launch a new agent to handle complex, multi-step tasks. Each agent type has specific capabilities and tools available to it. Available agent types and the tools they have access to: -- Explore: Fast agent specialized for exploring codebases. Use this when you need to quickly find files by patterns (eg. "src/components/**/*.tsx"), search code for keywords (eg. "API endpoints"), or answer questions about the codebase (eg. "how do API endpoints work?"). When calling this agent, specify the desired thoroughness level: "quick" for basic searches, "medium" for moderate exploration, or "very thorough" for comprehensive analysis across multiple locations and naming conventions. (Tools: All tools except Agent, ExitPlanMode, Edit, Write, NotebookEdit) +- Explore: Fast read-only search agent for locating code. Use it to find files by pattern (eg. "src/components/**/*.tsx"), grep for symbols or keywords (eg. "API endpoints"), or answer "where is X defined / which files reference Y." Do NOT use it for code review, design-doc auditing, cross-file consistency checks, or open-ended analysis — it reads excerpts rather than whole files and will miss content past its read window. When calling, specify search breadth: "quick" for a single targeted lookup, "medium" for moderate exploration, or "very thorough" to search across multiple locations and naming conventions. (Tools: All tools except Agent, ExitPlanMode, Edit, Write, NotebookEdit) - general-purpose: General-purpose agent for researching complex questions, searching for code, and executing multi-step tasks. When you are searching for a keyword or file and are not confident that you will find the right match in the first few tries use this agent to perform the search for you. (Tools: *) - Plan: Software architect agent for designing implementation plans. Use this when you need to plan the implementation strategy for a task. Returns step-by-step plans, identifies critical files, and considers architectural trade-offs. (Tools: All tools except Agent, ExitPlanMode, Edit, Write, NotebookEdit) - statusline-setup: Use this agent to configure the user's Claude Code status line setting. (Tools: Read, Edit)
The whole documents, one page each, exactly as they were sent.