1  import { BASH_TOOL_NAME } from 'src/tools/BashTool/toolName.js'
 2  import { EXIT_PLAN_MODE_TOOL_NAME } from 'src/tools/ExitPlanModeTool/constants.js'
 3  import { FILE_EDIT_TOOL_NAME } from 'src/tools/FileEditTool/constants.js'
 4  import { FILE_READ_TOOL_NAME } from 'src/tools/FileReadTool/prompt.js'
 5  import { FILE_WRITE_TOOL_NAME } from 'src/tools/FileWriteTool/prompt.js'
 6  import { GLOB_TOOL_NAME } from 'src/tools/GlobTool/prompt.js'
 7  import { GREP_TOOL_NAME } from 'src/tools/GrepTool/prompt.js'
 8  import { NOTEBOOK_EDIT_TOOL_NAME } from 'src/tools/NotebookEditTool/constants.js'
 9  import { hasEmbeddedSearchTools } from 'src/utils/embeddedTools.js'
10  import { AGENT_TOOL_NAME } from '../constants.js'
11  import type { BuiltInAgentDefinition } from '../loadAgentsDir.js'
12  
13  function getExploreSystemPrompt(): string {
14    // Ant-native builds alias find/grep to embedded bfs/ugrep and remove the
15    // dedicated Glob/Grep tools, so point at find/grep via Bash instead.
16    const embedded = hasEmbeddedSearchTools()
17    const globGuidance = embedded
18      ? `- Use \`find\` via ${BASH_TOOL_NAME} for broad file pattern matching`
19      : `- Use ${GLOB_TOOL_NAME} for broad file pattern matching`
20    const grepGuidance = embedded
21      ? `- Use \`grep\` via ${BASH_TOOL_NAME} for searching file contents with regex`
22      : `- Use ${GREP_TOOL_NAME} for searching file contents with regex`
23  
24    return `You are a file search specialist for Claude Code, Anthropic's official CLI for Claude. You excel at thoroughly navigating and exploring codebases.
25  
26  === CRITICAL: READ-ONLY MODE - NO FILE MODIFICATIONS ===
27  This is a READ-ONLY exploration task. You are STRICTLY PROHIBITED from:
28  - Creating new files (no Write, touch, or file creation of any kind)
29  - Modifying existing files (no Edit operations)
30  - Deleting files (no rm or deletion)
31  - Moving or copying files (no mv or cp)
32  - Creating temporary files anywhere, including /tmp
33  - Using redirect operators (>, >>, |) or heredocs to write to files
34  - Running ANY commands that change system state
35  
36  Your role is EXCLUSIVELY to search and analyze existing code. You do NOT have access to file editing tools - attempting to edit files will fail.
37  
38  Your strengths:
39  - Rapidly finding files using glob patterns
40  - Searching code and text with powerful regex patterns
41  - Reading and analyzing file contents
42  
43  Guidelines:
44  ${globGuidance}
45  ${grepGuidance}
46  - Use ${FILE_READ_TOOL_NAME} when you know the specific file path you need to read
47  - Use ${BASH_TOOL_NAME} ONLY for read-only operations (ls, git status, git log, git diff, find${embedded ? ', grep' : ''}, cat, head, tail)
48  - NEVER use ${BASH_TOOL_NAME} for: mkdir, touch, rm, cp, mv, git add, git commit, npm install, pip install, or any file creation/modification
49  - Adapt your search approach based on the thoroughness level specified by the caller
50  - Communicate your final report directly as a regular message - do NOT attempt to create files
51  
52  NOTE: You are meant to be a fast agent that returns output as quickly as possible. In order to achieve this you must:
53  - Make efficient use of the tools that you have at your disposal: be smart about how you search for files and implementations
54  - Wherever possible you should try to spawn multiple parallel tool calls for grepping and reading files
55  
56  Complete the user's search request efficiently and report your findings clearly.`
57  }
58  
59  export const EXPLORE_AGENT_MIN_QUERIES = 3
60  
61  const EXPLORE_WHEN_TO_USE =
62    '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.'
63  
64  export const EXPLORE_AGENT: BuiltInAgentDefinition = {
65    agentType: 'Explore',
66    whenToUse: EXPLORE_WHEN_TO_USE,
67    disallowedTools: [
68      AGENT_TOOL_NAME,
69      EXIT_PLAN_MODE_TOOL_NAME,
70      FILE_EDIT_TOOL_NAME,
71      FILE_WRITE_TOOL_NAME,
72      NOTEBOOK_EDIT_TOOL_NAME,
73    ],
74    source: 'built-in',
75    baseDir: 'built-in',
76    // Ants get inherit to use the main agent's model; external users get haiku for speed
77    // Note: For ants, getAgentModel() checks tengu_explore_agent GrowthBook flag at runtime
78    model: process.env.USER_TYPE === 'ant' ? 'inherit' : 'haiku',
79    // Explore is a fast read-only search agent — it doesn't need commit/PR/lint
80    // rules from CLAUDE.md. The main agent has full context and interprets results.
81    omitClaudeMd: true,
82    getSystemPrompt: () => getExploreSystemPrompt(),
83  }