Add ReadTool & WriteTool alternate tools (RooCodeInc#3873)

* Added ReadTool and WriteTool alternate tool calls

* claude4 system prompt - add read & write alt tools

Author: canvrno

.changeset/ninety-candles-learn.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": patch
+---
+
+Added alt readTool & writeTool tool calls

src/core/prompts/model_prompts/claude4.ts

@@ -4,8 +4,10 @@ import osName from "os-name"
 import { McpHub } from "@services/mcp/McpHub"
 import { BrowserSettings } from "@shared/BrowserSettings"
 
-import { createAntmlToolPrompt, createSimpleXmlToolPrompt } from "@core/prompts/model_prompts/jsonToolToXml"
-import {bashToolDefinition} from  "@core/tools/bashTool"
+import { createAntmlToolPrompt, createSimpleXmlToolPrompt, toolDefinitionToSimpleXml } from "@core/prompts/model_prompts/jsonToolToXml"
+import { bashToolDefinition } from "@core/tools/bashTool"
+import { readToolDefinition } from "@core/tools/readTool"
+import { writeToolDefinition } from "@core/tools/writeTool"
 
 export const SYSTEM_PROMPT_CLAUDE4 = async (
 	cwd: string,
@@ -14,7 +16,7 @@ export const SYSTEM_PROMPT_CLAUDE4 = async (
 	browserSettings: BrowserSettings,
 ) => `
 
-${/* createAntmlToolPrompt([bashToolDefinition], true) */''}
+${/* createAntmlToolPrompt([bashToolDefinition, readToolDefinition, writeToolDefinition], true) */''}
 
 You are Cline, a highly skilled software engineer with extensive knowledge in many programming languages, frameworks, design patterns, and best practices.
 

src/core/tools/readTool.ts

@@ -0,0 +1,41 @@
+const DEFAULT_LINE_LIMIT = 2000
+const MAX_LINE_LENGTH = 2000
+
+const descriptionForAgent = `Reads a file from the local filesystem. You can access any file directly by using this tool.
+Assume this tool is able to read all files on the machine. If the User provides a path to a file assume that path is valid. It is okay to read a file that does not exist; an error will be returned.
+
+Usage:
+- The file_path parameter must be an absolute path, not a relative path
+- By default, it reads up to ${DEFAULT_LINE_LIMIT} lines starting from the beginning of the file
+- You can optionally specify a line offset and limit (especially handy for long files), but it's recommended to read the whole file by not providing these parameters
+- Any lines longer than ${MAX_LINE_LENGTH} characters will be truncated
+- Results are returned using cat -n format, with line numbers starting at 1
+- This tool allows Cline to read images (eg PNG, JPG, etc). When reading an image file the contents are presented visually as Cline is a multimodal LLM.
+- You have the capability to call multiple tools in a single response. It is always better to speculatively read multiple files as a batch that are potentially useful. 
+- You will regularly be asked to read screenshots. If the user provides a path to a screenshot ALWAYS use this tool to view the file at the path. This tool will work with all temporary file paths like /var/folders/Temporary_Screenshots/2026-09-08/Screenshot.png
+- If you read a file that exists but has empty contents you will receive a system reminder warning in place of file contents.`
+
+export const readToolDefinition = {
+	name: "Read",
+	descriptionForAgent: descriptionForAgent,
+	inputSchema: {
+		type: "object",
+		properties: {
+			file_path: {
+				type: "string",
+				description: "The absolute path to the file to read",
+			},
+			offset: {
+				type: "number",
+				description: "The line number to start reading from. Only provide if the file is too large to read at once",
+				optional: true,
+			},
+			limit: {
+				type: "number",
+				description: "The number of lines to read. Only provide if the file is too large to read at once.",
+				optional: true,
+			},
+		},
+		required: ["file_path"],
+	},
+}

src/core/tools/writeTool.ts

@@ -0,0 +1,27 @@
+const descriptionForAgent = `Writes a file to the local filesystem.
+
+Usage:
+- The file_path parameter must be an absolute path, not a relative path
+- This tool will overwrite the existing file if there is one at the provided path.
+- If this is an existing file, you MUST use the Read tool first to read the file's contents. This tool will fail if you did not read the file first.
+- ALWAYS prefer editing existing files in the codebase. NEVER write new files unless explicitly required.
+- NEVER proactively create documentation files (*.md) or README files. Only create documentation files if explicitly requested by the User.`
+
+export const writeToolDefinition = {
+	name: "Write",
+	descriptionForAgent: descriptionForAgent,
+	inputSchema: {
+		type: "object",
+		properties: {
+			file_path: {
+				type: "string",
+				description: "The absolute path to the file to write (must be absolute, not relative)",
+			},
+			content: {
+				type: "string",
+				description: "The content to write to the file",
+			},
+		},
+		required: ["file_path", "content"],
+	},
+}