Tools & Capabilities

UltraCoder has 29 built-in tools it can use to complete tasks. Each tool requires your approval before it runs (unless you've enabled auto-approval for that tool type).

File Operations

read_fileRead a file's content, optionally limited to a line range

write_to_fileWrite or overwrite a file's full content

edit_fileMake targeted edits to a file with natural language instructions

apply_diffApply a unified diff patch to a file

insert_contentInsert text at a specific line number

search_and_replaceFind and replace text across a file

Search & Discovery

list_filesList files and directories at a path

search_filesSearch files using regex patterns

codebase_searchSemantic search across the indexed codebase

list_code_definition_namesList all function, class, and symbol names in a file

Terminal

execute_commandRun a shell command in the integrated terminal. Requires approval.

Web & Browser

browser_actionControl a browser: navigate to URLs, click elements, type text, take screenshots, scroll

MCP (Model Context Protocol)

use_mcp_toolCall a tool exposed by a connected MCP server

access_mcp_resourceRead a resource (data source) from a connected MCP server

Task & Workflow

attempt_completionMark the current task as complete and present the result to the user

new_taskCreate a sub-task with a specified mode and initial message

switch_modeSwitch UltraCoder to a different mode (Code, Architect, Ask, Debug, Orchestrator)

update_todo_listCreate or update a structured to-do list for the current task

ask_followup_questionPause and ask the user a clarifying question

condenseSummarize and compress the context window to fit more into a long task

Utilities

generate_imageGenerate an image using the configured image generation provider

new_ruleCreate a new UltraCoder rule from the current conversation

report_bugSubmit a bug report from within the conversation

fetch_instructionsLoad task-specific instructions from a file or URL

ℹ Note:The set of available tools depends on the active mode. Ask mode does not have access to file editing or terminal tools. Architect mode can only edit markdown files.

Allowed & denied commands

You can restrict which shell commands UltraCoder can propose via VS Code settings:

ultra-coder.allowedCommands — commands UltraCoder may execute (default: ["git log", "git diff", "git show"])
ultra-coder.deniedCommands — commands UltraCoder can never propose
ultra-coder.commandExecutionTimeout — max seconds for a command to run (0 = no limit)