Package index • hal

Conversation

Stateful conversation and pipe-friendly verbs.

hal(): Chat with GitHub Copilot
hal_ask(): Ask Copilot a Question – Pipe and Standalone Modes
hal_do(): Code Generation via LLM – Pipe and Standalone Modes
hal_history(): View Conversation History
hal_plan(): Locate the current session's plan.md
hal_reset(): Reset the hal session
hal_usage(): Session usage summary
hal_quota(): Claude 5-hour window quota status

Spreadsheets

Translate Excel formula columns into verified tidyverse R.

hal_excel() print(<hal_excel_code>): Turn an Excel sheet into R: code that reads the data and recreates the formulas

Configuration

Session settings and governance controls.

hal_configure(): Configure hal Options
hal_config(): Get Current hal Configuration

Custom Tools

Build and register LLM-callable tools from R functions.

hal_tool(): Create a Tool Definition from an R Function
hal_tools(): List Registered Tools
hal_register_tool(): Register an R Function as a Copilot Tool
hal_register_tools(): Register Multiple Tools on the Active Session
hal_register_tool_specs(): Register Tool Specs
hal_register_package_tools(): Register Functions from an R Package as Tools

Chat Interface

High-level R6 API for conversing with Copilot models.

hal_chat(): Create a Copilot chat session
HalChat: GitHub Copilot Chat Session

Low-Level Client

Direct ACP transport for advanced use cases.

hal_client(): Create a Copilot ACP client
HalClient: GitHub Copilot SDK Client

Setup & Discovery

Install, configure, and check prerequisites.

hal_setup(): Set up hal for your environment
hal_status(): Diagnose your hal installation in one call
hal_available(): Check whether the active backend's transport is ready
hal_models(): List available models
hal_model_info(): Inspect a single model in detail
hal_install_bridge(): Install the hal-bridge Positron extension
hal_bridge_status(): Check whether hal-bridge is installed and running

Data Objects

S3 classes for responses, turns, and tool calls.

print(<hal_response>): hal prompt response
print(<hal_turn>): hal conversation turn
format(<hal_tool_call>) print(<hal_tool_call>): hal tool call