LLDB

LLDB MCP integrates the LLDB debugger with Claude's MCP, letting you start, control, and interact with debugging sessions directly from your client. This enables AI-assisted debugging workflows where you can load programs, set breakpoints, inspect memory, and step through code using natural language prompts.

How to use

You interact with LLDB MCP through an MCP client that connects to the LLDB session via the configured server. Start a new LLDB session, load your program, set breakpoints, and then control execution with commands like run, continue, step, and finish. You can inspect variables, memory, and registers, analyze stack traces, and disassemble code. Use natural language prompts to create and manage breakpoints, view backtraces, print values, and explore program state. Each session has a unique identifier, so reference the correct session when issuing commands.

Basic workflow

• Start a new LLDB session
• Load the program you want to debug
• Set breakpoints at relevant functions or lines
• Run the program to start execution
• Inspect variables, memory, and registers as needed
• Use step, next, or finish to control execution flow
• Examine the call stack with backtrace to understand the crash or bug
• Terminate the session when you are finished

Available tools

lldb_start

Start a new LLDB session and prepare the environment for debugging.

lldb_terminate

Terminate the current LLDB session and clean up resources.

lldb_list_sessions

List all active LLDB sessions managed by the MCP server.

lldb_load

Load a program into the current LLDB session for debugging.

lldb_attach

Attach the debugger to a running process.

lldb_load_core

Load a core dump for post-mortem analysis.

lldb_run

Run the loaded program under LLDB control.

lldb_continue

Continue program execution from the current point.

lldb_step

Step to the next instruction or line within the current frame.

lldb_next

Step over the next function call.

lldb_finish

Run until the current function returns.

lldb_kill

Terminate the running process being debugged.

lldb_set_breakpoint

Set a breakpoint at a specified location.

lldb_breakpoint_list

List all breakpoints currently set.

lldb_breakpoint_delete

Delete a breakpoint by location.

lldb_watchpoint

Set a watchpoint on a variable or memory address.

lldb_backtrace

Show the current call stack.

lldb_print

Print the value of an expression or variable.

lldb_examine

Examine memory content at a given address or region.

lldb_info_registers

Display the current register values.

lldb_frame_info

Get detailed information about the current stack frame.

lldb_disassemble

Disassemble code in the current context.

lldb_process_info

Get information about the current debugging process.

lldb_thread_list

List all threads in the current process.

lldb_thread_select

Select a specific thread for subsequent commands.

lldb_command

Execute an arbitrary LLDB command.

lldb_expression

Evaluate an expression in the current frame.

lldb_help

Get help for LLDB commands.