Connect to JVM via JDWP

Set breakpoint at class:line, optionally conditional

List active breakpoints

Remove a breakpoint by ID

Resume all threads

Step into next line

Step over next line

Step out of current frame

Get stack frames with variables

Read one local variable by name

Set default thread for inspection

List all threads

Suspend all threads

End debug session

Show last breakpoint/step event

Wait for next event with timeout

Inspect object fields by object ID

Search loaded classes by name pattern

List methods of a class with line ranges

Break on exceptions (caught/uncaught, optionally by class)

Invoke a method on an object. Supports args: list.get(0), map.get("key")

Set a local variable value in a stack frame

Combined dump: last event + breakpoints + stack with vars

Get JVM version info

Watchpoint: break when a field is modified

Trace method calls on a class/package. Returns immediately; use debug.trace_result to get the call path.

Get collected trace after debug.trace. Shows call path with depth.

Wait for a class to be loaded by the JVM. Use when set_breakpoint says class not found.