ASP.NET Core Debugger — MCP Server for AI Agents
Bridges Claude to netcoredbg via the Debug Adapter Protocol, letting the agent pause your running .NET app, inspect variables, set breakpoints, and mutate state mid-execution. Ships with netcoredbg binaries for Linux, macOS, and Windows, so no separate debugger install. You get 27 tools ranging from raw DAP primitives (attach, set breakpoint, evaluate expression) to agent-friendly composites like exception_autopsy, hang_analyze, and stack_explore that bundle multi-step debugging workflows into single calls. Reach for this when you want Claude to ground its answers in actual runtime values instead of guessing, or when you need to test a fix hypothesis by mutating variables without restarting the process.
- GitHub stars
- 15
- tools
- 27
- transport
- STDIO
- last updated
- Sep 8, 2026
Tools
27 toolsPublic tool metadata for what this MCP can expose to an agent.
debug_launchStart, attach to, or stop a debug session
Start, attach to, or stop a debug session
No parameter schema in public metadata yet.
debug_attachStart, attach to, or stop a debug session
Start, attach to, or stop a debug session
No parameter schema in public metadata yet.
debug_disconnectStart, attach to, or stop a debug session
Start, attach to, or stop a debug session
No parameter schema in public metadata yet.
debug_stateStart, attach to, or stop a debug session
Start, attach to, or stop a debug session
No parameter schema in public metadata yet.
debug_continueDrive the debuggee and wait for it to stop
Drive the debuggee and wait for it to stop
No parameter schema in public metadata yet.
debug_pauseDrive the debuggee and wait for it to stop
Drive the debuggee and wait for it to stop
No parameter schema in public metadata yet.
debug_stepDrive the debuggee and wait for it to stop
Drive the debuggee and wait for it to stop
No parameter schema in public metadata yet.
breakpoint_waitDrive the debuggee and wait for it to stop
Drive the debuggee and wait for it to stop
No parameter schema in public metadata yet.
breakpoint_setLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
breakpoint_set_functionLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
breakpoint_set_exceptionLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
breakpoint_set_dataLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
breakpoint_removeLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
breakpoint_listLine, function, exception, and data breakpoints
Line, function, exception, and data breakpoints
No parameter schema in public metadata yet.
threads_listExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
stacktrace_getExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
variables_getExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
variables_setExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
evaluateExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
stack_exploreExamine and mutate program state
Examine and mutate program state
No parameter schema in public metadata yet.
exception_autopsyOne call: exception chain + top frames + locals + source snippet
One call: exception chain + top frames + locals + source snippet
No parameter schema in public metadata yet.
hang_analyzeAuto-pause, classify each thread's blocking pattern (Monitor / Task / Semaphore / async / …)
Auto-pause, classify each thread's blocking pattern (Monitor / Task / Semaphore / async / …)
No parameter schema in public metadata yet.
trace_startServer-side request tracing — auto-instrument a call chain and capture arguments at every entry
Server-side request tracing — auto-instrument a call chain and capture arguments at every entry
No parameter schema in public metadata yet.
trace_getServer-side request tracing — auto-instrument a call chain and capture arguments at every entry
Server-side request tracing — auto-instrument a call chain and capture arguments at every entry
No parameter schema in public metadata yet.
trace_stopServer-side request tracing — auto-instrument a call chain and capture arguments at every entry
Server-side request tracing — auto-instrument a call chain and capture arguments at every entry
No parameter schema in public metadata yet.
process_read_outputDrain the debuggee's stdout/stderr
Drain the debuggee's stdout/stderr
No parameter schema in public metadata yet.
debugger_healthQuick check that netcoredbg loaded and the bundled binary is reachable
Quick check that netcoredbg loaded and the bundled binary is reachable
No parameter schema in public metadata yet.
Sponsors
Agent CaffeineSponsoredClose your lid, come back to finished work
SnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthly
WaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthly
knobsSponsoredSee your site on any phone, any day, in any languageReadme
ASP.NET Core Debugging MCP Server
The cross-platform .NET debugging MCP — runs on Linux, macOS, and Windows.
Details
- Repository
- github.com/magna-nz/aspnetcore-debugger-mcp
- Website
- github.com/magna-nz/aspnetcore-debugger-mcp
- Package
AspNetCoreDebuggerMcp- Transport
- STDIO
- Registry
- MCP registry, active