JDB-MCP
JDB-MCP is a MCP server for debugging and error analysis, published by d4n-sec.
MCP server enabling Claude and other AI agents to perform deep runtime debugging of Java applications via the Java Debug Interface.
Is it any good?
Effectiveness · benchmark pending
We haven't benchmarked JDB-MCP yet, so its score is provisional — computed from safety, maintenance, and documentation only, with popularity given no weight. When we benchmark it, we measure whether it produces materially better output than a frontier model alone, and that result leads the score. How we measure.
About JDB-MCP
Description · AI-summarised from the d4n-sec README
JDB-MCP is a Model Context Protocol server built on the Java Debug Interface (JDI) that allows AI agents like Claude to attach to and debug running Java applications. It supports attach-mode debugging with full capabilities including breakpoint management, flow control (step over/into/out), stack trace inspection, variable inspection and modification, thread and class listing, and real-time notifications to the AI agent when breakpoints are hit. Supports both stdio (for VSCode integration) and HTTP transports.
Where it fits
Browse related skills
Install JDB-MCP
Install
Install via MCP server
{
"mcpServers": {
"d4n-sec-jdb-mcp": {
"command": "npx",
"args": ["-y", "@d4n-sec/d4n-sec-jdb-mcp"]
}
}
}Install with your AI
Zero install · paste into ChatGPT, Claude, Cursor…
Install the "JDB-MCP" skill into my project by following all instructions at https://skillsdirectory.co/s/d4n-sec-jdb-mcp
Your assistant reads /s/d4n-sec-jdb-mcp and follows it — fetching the files from the source, placing them, and confirming before it runs anything. No account needed. How this works.
Frequently asked
FAQ
What does JDB-MCP do?
MCP server enabling Claude and other AI agents to perform deep runtime debugging of Java applications via the Java Debug Interface.
How do I install JDB-MCP?
JDB-MCP is a MCP server. Primary install path: { "mcpServers": { "d4n-sec-jdb-mcp": { "command": "npx", "args": ["-y", "@d4n-sec/d4n-sec-jdb-mcp"] } } }
What is the Skill Score for JDB-MCP?
JDB-MCP has a Skill Score of 4.6/10 (Caution). It is currently a provisional score — JDB-MCP hasn't been benchmarked yet, so it weights safety 75/100 (40%), maintenance 5/100 (30%), and documentation 70/100 (30%). Popularity carries zero weight until effectiveness is measured. See methodology.
Is JDB-MCP free?
JDB-MCP is published under the MIT license. See the vendor's source repository for any usage limits or paid tiers.
Related skills in Debugging and error analysis
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Embed this score
For maintainers · always-current, links back
Put it in your README — it updates as the score changes.[](https://skillsdirectory.co/skills/d4n-sec-jdb-mcp)
<a href="https://skillsdirectory.co/skills/d4n-sec-jdb-mcp"><img src="https://skillsdirectory.co/badge/d4n-sec-jdb-mcp.svg" alt="Scored by skillsdirectory" height="28" /></a>