Borrowing it
Nothing to install: this file belongs to brunoborges/jdb-agentic-debugger. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/brunoborges/jdb-agentic-debugger/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/brunoborges/jdb-agentic-debuggerWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/brunoborges/jdb-agentic-debugger/copilot-instructions)<a href="https://agentmods.dev/instructions/brunoborges/jdb-agentic-debugger/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/brunoborges/jdb-agentic-debugger/copilot-instructions/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/brunoborges/jdb-agentic-debugger/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/brunoborges/jdb-agentic-debugger/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00714 | $0.00714 |
| Opus 5.5 | $0.00286 | $0.00286 |
| Sonnet 5.5 | $0.00143 | $0.00143 |
| Haiku 4.5 | $0.00071 | $0.00071 |
Grade A, and why
jdb-agentic-debugger copilot-instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Instructions — JDB Agentic Debugger
What This Repository Is
This is an AI agent plugin (not a Java application). It teaches AI coding agents (GitHub Copilot CLI, Claude Code) to debug Java applications using JDB — the CLI debugger shipped with every JDK. The repo contains no application code; it consists entirely of agent definitions, skill documents, and Bash scripts.
Architecture
User → JDB Debugger (orchestrator agent)
├── jdb-session → Interactive debugging (launch/attach, breakpoints, stepping)
├── jdb-diagnostics → Quick JVM health checks (thread dumps, deadlock detection)
└── jdb-analyst → Read-only analysis (stack traces, root cause reports)
agents/— Agent definition files (.agent.md) for the orchestrator and 3 sub-agents. Referenced byplugin.json.skills/jdb-debugger/— The JDB skill:SKILL.md(agent instructions),scripts/(4 Bash scripts),references/(JDB/JDWP docs)..claude-plugin/plugin.json— Claude Code plugin manifest. Points to agents inagents/.tests/— Integration test framework that validates agents can autonomously debug intentionally buggy Java programs.
Key Conventions
- Agents must never run raw
jdbcommands. All JDB operations go through the 4 scripts inskills/jdb-debugger/scripts/(jdb-launch.sh,jdb-attach.sh,jdb-breakpoints.sh,jdb-diagnostics.sh). - Agents must never create helper or command files in the workspace. Requested output artifacts such as
findings-*.mdandDEBUG-REPORT.mdare allowed. Use inline CLI flags (--bp,--cmd,--auto-inspect) for debugger input. - Agent files use YAML front matter with fields:
name,description,tools, and optionallyagents/handoffs. - The orchestrator (
jdb-debugger.agent.md) never executes commands — it only triages and delegates via handoffs.
Running Tests
Tests are Bash-based integration tests that run AI agents against compiled Java programs with known bugs.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 53 lines · 714 tokens per session scan A edd894b48b08
jdb-agentic-debugger copilot-instructions.md is an instructions file published in the GitHub repository brunoborges/jdb-agentic-debugger (68 stars, last pushed 2mo ago), licensed MIT. It adds 714 tokens to every session, about $0.0029 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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