Lists multiple specific concrete actions: breakpoints, debug sessions, stepping, evaluating expressions, inspecting runtime state. Also references specific workflows like 'launch in debug mode', 'trace execution', and 'evaluate expression'.

Clearly answers both 'what' (debugging applications via IntelliJ debugger: breakpoints, debug sessions, stepping, evaluating expressions, inspecting runtime state) and 'when' (explicit TRIGGER clause with detailed trigger phrases and scenarios like 'user wants to debug, investigate a bug, set breakpoints').

Excellent coverage of natural trigger terms in both English and Russian, including user-natural phrases like 'why does this crash', 'why is this null', 'step through', 'breakpoint', and their Russian equivalents. These are terms users would naturally say when needing debugging help.

Highly distinctive by specifying IntelliJ debugger specifically, with a clear niche around runtime debugging. The trigger terms are strongly tied to debugging workflows and unlikely to conflict with general coding, testing, or other IDE skills.

The skill is mostly efficient but includes some unnecessary explanation. Phrases like 'This skill guides you through debugging applications via the IntelliJ Debug MCP server' and explanations of why rules exist ('They exist because the debugged application can be suspended on a breakpoint at any time') add tokens without adding value for Claude. The tool reference tables are well-structured and lean, but the safety rules section could be tighter.

The skill provides highly concrete, actionable guidance: specific tool names with exact parameter signatures, explicit curl flags (--max-time 5), specific tool property names (run_in_background: true), and step-by-step workflows with exact tool calls at each step. The error recovery table maps specific error messages to specific actions.

Both workflows are clearly sequenced with explicit validation checkpoints. Steps like 'After each step, call get_current_position to confirm where you are' and 'After calling resume, always call list_debug_sessions to confirm whether the session is still running or suspended again' provide proper feedback loops. The safety rules establish critical validation patterns (check suspension before network calls, verify position after stepping).

The content is well-organized with clear sections (Safety Rules, Tool Reference, Workflows, Error Recovery, Known Limitations), but it's a fairly long monolithic document with no references to external files. The tool reference tables and some of the more detailed content could potentially be split into separate reference files, though for a standalone skill without bundle files this is acceptable.