llm-debugger

Diagnose LLM output failures and generate corrected prompts with regression tests.

Updated Jan 21, 2026
One-click install
npx skills add https://github.com/vecear/Nipponverb --skill llm-debugger-vecear
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: llm-debugger
Source: https://github.com/vecear/Nipponverb/tree/main/.claude/skills/llm-debugger
Command: npx skills add https://github.com/vecear/Nipponverb --skill llm-debugger-vecear

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

LLM outputs can be unreliable, containing hallucinations, format violations, and reasoning errors. This skill provides systematic diagnosis and fixes to improve reliability and trust in AI systems.

Core Features & Use Cases

  • Diagnosis of common failure types (hallucination, format violation, constraint breach, reasoning error, tool misuse)
  • Prompt fixes and tool-improvement recommendations
  • Automated test-case generation and verification workflow
  • Integration into debugging pipelines for iterative improvement

Quick Start

Run the LLM Debugger on a failing prompt to identify issues, generate a corrected prompt, and create regression tests.

Frequently Asked Questions about llm-debugger

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I diagnose and fix LLM hallucinations and reasoning errors?

Diagnose LLM hallucinations and reasoning errors by classifying the root cause of the failure. This skill provides prompt fixes, tool improvements, and regression tests to systematically resolve these issues and improve output reliability.

How do I stop LLM format violations and constraint breaches in my outputs?

Stop LLM format violations and constraint breaches by identifying the specific failure type and applying targeted prompt fixes. The tool generates new test cases to verify that the corrected prompt enforces your required constraints.

What is the best way to debug LLM prompt failures and improve AI quality?

The best way to debug LLM prompt failures is using a structured workflow that includes diagnosis, prompt refinement, test-case generation, and verification. This approach yields root-cause classification and iterative tool improvements for reliable AI quality.

Can I generate test cases automatically for failing LLM workflows?

Yes, you can automatically generate test cases for failing LLM workflows. The skill creates regression tests based on diagnosed failures, enabling iterative verification to ensure prompt fixes prevent future errors.

How do I identify the root cause of LLM tool misuse and incorrect outputs?

Identify the root cause of LLM tool misuse and incorrect outputs through systematic error diagnosis. The skill classifies failure types and recommends specific tool improvements to resolve the underlying reliability issues.