Prompt Regression Tester
This tool analyzes prompts for consistency across multiple generations, ensuring stable and predictable AI outputs – vital for reliable workflows.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add prompt-regression-tester npx -- -y @trustedskills/prompt-regression-tester
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"prompt-regression-tester": {
"command": "npx",
"args": [
"-y",
"@trustedskills/prompt-regression-tester"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
What it does
This skill allows you to test and compare AI agent responses across different prompts. It helps identify regressions in performance, ensuring that changes to models or prompt engineering don't negatively impact desired outcomes. The tool facilitates a systematic approach to evaluating prompt effectiveness over time by providing a way to record and analyze results.
When to use it
- After model updates: Verify that new versions of language models maintain existing capabilities and don’t introduce unexpected behavior.
- During prompt engineering iterations: Track the impact of changes to prompts on output quality and consistency.
- For automated testing pipelines: Integrate into CI/CD workflows to automatically assess prompt performance with each code deployment.
- To establish a baseline: Create a benchmark for evaluating future prompt modifications against known good results.
Key capabilities
- Prompt comparison
- Regression detection
- Result recording
- Automated testing integration
Example prompts
- "Compare the responses to 'Summarize this article:' with the original and revised prompts."
- "Run a regression test on the prompt 'Write a poem about cats' after updating the model version."
- "Record the results of running prompt 'Translate to French: Hello world' across different models."
Tips & gotchas
This skill requires an understanding of prompt engineering and basic testing principles. Ensure you have clear criteria for evaluating responses, as subjective assessments can impact regression detection accuracy.
Tags
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Security Audits
| Gen Agent Trust Hub | Pass |
| Socket | Pass |
| Snyk | Pass |
🌐 Community
Passed automated security scans.