Prompt Failure Mode Auditor
Hardens AI prompts and agent workflows against logic errors, tool-misuse, and prompt injection.
Free
Works with the AI tools you already use
Claude Code
Cursor
Codex CLI
Muse
Dots+22 moreClaude CodeCursorCodex CLIMuseDots
OpenClaw
Manus
Grok
Grok Bot+18 agentsprompt-failure-mode-auditor
Example session with this skill installed
Audit this customer support agent prompt. It has access to a 'refund_customer' tool and 'read_order_history'. It keeps getting tricked into giving refunds for non-existent orders.
- Read your context and instructions
- Compiled the prompt-failure-mode-auditor
Findings
| Severity | Issue | Fix |
|---|---|---|
| High | No Order Validation | Require read_order_history confirmation before calling refund. |
| Med | Identity Spoofing | Verify customer_id against auth context, not user-provided text. |
Safer Rewrite
[Optimized instructions provided...]
Connects securely to your tools. The creator never sees your data.
About this skill
Secure and Optimize Your AI Agent Workflows
Deploying AI agents without a rigorous audit is a recipe for prompt injection, unintended tool execution, and "hallucinated" permissions. The Prompt Failure Mode Auditor acts as a professional security and logic review layer for your AI instructions and tool-calling workflows.
What it does
This skill systematically analyzes your prompts and agent instructions to find architectural weaknesses. It doesn't just look for typos; it investigates:
- Logical Contradictions: Conflicting priorities that cause agent loops or inconsistent behavior.
- Tool Boundaries: Vulnerabilities in how the agent handles destructive actions, payments, or private data through connected APIs.
- Injection Risks: How untrusted user input might hijack the agent's core instructions.
- Brittle Assumptions: Missing input requirements that lead to failure when data is incomplete.
Why use this skill?
Manually testing every edge case is impossible. This skill provides a structured Failure Mode Matrix and Evaluation Cases that you can use for automated or manual testing. It concludes with a production-ready rewrite of your prompt, implementing defensive engineering patterns that are difficult to write from scratch.
The Result
You receive a detailed report identifying severity-rated risks, a hardened version of your prompt, and 5-10 specific evaluation scenarios to ensure your agent stays within its sandbox.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
Free skills download straight away. Paid skills unlock right after purchase.
- 2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
Skills folder by agent
Click the path to copy it. Create the folder if it does not exist yet.
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