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    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIGitHub CopilotGitHub CopilotGemini CLIGemini CLI+20 more

    📝 Prompt Template Linter

    3

    The Prompt Template Linter is a specialized diagnostic tool designed to sanitize and optimize LLM prompt templates before they reach production.

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    📝 Prompt Template Linter

    📝 Prompt Template Linter

    Example session with this skill installed

    Lint the prompt templates in the /prompts directory and check for injection risks and missing variables.

    • Read your context and instructions
    • Compiled the prompt template linter

    Findings

    • [PTL001] SEVERE: /prompts/user_gen.j2 (Line 12) - Untrusted variable 'user_input' interpolated into instruction region.
    • [PTL002] WARNING: /prompts/summary.md (Line 4) - Placeholder 'date_range' is defined but never used in the template.

    Connects securely to your tools. The creator never sees your data.

    What you get

    Identify prompt injection surfaces in dynamic Jinja2 templates.Fix broken variable references and leftover placeholders before deployment.Detect contradictory model instructions that lead to hallucinations.Enforce output schema requirements for reliable downstream parsing.

    About this skill

    What it does

    The Prompt Template Linter is a specialized diagnostic tool designed to sanitize and optimize LLM prompt templates before they reach production. It scans your template files to identify structural flaws, security risks, and logical inconsistencies that often lead to model hallucinations or prompt injection vulnerabilities.

    Why use this skill

    Manually auditing prompts for "jailbreak" surfaces or missing variables is error-prone. This skill automates the detection of critical issues like unescaped user input in instruction blocks, contradictory constraints, and orphaned placeholders. It ensures your prompts are robust, type-safe (where variables are concerned), and formatted for reliable parsing.

    Supported tools

    • File Formats: Supports .prompt, .txt, .md, .jinja, and .j2 files.
    • Integration: Works via CLI or stdin, making it ideal for pre-commit hooks or CI/CD pipelines.
    • Remediation: Includes a library of safe-snippet references to fix flagged issues instantly.

    Output format

    The skill produces a structured report categorized by rule ID (PTL001-PTL006) and severity, pinpointing the exact line and file where the issue resides.

    How to install

    Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

    ~30 seconds
    1. 1

      Download the ZIP

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    2. 2

      Unzip into your skills folder

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    3. 3

      Ask your agent to use it

      Restart the agent if it was already running. It picks the skill up automatically - no config needed.

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    Recently published to Agensi

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    Security scanned

    Verified clean 3 months ago

    • Passed all security checks, Safe to install

    Listed3 months ago

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