MCP For Claude Marketplace
Prompt Template Variable Injector Checker

Prompt Template Variable Injector Checker MCP Connector for Claude

A+

Validates prompt templates for correct variable syntax, undeclared variables, and potential injection vectors.

4 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

The Prompt Template Variable Injector Checker is a specialized security and integrity tool for AI engineers. It ensures that your prompt templates are structurally sound by checking for unclosed braces and undeclared variables using validate_template. Beyond syntax, it provides deep insights into template dynamics via calculate_ratio, measuring the density of dynamic content against static text. For high-stakes environments, detect_vectors scans for patterns that could lead to prompt injection attacks, while analyze_complexity and summarize_template provide metadata on template structure and length. This MCP server acts as a bridge, allowing your AI agents in Cursor, VS Code, Claude Desktop, and Windsurf to audit templates with precision.

prompt-templatevariable-validationinjection-detectionai-safetyregex-audit

4 tools expose this connector's capabilities to your AI agent.

analyze_composition

Calculates the density of dynamic content compared to static text

security_scan

Detects if any variable names pose a risk of prompt injection

audit_variables

Compares variables found in the template against a list of allowed variables

validate_syntax

Checks if the template's variable delimiters are properly opened and closed

See how to talk to your AI agent using Prompt Template Variable Injector Checker.

Check the syntax of this template: 'Hello {{user_name}}, welcome to {{location}}!' with variables {'user_name': 'Alice', 'template_id': '123'}

The template syntax is valid, and all variables are correctly declared.

Analyze the ratio of dynamic to static text in: 'System prompt: {{instruction}}. User input: {{input}}.' using pattern '{{[^}]*}}'

The dynamic character ratio is approximately 0.35, indicating a template with significant variable density.

Are there any injection risks in this template: 'Run command: {{cmd}}'

The scan detected potential injection vectors matching system command patterns in the template.

You can use the `validate_syntax` tool to verify that all delimiters like braces or angle brackets are properly opened and closed.

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