contract-checker — JSON schema validation contract-checker, vr_ai_platform, community, JSON schema validation, ide skills, contract-checker install, Claude Code, Cursor, Windsurf

v1.0.0
GitHub

About this Skill

Ideal for JSON Validation Agents requiring precise schema validation and reporting against command and decision schemas. contract-checker is a skill that validates JSON fixtures against predefined schemas, ensuring data integrity and consistency.

Features

Loads command and decision schemas from contracts/schemas/
Validates each JSON fixture against the correct schema
Treats invalid_*.json fixtures as expected failures
Emits a summary and exits with status 1 if expectations are not met
Prints validation reports to stdout

# Core Topics

JSON schema validation contract-checker install
Nepopams Nepopams
[0]
[0]
Updated: 3/8/2026

Agent Capability Analysis

The contract-checker skill by Nepopams is an open-source community AI agent skill for Claude Code and other IDE workflows, helping agents execute tasks with better context, repeatability, and domain-specific guidance. Optimized for JSON schema validation, contract-checker install.

Ideal Agent Persona

Ideal for JSON Validation Agents requiring precise schema validation and reporting against command and decision schemas.

Core Value

Empowers agents to validate JSON fixtures against predefined schemas using JSON schema validation, providing detailed validation reports and non-zero exit status for mismatches, leveraging JSON data and schema validation protocols.

↓ Capabilities Granted for contract-checker

Validating JSON data against command schemas
Debugging decision schema mismatches
Automating JSON fixture validation reports

! Prerequisites & Limits

  • Requires JSON fixtures and schema files
  • Limited to JSON schema validation
  • Exits with non-zero status for validation failures
Labs Demo

Browser Sandbox Environment

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Experience this Agent in a zero-setup browser environment powered by WebContainers. No installation required.

Boot Container Sandbox

contract-checker

Install contract-checker, an AI agent skill for AI agent workflows and automation. Works with Claude Code, Cursor, and Windsurf with one-command setup.

SKILL.md
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Contract Checker Skill

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Inputs

  • JSON fixtures in skills/contract-checker/fixtures/.
  • Command and decision JSON schemas in contracts/schemas/.

Outputs

  • Validation report printed to stdout.
  • Non-zero exit status when fixtures do not match schemas.

Steps

  1. Load command and decision schemas.
  2. Validate each fixture against the correct schema.
  3. Treat invalid_*.json fixtures as expected failures.
  4. Emit a summary and exit with status 1 if expectations are not met.

Definition of Done (DoD)

  • All fixtures validate against their expected schema outcome.
  • Invalid fixtures fail validation as expected.
  • Script exits cleanly with status 0 when expectations are met.

FAQ & Installation Steps

These questions and steps mirror the structured data on this page for better search understanding.

? Frequently Asked Questions

What is contract-checker?

Ideal for JSON Validation Agents requiring precise schema validation and reporting against command and decision schemas. contract-checker is a skill that validates JSON fixtures against predefined schemas, ensuring data integrity and consistency.

How do I install contract-checker?

Run the command: npx killer-skills add Nepopams/vr_ai_platform/contract-checker. It works with Cursor, Windsurf, VS Code, Claude Code, and 19+ other IDEs.

What are the use cases for contract-checker?

Key use cases include: Validating JSON data against command schemas, Debugging decision schema mismatches, Automating JSON fixture validation reports.

Which IDEs are compatible with contract-checker?

This skill is compatible with Cursor, Windsurf, VS Code, Trae, Claude Code, OpenClaw, Aider, Codex, OpenCode, Goose, Cline, Roo Code, Kiro, Augment Code, Continue, GitHub Copilot, Sourcegraph Cody, and Amazon Q Developer. Use the Killer-Skills CLI for universal one-command installation.

Are there any limitations for contract-checker?

Requires JSON fixtures and schema files. Limited to JSON schema validation. Exits with non-zero status for validation failures.

↓ How To Install

  1. 1. Open your terminal

    Open the terminal or command line in your project directory.

  2. 2. Run the install command

    Run: npx killer-skills add Nepopams/vr_ai_platform/contract-checker. The CLI will automatically detect your IDE or AI agent and configure the skill.

  3. 3. Start using the skill

    The skill is now active. Your AI agent can use contract-checker immediately in the current project.

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