About
This skill provides centralized, defensive JSON validation for parsing the AGENT_SUCCESS_CRITERIA environment variable across all agents. It prevents JSON injection attacks (CVSS 8.2) through strict validation before parsing and ensures consistent error handling. Use it when agents need to securely parse and validate success criteria configuration.
Quick Install
Claude Code
Recommendednpx skills add mattnigh/skills_collection -a claude-code/plugin add https://github.com/mattnigh/skills_collectiongit clone https://github.com/mattnigh/skills_collection.git ~/.claude/skills/json-validationCopy and paste this command in Claude Code to install this skill
GitHub Repository
Frequently asked questions
What is the json-validation skill?
json-validation is a Claude Skill by mattnigh. Skills package instructions and resources that Claude loads on demand, so Claude can perform json-validation-related tasks without extra prompting.
How do I install json-validation?
Use the install commands on this page: add json-validation to Claude Code as a plugin, or clone its repository into your skills directory, then restart Claude so it picks up the skill.
What category does json-validation belong to?
json-validation is in the security category, tagged general.
Is json-validation free to use?
Yes. json-validation is listed on AIMCP and free to install. It runs inside Claude, so no separate service account is required to use the skill itself.
Related Skills
This skill provides centralized JSON validation for the AGENT_SUCCESS_CRITERIA environment variable. It prevents injection attacks (CVSS 8.2) through defensive parsing and ensures consistent error handling across all agents. Use it when you need secure, validated parsing of success criteria in your Claude Code agents.
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