Skills and MCP tagged “json-schema”

hook-development official Anthropic skill Guides the development of Claude Code plugin hooks to intercept tool calls, validate output, and enforce task completion checks. Claude Code 7,028installs declarative-agents official github skill Build and validate Microsoft 365 Copilot declarative agents with JSON Schema v1.5, TypeSpec, and Agents Playground support. Useful for prototypes and enterprise designs. GitHub Copilot 8,700installs prompt-engineer https://github.com/Jeffallan skill A skill that writes, refactors and tests LLM prompts: templates, JSON schemas, scoring rubrics, test suites. Useful when model output is inconsistent and you need to know why. Claude Code CX Codex Cursor +1 5,600installs agent-tool-builder sickn33 skill A skill for writing tool schemas an agent can actually use: JSON Schema, descriptions, validation, error paths. Useful when it keeps calling the wrong function. Claude Code CX Codex Cursor +1 958installs