Best Json AI Skills & MCP Servers

Extract design tokens (colors, typography, spacing, border radius, shadows) from any public website. Generates JSON and CSS custom properties for local projects. Available as an AI agent skill (Claude, Cursor, Codex) and standalone CLI.

Production-ready library for converting OpenAPI specifications into MCP tool definitions

ElysiaJS plugin for Model Context Protocol with HTTP transport and stateful sessions

Loki Mode by Autonomi. Autonomous spec-to-product system: takes a PRD, GitHub issue, OpenAPI/JSON/YAML, or one-line brief to a deployed app via the RARV-C closure loop with 11 quality gates. Provider-agnostic (Claude Code, OpenAI Codex, Cline, Aider).

MCP Apps integration for @json-render/core. Serve json-render UIs as interactive MCP Apps in Claude, ChatGPT, Cursor, and VS Code.

Fabric MCP knowledge server — stdio transport for Claude Code / Cursor / Codex CLI, manages .fabric/ knowledge base + agents.meta.json + event ledger.

MCP server for iOS leak hunting and performance investigation. 42 tools across .memgraph, .trace, and .mxdiagnostic files. v1.18 adds analyzeMetricKitPayload (42nd tool, post-mortem production-diagnostics from MetricKit JSON payloads — crash clusters, han

Token-efficient, markdown-first Notion MCP server — agents write markdown, never touch raw Notion JSON

Multi-language tree-sitter parser — supports ~50 languages including TypeScript, Python, PHP, Go, Rust, HTML, YAML, JSON, Markdown, Twig, SCSS, etc.

Format data into various output formats — pretty JSON, YAML, markdown, ASCII tables.

Model Context Protocol (MCP) server for json2video API integration.

MergeMind MCP server — read-only доступ к общей памяти команды агентов (markdown vault с гибридным поиском BM25 + vector + rerank). Запускается через `npx -y @agfpd/mergemind-mcp@latest` из .mcp.json плагина MergeMind (gh-репо agfpd/MergeMind).

Generic config-driven MCP wrapper for atrib. Spawns any upstream MCP server and applies @atrib/mcp middleware so every tool call is signed and logged. Wrap any MCP via JSON config, no per-server code.

Formula WorkPaper runtime for Node.js services and agent tools with JSON persistence and formula readback.

Stdio proxy for MCP servers that logs all JSON-RPC traffic to a replayable trace file.

jwt-lab – A fast, secure, beautiful JWT CLI tool and MCP server for developers & AI agents. Encode, decode, verify, inspect, audit, and generate keys for JSON Web Tokens.

Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex

MCP server with 12 essential developer utilities — UUID, Base64, hashing, JWT decode, JSON diff, regex test. Zero config.

Persistent key-value memory — store and recall information across sessions as JSON files.

MCP server: generate professional PDFs from JSON in Claude, Cursor, Windsurf, or any AI agent. Serverless, no Chromium. Invoices, reports, resumes.

MCP server bridging Claude Code to the OpenClaw gateway management plane (cron, sessions, agents, channels, skills, config, …) via WebSocket JSON-RPC. Wraps all 128 published methods.

Lightweight stdio-to-HTTP MCP bridge from Claude Desktop / Claude Code to Snapper /api/mcp, with a `watch` subcommand that streams live signal + order events as JSONL via the /api/auth/ws_token endpoint.

Convert data between over 40 formats including JSON, CSV, Excel, and PDF. Restructure complex schemas into custom layouts to ensure seamless data integration. Simplify information processing by automating transformations between structured and unstructured file types.

Simplify common data manipulation tasks like encoding, hashing, and formatting across various formats. Convert between CSV, JSON, Markdown, and HTML seamlessly to streamline data workflows. Extract insights from text and configurations through robust parsing, regex testing, and s