Best Json AI Skills & MCP Servers

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

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.

29 developer utilities as an MCP server — JSON repair, SQL format, hash, encode/decode, UUID, regex, CSV, subnet calc, diagram generation, git diff parsing, DB schema parsing, JSON schema validation, and more. No API keys. Runs locally.

Local-first MCP server for Claude Code cost analysis, budgets, forecasts, anomalies, and subagent-aware optimization from local JSONL session logs.

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

MCP server for AI-powered i18n file translation. Translates JSON, CSV, Android XML, iOS .strings, PO, and XLIFF into 29 languages.

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.

MCP server for BrewPage — publish and manage HTML, KV, JSON, and file content from AI assistants

MCP server for natural-language-to-JSON workflows using Git-controlled JSON contracts and JSON Schema validation.

MCP server for the Phototology photo intelligence registry. Composable analysis lenses return structured JSON. Analyze once. Remember forever. Free lookups.

Scaffold a Tap v2 browser-automation plan in seconds. `npx create-tap-script <site>/<name>` generates a deterministic .plan.json that runs at zero LLM tokens in Claude Code, Cursor, and any MCP host.

A comprehensive MCP server providing 44 tools for filesystem operations, process management, interactive sessions, async file search, JSON repair, encoding fix, duplicate detection, OCR, ZIP archives, Markdown export, and cloud-lock-safe file operations

MCP web extraction for Claude, Cursor, and agents: no-key demo plus live URL-to-JSON extraction with Haunt API

A developer-focused MCP server providing 17 tools for code analysis, JSON repair, encoding fix, import organization, format conversion, diff, and regex testing

Local web Studio for testing natural-language-to-JSON workflows with JSON Contracts.

MCP server for searching past Claude Code conversation history. Local BM25 search over JSONL logs with persistent index, secret redaction, solved-hint, and instant claude --resume.

Open-source MCP server to publish to Dev.to, Ghost, Hashnode, WordPress, Medium, Substack, LinkedIn, X, Bluesky, and Mastodon from Claude Code. Local stdio, no cloud relay. Includes SEO scoring, JSON-LD schema, canonical-URL wiring, social-post generation

MCP server with 45 developer utilities (16 free + 29 pro). Free: UUID, hash, HMAC, base64, timestamps, JWT decode, random strings, URL encode/decode, JSON format, YAML/JSON convert, regex test, cron explain, color convert, HTTP status, slugify, HTML escap

Convert Playwright scripts into Tap v2 plans. Compile .spec.ts / .test.ts files into deterministic v2 Plan JSON that runs at zero LLM tokens in Claude Code, Cursor, and any MCP host.

MCP server for validating, transforming, and normalizing structured data - built specifically for AI agents

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.

Standalone MCP (Model Context Protocol) server - stdio/http/websocket transports, connection pooling, tool registry

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