Best Json AI Skills & MCP Servers

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

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

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

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

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.

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

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

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

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.

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

A comprehensive MCP server providing 43 tools for filesystem operations, process management, interactive sessions, async file search, JSON repair, encoding fix, duplicate detection, OCR, ZIP archives, and Markdown export

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

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.

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

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

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

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

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

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

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.

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

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

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).