Best Utilities AI Skills & MCP Servers

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.

Shared types, interfaces, constants, utilities, and decorators for @nest-mcp

Experimental package — This module provides utilities to interact inside an MCP server

Shared MCP server utilities and TypeScript server launcher for AI Universe services

Core utilities and helpers for MCP Consultant Tools packages

Shared utilities for MCP server packages

MCP client, server, and protocol utilities for Yolk agent runtimes.

Shared utilities for Pare MCP servers

MCP server exposing the Voidly Pay marketplace — list any paid HTTP endpoint, browse all of them, pay any with one wallet. v0.5.0 adds 6 generic agent utilities: voidly_hash (SHA-256/512), voidly_timestamp (proof-of-existence), voidly_random (signed CSPRN

Shared core infrastructure for the Brain ecosystem — IPC, MCP, CLI, DB connection, and utilities

Shared utilities and server orchestration for building MCP (Model Context Protocol) servers

Shared TypeScript types and x402 payment-flow utilities for @xenarch/agent-mcp — Xenarch's non-custodial x402 MCP server.

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

Core utilities for MCP servers built with ModelFetch

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.

Shared utilities for @atlassian-dc-mcp MCP servers. Not affiliated with Atlassian.

Model Context Protocol server for the XRPL-Utilities portfolio: Sentinel (wallet classifier), Pulse (signal feed), Telemetry (supply + utility floor), Trust (XLS-70/80/81 directory), Vault (RWA tracker), and Flows (ETF AUM vs XRPL flow correlation). Expos

MCP server for the UnClick tool marketplace — lets AI agents discover and use every UnClick tool

Shared utilities for Paparats MCP - path validation, gitignore filtering, language-aware exclude patterns

Shared utilities for Check Point MCP servers

Shared utilities for cz-agents MCP servers — IČO/DIČ validation, HTTP helpers, rate limiter, billing primitives

MCP server for Java application profiling via JDK utilities (jcmd, jfr, jps)

MCP Server for Appwrite utilities.