Best LLM Tools AI Skills & MCP Servers

Evaluate, simplify, and differentiate mathematical expressions via MCP. STDIO or Streamable HTTP.

The shape-shifting MCP hub — shapeshift() into 130,000+ MCP servers at runtime. One entry point, no restarts, 7 registries.

An MCP (Model Context Protocol) server enabling LLMs and AI agents to interact with Git repositories. Provides tools for comprehensive Git operations including clone, commit, branch, diff, log, status, push, pull, merge, rebase, worktree, tag management,

MCP Server for Raindrop.io bookmark management

MCP server for Formulon Excel-compatible formula and workbook evaluation

MCP server for the Gatefare paid-API marketplace. Works with Claude Desktop, Cursor, Continue, and any MCP client. Pay per API call in USDC on Base via the open x402 standard. Non-custodial.

Time Estimation MCP Server — 24 structured tools for PERT, COCOMO II, Monte Carlo, sprint forecasting, token-to-time mapping, cost estimation, schedule risk, and model comparison. Self-improving engine with estimation feedback loop. MCP + CLI + REST API.

Structured reminders CLI for AI agents with MCP server

TypeScript client SDK for Undisk MCP — undo-first versioned file storage for AI agents

Agent-native decentralized commerce protocol. Humans and AI agents trade on the same protocol via MCP tools.

Context-aware tool retrieval for language models - unlock the full potential of LLM function calling without context window limitations or constraints.

High-performance API and Model Context Protocol (MCP) server for validating Mermaid diagrams with comprehensive security features, multiple transport options, and enterprise-grade capabilities

Interactive CLI for Undisk MCP — undo-first versioned file storage for AI agents

MCP server exposing Cascade CMS API operations to LLMs and agents