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LiteLLM works as either a Python SDK or a self-hosted AI gateway, exposing more than 100 providers through a unified OpenAI-compatible interface. Teams can switch among services such as OpenAI, Anthropic, Gemini, Bedrock, and Azure without rewriting every integration, while centralizing virtual keys, spend tracking, load balancing, logging, and guardrails at the gateway.

The MCP Python SDK turns Python type annotations into tool schemas and offers both server and client APIs for in-memory, stdio, and remote HTTP connections. It supports the standard MCP transports and is suited to building or testing protocol integrations. The documented v2 line is a breaking-change-prone prerelease, so v1.x remains the stable production choice.

The MCP TypeScript SDK supplies separate server and client packages for implementing tools, resources, prompts, transports, and OAuth across Node.js, Bun, and Deno. Optional thin adapters connect MCP to runtimes such as Express and Hono. The main branch documents the v2 beta, while v1.x remains the supported production release.

lacuna-toolkit exposes the Lacuna Music API through a TypeScript SDK, a command-line tool, an MCP server, and an Agent Skill. Developers can generate music from Node 18+, shell scripts, an MCP-compatible client, or an AI coding agent, while the SDK also handles webhook verification. Using any surface still requires access to the Lacuna service and its credentials.