An open protocol standardising how LLM applications discover and invoke external tools, resources, and prompts. Introduced by Anthropic in 2024.
tool-use
Model Context Protocol (MCP)
Related terms
Tools that implement Model Context Protocol (MCP)
Claude
FeaturedWriting · Claude Opus / Sonnet
9.6
Anthropic's flagship assistant for long-form writing, analysis, and coding.
Freemium· Free tier; Pro $20/mo; Max $100–$200/molong-form writingsummarization
Zed
Coding · Claude (Sonnet/Opus), GPT-4o/5, Gemini, Ollama-hosted local models, and Zed's own Zeta2 open-weight edit-prediction model
8.4
A high-performance, multiplayer code editor built in Rust with native AI agent workflows.
Freemium· Personal: Free / Pro: $10 per user/mo (includes $5 token credits + usage-based billing) / Business: $30 per seat/moAI pair-programming with Claude or GPT agentsInline code refactoring via natural-language prompts
Cursor
FeaturedCoding · Claude / GPT (configurable)
9.5
AI-first VS Code fork — chat, edit, and agentic coding in one IDE.
Freemium· Free hobby; Pro $20/mo; Business $40/mocodingrefactors