Sequential Thinking MCP Server
Reference server that gives a model a structured scratchpad for step-by-step, revisable reasoning on complex problems.
How to use it
Add it as an MCP server in your client (e.g. claude mcp add in Claude Code, ~/.codex/config.toml for Codex, or .cursor/mcp.json in Cursor). Follow the install command and auth steps in the project’s README; they change often, so we link instead of copying them.
Related
Memory MCP Server
Reference server providing persistent memory as a local knowledge graph of entities, relations and observations.
Graphiti
31.8kFramework for real-time, temporally-aware knowledge graphs for agents, with a bundled MCP server for agent memory.
Filesystem MCP Server
Reference server from the MCP maintainers that gives an agent read/write access to directories you explicitly allow, with configurable roots.
Git MCP Server
Reference server for reading, searching and manipulating local Git repositories: status, diffs, logs, commits and branches.
Fetch MCP Server
Reference server that fetches a URL and converts the page to clean Markdown so an agent can read web content efficiently.
Everything (Test) MCP Server
Kitchen-sink reference server exercising prompts, resources, tools and sampling. Useful for testing MCP clients.