chatgpt

Adding a Custom MCP Server to Claude and ChatGPT

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Simon Willison explains how to add a custom MCP (Model Context Protocol) server to Claude and ChatGPT, enabling these chat interfaces to query external data sources like his blog’s database. In Claude, adding an MCP is straightforward via the Connectors menu, while in ChatGPT it requires enabling Developer mode, adding the MCP as a plugin without authentication, and manually activating it for each chat session. However, MCP plugins are not supported in ChatGPT’s Advanced Voice mode.

https://til.simonwillison.net/llms/mcp-in-claude-and-chatgpt

Unabyss – Your Complete Context in Every AI You Use

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Unabyss offers a unified, continuously updated context layer that connects and syncs data from multiple apps and AI tools—such as ChatGPT, Claude, Gemini, and VS Code—allowing users to maintain a single, consistent AI context across platforms without re-explaining themselves. By integrating with over 25 applications including Slack, Gmail, Notion, and GitHub, Unabyss pulls and structures live information securely, enabling seamless AI collaboration and context sharing under user control. This context layer supports various use cases for individuals and teams, improving AI interactions by providing richer, up-to-date context that travels across different AI services.

https://unabyss.com/

Memoriq – Your Private AI Memory

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Memoriq is a privacy-focused, end-to-end encrypted AI memory vault that lets users save and search important conversations from major AI platforms like ChatGPT, Claude, Gemini, and Grok in one secure place. It offers a free hosted option with 100 MB storage or self-hosting for unlimited storage, with all data encrypted client-side before uploading to ensure zero-knowledge privacy. The open-source project includes a Chrome extension for easy chat capture, organization by projects and tags, and supports full data export and deletion under user control.

https://memoriq.me/

Second Brain – Your AI Shouldn’t Start From Zero

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Second Brain is a self-hosted, persistent memory layer for AI tools like Claude, ChatGPT, and Cursor that maintains shared context across sessions by storing, synthesizing, and recalling user data on Cloudflare’s free-tier infrastructure. Unlike built-in AI memories that reset or lack transparency, Second Brain offers searchable, exportable, and conflict-resolving storage accessible through any Model Context Protocol (MCP) compatible client, enabling consistent, cross-tool continuity without repeated explanations. Its extensible ecosystem includes CLI tools, Obsidian integration, and iOS shortcuts, providing practical workflow enhancements for developers and knowledge workers.

https://www.thesecondbrain.dev/

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