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LLMnesia
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About LLMnesia
LLMnesia is a local-first Chrome extension designed to index and instantly search AI chat histories across multiple assistants such as ChatGPT, Claude, and Gemini. It retrieves prompts, code snippets, answers, and links to original conversations directly within your browser, ensuring all indexing and search operations run entirely on-device. The tool eliminates the need for cloud sync, accounts, or tracking, making it ideal for users who prioritize privacy and quick access to past AI outputs. Researchers, developers, writers, and heavy AI users benefit from its ability to organize and surface valuable chat history without exposing sensitive content. By running locally, LLMnesia avoids third-party storage, reducing risks associated with data breaches or unauthorized access. Its cross-platform compatibility allows seamless retrieval of chat histories regardless of the AI assistant used. The extension is particularly useful for those who frequently reference past interactions to inform current work or research. Overall, LLMnesia provides a private, efficient, and user-friendly way to manage and revisit AI-generated content.
Key features
- Indexes AI chat histories locally in the browser
- Supports multiple assistants (ChatGPT, Claude, Gemini, etc.)
- Instant search across prompts, code snippets, and answers
- Links back to original conversations for easy retrieval
- No cloud sync, accounts, or tracking required
- Runs entirely on-device for privacy
- Cross-platform compatibility
- No third-party storage of sensitive data
Use cases
- Quickly retrieve past AI-generated code snippets for reuse
- Search through previous research prompts to refine current projects
- Privately review and reference prior AI conversations without cloud exposure
Pros
- Indexes and searches AI chat histories locally without cloud sync or accounts
- Supports semantic search across multiple AI assistants like ChatGPT, Claude, and Gemini
- Preserves privacy by keeping all data on-device and avoiding third-party storage
- Enables cross-platform retrieval of chat histories regardless of the AI assistant used
- Allows saving and reusing key passages as memories for future chats
Cons
- Requires local storage space for indexing chat histories
- Limited to supported AI platforms unless manual import is used
- Semantic search accuracy depends on local processing capabilities
Frequently asked questions about LLMnesia
What does LLMnesia do?
LLMnesia is a local-first Chrome extension that indexes and searches AI chat histories across platforms like ChatGPT, Claude, and Gemini. It captures conversations on-device, builds a private search index, and lets users retrieve past prompts, code snippets, and answers without cloud sync.
Who is LLMnesia designed for?
The tool is ideal for researchers, developers, writers, and heavy AI users who need to organize, reference, and reuse past AI-generated content while maintaining privacy. It benefits anyone who frequently revisits previous interactions to inform current work.
Does LLMnesia require an account or cloud storage?
No account is required for the free extension, and all indexing and search operations run entirely on-device. LLMnesia does not send conversation content to its servers or store data in the cloud.
Can LLMnesia connect to desktop AI tools?
Yes, LLMnesia supports connecting to desktop AI tools like Claude Desktop, Claude Code, and Cursor through MCP. This allows users to leverage existing chat history within those tools without starting tasks from zero.
How does LLMnesia handle privacy and data security?
All conversations are indexed and searched locally in the user's browser. LLMnesia does not create cloud copies of chat histories, and its MCP connector and search index operate entirely on-device to minimize data exposure risks.
What platforms does LLMnesia support?
LLMnesia supports over a dozen AI platforms, including ChatGPT, Claude, Gemini, DeepSeek, and Character.AI, with more added regularly. Users can request support for additional platforms via email.
