Mcp
Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools
- Transport
- Not stated
- Package
- —
- Registry id
- dev.citadeldb/mcp
No install snippet on purpose. A working MCP config is a command, its arguments and an environment block — the last two are where API keys live, so this catalogue never stores them and cannot publish them. Follow the link above for the authors' own instructions.
Citadel is a local-first encrypted memory engine for AI agents, storing memory on-device and erasing it by destroying its key with a verifiable erasure receipt. It uses Argon2id, AES-256-CTR, HMAC-SHA256, BLAKE3 Merkle, and PRISM ANN for encryption and search. Citadel provides a Model Context Protocol (MCP) server so that Claude Desktop or any MCP client can read and write encrypted memory.
Hybrid recall combines vector ANN, BM25 keyword overlap, recency, and an optional cross-encoder reranker. Cryptographic forgetting erases data by destroying its key, not by overwriting, and produces a verifiable erasure receipt. The product includes full SQL support with FULL OUTER and LATERAL joins, recursive CTEs, triggers, materialized views, and JSON/JSONB.
Cross-platform bindings are available for Windows, Linux, macOS, Python, C FFI, and WebAssembly.
Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.