Mindspace: Open-Source Rust MCP Memory Server for Coding Agents With Source Provenance
MrViking2k19 · reddit · 2026-11-14
A developer set out to build a personal knowledge system for exploring fictional universes like Eragon — and detoured into Mindspace, a local-first, open-source memory and code-search tool written in Rust, now at v0.1.0-alpha.1.
Key features
- Persistent agent memory across sessions (create/retrieve/update/retire)
- Git repository ingestion with source-file and commit provenance
- Structural Rust code parsing and symbol lookup
- Evidence tracking: inspect where stored information came from
- MCP integration with Claude Code and Codex
- Model-free operation: deterministic parsing and lexical search, no LLM/embeddings/API keys/cloud; all local via SQLite, no daemon
Design goal: traceability — when an agent retrieves a project decision, you can see where that information came from rather than trusting isolated text.
Limitations: Linux x8664 only; Rust-only structural parsing; no EPUB/PDF/DOCX yet; lexical (not semantic) search; memories are explicitly created, no automatic capture. Source on GitHub (VikingOwl91/mindspace); feedback welcome.
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