Rekal
Long-term memory for LLMs in a single SQLite file
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I got tired of repeating myself to my LLM every session. rekal is an MCP server that stores memories in SQLite and retrieves them with hybrid search (BM25 + vectors + recency decay). One file, local embeddings, no API keys.
HN · launched Apr 12, 2026 · 9 upvotes (top 45%) · 1 view
Niche: ai agent memory infrastructure · 350 launches, 11 in the last 7 days ▼ -58% · Explore this niche →
Category and tags
- Horizontal
- Data infrastructure
- Developer
- AI-native
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 350 launches in ai agent memory infrastructure →
Could you build this?
Yes Rekal is an MCP server written on top of SQLite, sqlite-vec / FTS5 for hybrid BM25 and vector search, and an embedded local model (e.g. fastembed/onnx). This is a well-scoped weekend developer tool that an AI assistant can easily generate.
Discussion
10 comments analyzed.
Concerns raised: Python 3.14 requirement may limit adoption, Effectiveness unclear - requires significant intervention to keep agents using guardrails, Fixed weights (0.4/0.4/0.2) may not suit different use cases
Feature requests: Make hybrid search weights configurable, Add config file support (pyproject.toml or .rekal/config.yml), Different decay rates for different memory types
Competitors
Other products that read as similar to this one : 63 launches clear the similarity bar, closest 8 shown.
Attention rank: #30 of 64 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 136 days after the earliest competitor.
- Remembrane · hn · 2026-08-07 · 13 upvotes · similarity 0.55
- Llm.sql · hn · 2026-04-24 · 8 upvotes · similarity 0.51
- A local-first memory store for LLM agents (SQLite) · hn · 2025-12-14 · 48 upvotes · similarity 0.43
- Continual Learning with .md · hn · 2026-04-13 · 34 upvotes · similarity 0.41
- Engrim · hn · 2026-09-07 · 92 upvotes · similarity 0.39
- Rekall · hn · 2026-08-12 · 5 upvotes · similarity 0.38
- Lightweight Task queue on Erlang/OTP, SQLite-backed, no overengineering · hn · 2026-06-10 · 75 upvotes · similarity 0.37
- Long term Memory and 50M token window for LLM · hn · 2026-10-09 · 6 upvotes · similarity 0.37
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