Build and run agents you can see, understand and trust.
hippo-memory
Biologically-inspired memory for AI agents. Decay, retrieval strengthening, consolidation. Zero runtime deps, SQLite, MCP. Benchmarked retrieval with an opt-in hosted TypeSafe Jev reranker.
Project facts
- Relationship to Jev
- Integration
- Evidence
- Documented
- Language
- TypeScript
- License
- MIT
- Origin
- Original repository
- Repository status
- Not archived
- Created
- 2026-03-15
- GitHub stars
- 756
- Evidence checked
- 2026-09-24T08:40:10.508Z
- Metadata checked
- 2026-09-24T08:40:10.508Z
- Check status
- current
Stars measure the whole repository, including work unrelated to Jev.
Evidence and scope
Documented records the linked documentation or source. JevHunt has not independently run or benchmarked this project.
- **R@1 0.41 to 0.62 with `hippo recall "" --reranker jev`** on a private 300-query developer store ([full eval]). The opt-in [TypeSafe Jev] reranker, off by default, about 0.0004 USD a recall. 2000-draw paired bootstrap; the margin held in 20 of 20 seeds and a permutation null reached it in 0 of 200 runs. Ranking only: three graded tests did **not** show a better answer rate than the free local cross-encoder, and that negative result is in the same doc. What it buys today is a shorter context,
Evidence commit: 39dc65cdd620925c2e58828c017af1c8ae40ce0f
Discovered through: typesafe-field-guide.
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