Memory Store
https://www.ycombinator.com/companies/memory-store
YC P26 (Spring 2026). Unified memory layer so all agents on a team share one persistent context — meetings, Claude sessions, Slack threads all become queryable. Solves the "goldfish brain" problem of every session starting from zero.
At a glance
- Type
- Cross-agent shared episodic + preference memory
- Tier
- T2
- Section
- Dedicated memory layers
- Created
- searched not found
- Latest release
- not applicable — not OSS
- License
- not applicable — not OSS
- GitHub
- not applicable — no GitHub repo
- Pricing
- searched not found
- Funding
- searched not found
Taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- cross-session
- update
- extraction
- unit
- episode
- governance
- opaque
- conflict
- none
When to use
Optimised for: cross-agent shared episodic + preference memory
Anti-fit: searched not found
Pros & cons
Pros
Lightweight key-value memory abstraction; minimal complexity for simple agents.
Cons
Limited capability ceiling; not appropriate for sophisticated agent memory needs.
Claims & capabilities
YC P26. Very early stage.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- searched not found
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- not documented publicly
- A2A
- not documented publicly
- OpenTelemetry
- not documented publicly
Similar systems
Other dedicated memory layers in the catalog, ranked by inbound references.
- Mem0 T1
Universal memory layer for AI agents. Three concurrent stores (vector + graph + KV); LLM-extracted facts; concurrent retrieval via ThreadPoolExecutor.
- Zep & Graphiti T1
Bi-temporal knowledge graph (event time + ingestion time). Strong on chronological reasoning and contradiction tracking. Graphiti is the open-source core.
- Cognee T1
"Extract–Cognify–Load" pipeline that turns raw input into a typed, queryable knowledge graph for agent recall.
- Hindsight (Vectorize) T1
Standalone memory service from Vectorize. Open source. Biomimetic four-network design (World, Bank, Observation, Opinion). Ships an MCP memory server.
- Memvid T2
Single-file memory layer (one .mv2 file). No DB, no server. Append-only sequence of immutable Smart Frames with timestamps + checksums. Native Rust core (rewritten from Python).
- Supermemory T1
Memory engine with API, app, browser extension, and MCP server. Extracts facts, tracks updates, resolves contradictions, auto-forgets expired info. Plugins for Claude Code, OpenCode, OpenClaw, Hermes.