What is Parametric Memory?
Parametric Memory is a dedicated memory service for AI agents. It gives Claude — and any other MCP-compatible AI — a persistent memory that survives between sessions, can be verified with cryptographic proofs, and gets smarter the more you use it.
This is not a vector store. It is not a notes file. It is structured, tamper-evident memory with a Markov prediction layer that learns your patterns and pre-fetches what you're about to need.
The three guarantees
| Guarantee | How it works |
|---|---|
| Persistent | Atoms (named facts) survive indefinitely across sessions. Your AI picks up exactly where it left off. |
| Verifiable | Every stored atom is hashed into an RFC 6962 Merkle tree. You can verify any recalled fact was actually stored — no hallucinated memory. |
| Predictive | A PPM Markov model learns from your recall patterns. It achieves a 64% average hit rate pre-fetching atoms you're about to need, reducing latency to near zero. |
How memory actually works
Everything stored in Parametric Memory is an atom — a key/value pair with a namespaced key like v1.fact.my_database_url.
When you store an atom:
- The value is hashed (SHA-256) and inserted into a Merkle tree for your shard
- The Markov model records which atoms were accessed before and after this one
- Future sessions that touch nearby keys will have this atom pre-fetched automatically
When you recall atoms:
- The system returns matching atoms plus a Merkle proof for each one
- You (or your AI) can verify the proof against the tree root — confirming the fact was not altered
- The Markov model notes this recall and strengthens the arc weights for related atoms
Your dedicated instance
Every paid subscriber gets their own isolated memory substrate — a containerised instance running on our infrastructure. Your atoms never share compute or storage with another customer.
- Starter / Solo / Professional plans — shared host, isolated container per customer
- Team plan — dedicated DigitalOcean droplet, isolated at the machine level
Your instance has its own domain, SSL certificate, and MCP endpoint.
What it's not
- Not a file store — atoms are small named facts, not binary blobs
- Not a chat history — it stores structured knowledge, not conversation logs
- Not a RAG pipeline — there are no embeddings or cosine similarity; recall is exact key lookup or semantic search over structured fields
- Not a database — it is an append-only memory layer optimised for AI agent patterns
Next steps
- Plans & Trial — see what each tier includes and how the 14-day trial works
- Your Instance & API Key — how to find your MCP endpoint and claim your API key
- Claude Desktop & Cowork — connect your instance to Claude in under 5 minutes