Cortex — Darwinian memory on Arkiv

Observations are RaBitQ-compressed and sealed before they reach Braga. When an agent cites a memory in a decision, Cortex extends its expiration. What never gets cited decays — no manual cleanup.

[ 01 ]What you get

Memories that behave like human memory — forget like humans do.

recall(query, k)act(action, citations[])Wallet-derived encryption

[ 02 ]Memory lifecycle

01 / 04

Working1-hour lease

Extends on citation

Working

New observations start here: RaBitQ-compressed, sealed, written to Arkiv. Uncited memories expire within about an hour.

01 · 1-hour lease

Episodic

02 · +7 days

Semantic

03 · 1-year rule

Cold archive

04 · local mirror

[ 03 ]Install

1 · Add it to Claude Code (once)

Cortex ships as a Claude Code plugin. Two commands, then it auto-loads in every session — no flags, no manual steps.

# in Claude Code:
/plugin marketplace add LingSiewWin/Cortex
/plugin install cortex-memory

Requires bun. At session start it recalls your project's memory; as you work it captures to Arkiv before context compacts.

2 · Point it at your wallet

Memories are sealed with a key derived from your wallet and written to Arkiv — owned by you, not us.

SESSION_KEY_PRIVATE_KEY=0x…   # signs Arkiv writes (pays GLM gas)
CORTEX_USER_SIGNATURE=0x…     # derives your encryption key
OPENROUTER_API_KEY=…          # embeddings (or COHERE_API_KEY)

Need test GLM? Braga faucet. Prefer to watch first?

[ 04 ]On Braga testnet

Cost per memory

Ultra-low

GLM gas on Braga testnet · priced as bytes × expiration, not flat storage rent

Your memory

Privacy

Wallet-owned on Arkiv — connect in the console to see your graph, tiers, and recall

Compression

—

RaBitQ · 1536-d embeddings

[ 05 ]How it fits Arkiv

      ◇
     ╱ ╲
    ╱6KB╲
    ╲   ╱
     ╲ ╱
      │
      ◆
   ┌─────┐
   │200B │
   └──┬──┘
      │ cite
   ┌──▼──┐
   │ ext │
   └─────┘

Arkiv stores bytes × lifetime. Agent embeddings are naturally large (~6 KB each at full float width). Cortex stores a RaBitQ-compressed fingerprint (~200 B) plus attributes, and only pays to extend entities the agent cites — accumulative extend, not a naive “add 24 hours”.

Payloads are encrypted client-side; Braga holds ciphertext. Your local SQLite mirror catches every event so you can rebuild if a host goes away — see bun scripts/sovereignty-proof.ts.

[ 06 ]Trust assumptions

  ┌─────────┐
  │ session │─┐
  │  EIP712 │ │
  └─────────┘ │
        ┌─────▼─────┐
        │  wallet   │
        │  $owner   │
        └─────┬─────┘
              │◇
          ┌───▼───┐
          │ AES   │
          └───────┘

Session-key relayer. The autonomous loop signs with a backend session key, bounded by EIP-712 SessionAuthorization. Your wallet remains $owner.
Browser uploads are yours. File store and key adoption use your wallet on Braga; we never hold your derivation secret.
Semantic tier capped at one year. Until Arkiv's fee model is final, we do not promise multi-year leases.
No “fully decentralised” marketing. Braga is a testnet with operated infrastructure. We describe what ships today.