brain

A neuroscience-inspired cognitive architecture for Claude Code. Every major brain function is a standalone markdown region, orchestrated by the Thalamus router and injected via a SessionStart hook — giving you a personal cognitive layer across all projects.

Install as a Claude Code plugin. On every session start, the thalamus routing protocol is injected as context. It routes user prompts through a multi-phase signal processing pipeline modeled after the human brain:

User Prompt
    │
    ▼
[Sensory Buffer]              ← Phase 0: Raw input capture
    │
    ▼
[Basal Ganglia]               ← Phase 0.5: Depth classification + cached routines
    │                           SHALLOW → skip to Phase 5
    │                           MEDIUM  → Phases 0-3, 5
    │                           DEEP    → Full loop (0-6)
    ▼
[Neuromodulators]             ← Phase 0.75: Read cognitive mode (READ-ONLY)
    │
    ├──────────┼──────────┐
    ▼          ▼          ▼   ← Phase 1: Parallel dispatch
 Amygdala  Hippocampus  Language Center
    │          │          │
    └──────────┼──────────┘
               ▼
    integrated-context.md     ← Phase 2: Binding
               │
               ▼
    Prefrontal Cortex         ← Phase 3: Planning (CoT)
               │              ▲
               ▼              │ (feedback)
          motor-plan.md       │
               │              │
               ▼              │
          Cerebellum ─FAIL───►┘  ← Phase 4: Validation (DEEP only)
               │
             PASS
               │
               ▼
          Motor Cortex        ← Phase 5: Execution
               │
               ▼
          Hippocampus         ← Phase 6: Memory consolidation (DEEP only)

claude plugin add /path/to/brain-os

Or clone and link:

git clone <repo-url> ~/.claude/plugins/brain-os

If you were using Brain OS as a project-level CLAUDE.md with the