SecondBrain/cc-os-hub.md

type	title	summary	tags	scope	last_updated	date	source
hub	cc-os — personal cross-project memory system for Claude Code	Navigation hub for cc-os, the personal cross-project memory system for Claude Code (episodic memsearch + semantic SecondBrain vault via Graphify) and its family of global plugins (os-vault, os-adr, os-orchestration, os-doc-hygiene) — design, conventions, and eval results.	type/hub project/cc-os domain/knowledge-graphs domain/llm-evaluation tool/graphify tool/claude-code	global	2026-07-06	2026-07-06	cc-os

cc-os

cc-os (/home/jared/dev/cc-os) is a design-and-implementation repo for a personal, cross-project memory system for Claude Code, built for a multi-client freelancer. It splits memory into two systems — episodic (memsearch, "what happened, when") and semantic/knowledge (this vault, "how do we…", queried via Graphify) — and ships a family of global Claude Code plugins (os-vault, os-adr, os-orchestration, os-doc-hygiene) that operationalize conventions across every project, not just cc-os itself.

Design & decisions

• 2026-06-09-claude-code-memory-system-design — the two-layer architecture (episodic + semantic), hook-injected retrieval, freshness model.
• 2026-06-09-claude-code-memory-system-adrs — the 14-decision ADR log behind that design.
• 2026-06-09-graphify-evaluation-as-knowledge-layer — why Graphify was adopted as the knowledge-layer engine.
• vault-conventions — the vault's frontmatter contract, note types, and tag taxonomy (single source of truth; don't duplicate it elsewhere).
• cc-os-plugin-skill-naming-convention — os-[domain] plugin naming, verb-first skills, and the name:-field-in-SKILL.md registration gotcha.
• vault-backlog-pilot-plan / backlog-system-options-research — the cross-project backlog decision (Planka CE + thin Ruby CLI) adjacent to the vault's knowledge-layer role.

Graphify handbook

The verified reference handbook behind cc-os's chosen knowledge-graph engine: 2026-06-08-graphify-conceptual-model (mental model) · 2026-06-08-graphify-installation-setup · 2026-06-08-graphify-overview-concepts · 2026-06-08-graphify-ingesting-code-ast · 2026-06-08-graphify-ingesting-docs-knowledge · 2026-06-08-graphify-extraction-model-options · 2026-06-08-graphify-local-models-backends · 2026-06-08-graphify-querying-god-nodes · 2026-06-08-graphify-token-economics-updates · 2026-06-08-graphify-workflows-use-cases · 2026-06-08-graphify-best-practices-checklist.

Eval methodology and results

cc-os plugins are validated by held-out, unprompted-behavior evals rather than prompted demos. Start at eval-methodology-hub for the general methodology (ladder design, wording-loop procedure, production feedback loop). Concrete results:

• os-adr: 2026-07-03-os-adr-eval-b-grid-results-and-observations (2026-07-03 baseline; note: a duplicate slug-only file os-adr-eval-b-grid-results-and-observations.md also exists and is empty — likely a stale rename artifact, flagged here but not fixed as out of scope) → os-adr-eval-b-wording-experiment-hypotheses (wording loop, sonnet 8/8 / haiku 7/8) → os-adr-eval-c-frozen-grid-results (frozen ambiguity-ladder grid, 12/12 cells pass).
• os-orchestration: os-orchestration-ws1-session-audit-results (10-session IRL audit; found the CLAUDE_CODE_SUBAGENT_MODEL env override) → os-orchestration-eval-baseline-grid-results (E1–E3 baseline grid).
• os-vault: write-skill discrimination eval planned, not yet run — see docs/plans/ws2-os-vault-write-eval.md in the cc-os repo.

Related

• eval-methodology-hub — general evaluation methodology (not cc-os-specific, but built on and by cc-os plugin work).