A skill for storing and retrieving long-term coding-agent memory in an Obsidian vault, a folder of linked Markdown notes. It can read memories, append confirmed notes, and generate project or category summaries.

Use it to recall earlier work, record decisions or preferences, and maintain categorized project notes in Obsidian.

It keeps useful context from past sessions available without relying on the current conversation alone.

codian — Skill for Claude Code and Codex by zixiaomiao

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add zixiaomiao/Codian --skill hermes

Clone the repo

git clone --depth 1 https://github.com/zixiaomiao/Codian

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/zixiaomiao/codian/hermes/github.svg)](https://agentmods.dev/skills/zixiaomiao/codian/hermes)

Your own site

<a href="https://agentmods.dev/skills/zixiaomiao/codian/hermes"><img src="https://agentmods.dev/badge/skills/zixiaomiao/codian/hermes/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/zixiaomiao/codian/hermes"><img src="https://agentmods.dev/badge/skills/zixiaomiao/codian/hermes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 652 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00090	$0.00652
Opus 5.5	$0.00036	$0.00261
Sonnet 5.5	$0.00018	$0.00130
Haiku 4.5	$0.00009	$0.00065

Measured 1mo ago against content hash 0137409bfa99, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codian scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/obsidian_memory.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

hermes/SKILL.md · 91 lines

What it actually says

Codian Memory

把 Obsidian vault 作为长期记忆，支持读、写、摘要、分类。

脚本路径

Skill 自带的脚本在 <skill_dir>/scripts/obsidian_memory.py。

配置

首次使用 — 运行以下命令，输入你的 Obsidian vault 路径：

python3 <skill_dir>/scripts/obsidian_memory.py init

或者设置环境变量 OBSIDIAN_VAULT=/path/to/vault。

触发词

读取记忆 / 我之前做过什么
把这个记住 / 以后记住 / 记录到
更新会话总结 / 同步 Obsidian
初始化 Codian

Workflow

1. 读取记忆

python3 <skill_dir>/scripts/obsidian_memory.py read --query "<关键词>" --logs-limit 3

完整读取（仅在用户明确要求时）：

python3 <skill_dir>/scripts/obsidian_memory.py read --full

2. 写入记忆

写入前先确认内容：

python3 <skill_dir>/scripts/obsidian_memory.py append \
  --summary "<总结内容>" \
  --tags "#memory" \
  --source "当前 Hermes 会话" \
  --keywords "key1, key2"

3. 生成项目摘要

python3 <skill_dir>/scripts/obsidian_memory.py project-summary --max-logs 20

4. 生成分类记忆

python3 <skill_dir>/scripts/obsidian_memory.py memory-categories --max-logs 80

Vault 目录结构

Codian Memory/
  README.md
  AGENTS.md
  10-Context-上下文/        # 项目摘要
  20-Memory-记忆/           # 分类：decisions, todos, bugs, preferences
  30-Logs-日志/             # 会话日志
  40-Workflows-工作流/
  90-Archive-归档/

安全规则

不记录 API key、密码、token 等敏感信息
写入前先向用户确认内容
默认只读摘要 + 命中的日志，不全量展开历史

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/obsidian_memory.py 29 KB runs code

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 91 lines · 90 tokens per session scan A 0137409bfa99

Subscribe to this mod's changes

codian is a skill published in the GitHub repository zixiaomiao/Codian (5 stars, last pushed 4mo ago), licensed MIT. It adds 90 tokens to every session and 652 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Memory and context

knowledge-ingest

Ingest documents, articles, conversations, or supplied text into Knowledge with retained originals, sourced claims, entity updates, timelines, and cross-links; also learn durable lessons from a set of conversations, transcripts, or past sessions (/learn), including the Learn from conversations and Learn from Memory…

openclaw/openclaw · 79 tokens

forget

Remove a personal fact, preference, relationship detail, topic, or prior event from Muse's active memory and stop existing copies or automations from bringing it back. Use for explicit requests such as 'forget that', 'don't remember this about me', or 'remove that from your memory'. Do not use when 'forget it' merely…

asgeirtj/system_prompts_leaks · 74 tokens

mem0-oss-to-platform

Plan, then execute, a migration of a project from the mem0 open-source / self-hosted SDK (local Memory class) to the mem0 Platform / hosted SDK (MemoryClient). TRIGGER when: the developer wants to move, switch, or migrate mem0 off OSS/self-hosted to the hosted API, e.g. "migrate my mem0 setup to the platform", "switch…

mem0ai/mem0 · 217 tokens

Cortex

LifeOS memory, prior-session recall, and learning capture. USE WHEN capture this learning, document this learning, what did we learn recently, recent learnings, cortex, knowledge, knowledge base, search knowledge, what do we know about, archive, harvest, knowledge status, develop note, add to knowledge, add a people…

danielmiessler/LifeOS · 184 tokens

memory

Use when the user asks to remember, recall, forget, update, search, or inspect durable OpenSquilla memory, including profile facts in USER.md and long-term notes in MEMORY.md or memory//.md.

opensquilla/opensquilla · 44 tokens

ha-data-stores

Map of Hope Agent's local data stores and safe read-only query workflow. Use when the user asks where Hope Agent stores data, wants to inspect sessions/messages/memory/logs/background jobs/knowledge indexes/settings, asks the model to query local app data, or debugging requires checking persisted state. Trigger…

shiwenwen/hope-agent · 115 tokens