csm-agentbook

csm-agentbook is a command for Claude Code from NovasPlace/CSM. It costs 13 tokens per session (146 once invoked), scanned A, original, MIT.

A project command for viewing AgentBook state and recent events. AgentBook is a record of the system's current rules and activity.

In plain words
What is it for?
Reviewing current AgentBook state, checking recent events, or managing rules when specifically requested.
Why use it?
It makes the system's stored state and recent changes easier to inspect, while rule changes remain explicit.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the cross-session-memory plugin — 2 skills, 12 commands, 3 agents shipped together

Good fit Reviewing current AgentBook state, checking recent events, or managing rules when specifically requested.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/novasplace/csm/csm-agentbook
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.

Clone the repo
git clone --depth 1 https://github.com/NovasPlace/CSM

Made for: Claude Code.

Or install cross-session-memory, the plugin that ships this one along with the rest of its 2 skills, 12 commands, 3 agents.

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.

agentmods badge for csm-agentbook

README.md
[![agentmods](https://agentmods.dev/badge/commands/novasplace/csm/csm-agentbook.svg)](https://agentmods.dev/commands/novasplace/csm/csm-agentbook)
Your own site
<a href="https://agentmods.dev/commands/novasplace/csm/csm-agentbook"><img src="https://agentmods.dev/badge/commands/novasplace/csm/csm-agentbook.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 146 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00013 $0.00146
Opus 5 $0.00006 $0.00073
Sonnet 5 $0.00003 $0.00029
Haiku 4.5 $0.00001 $0.00015

Measured 8d ago against content hash 0909dbf237c7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

csm-agentbook 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 8d ago.

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.

plugins/cross-session-memory/commands/csm-agentbook.md · 12 lines

What it actually says

Show AgentBook $ARGUMENTS.

  1. Resolve projectRoot to the current workspace root.
  2. Call csm_agentbook_state for the current state and csm_agentbook_events for recent activity.
  3. Only manage rules via csm_agentbook_rule — a mutation — when the user explicitly asks to add or change an AgentBook rule.
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.

  1. 8d ago First seen · 12 lines · 13 tokens per session scan A 0909dbf237c7

Subscribe to this mod's changes

csm-agentbook is a command published in the GitHub repository NovasPlace/CSM (42 stars, last pushed today), licensed MIT. It adds 13 tokens to every session and 146 once invoked, about $0.0001 per session on Opus 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 2026-08-30.