usage

usage is a command for Claude Code from ruvnet/ruv-FANN. It costs 0 tokens per session (249 once invoked), scanned A, original, MIT.

A command for checking how much persistent memory is being used across coding-agent sessions.

In plain words
What is it for?
Use it to inspect memory usage, with either a detailed or less detailed report.
Why use it?
It helps you see whether stored project decisions, context, and coordination patterns are being retained.

Command for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code.

Good fit Use it to inspect memory usage, with either a detailed or less detailed report.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/ruvnet/ruv-fann/usage
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/ruvnet/ruv-FANN

Made for: Claude Code.

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 usage

README.md
[![agentmods](https://agentmods.dev/badge/commands/ruvnet/ruv-fann/usage/github.svg)](https://agentmods.dev/commands/ruvnet/ruv-fann/usage)
Your own site
<a href="https://agentmods.dev/commands/ruvnet/ruv-fann/usage"><img src="https://agentmods.dev/badge/commands/ruvnet/ruv-fann/usage/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.

agentmods 80×15 button for usage

Your own site · 80×15
<a href="https://agentmods.dev/commands/ruvnet/ruv-fann/usage"><img src="https://agentmods.dev/badge/commands/ruvnet/ruv-fann/usage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 249 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 $0.00000 $0.00249
Opus 5 $0.00000 $0.00125
Sonnet 5 $0.00000 $0.00050
Haiku 4.5 $0.00000 $0.00025

Measured 8d ago against content hash 0edd74c229d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

usage 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.

.claude/commands/memory/usage.md · 43 lines

What it actually says

Memory Management

🎯 Key Principle

This tool coordinates Claude Code's actions. It does NOT write code or create content.

MCP Tool Usage in Claude Code

Tool: mcp__ruv-swarm__memory_usage

Parameters

{"detail": "detailed"}

Description

Track persistent memory usage across Claude Code sessions

Details

Memory helps Claude Code:

  • Maintain context between sessions
  • Remember project decisions
  • Track implementation patterns
  • Store coordination strategies that worked well

Example Usage

In Claude Code:

  1. Use the tool: mcp__ruv-swarm__memory_usage
  2. With parameters: {"detail": "detailed"}
  3. Claude Code then executes the coordinated plan using its native tools

Important Reminders

  • ✅ This tool provides coordination and structure
  • ✅ Claude Code performs all actual implementation
  • ❌ The tool does NOT write code
  • ❌ The tool does NOT access files directly
  • ❌ The tool does NOT execute commands

See Also

  • Main documentation: /claude.md
  • Other commands in this category
  • Workflow examples in /workflows/
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 · 43 lines · 0 tokens per session scan A 0edd74c229d5

Subscribe to this mod's changes

usage is a command published in the GitHub repository ruvnet/ruv-FANN (380 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 249 tokens. 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 2026-09-03.