entity

entity is a skill for Claude Code, Codex from edimuj/claude-mneme. It costs 45 tokens per session (184 once invoked), scanned A, original, MIT.

A search tool for Mneme, a project memory index, that finds information about files, functions, errors, and packages.

In plain words
What is it for?
Use it to look up an entity by name, review its mentions and recent activity, or list indexed entities by category.
Why use it?
It helps you check what the project has recorded about an entity instead of searching through files or past activity manually.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the claude-mneme plugin — 7 skills, 6 hooks shipped together

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.

agentmods
npx agentmods add skills/edimuj/claude-mneme/entity
Any agent
npx skills add edimuj/claude-mneme --skill entity
Clone the repo
git clone --depth 1 https://github.com/edimuj/claude-mneme

Made for: Claude Code, Codex.

Or install claude-mneme, the plugin that ships this one along with the rest of its 7 skills, 6 hooks.

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 entity

README.md
[![agentmods](https://agentmods.dev/badge/skills/edimuj/claude-mneme/entity.svg)](https://agentmods.dev/skills/edimuj/claude-mneme/entity)
Your own site
<a href="https://agentmods.dev/skills/edimuj/claude-mneme/entity"><img src="https://agentmods.dev/badge/skills/edimuj/claude-mneme/entity.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 184 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00045 $0.00184
Opus 5 $0.00023 $0.00092
Sonnet 5 $0.00009 $0.00037
Haiku 4.5 $0.00005 $0.00018

Measured 3d ago against content hash c3b2e65ca3de, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

entity 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 3d 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.

plugin/skills/entity/SKILL.md · 20 lines

What it actually says

Query the entity index for files, functions, errors, or packages:

# Search by name (partial match)
node "${CLAUDE_PLUGIN_ROOT}/scripts/mem-entity.mjs" $ARGUMENTS

# List all entities (optionally filtered)
node "${CLAUDE_PLUGIN_ROOT}/scripts/mem-entity.mjs" --list [--category files|functions|errors|packages]

Returns JSON with matches[]: each has name, category, mentions, lastSeen, contexts.

If no query provided, ask the user what entity to look up.

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. 3d ago First seen · 20 lines · 45 tokens per session scan A c3b2e65ca3de

Subscribe to this mod's changes

entity is a skill published in the GitHub repository edimuj/claude-mneme (3 stars, last pushed 3mo ago), licensed MIT. It adds 45 tokens to every session and 184 once invoked, about $0.0002 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 2026-08-31.

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