user-enumeration

user-enumeration is a skill for Claude Code, Codex from NeoTheCapt/RedteamAgent. It costs 35 tokens per session (2,961 once invoked), scanned C, original, no licence file.

A security-testing skill for finding user-account checks that respond differently when an account exists or does not exist. It works across HTTP, WebSocket, GraphQL, gRPC, and other interfaces.

In plain words
What is it for?
Use it to test login, signup, password-reset, and account lookup interfaces for observable differences between existing and unknown users.
Why use it?
It helps reveal user enumeration, where attackers can learn which usernames or email addresses are registered. This can make targeted attacks and account discovery easier.

Skill for Claude CodeCodex

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/neothecapt/redteamagent/user-enumeration
Any agent
npx skills add NeoTheCapt/RedteamAgent --skill user-enumeration
Clone the repo
git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent

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.

agentmods badge for user-enumeration

README.md
[![agentmods](https://agentmods.dev/badge/skills/neothecapt/redteamagent/user-enumeration.svg)](https://agentmods.dev/skills/neothecapt/redteamagent/user-enumeration)
Your own site
<a href="https://agentmods.dev/skills/neothecapt/redteamagent/user-enumeration"><img src="https://agentmods.dev/badge/skills/neothecapt/redteamagent/user-enumeration.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,961 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
Origin unknown 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 $0.00035 $0.02961
Opus 5 $0.00017 $0.01481
Sonnet 5 $0.00007 $0.00592
Haiku 4.5 $0.00003 $0.00296

Measured 3d ago against content hash e94de5273061, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

user-enumeration scanned grade C with 2 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

trap 'rm -rf "$TMPDIR_ENUM"' EXIT

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `run_tool curl` — HTTP request crafting and timing measurement
agent/skills/user-enumeration/SKILL.md · 306 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 306 lines · 35 tokens per session scan C e94de5273061

Subscribe to this mod's changes

user-enumeration is a skill published in the GitHub repository NeoTheCapt/RedteamAgent (122 stars, last pushed 1mo ago), with no licence file. It adds 35 tokens to every session and 2,961 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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