haveibeenpwned

haveibeenpwned is a skill for Claude Code, Codex from rawveg/skillsforge-marketplace. It costs 28 tokens per session (3,865 once invoked), scanned A, original, no licence file.

Documentation for the Have I Been Pwned API, a service that checks whether email accounts or passwords appeared in known data breaches.

In plain words
What is it for?
Use it to check email addresses or passwords against reported data breaches.
Why use it?
It helps identify compromised account information so users can take protective action.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to check email addresses or passwords against reported data breaches.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rawveg/skillsforge-marketplace/haveibeenpwned
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 rawveg/skillsforge-marketplace --skill haveibeenpwned
Clone the repo
git clone --depth 1 https://github.com/rawveg/skillsforge-marketplace

Made for: Claude Code, Codex.

Its marketplace also offers this one on its own, as the plugin haveibeenpwned/plugin install haveibeenpwned after adding the marketplace above.

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 haveibeenpwned

README.md
[![agentmods](https://agentmods.dev/badge/skills/rawveg/skillsforge-marketplace/haveibeenpwned/github.svg)](https://agentmods.dev/skills/rawveg/skillsforge-marketplace/haveibeenpwned)
Your own site
<a href="https://agentmods.dev/skills/rawveg/skillsforge-marketplace/haveibeenpwned"><img src="https://agentmods.dev/badge/skills/rawveg/skillsforge-marketplace/haveibeenpwned/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 haveibeenpwned

Your own site · 80×15
<a href="https://agentmods.dev/skills/rawveg/skillsforge-marketplace/haveibeenpwned"><img src="https://agentmods.dev/badge/skills/rawveg/skillsforge-marketplace/haveibeenpwned.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,865 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00028 $0.03865
Opus 5 $0.00014 $0.01932
Sonnet 5 $0.00006 $0.00773
Haiku 4.5 $0.00003 $0.00386

Measured 12d ago against content hash acbec7e3ae02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

haveibeenpwned scanned grade A with 1 finding 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 12d 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.

Makes network callslowCapability

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

response = requests.get(url, headers=headers)
haveibeenpwned/SKILL.md · 480 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

Files

What ships with it

3 files 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.

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. 12d ago First seen · 480 lines · 28 tokens per session scan A acbec7e3ae02

Subscribe to this mod's changes

haveibeenpwned is a skill published in the GitHub repository rawveg/skillsforge-marketplace (40 stars, last pushed 6mo ago), with no licence file. It adds 28 tokens to every session and 3,865 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (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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