Have I Been Pwned: Check if your email address has been exposed in a data breach
Have I Been Pwned (HIBP) is a data breach search and notification service used by security teams, developers, and MSPs worldwide. Search tens of billions of breached records, monitor corporate domains via API, and get alerted when new breaches appear.
35
Basic
Agentic Readiness Score
+20 OpenAPI
+10 MCP
missing +25 llms.txt
Raise this score to 95+
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security
searchemailnotificationssecurityopenapiapimcpmessaging
Agentic Signals
llms.txt
Not found
ai-plugin.json
Not found
OpenAPI Spec
Found
Structured API
Not found
Not specified
Schema.org Markup
Found
MCP Server
Found
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OpenAPI Spec (preview)
{
"openapi": "3.0.3",
"info": {
"title": "Have I Been Pwned API v3",
"description": "Version 3 of the Have I Been Pwned API. Authenticated APIs for breaches by account, pastes, domain search, domain verification, stealer logs, and subscription status require both the hibp-api-key and user-agent headers. Availability varies by subscription tier and is noted per operation. The Pwned Passwords range API is free and does not require authentication.",
"version": "3.0.0",
"license"