How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Have I Been Pwned

Have I Been Pwned Breached Accounts API

Lookup breaches affecting an email address.

Documentation Provider Profile APIs.io OpenAPI GitHub

Have I Been Pwned Breached Accounts API is one of 22 APIs that Have I Been Pwned publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Breached Accounts. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 2 operations across 2 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 3.0.0.

Requests are made against a single base URL, https://haveibeenpwned.com/api/v3.

2 operations 2 paths 4 schemas 2 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3.0.0
Base URL
https://haveibeenpwned.com/api/v3
Authentication
API Key
Contact
Have I Been Pwned
License
Creative Commons Attribution 4.0
Resource Areas
1

Authentication & Security 1

Have I Been Pwned Breached Accounts API declares 1 security scheme for authenticating requests. An API key is passed in the header as hibp-api-key (ApiKeyAuth). By default, every request must be authenticated.

  • ApiKeyAuth — 32-character hexadecimal API key issued at https://haveibeenpwned.com/API/Key. Required for all account, paste, stealer log, domain search, and subscription en…

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.

Breached Accounts 2

Lookup breaches affecting an email address.

GET
/breachedaccount/{account}
Get Breaches For An Account
getBreachesForAccount 4 params → 200400401403404429
GET
/breachedaccount/range/{hashPrefix}
Get Breaches By K-Anonymity Range
getBreachesByRange 1 param → 200401403429

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are Breach (19 properties), Error (2 properties), BreachedAccountRangeEntry (2 properties), BreachName (1 property). Each schema is shown below with its type and property counts.

BreachedAccountRangeEntry
object
A k-anonymity breached-account match.
2 properties 2 required
Breach
object
Full metadata record describing a breach in HIBP.
19 properties 7 required
Error
object
Standard HIBP error payload.
2 properties 2 required
BreachName
object
Truncated breach representation returned by default from /breachedaccount.
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

have-i-been-pwned-breached-accounts-api-openapi.yml Raw ↑

Other APIs Have I Been Pwned publishes across the network.

Have I Been Pwned API v3
AE Profile APIs.io
Pwned Passwords API
AE Profile APIs.io
Have I Been Pwned Breach API
AE Profile APIs.io
Have I Been Pwned Breachedaccount API
AE Profile APIs.io
Have I Been Pwned Breacheddomain API
AE Profile APIs.io
Have I Been Pwned Breaches API
AE Profile APIs.io
Have I Been Pwned Dataclasses API
AE Profile APIs.io
Have I Been Pwned Domainverification API
AE Profile APIs.io
Have I Been Pwned Latestbreach API
AE Profile APIs.io
Have I Been Pwned Pasteaccount API
AE Profile APIs.io
Have I Been Pwned Range API
AE Profile APIs.io
Have I Been Pwned Stealerlogsbyemail API
AE Profile APIs.io
#Breached Accounts
← Back to H APIs
API Details
ID
have-i-been-pwned:have-i-been-pwned-breached-accounts-api
Base URL
https://haveibeenpwned.com/api/v3
Docs
https://haveibeenpwned.com/API/v3
Provider
Have I Been Pwned
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=have-i-been-pwned-breached-accounts-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/have-i-been-pwned-breached-accounts-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

This is an independent, third-party profile of Have I Been Pwned Breached Accounts API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.