Have I Been Pwned
REMOTE · HAVEIBEENPWNED.COM · SCANNED SEP 21
Breach intelligence API: email search, domain monitoring, passwords and stealer logs.
Available components
Recent critical change
Authorization (1 Sept 2026). See the changelog before you install this server.
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security66
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (hibp_send_domain_verification_email). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability87
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 22320 tokens (~21/item across 1059 items; 17 tools + 1042 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 19 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Have I Been Pwned MCP server?
Have I Been Pwned is a hosted endpoint at https://haveibeenpwned.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · haveibeenpwned.com
claude mcp add --transport http troyhunt-hibp 'https://haveibeenpwned.com/mcp'
{
"mcpServers": {
"troyhunt-hibp": {
"url": "https://haveibeenpwned.com/mcp"
}
}
} {
"servers": {
"troyhunt-hibp": {
"type": "http",
"url": "https://haveibeenpwned.com/mcp"
}
}
} [mcp_servers.troyhunt-hibp] url = "https://haveibeenpwned.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"troyhunt-hibp": {
"type": "remote",
"url": "https://haveibeenpwned.com/mcp",
"enabled": true
}
}
} openclaw mcp add troyhunt-hibp --url 'https://haveibeenpwned.com/mcp' --transport streamable-http
mcp_servers:
troyhunt-hibp:
url: "https://haveibeenpwned.com/mcp" {
"McpServers": {
"troyhunt-hibp": {
"Transport": "http",
"Url": "https://haveibeenpwned.com/mcp"
}
}
} assistant mcp add troyhunt-hibp -t streamable-http -u 'https://haveibeenpwned.com/mcp'
{
"mcpServers": {
"troyhunt-hibp": {
"type": "http",
"url": "https://haveibeenpwned.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 14 Sept 26 0
- New resource “Chess2026” functional
- 10 Sept 26 0
- New resource “McKesson” functional
- 3 Sept 26 0
- New resource “ManchesterAirportsGroup” functional
- 1 Sept 26 −7
- Authorization: partial → fail ▼ critical
- Tool “hibp_generate_domain_verification_dns_token” rewrote its description, which is the text the model reads security
- Tool “hibp_send_domain_verification_email” is now declared destructive security
- New resource “Questel” functional
- 28 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “hibp_get_breached_account” rewrote its description, which is the text the model reads security
- Tool “hibp_get_breached_account_range” rewrote its description, which is the text the model reads security
- Tool “hibp_get_paste_account” rewrote its description, which is the text the model reads security
- Tool “hibp_get_stealer_logs_by_email” rewrote its description, which is the text the model reads security
- Tool “hibp_get_stealer_logs_by_email_domain” rewrote its description, which is the text the model reads security
- Tool “hibp_get_stealer_logs_by_website_domain” rewrote its description, which is the text the model reads security
- Tool “hibp_get_subscription_status” rewrote its description, which is the text the model reads security
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
- MCP protocol version: 2025-11-25 → 2026-07-28 functional
- “hibp_generate_domain_verification_dns_token” reworded the description of “response_format” cosmetic
- “hibp_get_breach” reworded the description of “response_format” cosmetic
- “hibp_get_breached_account” reworded the description of “response_format” cosmetic
- “hibp_get_breached_account_range” reworded the description of “prefix” cosmetic
- “hibp_get_breached_account_range” reworded the description of “response_format” cosmetic
- “hibp_get_breached_domain” reworded the description of “response_format” cosmetic
- “hibp_get_latest_breach” reworded the description of “response_format” cosmetic
- “hibp_get_paste_account” reworded the description of “response_format” cosmetic
- “hibp_get_pwned_passwords_range” reworded the description of “response_format” cosmetic
- “hibp_get_stealer_logs_by_email” reworded the description of “response_format” cosmetic
- “hibp_get_stealer_logs_by_email_domain” reworded the description of “response_format” cosmetic
- “hibp_get_stealer_logs_by_website_domain” reworded the description of “response_format” cosmetic
- “hibp_get_subscription_status” reworded the description of “response_format” cosmetic
- “hibp_list_breaches” reworded the description of “response_format” cosmetic
- “hibp_list_data_classes” reworded the description of “response_format” cosmetic
- “hibp_list_subscribed_domains” reworded the description of “response_format” cosmetic
- “hibp_send_domain_verification_email” reworded the description of “response_format” cosmetic
- “hibp_verify_domain_verification_dns_token” reworded the description of “response_format” cosmetic
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +1
- Stability: 0.97 → pass security
- 24 Aug 26 0
- New resource “NIUS” functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 21 Sept 2026 · Probed https://haveibeenpwned.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=haveibeenpwned.com | CN=WE1,O=Google Trust Services,C=US | 3 Sept 2026 | 2 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 489284f95144d0c20eabfb669f77242b |
| SANs: haveibeenpwned.com, cache.haveibeenpwned.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of haveibeenpwned.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| haveibeenpwned.com. | present | 2371 | 13 | Verified |
| haveibeenpwned.com. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| permissions-policy | accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=(), interest-cohort=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://haveibeenpwned.com/mcp | Verified | 200 | |
| http (plaintext) | http://haveibeenpwned.com/mcp | HTTPS enforced | 301 | https://haveibeenpwned.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
hibp_generate_domain_verification_dns_token Have I Been Pwned - Generate Domain Verification DNS Token ~104
Generate the TXT record value required to verify domain control via DNS, creating or reusing the private HIBP domain-verification records needed for the request. Requires an authenticated subscription with domain-verification access.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The domain to generate a verification token for. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
| txtRecordValue | string | – | – |
No examples provided.
hibp_get_breach Have I Been Pwned - Breach ~80
Look up a single public HIBP breach by its canonical breach name, such as Adobe.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | The breach name to retrieve, for example Adobe. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| breach | object | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
No examples provided.
hibp_get_breached_account Have I Been Pwned - Breached Account ~188
Search HIBP for breaches affecting a single email address. Requires an OAuth bearer token linked to an active HIBP API subscription; use domain and verification filters to refine the result.
| Name | Type | Req | Description |
|---|---|---|---|
| account | string | yes | The email address to search for. |
| domain | string | – | Filter results to a specific breach domain. |
| includeUnverified | boolean | – | Include unverified breaches. Defaults to true. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| responseMode | string | – | Choose full breach objects, truncated objects, or breach names. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| account | string | – | – |
| breaches | array | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| responseMode | string | – | – |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_breached_account_range Have I Been Pwned - Breached Account Range ~190
Query the authenticated HIBP k-anonymity breached-account range endpoint with the first 6 characters of a SHA-1 email hash. Requires a subscription with k-anonymity access; compare each returned suffix with the remaining hash characters locally because a prefix alone cannot identify an account.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| prefix | string | yes | The first 6 hexadecimal characters of the SHA-1 hash of an email address. Compare each returned suffix with the remaining 34 characters locally; a prefix alone does not identify an account. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| matchCount | integer | – | – |
| matches | array | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| prefix | string | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_breached_domain Have I Been Pwned - Breached Domain ~119
Return breached aliases for a verified domain. This tool requires an authorized subscription via OAuth bearer token.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The verified domain to search. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| aliasCount | integer | – | – |
| breachesByAlias | object | – | – |
| domain | string | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_latest_breach Have I Been Pwned - Latest Breach ~60
Return the most recently added public breach currently loaded into HIBP.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| breach | object | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
No examples provided.
hibp_get_paste_account Have I Been Pwned - Paste Account ~136
Search for public pastes containing a single email address. Requires an OAuth bearer token linked to an active HIBP API subscription; run this separately from breached-account lookup.
| Name | Type | Req | Description |
|---|---|---|---|
| account | string | yes | The email address to search for pastes. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| account | string | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| pastes | array | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_pwned_passwords_range Pwned Passwords Range Search ~189
Query the public Pwned Passwords k-anonymity API with a 5-character SHA-1 or NTLM prefix and return matching suffixes with prevalence counts.
| Name | Type | Req | Description |
|---|---|---|---|
| addPadding | boolean | – | Send the Add-Padding header and discard padded zero-count entries. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| mode | string | – | Use SHA-1 by default or NTLM when mode is set to ntlm. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| prefix | string | yes | The first 5 hexadecimal characters of a SHA-1 or NTLM hash. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| addPadding | boolean | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| matchCount | integer | – | – |
| matches | array | – | – |
| message | string | – | Present when the tool returns an error. |
| mode | string | – | – |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| prefix | string | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_stealer_logs_by_email Have I Been Pwned - Stealer Logs by Email ~142
Return website domains historically observed in stealer logs for an email address. Requires an OAuth-linked active subscription with the stealer-log feature; results do not establish current account access.
| Name | Type | Req | Description |
|---|---|---|---|
| string | yes | The email address to search for in stealer logs. | |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| domains | array | – | – |
| string | – | – | |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_stealer_logs_by_email_domain Have I Been Pwned - Stealer Logs by Email Domain ~147
Return email aliases and associated website domains historically observed in stealer logs for an email domain. Requires an OAuth-linked active subscription with the stealer-log feature; results do not establish current account access.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The email domain to search for in stealer logs. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| aliasCount | integer | – | – |
| aliases | object | – | – |
| domain | string | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_stealer_logs_by_website_domain Have I Been Pwned - Stealer Logs by Website Domain ~144
Return email addresses historically observed in stealer logs for a website domain. Requires an OAuth-linked active subscription with the stealer-log feature; results do not establish current account access.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The website domain to search for in stealer logs. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | – | – |
| emails | array | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_get_subscription_status Have I Been Pwned - Subscription Status ~86
Return the current plan, quotas, rate limits, expiry, and feature flags for the active HIBP API subscription linked to the authenticated OAuth connection. Use it to confirm access before feature-dependent lookups.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
| subscription | object | – | – |
No examples provided.
hibp_list_breaches Have I Been Pwned - Breaches ~159
List public HIBP breaches, optionally filtered by domain, spam-list flag, and verification status.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | – | Filter to breaches for a specific domain. |
| includeUnverified | boolean | – | Include unverified breaches. Defaults to true. |
| isSpamList | boolean | – | Filter to breaches that are or are not flagged as spam lists. |
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| breaches | array | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| totalCount | integer | – | – |
No examples provided.
hibp_list_data_classes Have I Been Pwned - Data Classes ~65
List the data classes used across public HIBP breach models, such as email addresses or passwords.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| dataClasses | array | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
No examples provided.
hibp_list_subscribed_domains Have I Been Pwned - Subscribed Domains ~99
List the domains associated with the authenticated HIBP subscription.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum number of items to include in the response. Defaults to 25. |
| offset | integer | – | Number of items to skip before returning results. Defaults to 0. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| guidance | string | – | Additional guidance for resolving the tool error. |
| hasMore | boolean | – | – |
| limit | integer | – | – |
| message | string | – | Present when the tool returns an error. |
| nextOffset | integer | – | – |
| offset | integer | – | – |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| returnedCount | integer | – | – |
| statusCode | integer | – | Present when the tool returns an error. |
| subscribedDomains | array | – | – |
| totalCount | integer | – | – |
No examples provided.
hibp_send_domain_verification_email Have I Been Pwned - Send Domain Verification Email ~106
Send a domain verification email to an approved alias such as admin or security. Requires an authenticated subscription with domain-verification access.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The domain to verify by email. |
| emailAlias | string | yes | The approval alias to send the verification email to, for example admin. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | – | – |
| emailAlias | string | – | – |
| emailSent | boolean | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
No examples provided.
hibp_verify_domain_verification_dns_token Have I Been Pwned - Verify Domain Verification DNS Token ~88
Complete domain verification by checking the expected HIBP TXT record on the target domain. Requires an authenticated subscription with domain-verification access.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The domain to verify by DNS. |
| response_format | string | – | Format only the text content as markdown (default) or a JSON string. The same machine-readable data is always returned in structuredContent. |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | – | – |
| guidance | string | – | Additional guidance for resolving the tool error. |
| message | string | – | Present when the tool returns an error. |
| rateLimitResetAt | string | – | UTC timestamp indicating when the current rate limit window should have reset. |
| retryAfterHeaders | object | – | Retry headers that mirror the standard HTTP rate-limit response when applicable. |
| retryAfterSeconds | integer | – | How long to wait before retrying, when the tool is rate limited. |
| statusCode | integer | – | Present when the tool returns an error. |
| verified | boolean | – | – |
No examples provided.
What is the Have I Been Pwned MCP server?
Have I Been Pwned is an MCP server listed in the public MCP registry as io.github.troyhunt/hibp. Breach intelligence API: email search, domain monitoring, passwords and stealer logs. This page covers its hosted endpoint (https://haveibeenpwned.com/mcp).
Is the Have I Been Pwned MCP server safe to use?
Have I Been Pwned scores 84 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Have I Been Pwned MCP server expose?
Have I Been Pwned exposes 17 tools: hibp_list_breaches, hibp_get_breach, hibp_get_latest_breach, hibp_list_data_classes, hibp_get_pwned_passwords_range, and 12 more. Their descriptions and schemas cost roughly 2,102 tokens of context every time the server is loaded.
Does the Have I Been Pwned MCP server require authentication?
No. We connected to Have I Been Pwned without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Have I Been Pwned MCP server still maintained?
Have I Been Pwned is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.