HackNotice

HackNotice is an external threat-intelligence and cyber-risk platform founded in 2018 and headquartered in Austin, Texas. It continuously collects intelligence from ransomware groups, infostealer malware logs, data breaches, dark-web marketplaces, hacker forums and public disclosures, then matches that intelligence against the domains, employees, customers and vendors an organization asks it to watch. The product is organized around four monitoring services — first-party domain monitoring, third-party vendor risk monitoring, end-user credential monitoring, and threat research and investigations — plus AI-assisted vendor security assessments. HackNotice exposes this surface programmatically through a REST API documented as a public Postman collection at api-docs.hacknotice.com, a remote Model Context Protocol server at mcp.hacknotice.com whose tool catalogue answers anonymously, first-party n8n automation nodes on npm, and webhook, Splunk HEC and SIEM/SOAR alert delivery.

HackNotice publishes 8 APIs on the APIs.io network, including Alerts API, All Business Accounts API, Calc endpoints API, and 5 more. Tagged areas include Company, Security, Threat Intelligence, Cybersecurity, and Dark Web Monitoring.

The HackNotice catalog on APIs.io includes 1 event-driven AsyncAPI specification.

HackNotice’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.3/100 developing ▬ flat Agent 35/100 agent ready Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessPaid

1 APIs 1 MCP Servers

Company Security Threat Intelligence Cybersecurity Dark Web MonitoringData BreachesCredential MonitoringThird-Party Risk Vendor Risk Management Vulnerability Management RansomwareSecurity AssessmentsAlerts Monitoring

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 51.3/100 · developing

Contract Quality 14.8 / 23

Developer Ergonomics 8.9 / 18

Access Clarity 12.8 / 18

Operational Transparency 3.7 / 12

Contract Governance 0.5 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/hacknotice: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

HackNotice MCP Server

Remote Model Context Protocol server operated by HackNotice, speaking JSON-RPC 2.0 over Streamable HTTP at https://mcp.hacknotice.com:13330/mcp. It publishes 80 tools across thi...

HackNotice Alerts API

Cross-service alert retrieval.

HackNotice All Business Accounts API

Authentication, leak/leakfile search, customer records, metrics, habits, downloads, utilities and item notes shared by every business account.

HackNotice Calc endpoints API

Aggregate/rollup calculation endpoints for breaches, threat actors and per-service alerts.

HackNotice Deprecated API

Endpoints HackNotice groups as deprecated in its published collection (dark hash alerts, Teams accounts).

HackNotice Domain Business Accounts API

First-party domain monitoring: domain watchlists, domain leaks, domain alerts and downloads.

HackNotice Enduser Business Accounts API

End-user monitoring: end-user watchlists, end-user leaks and end-user alerts.

HackNotice Research Service Accounts API

Threat-research search over terms, filenames and word pools, plus saved searches.

HackNotice Third Party Accounts API

Third-party vendor monitoring: hacks, hack updates, watchlists, alerts and vendor security assessments.

Scroll for all 9

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

HackNotice MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Hacknotice Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Hacknotice Rate Limits

1 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Hacknotice Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Hacknotice Authentication

apiKey · 3 schemes

SECURITY

Hacknotice Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Postman

ToolCrosswalk

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

RateLimits

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

License

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: hacknotice
name: HackNotice
description: HackNotice is an external threat-intelligence and cyber-risk platform founded in 2018 and headquartered in Austin,
  Texas. It continuously collects intelligence from ransomware groups, infostealer malware logs, data breaches, dark-web marketplaces,
  hacker forums and public disclosures, then matches that intelligence against the domains, employees, customers and vendors
  an organization asks it to watch. The product is organized around four monitoring services — first-party domain monitoring,
  third-party vendor risk monitoring, end-user credential monitoring, and threat research and investigations — plus AI-assisted
  vendor security assessments. HackNotice exposes this surface programmatically through a REST API documented as a public
  Postman collection at api-docs.hacknotice.com, a remote Model Context Protocol server at mcp.hacknotice.com whose tool catalogue
  answers anonymously, first-party n8n automation nodes on npm, and webhook, Splunk HEC and SIEM/SOAR alert delivery.
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://hacknotice.com/wp-content/uploads/2022/12/favicon.png
url: https://raw.githubusercontent.com/api-evangelist/hacknotice/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-22'
modified: '2026-08-22'
tags:
- Company
- Security
- Threat Intelligence
- Cybersecurity
- Dark Web Monitoring
- Data Breaches
- Credential Monitoring
- Third-Party Risk
- Vendor Risk Management
- Vulnerability Management
- Ransomware
- Security Assessments
- Alerts
- Monitoring
tags_raw:
- Company
- Security
- Threat Intelligence
- Cybersecurity
- Dark Web Monitoring
- Data Breaches
- Credential Monitoring
- Third Party Risk
- Vendor Risk Management
- Vulnerability Management
- Ransomware
- Security Assessments
- Alerts
- Monitoring
apis:
- aid: hacknotice:hacknotice-mcp
  name: HackNotice MCP Server
  description: Remote Model Context Protocol server operated by HackNotice, speaking JSON-RPC 2.0 over Streamable HTTP at
    https://mcp.hacknotice.com:13330/mcp. It publishes 80 tools across third-party, first-party, end-user, research and assessment
    groups, plus cross-cutting global-breach, exposure, chatter, credential-leak, leaked-file and correlated-leak search.
    tools/list and initialize answer anonymously, so every tool inputSchema is public; tools/call is gated on a per-user X-HackNotice-Integration-Key.
  humanURL: https://github.com/HackNotice/n8n-nodes-hacknotice-mcp
  baseURL: https://mcp.hacknotice.com:13330/mcp
  tags:
  - MCP
  - Agents
  - Threat Intelligence
  - Security
  properties:
  - type: MCPServer
    url: mcp/hacknotice-mcp.yml
  - type: ToolCrosswalk
    url: mcp/hacknotice-tool-crosswalk.yml
  - type: SourceCode
    url: https://github.com/HackNotice/n8n-nodes-hacknotice-mcp
- aid: hacknotice:hacknotice-alerts-api
  name: HackNotice Alerts API
  description: Cross-service alert retrieval.
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Alerts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-alerts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-all-business-accounts-api
  name: HackNotice All Business Accounts API
  description: Authentication, leak/leakfile search, customer records, metrics, habits, downloads, utilities and item notes
    shared by every business account.
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - All Business Accounts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-all-business-accounts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-calc-endpoints-api
  name: HackNotice Calc endpoints API
  description: Aggregate/rollup calculation endpoints for breaches, threat actors and per-service alerts.
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Calc endpoints
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-calc-endpoints-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-deprecated-api
  name: HackNotice Deprecated API
  description: Endpoints HackNotice groups as deprecated in its published collection (dark hash alerts, Teams accounts).
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Deprecated
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-deprecated-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-domain-business-accounts-api
  name: HackNotice Domain Business Accounts API
  description: 'First-party domain monitoring: domain watchlists, domain leaks, domain alerts and downloads.'
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Domain Business Accounts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-domain-business-accounts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-enduser-business-accounts-api
  name: HackNotice Enduser Business Accounts API
  description: 'End-user monitoring: end-user watchlists, end-user leaks and end-user alerts.'
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Enduser Business Accounts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-enduser-business-accounts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-research-service-accounts-api
  name: HackNotice Research Service Accounts API
  description: Threat-research search over terms, filenames and word pools, plus saved searches.
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Research Service Accounts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-research-service-accounts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
- aid: hacknotice:hacknotice-third-party-accounts-api
  name: HackNotice Third Party Accounts API
  description: 'Third-party vendor monitoring: hacks, hack updates, watchlists, alerts and vendor security assessments.'
  humanURL: https://api-docs.hacknotice.com
  baseURL: https://extensionapi.hacknotice.com
  tags:
  - Third Party Accounts
  properties:
  - type: OpenAPI
    url: openapi/hacknotice-third-party-accounts-api-openapi.yml
  - type: Documentation
    url: https://api-docs.hacknotice.com
  - type: APIReference
    url: https://api-docs.hacknotice.com
  - type: Postman
    url: https://api-docs.hacknotice.com
  - type: Authentication
    url: authentication/hacknotice-authentication.yml
  - type: RateLimits
    url: rate-limits/hacknotice-rate-limits.yml
  - type: ErrorCatalog
    url: errors/hacknotice-problem-types.yml
  - type: DataModel
    url: data-model/hacknotice-data-model.yml
  - type: Conventions
    url: conventions/hacknotice-conventions.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: License
  name: MIT
  url: https://github.com/HackNotice/n8n-nodes-hacknotice-mcp/blob/main/LICENSE
- type: DomainSecurity
  url: security/hacknotice-domain-security.yml
- type: Website
  url: https://hacknotice.com/
- type: DeveloperPortal
  url: https://api-docs.hacknotice.com
- type: Documentation
  url: https://hacknotice.zendesk.com/hc/en-us
- type: APIReference
  url: https://api-docs.hacknotice.com
- type: GettingStarted
  url: https://hacknotice.zendesk.com/hc/en-us/articles/13771563959828-Overview-Getting-Started-for-Sec-Teams
- type: Support
  url: https://hacknotice.zendesk.com/hc/en-us
- type: HelpCenter
  url: https://hacknotice.zendesk.com/hc/en-us
- type: Blog
  url: https://hacknotice.com/category/blog/
- type: BlogRSS
  url: https://hacknotice.com/feed/
- type: GitHubOrganization
  url: https://github.com/HackNotice
- type: Pricing
  url: https://hacknotice.com/pricing/
- type: SignUp
  url: https://hacknotice.com/free-account/
- type: Login
  url: https://app.hacknotice.com/
- type: TermsOfService
  url: https://hacknotice.com/businesstandc/
- type: PrivacyPolicy
  url: https://hacknotice.com/privacy/
- type: Postman
  url: https://api-docs.hacknotice.com
- type: OpenAPI
  url: openapi/hacknotice-openapi.yml
- type: MCPServer
  url: mcp/hacknotice-mcp.yml
- type: ToolCrosswalk
  url: mcp/hacknotice-tool-crosswalk.yml
- type: Packages
  url: packages/hacknotice-packages.yml
- type: SDKs
  url: packages/hacknotice-packages.yml
- type: Authentication
  url: authentication/hacknotice-authentication.yml
- type: RateLimits
  url: rate-limits/hacknotice-rate-limits.yml
- type: Plans
  url: plans/hacknotice-plans-pricing.yml
- type: Conventions
  url: conventions/hacknotice-conventions.yml
- type: ErrorCatalog
  url: errors/hacknotice-problem-types.yml
- type: Lifecycle
  url: lifecycle/hacknotice-lifecycle.yml
- type: Conformance
  url: conformance/hacknotice-conformance.yml
- type: DataModel
  url: data-model/hacknotice-data-model.yml
- type: Overlay
  url: overlays/hacknotice-openapi-overlay.yaml
- type: Webhooks
  url: asyncapi/hacknotice-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/hacknotice-llms.txt
x-enrichment:
  date: '2026-08-22'
  status: enriched
  artifacts_added: 25
  pass: local-v1

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