Nucleus Security

Nucleus Security is a risk-based vulnerability and exposure management platform that unifies findings from across an organization's scanning estate - network, application, cloud, container and penetration-test tooling - into a single normalized view, then prioritizes and automates remediation against it. The platform ingests from roughly thirty first-party connectors (Tenable, Qualys, Rapid7, Snyk, Checkmarx, Crowdstrike, Orca, Prisma and others), enriches findings with threat intelligence including CISA KEV, EPSS, CVSS v3/v4 and Nucleus Insights exploitation signals, and drives remediation through ServiceNow, Jira and other ticketing systems. Programmatic access is a first-class deployment model: every platform capability is exposed through an API-key-authenticated REST API documented in-console with Swagger, and Nucleus ships a hosted Model Context Protocol server so AI clients can query Nucleus data under the same RBAC and Asset Group Access Control enforced in the UI. Nucleus also publishes an open, unauthenticated vulnerability intelligence API on its corporate domain, and a FedRAMP Moderate government offering, NucleusGov.

Nucleus Security publishes 1 API on the APIs.io network: Vulnerabilities API. Tagged areas include Company, Security, Cybersecurity, Vulnerability Management, and Exposure Management.

Nucleus Security’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, authentication, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.2/100 thin ▬ flat Agent 40/100 agent ready saas Full breakdown ↓
scored 2026-09-01 · rubric v0.17.2

2 APIs 1 MCP Servers

Company Security Cybersecurity Vulnerability Management Exposure Management Risk Management Threat Intelligence Compliance DevSecOps MCP

Kin Score

Kin Score How this is scored →
scored 2026-09-01 · rubric v0.17.2

Composite quality — 36.2/100 · thin

Contract Quality 3.3 / 25

Developer Ergonomics 9.9 / 20

Access Clarity 9.5 / 20

Operational Transparency 3.8 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 40/100 · 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 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/nucleus-security: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

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

MCP Servers 1

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

Rate Limits 1

Documented rate limits and quota policies.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Nucleus Security Scopes

1 scope

1 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

WellKnown

MCPServer

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

ToolCrosswalk

ToolCrosswalk

Access & Security 8

Authentication, authorization, and security posture

Security

Security

Compliance

Compliance

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

SecurityTxt

DomainSecurity

OAuthScopes

Authentication

Scroll for all 8

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: nucleus-security
name: Nucleus Security
description: 'Nucleus Security is a risk-based vulnerability and exposure management platform that unifies findings from across
  an organization''s scanning estate - network, application, cloud, container and penetration-test tooling - into a single
  normalized view, then prioritizes and automates remediation against it. The platform ingests from roughly thirty first-party
  connectors (Tenable, Qualys, Rapid7, Snyk, Checkmarx, Crowdstrike, Orca, Prisma and others), enriches findings with threat
  intelligence including CISA KEV, EPSS, CVSS v3/v4 and Nucleus Insights exploitation signals, and drives remediation through
  ServiceNow, Jira and other ticketing systems. Programmatic access is a first-class deployment model: every platform capability
  is exposed through an API-key-authenticated REST API documented in-console with Swagger, and Nucleus ships a hosted Model
  Context Protocol server so AI clients can query Nucleus data under the same RBAC and Asset Group Access Control enforced
  in the UI. Nucleus also publishes an open, unauthenticated vulnerability intelligence API on its corporate domain, and a
  FedRAMP Moderate government offering, NucleusGov.'
url: https://raw.githubusercontent.com/api-evangelist/nucleus-security/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
image: https://nucleussec.com/wp-content/uploads/2024/12/cropped-Nucleus-Full-Color-Logo-270x270.png
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-08-26'
tags:
- Company
- Security
- Cybersecurity
- Vulnerability Management
- Exposure Management
- Risk Management
- Threat Intelligence
- Compliance
- DevSecOps
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Nucleus Security Platform REST API
  description: The Nucleus platform API. Every platform capability is exposed over REST, documented with Swagger inside the
    authenticated customer console, and authenticated with a static API key in an x-apikey header. The base URL is templated
    per tenant - the instance name is the customer's own subdomain. Publicly documented operations cover project-scoped metrics,
    findings search, finding processing rules, bulk data export and async job polling.
  humanURL: https://help.nucleussec.com/docs/api-access
  baseURL: https://[instance-name].nucleussec.com/nucleus/api
  tags:
  - Vulnerability Management
  - Findings
  - Assets
  - Metrics
  properties:
  - type: Documentation
    url: https://help.nucleussec.com/docs/api-access
  - type: Authentication
    url: authentication/nucleus-security-authentication.yml
  - type: Conventions
    url: conventions/nucleus-security-conventions.yml
  - type: Lifecycle
    url: lifecycle/nucleus-security-lifecycle.yml
- name: Nucleus MCP Server
  description: Hosted remote Model Context Protocol server included with the Nucleus platform, reachable at a per-tenant URL.
    Exposes project, asset, finding/vulnerability and Nucleus Query Language tools to AI clients over OAuth, enforcing the
    same RBAC and Asset Group Access Control as the console, evaluated at query time. Tested by the provider with ChatGPT,
    Claude and Augment Code.
  humanURL: https://nucleussec.com/platform/mcp-server/
  baseURL: https://[your-nucleus-instance].nucleussec.com/nucleus/mcp
  tags:
  - MCP
  - Artificial Intelligence
  - Agents
  tags_raw:
  - MCP
  - AI
  - Agents
  properties:
  - type: MCPServer
    url: mcp/nucleus-security-mcp.yml
  - type: ToolCrosswalk
    url: mcp/nucleus-security-tool-crosswalk.yml
  - type: Documentation
    url: https://help.nucleussec.com/docs/nucleus-mcp-server
- aid: nucleus-security:nucleus-security-vulnerabilities-api
  name: Nucleus Security Vulnerabilities API
  description: Enriched CVE records from the Nucleus Security public vulnerability intelligence dataset.
  humanURL: https://nucleussec.com/
  baseURL: https://nucleussec.com/wp-json/nucleussec/v1
  tags:
  - Vulnerabilities
  properties:
  - type: OpenAPI
    url: openapi/nucleus-security-vulnerabilities-api-openapi.yml
  - type: DataModel
    url: data-model/nucleus-security-data-model.yml
  - type: ErrorCatalog
    url: errors/nucleus-security-problem-types.yml
common:
- type: Website
  url: https://nucleussec.com/
- type: Documentation
  url: https://help.nucleussec.com/
- type: APIReference
  url: https://help.nucleussec.com/docs/api-access
- type: GettingStarted
  url: https://help.nucleussec.com/docs/quickstart
- type: Support
  url: https://nucleussec.atlassian.net/servicedesk/customer/portal/3
- type: Blog
  url: https://nucleussec.com/blog/
- type: GitHubOrganization
  url: https://github.com/nucleus-security
- type: Pricing
  url: https://nucleussec.com/get-pricing/
- type: TermsOfService
  url: https://nucleussec.com/legal/msa/
- type: PrivacyPolicy
  url: https://nucleussec.com/privacy-policy/
- type: StatusPage
  url: https://status.nucleussec.com/
- type: Security
  url: security/nucleus-security-vulnerability-disclosure.yml
- type: Compliance
  url: security/nucleus-security-trust-center.yml
- type: TrustCenter
  url: security/nucleus-security-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/nucleus-security-vulnerability-disclosure.yml
- type: SecurityTxt
  url: well-known/nucleus-security-security.txt
- type: DomainSecurity
  url: security/nucleus-security-domain-security.yml
- type: WellKnown
  url: well-known/nucleus-security-well-known.yml
- type: OAuthScopes
  url: scopes/nucleus-security-scopes.yml
- type: Authentication
  url: authentication/nucleus-security-authentication.yml
- type: Conventions
  url: conventions/nucleus-security-conventions.yml
- type: Conformance
  url: conformance/nucleus-security-conformance.yml
- type: ErrorCatalog
  url: errors/nucleus-security-problem-types.yml
- type: Lifecycle
  url: lifecycle/nucleus-security-lifecycle.yml
- type: Plans
  url: plans/nucleus-security-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nucleus-security-rate-limits.yml
- type: Packages
  url: packages/nucleus-security-packages.yml
- type: DataModel
  url: data-model/nucleus-security-data-model.yml
- type: MCPServer
  url: mcp/nucleus-security-mcp.yml
- type: ToolCrosswalk
  url: mcp/nucleus-security-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/nucleus-security-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/nucleus-security-vulnerability-intelligence-overlay.yaml
x-enrichment:
  date: '2026-08-26'
  status: enriched
  artifacts_added: 27
  pass: local-v1

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Nucleus Security

Kin Score

APIs 3

Nucleus Security Platform REST API

Nucleus MCP Server

Nucleus Security Vulnerabilities API