Expanse

Expanse (originally founded as Qadium) was a cybersecurity company specializing in internet attack surface management, continuously discovering and monitoring an organization's internet-connected assets to find exposures and unmanaged risk. The company was backed by IVP, Susa Ventures, and Y Combinator, and was acquired by Palo Alto Networks in 2020. Its technology now ships as Cortex Xpanse, part of the Palo Alto Networks Cortex platform, and the expanse.co domain 301-redirects to the Cortex Xpanse product page. This profile is retained as an acquired-company lead in the API Evangelist network; the company no longer operates an independent developer program or public API surface.

Expanse is profiled on the APIs.io network. Tagged areas include Company, Cybersecurity, Attack Surface Management, Security, and Cloud Security.

🌐 Visit website 📡 Source on GitHub
6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyCybersecurityAttack Surface ManagementSecurityCloud SecurityAcquired

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/expanse: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Expanse Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Product
Product

Source (apis.yml)

apis.yml Raw ↑ 
aid: expanse
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/expanse.png
name: Expanse
description: Expanse (originally founded as Qadium) was a cybersecurity company specializing in internet attack surface management,
  continuously discovering and monitoring an organization's internet-connected assets to find exposures and unmanaged risk.
  The company was backed by IVP, Susa Ventures, and Y Combinator, and was acquired by Palo Alto Networks in 2020. Its technology
  now ships as Cortex Xpanse, part of the Palo Alto Networks Cortex platform, and the expanse.co domain 301-redirects to the
  Cortex Xpanse product page. This profile is retained as an acquired-company lead in the API Evangelist network; the company
  no longer operates an independent developer program or public API surface.
url: https://raw.githubusercontent.com/api-evangelist/expanse/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- ivp
- susa-ventures
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: palo-alto-networks
x-successor: Cortex Xpanse
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Cybersecurity
- Attack Surface Management
- Security
- Cloud Security
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/expanse-domain-security.yml
- type: Website
  url: https://expanse.co
- type: Product
  name: Cortex Xpanse (Palo Alto Networks)
  url: https://www.paloaltonetworks.com/cortex/cortex-xpanse
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence