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.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
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aid: expanse
deliveryModel:
model: unknown
open_source: false
commercial: false
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- none
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source:
- url: https://expanse.co
status: 301
note: declared website redirects to https://www.paloaltonetworks.com/cortex/cortex-xpanse — a different registrable domain
(expanse.co -> paloaltonetworks.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
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: '0.23'
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: ParentCompany
url: https://apis.io/providers/palo-alto-networks/
name: Palo Alto Networks
x-relationship: acquired
x-evidence: The company was backed by IVP, Susa Ventures, and Y Combinator, and was acquired by Palo Alto Networks in 2020.
- 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
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