Efflux Systems

Efflux (Efflux Systems, Inc.) is a Baltimore, Maryland cybersecurity company founded in 2014 that operates a near real-time asset intelligence and attack-surface platform. Efflux delivers fresh intelligence about the assets of organizations, networks, and services — offered as a one-time Asset Map, scheduled monitoring, or on-demand custom scanning. Its differentiator is radical transparency: rather than opaque risk scores and surface-level abstractions, Efflux records and exposes every scan it runs, every asset it discovers, and every attribution it makes, so teams can see what was found, how it was discovered, and why it matters — raw information and formatted insights side by side. Data is accessible via export, download, share, and a programmatic API. The company is backed by 500 Global, Granite Hill Capital Partners, TEDCO, and Three Tree Ventures, and is currently in early access with a public waitlist.

Efflux Systems publishes 1 API on the APIs.io network. Tagged areas include Company, Security, Cybersecurity, Attack Surface Management, and Asset Intelligence.

Efflux Systems’ developer surface includes signup flow, support, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessApproval

1 APIs

CompanySecurityCybersecurityAttack Surface ManagementAsset IntelligenceAsset DiscoveryThreat IntelligenceVulnerability Management

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 14.9/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 4.7 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 9.3 / 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/efflux-systems: 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 1

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

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: efflux-systems
name: Efflux Systems
description: 'Efflux (Efflux Systems, Inc.) is a Baltimore, Maryland cybersecurity company founded in 2014 that operates a
  near real-time asset intelligence and attack-surface platform. Efflux delivers fresh intelligence about the assets of organizations,
  networks, and services — offered as a one-time Asset Map, scheduled monitoring, or on-demand custom scanning. Its differentiator
  is radical transparency: rather than opaque risk scores and surface-level abstractions, Efflux records and exposes every
  scan it runs, every asset it discovers, and every attribution it makes, so teams can see what was found, how it was discovered,
  and why it matters — raw information and formatted insights side by side. Data is accessible via export, download, share,
  and a programmatic API. The company is backed by 500 Global, Granite Hill Capital Partners, TEDCO, and Three Tree Ventures,
  and is currently in early access with a public waitlist.'
url: https://raw.githubusercontent.com/api-evangelist/efflux-systems/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://effluxsystems.com/favicon.ico
tags:
- Company
- Security
- Cybersecurity
- Attack Surface Management
- Asset Intelligence
- Asset Discovery
- Threat Intelligence
- Vulnerability Management
apis:
- name: Efflux API
  description: Programmatic access to Efflux asset-intelligence data — export, download, and share the assets, scans, and
    attributions Efflux collects. The API host is live but access-gated (early access / waitlist); no public OpenAPI or API
    reference is published yet.
  humanURL: https://efflux.io
  baseURL: https://api.efflux.io
  properties: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/efflux-systems-domain-security.yml
- type: Website
  url: https://effluxsystems.com
- type: SignUp
  url: https://efflux.io/waitlist
- type: PrivacyPolicy
  url: https://efflux.io/privacy
- type: Support
  url: https://efflux.io/contact
- type: LLMsTxt
  url: llms/efflux-systems-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence