Duo Security

Duo Security is a multi-factor authentication and zero trust security platform from Cisco for securing access to applications and APIs.

Duo Security publishes 7 APIs on the APIs.io network, including Bulk API, Bypass Codes API, Groups API, and 4 more. Tagged areas include Authentication, MFA, Zero Trust, and Identity.

Duo Security’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

18.7/100 emerging ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Authentication MFA Zero Trust Identity

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 18.7/100 · emerging

Contract Quality 3.2 / 23

Developer Ergonomics 4.3 / 18

Access Clarity 4.3 / 18

Operational Transparency 1.2 / 12

Contract Governance 0.0 / 11

Discoverability 4.5 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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/duo-security: 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 7

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

Duo Security Bulk API

Batched operations

Duo Security Bypass Codes API

Bypass code generation and listing

Duo Security Groups API

Group management and membership

Duo Security Phones API

Phone device management

Duo Security Tokens API

Hardware token management

Duo Security Users API

User account management

Duo Security WebAuthn API

WebAuthn credential management

Scroll for all 7

Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Duo Admin API

OPEN COLLECTION

Duo Admin Bulk API

OPEN COLLECTION

Duo Admin Bulk Bypass Codes API

OPEN COLLECTION

Duo Admin Bulk Groups API

OPEN COLLECTION

Duo Admin Bulk Phones API

OPEN COLLECTION

Duo Admin Bulk Tokens API

OPEN COLLECTION

Duo Admin Bulk Users API

OPEN COLLECTION

Duo Admin Bulk WebAuthn API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Duo Security Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Duo Security Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Duo Security Finops

FINOPS

Security Posture 4

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

Duo Security Authentication

http · 1 scheme

SECURITY

Duo Security Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Duo Security Vulnerability Disclosure

security.txt · contact published

SECURITY

Duo Security Trust Center

SOC 2, ISO 27001, PCI DSS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Duo Security Agentic Access

32 operations · 19 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: duo-security
name: Duo Security
description: Duo Security is a multi-factor authentication and zero trust security platform from Cisco for securing access
  to applications and APIs.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/duo-security.png
tags:
- Authentication
- MFA
- Zero Trust
- Identity
url: https://raw.githubusercontent.com/api-evangelist/duo-security/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-08-19'
specificationVersion: '0.23'
apis:
- aid: duo-security:duo-security-bulk-api
  name: Duo Security Bulk API
  description: Batched operations
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - Bulk
  properties:
  - type: OpenAPI
    url: openapi/duo-security-bulk-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-bypass-codes-api
  name: Duo Security Bypass Codes API
  description: Bypass code generation and listing
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - Bypass Codes
  properties:
  - type: OpenAPI
    url: openapi/duo-security-bypass-codes-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-groups-api
  name: Duo Security Groups API
  description: Group management and membership
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - Group
  tags_raw:
  - Groups
  properties:
  - type: OpenAPI
    url: openapi/duo-security-groups-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-phones-api
  name: Duo Security Phones API
  description: Phone device management
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - Phones
  properties:
  - type: OpenAPI
    url: openapi/duo-security-phones-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-tokens-api
  name: Duo Security Tokens API
  description: Hardware token management
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/duo-security-tokens-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-users-api
  name: Duo Security Users API
  description: User account management
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/duo-security-users-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
- aid: duo-security:duo-security-webauthn-api
  name: Duo Security WebAuthn API
  description: WebAuthn credential management
  humanURL: https://duo.com/docs/adminapi
  baseURL: https://api-XXXXXXXX.duosecurity.com
  tags:
  - WebAuthn
  properties:
  - type: OpenAPI
    url: openapi/duo-security-webauthn-api-openapi.yml
  - type: Documentation
    url: https://duo.com/docs/adminapi
common:
- type: ParentCompany
  url: https://apis.io/providers/cisco/
  name: Cisco
  x-relationship: acquisition
  x-generated-by: cisco-family:2026-08-19
  x-acquired: 2018
- type: AgenticAccess
  url: agentic-access/duo-security-agentic-access.yml
- type: TrustCenter
  url: security/duo-security-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/duo-security-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/duo-security-domain-security.yml
- type: Authentication
  url: authentication/duo-security-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/duosec
- type: Website
  url: https://duo.com
- type: Documentation
  url: https://duo.com/docs
- type: GitHubOrganization
  url: https://github.com/duosecurity
- type: Integrations
  url: https://duo.com/integrations
- url: https://duo.com/feed
  type: Blog
integrations:
- name: See how Duo strengthens AWS security
- name: See how Duo secures digital workspaces
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: cisco
x-relationship: acquisition
x-acquired: 2018

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