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 API contracts indexed on the APIs.io network, including Bulk API, Bypass Codes API, Groups API, and 4 more. Tagged areas include Authentication, MFA, Zero Trust, Identity, and Identity Federation.

The Duo Security catalog on APIs.io includes 1 Spectral governance ruleset.

Duo Security’s developer surface includes authentication, documentation, engineering blog, API reference, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.8/100 thin ▬ flat Agent 21/100 agent aware Front door AI 4/6 moderate Heartbeat 92/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Authentication MFA Zero Trust Identity Identity Federation Security Multi-Factor Authentication Identity and Access Management Cloud Services Enterprise

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

Bypass CodesGroupsPhonesTokensUsersWebauthn

POST /admin/v1/users POST /admin/v1/users/enroll POST /admin/v1/users/{user_id}/bypass_codes POST /admin/v1/users/{user_id}/tokens

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 31.8/100 · thin

Contract Quality 9.0 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 2.4 / 15

Operational Transparency 2.1 / 10

Contract Governance 1.2 / 9

Discoverability 4.3 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/duo-security/"><img src="https://apis.io/badge/duo-security/card.svg" alt="Duo Security on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 15.8 — up to +16.8 composite points
Developer Ergonomics scores 31.0 — up to +13.8 composite points
Contract Quality scores 47.8 — up to +13.1 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/duo-security/apis.yml: open an issue on github.com/api-evangelist/duo-security to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Identity and Auth	regulated	65.0	-	-
Cisco DevNet Ecosystem (builders on Meraki, Catalyst, ISE, ThousandEyes, Splunk)	regulated	65.0	-	-
Japan ISMAP Cloud Security Assessments (TISAX unreadable)	regulated	65.0	-	-
NIST CMVP FIPS 140 Validated Cryptographic Modules (FIPS 140-1 / 140-2 / 140-3)	regulated	65.0	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 8

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

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 8

Duo Security API pricing

Not yet checked against Duo Security's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Duo Security's documentation. All 5 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Duo Security

SLA

FinOps 1

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

Duo Security Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Duo Security API Rules

56 rules · 53 errors 2 warnings 1 info

SPECTRAL

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

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

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

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/duo-security.png
tags:
- Authentication
- MFA
- Zero Trust
- Identity
- Identity Federation
- Security
- Multi-Factor Authentication
- Identity and Access Management
- Cloud Services
- Enterprise
tags_raw:
- Authentication
- MFA
- Zero Trust
- Identity
- Identity Federation
- Security
- Multi-Factor Authentication
- Identity Management
- Cloud Services
- Enterprise
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:
  - Phone
  tags_raw:
  - 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: Plans
  url: plans/duo-security-plans-pricing.yml
- type: RateLimits
  url: rate-limits/duo-security-rate-limits.yml
- type: FinOps
  url: finops/duo-security-finops.yml
- type: CapabilityMap
  url: capabilities/duo-security-capability-edges.yml
  name: Duo Security Business Capability Map
- 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
- type: DeveloperPortal
  url: https://ecosystem.duo.com/onboarding/developer
- type: APIReference
  url: https://duo.com/docs/authapi
- type: Blog
  url: https://duo.com/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

Duo Security API — frequently asked questions

Does Duo Security have an API?

Yes. APIs.io lists 7 APIs from Duo Security, including Duo Security Bulk API, Duo Security Bypass Codes API and Duo Security Groups API, and 4 more.

Is there an OpenAPI specification for the Duo Security API?

Yes. APIs.io indexes 7 OpenAPI specifications for Duo Security, each linked for download from this page.

How do I authenticate with the Duo Security API?

Duo Security uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Duo Security Authentication.

How much does the Duo Security API cost?

APIs.io lists 3 pricing plans for Duo Security, with each plan's price, limits and inclusions under Pricing on this page.

Is the Duo Security API ready for AI agents?

Duo Security has a Kin Score of 31.8 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/duo-security"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/duo-security/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/duo-security/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.