Authress

Authress provides a login and access control API offering authentication, authorization, and fine‑grained permission management for applications. It supports SAML, OAuth, OIDC, social logins, passwordless WebAuthn, and machine tokens, with features like tenant separation, audit trails, and GDPR‑compliant data handling. The service includes a developer portal, SDKs in multiple languages, Terraform provider, and extensive documentation for quick integration.

Authress is listed with 1 API on the APIs.io network. Tagged areas include Company, Authentication, Authorization, Access Control, and Identity.

Authress’ developer surface includes authentication, changelog, documentation, API reference, getting-started guide, pricing, support, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.2/100 emerging ▼ -6.7 Agent 5/100 human only Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

Company Authentication Authorization Access Control Identity

Kin Score

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

Composite quality — 25.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 6.3 / 17

Access Clarity 0.9 / 17

Operational Transparency 5.2 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 5/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 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 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 5.3 — up to +18.9 composite points
Developer Ergonomics scores 36.9 — up to +12.6 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/authress/apis.yml: open an issue on github.com/api-evangelist/authress 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 →

APIs 1

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

Authress Authorization API

Authress REST API for managing users, permissions, roles, and access control.

Authress API pricing

Rate limits

Special Tier: Tier 1 call per hour per resource
Portal Tier: Portal Tier 1 call per minute
Tier 1: Tier 1 1 call per second

All 6 limits →

Rate Limits 1

Documented rate limits and quota policies.

Authress Rate Limits

6 limits

RATE LIMITS

Security Posture 3

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

Authress Authentication

2 schemes

SECURITY

Authress Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Authress Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Security

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: authress
name: Authress
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://authress.io/static/images/media-banner.png
description: Authress provides a login and access control API offering authentication, authorization, and fine‑grained permission
  management for applications. It supports SAML, OAuth, OIDC, social logins, passwordless WebAuthn, and machine tokens, with
  features like tenant separation, audit trails, and GDPR‑compliant data handling. The service includes a developer portal,
  SDKs in multiple languages, Terraform provider, and extensive documentation for quick integration.
url: https://raw.githubusercontent.com/api-evangelist/authress/refs/heads/main/apis.yml
x-type: company
x-source: harvest:tag-qc
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-13 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-13'
tags:
- Company
- Authentication
- Authorization
- Access Control
- Identity
tags_raw:
- Company
- Authentication
- Authorization
- AccessControl
- Identity
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/authress-rate-limits.yml
- type: Security
  url: https://authress.io/app/#/disclosure
- type: Authentication
  url: authentication/authress-authentication.yml
- type: Conformance
  url: conformance/authress-conformance.yml
- type: LLMsTxt
  url: llms/authress-llms.txt
- type: SecurityTxt
  url: well-known/authress-security.txt
- type: SecurityTxt
  url: well-known/authress-api-security.txt
- type: WellKnown
  url: well-known/authress-well-known.yml
- type: Hosts
  url: hosts/authress-hosts.yml
- type: Vendors
  url: vendors/authress-vendors.yml
- type: SDKs
  url: packages/authress-packages.yml
- type: Packages
  url: packages/authress-packages.yml
- type: GitHubOrganization
  url: https://github.com/Authress
- type: ChangeLog
  url: https://authress.io/knowledge-base/release-notes
- type: VulnerabilityDisclosure
  url: security/authress-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/authress-domain-security.yml
- type: Website
  url: https://authress.io
- type: Documentation
  url: https://authress.io/knowledge-base/docs/introduction
- type: APIReference
  url: https://authress.io/knowledge-base/docs/introduction
- type: GettingStarted
  url: https://authress.io/knowledge-base/getting-started-with-authress
- type: Pricing
  url: https://authress.io/pricing
- type: Support
  url: https://authress.instatus.com
- type: Blog
  url: https://authress.io/blog
apis:
- name: Authress Authorization API
  description: Authress REST API for managing users, permissions, roles, and access control.
  humanURL: https://authress.io/knowledge-base/docs/introduction
  baseURL: https://api.authress.io
  aid: authress:authress-authorization-api
x-enrichment:
  date: '2026-10-13'
  status: enriched
  artifacts_added: 14
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Authress API — frequently asked questions

Does Authress have an API?

Yes. APIs.io lists 1 API from Authress, including Authress Authorization API.

How do I authenticate with the Authress API?

Authress uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Authress Authentication.

Is the Authress API ready for AI agents?

Authress has a Kin Score of 25.2 out of 100 (emerging) and an Agent Readiness score of 5.0 (human-only), scored by API Evangelist on 2026-11-06.

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apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
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