Authsignal
Authsignal is a passwordless, step-up, and risk-based authentication platform. The product wraps passkeys, authenticator apps (TOTP), SMS and WhatsApp OTP, email OTP and magic links, push notifications, biometrics (face / palm), and ID verification behind a unified Server API, Client API, and Management API. A no-code rules engine routes high-risk events through step-up challenges, and audit / observability surfaces every authentication attempt. Authsignal slots in front of existing identity providers (Cognito, Auth0, Azure AD B2C, Keycloak, IdentityServer, NextAuth.js) or works standalone.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Authsignal the way a machine reads it — 36 machine-readable artifacts across 22 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Authsignal scores 39.9/100 (thin), with a separate agent-readiness read of 31/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Put this on your own site. The badge is drawn live from Authsignal's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/authsignal/"
title="Authsignal on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/authsignal.svg"
alt="Authsignal Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/authsignal/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/authsignal/"
title="Authsignal on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/authsignal/card.svg"
alt="Authsignal Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Authsignal
Each block below is one kind of artifact we hold for Authsignal. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 22
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Authsignal Server API
Server-to-server REST API used to track user actions, evaluate the rules engine, mint short-lived URLs for the pre-built authentication UI, issue client tokens, validate challen...
Authsignal Client API
Browser / device-facing REST API for fully custom authentication UIs. Supports passkeys, authenticator apps, SMS / WhatsApp OTP, email OTP, magic links, and push challenges. Aut...
Authsignal Management API
REST API for tenant-level configuration: actions and rules, theme and branding, and other tenant settings. Authenticated with a separate management API key.
Authsignal Webhooks
Outbound webhooks delivering authentication and enrollment events, enabling downstream systems to react to user lifecycle changes and challenge outcomes.
Authsignal Node.js SDK
Official server-side SDK for Node.js / TypeScript wrapping the Server API.
Authsignal Python SDK
Official server-side Python SDK for the Authsignal Server API.
Authsignal Java SDK
Official Java / Kotlin SDK for the Authsignal Server API.
Authsignal .NET SDK
Official C# / .NET SDK for the Authsignal Server API.
Authsignal Ruby SDK
Official Ruby SDK for the Authsignal Server API.
Authsignal PHP SDK
Official PHP SDK for the Authsignal Server API.
Authsignal Go SDK
Official Go SDK for the Authsignal Server API.
Authsignal Browser SDK
JavaScript / TypeScript browser SDK wrapping the Client API and WebAuthn / passkey ceremonies for web applications.
Authsignal iOS SDK
Native iOS (Swift) SDK for passkeys, push, and OTP challenges in iOS applications.
Authsignal Android SDK
Native Android (Kotlin) SDK for passkeys, push, and OTP challenges in Android applications.
Authsignal React Native SDK
React Native wrapper around the iOS and Android SDKs.
Authsignal Flutter SDK
Flutter (Dart) SDK wrapping the iOS and Android native SDKs.
Authsignal Actions API
The Actions API from Authsignal — 3 operation(s) for actions.
Authsignal Authenticators API
The Authenticators API from Authsignal — 4 operation(s) for authenticators.
Authsignal Challenges API
The Challenges API from Authsignal — 5 operation(s) for challenges.
Authsignal Devices API
The Devices API from Authsignal — 3 operation(s) for devices.
Authsignal Sessions API
The Sessions API from Authsignal — 5 operation(s) for sessions.
Authsignal Users API
The Users API from Authsignal — 2 operation(s) for users.
Scroll within the panel for all 22 ·
Open Collections 8
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAuthsignal Server Actions API
OPEN COLLECTIONAuthsignal Server Actions Authenticators API
OPEN COLLECTIONAuthsignal Server Actions Challenges API
OPEN COLLECTIONAuthsignal Server Actions Devices API
OPEN COLLECTIONAuthsignal Server Actions Sessions API
OPEN COLLECTIONAuthsignal Server Actions Users API
OPEN COLLECTIONAuthsignal Server API
OPEN COLLECTIONScroll within the panel for all 8 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Authsignal Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Authsignal Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Authsignal — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/authsignal · machine-readable index on apis.io
This is an independent, third-party profile of Authsignal, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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