Acuant

Acuant is an identity verification and document authentication platform offering REST APIs and SDKs for ID capture, document authentication, biometric face matching, and passive liveness detection. Originally founded in 1999 as Card Scanning Solutions and acquired by GB Group plc (GBG) in 2021, Acuant's services support AML, KYC, and identity proofing workflows across financial services, healthcare, hospitality, and government sectors. Core APIs include AssureID Connect for document processing, FRM for facial recognition and face matching, Passive Liveness for presentation attack detection, ACAS for cloud authentication, and Ozone for digital identity trust. SDKs are available for iOS, Android, and JavaScript web applications.

Acuant publishes 15 API contracts indexed on the APIs.io network, including Authentication API, Chip Data API, Document Data API, and 12 more. Tagged areas include Identity Verification, Document Authentication, Biometrics, Face Matching, and Liveness Detection.

The Acuant catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Acuant’s developer surface includes authentication, documentation, engineering blog, pricing, support, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.3/100 thin ▬ flat Agent 27/100 agent aware Front door AI 2/6 trace Heartbeat 21/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessEnterprise

4 published contracts

Identity Verification Document Authentication Biometrics Face Matching Liveness Detection KYC AMLID Capture

Kin Score

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

Composite quality — 31.3/100 · thin

Contract Quality 10.7 / 19

Developer Ergonomics 2.5 / 15

Access Clarity 2.8 / 15

Operational Transparency 2.1 / 10

Contract Governance 0.9 / 9

Discoverability 5.4 / 8

Regulatory Posture 2.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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/.

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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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

8 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 16.7 — up to +16.7 composite points
Access Clarity scores 18.4 — up to +16.3 composite points
Contract Quality scores 56.8 — up to +10.8 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/acuant/apis.yml: open an issue on github.com/api-evangelist/acuant 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
Biometrics Testing (biometric recognition vendors, identity verification depth)	regulated	38.8 (thin)	-	-

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 15

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

Acuant AssureID Connect API

REST API for document identity verification. Supports creating document transactions, uploading multi-spectral images, extracting data fields, and retrieving authentication resu...

Acuant FRM Face Recognition API

Face recognition and matching API that compares two facial images and returns a match score. Used alongside document verification to confirm the person presenting an ID matches ...

Acuant Passive Liveness API

Liveness detection API that evaluates a selfie image for presentation attacks including printed photos, masks, deepfakes, and face-swap attacks. Returns LivenessAssessment (Live...

Acuant ACAS (Cloud Authentication Service) API

Acuant Cloud Authentication Service (ACAS) provides authentication token management for initializing and authorizing SDK and API sessions. Supports Basic Auth (Base64) credentia...

Acuant Ozone API

Digital identity trust API derived from Acuant's acquisition of Ozone from Mount Airy Group. Provides additional identity intelligence and trust scoring layered on top of docume...

Acuant Authentication API

Token issuance and validation

Acuant Chip Data API

Submit and retrieve contactless chip data

Acuant Document Data API

Upload and retrieve extracted document data

Acuant Document Instances API

Create and manage document processing sessions

Acuant Images API

Submit and retrieve document images

Acuant Liveness API

Passive liveness detection operations

Acuant Metadata API

Supported document types, subscriptions, logs

Acuant Operations for Checking the Status of the Service API

The Operations for Checking the Status of the Service API from Acuant — 1 operation(s) for operations for checking the status of the service.

Acuant Operations for Facial Matching API

The Operations for Facial Matching API from Acuant — 1 operation(s) for operations for facial matching.

Acuant Health Check API

The Health Check API from Acuant — 2 operation(s) for health check.

Scroll for all 15

Open Collections 8

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

Acuant ACAS (Cloud Service) Authentication API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Chip Data API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Document Data API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Document Instances API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Face Match API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Images API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Liveness API

OPEN COLLECTION

Acuant ACAS (Cloud Service) Authentication Metadata API

OPEN COLLECTION

Scroll for all 8

Acuant API pricing

Not yet checked against Acuant's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure.

Plan	Price
IDScan OCR SDK SoftwareLicense	—
AcuantGo Mobile SDK Trial Trial	—
AssureID Connect Enterprise Enterprise	—
FRM + Passive Liveness Enterprise Enterprise	—
Bundled Identity Platform Enterprise	—

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Acuant Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Acuant Rate Limits

0 limits

RATE LIMITS

Service Levels 1

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

Acuant

SLA

FinOps 1

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

Acuant Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Acuant Context

13 classes · 25 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Acuant — jsonschema rules

6 rules · 5 warnings 1 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Acuant Document

5 properties

JSON SCHEMA

Acuant Face Match Result

5 properties

JSON SCHEMA

Acuant Liveness Result

5 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Acuant Create Document Instance Example

4 fields

EXAMPLE

Acuant Face Match Example

4 fields

EXAMPLE

Acuant Passive Liveness Example

4 fields

EXAMPLE

Security Posture 2

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

Acuant Authentication

http · 2 schemes

SECURITY

Acuant Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Acuant Agentic Access

17 operations · 8 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

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: acuant
name: Acuant
description: Acuant is an identity verification and document authentication platform offering REST APIs and SDKs for ID capture,
  document authentication, biometric face matching, and passive liveness detection. Originally founded in 1999 as Card Scanning
  Solutions and acquired by GB Group plc (GBG) in 2021, Acuant's services support AML, KYC, and identity proofing workflows
  across financial services, healthcare, hospitality, and government sectors. Core APIs include AssureID Connect for document
  processing, FRM for facial recognition and face matching, Passive Liveness for presentation attack detection, ACAS for cloud
  authentication, and Ozone for digital identity trust. SDKs are available for iOS, Android, and JavaScript web applications.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://www.acuant.com
    status: 301
    note: declared website redirects to https://www.gbg.com/en-us/ — a different registrable domain (acuant.com -> gbg.com),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/acuant.png
url: https://raw.githubusercontent.com/api-evangelist/acuant/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Identity Verification
- Document Authentication
- Biometrics
- Face Matching
- Liveness Detection
- KYC
- AML
- ID Capture
apis:
- aid: acuant:assureid-connect
  name: Acuant AssureID Connect API
  description: REST API for document identity verification. Supports creating document transactions, uploading multi-spectral
    images, extracting data fields, and retrieving authentication results for over 3,400 global document types including driver's
    licenses, passports, and national IDs. Uses HTTP Basic authentication over HTTPS.
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Document Authentication
  - ID Verification
  - OCR
  - Data Extraction
  properties:
  - type: Documentation
    url: https://www.acuant.com/document-centric-verification
  - type: IntegrationGuide
    url: https://usermanual.wiki/Document/AssureID20Connect20Web20Service20Integration20Guide.153605132/help
- aid: acuant:frm
  name: Acuant FRM Face Recognition API
  description: Face recognition and matching API that compares two facial images and returns a match score. Used alongside
    document verification to confirm the person presenting an ID matches a live selfie capture. Regional endpoints available
    for USA, EU, and AUS.
  humanURL: https://www.acuant.com/biometric-identity-verification/
  baseURL: https://frm.acuant.net
  tags:
  - Face Recognition
  - Biometrics
  - Face Matching
  properties:
  - type: Documentation
    url: https://www.acuant.com/biometric-identity-verification/
- aid: acuant:passive-liveness
  name: Acuant Passive Liveness API
  description: Liveness detection API that evaluates a selfie image for presentation attacks including printed photos, masks,
    deepfakes, and face-swap attacks. Returns LivenessAssessment (Live, NotLive, PoorQuality, Error) and a confidence score.
    ISO/IEC 30107-3 compliant with iBeta PAD Level 1 and Level 2 certification.
  humanURL: https://www.acuant.com/biometric-identity-verification/
  baseURL: https://us.passlive.acuant.net
  tags:
  - Liveness Detection
  - Biometrics
  - Anti-Spoofing
  - Presentation Attack Detection
  properties:
  - type: Documentation
    url: https://www.acuant.com/biometric-identity-verification/
- aid: acuant:acas
  name: Acuant ACAS (Cloud Authentication Service) API
  description: Acuant Cloud Authentication Service (ACAS) provides authentication token management for initializing and authorizing
    SDK and API sessions. Supports Basic Auth (Base64) credential exchange and bearer token issuance. Regional endpoints available
    for USA, EU, AUS, and preview environments.
  humanURL: https://www.acuant.com/integrations/
  baseURL: https://us.acas.acuant.net
  tags:
  - Authentication
  - Token Management
  - Identity
  properties:
  - type: Documentation
    url: https://www.acuant.com/integrations/
- aid: acuant:ozone
  name: Acuant Ozone API
  description: Digital identity trust API derived from Acuant's acquisition of Ozone from Mount Airy Group. Provides additional
    identity intelligence and trust scoring layered on top of document and biometric verification results.
  humanURL: https://www.acuant.com/integrations/
  baseURL: https://ozone.acuant.net
  tags:
  - Identity Trust
  - Fraud Prevention
  - Identity Intelligence
  properties:
  - type: Documentation
    url: https://www.acuant.com/integrations/
- aid: acuant:acuant-authentication-api
  name: Acuant Authentication API
  description: Token issuance and validation
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/acuant-authentication-api-openapi.yml
- aid: acuant:acuant-chip-data-api
  name: Acuant Chip Data API
  description: Submit and retrieve contactless chip data
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Chip Data
  properties:
  - type: OpenAPI
    url: openapi/acuant-chip-data-api-openapi.yml
- aid: acuant:acuant-document-data-api
  name: Acuant Document Data API
  description: Upload and retrieve extracted document data
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Document Data
  properties:
  - type: OpenAPI
    url: openapi/acuant-document-data-api-openapi.yml
- aid: acuant:acuant-document-instances-api
  name: Acuant Document Instances API
  description: Create and manage document processing sessions
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Document Instances
  properties:
  - type: OpenAPI
    url: openapi/acuant-document-instances-api-openapi.yml
- aid: acuant:acuant-images-api
  name: Acuant Images API
  description: Submit and retrieve document images
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Image
  tags_raw:
  - Images
  properties:
  - type: OpenAPI
    url: openapi/acuant-images-api-openapi.yml
- aid: acuant:acuant-liveness-api
  name: Acuant Liveness API
  description: Passive liveness detection operations
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Liveness
  properties:
  - type: OpenAPI
    url: openapi/acuant-liveness-api-openapi.yml
- aid: acuant:acuant-metadata-api
  name: Acuant Metadata API
  description: Supported document types, subscriptions, logs
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Metadata
  properties:
  - type: OpenAPI
    url: openapi/acuant-metadata-api-openapi.yml
- aid: acuant:acuant-operations-for-checking-the-status-of-the-service-api
  name: Acuant Operations for Checking the Status of the Service API
  description: The Operations for Checking the Status of the Service API from Acuant — 1 operation(s) for operations for checking
    the status of the service.
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags: []
  tags_raw:
  - Operations for Checking the Status of the Service
  properties:
  - type: OpenAPI
    url: openapi/acuant-operations-for-checking-the-status-of-the-service-api-openapi.yml
- aid: acuant:acuant-operations-for-facial-matching-api
  name: Acuant Operations for Facial Matching API
  description: The Operations for Facial Matching API from Acuant — 1 operation(s) for operations for facial matching.
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Operations for Facial Matching
  properties:
  - type: OpenAPI
    url: openapi/acuant-operations-for-facial-matching-api-openapi.yml
- aid: acuant:acuant-health-check-api
  name: Acuant Health Check API
  description: The Health Check API from Acuant — 2 operation(s) for health check.
  humanURL: https://www.acuant.com/document-centric-verification
  baseURL: https://services.assureid.net
  tags:
  - Health Check
  properties:
  - type: OpenAPI
    url: openapi/acuant-health-check-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/acuant-agentic-access.yml
- type: DomainSecurity
  url: security/acuant-domain-security.yml
- type: Authentication
  url: authentication/acuant-authentication.yml
- type: Website
  url: https://www.acuant.com
- type: Documentation
  url: https://www.acuant.com/integrations/
- type: GitHubOrg
  url: https://github.com/Acuant
- type: LinkedIn
  url: https://www.linkedin.com/company/acuant
- type: Blog
  url: https://www.acuant.com/blog/
- type: Pricing
  url: https://store.acuant.com/
- type: StatusPage
  url: https://status.acuant.net/
- type: Support
  url: https://support.acuant.com
- type: X
  url: https://x.com/acuantcorp
- type: Plans
  url: plans/acuant-plans-pricing.yml
- type: RateLimits
  url: rate-limits/acuant-rate-limits.yml
- type: FinOps
  url: finops/acuant-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Acuant API — frequently asked questions

Does Acuant have an API?

Yes. APIs.io lists 15 APIs from Acuant, including Acuant AssureID Connect API, Acuant FRM Face Recognition API and Acuant Passive Liveness API, and 12 more.

Is there an OpenAPI specification for the Acuant API?

Yes. APIs.io indexes 10 OpenAPI specifications for Acuant, each linked for download from this page.

How do I authenticate with the Acuant API?

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

How much does the Acuant API cost?

APIs.io lists 5 pricing plans for Acuant, with each plan's price, limits and inclusions under Pricing on this page.

Is the Acuant API ready for AI agents?

Acuant has a Kin Score of 31.3 out of 100 (thin) and an Agent Readiness score of 26.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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