InAuth (American Express)

InAuth is a mobile-first digital device intelligence and authentication company acquired by American Express in 2018 and now operated within American Express's fraud-management portfolio; its technology also powers Accertify Device Intelligence. The InAuth Security Platform provides persistent device identification (device fingerprinting), malware and criminal-tool detection, rooted/jailbroken-device detection, location and behavioral risk analysis, and transaction risk scoring, delivered primarily through native iOS and Android SDKs embedded in merchant and financial-institution apps. Access is enterprise-gated through the Amex for Developers portal; there is no public self-serve REST API, OpenAPI specification, public package-registry distribution, or InAuth-specific public code repository for the product line.

InAuth (American Express) is profiled on the APIs.io network. Tagged areas include Company, AI Infrastructure, Fraud Prevention, Device Intelligence, and Authentication.

🌐 Visit website 📡 Profile data on GitHub

5.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company AI Infrastructure Fraud Prevention Device Intelligence Authentication Security Mobile SDK Risk Management

Kin Score

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

Composite quality — 5.9/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 0.0 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

13 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 0.0 — up to +20.0 composite points
Developer Ergonomics scores 9.5 — up to +18.1 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/inauth-american-express/apis.yml: open an issue on github.com/api-evangelist/inauth-american-express 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
Mobile SDK Publishers (Play SDK Index, CocoaPods, ADA certification)	undeclared	-	-	-

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.

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: inauth-american-express
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/inauth-american-express.png
name: InAuth (American Express)
description: InAuth is a mobile-first digital device intelligence and authentication company acquired by American Express
  in 2018 and now operated within American Express's fraud-management portfolio; its technology also powers Accertify Device
  Intelligence. The InAuth Security Platform provides persistent device identification (device fingerprinting), malware and
  criminal-tool detection, rooted/jailbroken-device detection, location and behavioral risk analysis, and transaction risk
  scoring, delivered primarily through native iOS and Android SDKs embedded in merchant and financial-institution apps. Access
  is enterprise-gated through the Amex for Developers portal; there is no public self-serve REST API, OpenAPI specification,
  public package-registry distribution, or InAuth-specific public code repository for the product line.
url: https://raw.githubusercontent.com/api-evangelist/inauth-american-express/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bain-capital-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- AI Infrastructure
- Fraud Prevention
- Device Intelligence
- Authentication
- Security
- Mobile SDK
- Risk Management
tags_raw:
- Company
- Ai Infrastructure
- Fraud Prevention
- Device Intelligence
- Authentication
- Security
- Mobile SDK
- Risk Management
apis: []
common:
- type: ParentCompany
  url: https://apis.io/providers/american-express/
  name: American Express
  x-relationship: acquired
  x-evidence: InAuth is a mobile-first digital device intelligence and authentication company acquired by American Express
    in 2018 and now operated within American Express's fraud-management portfolio; its technology also powers Accertify Device
    Intellig
- type: DeveloperPortal
  name: InAuth Product Overview (Amex for Developers)
  url: https://developer.americanexpress.com/products/inauth/overview
- type: GitHubOrganization
  name: American Express on GitHub
  url: https://github.com/americanexpress
- type: LLMsTxt
  name: llms.txt
  url: llms/inauth-american-express-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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