Payaut

Payaut was a fintech company offering embedded payment solutions for platforms. The payaut.com domain now redirects to Nuvei’s embedded payments page, indicating that Payaut has been acquired or integrated into Nuvei. The company focused on seamless payment integration, supporting global payment methods, payouts, and real‑time transactions for marketplaces, SaaS platforms, and other digital services.

Payaut is listed with 1 API on the APIs.io network. Tagged areas include Fintech, Payments, Embedded Payments, Platforms, and APIs.

The Payaut catalog on APIs.io includes 1 Spectral governance ruleset.

Payaut’s developer surface includes changelog, engineering blog, documentation, getting-started guide, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.2/100 emerging Agent 17/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Fintech Payments Embedded PaymentsPlatformsAPIs

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 25.2/100 · emerging

Contract Quality 2.2 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 5.8 / 17

Operational Transparency 1.7 / 11

Contract Governance 1.9 / 10

Discoverability 5.0 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 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 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

Regulatory Posture applies to this provider. Its tags matched the Payments 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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It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/payaut/"><img src="https://apis.io/badge/payaut/card.svg" alt="Payaut on APIs.io — Kin Score by API Evangelist"></a>

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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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

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 10.5 — up to +22.4 composite points
Developer Ergonomics scores 33.3 — up to +13.3 composite points
Access Clarity scores 34.2 — up to +13.2 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/payaut/apis.yml: open an issue on github.com/api-evangelist/payaut 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.

Payaut API

Embedded payments API documented on Nuvei developer portal.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Payaut API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Payaut Authentication

1 scheme

SECURITY

Payaut Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: payaut
name: Payaut
image: https://cdn.prod.website-files.com/69bbe852f53519cb6c89312c/69dcf015a4f8a55dc3098da6_OG-image.jpg
description: Payaut was a fintech company offering embedded payment solutions for platforms. The payaut.com domain now redirects
  to Nuvei’s embedded payments page, indicating that Payaut has been acquired or integrated into Nuvei. The company focused
  on seamless payment integration, supporting global payment methods, payouts, and real‑time transactions for marketplaces,
  SaaS platforms, and other digital services.
url: https://artifacts.apis.io/payaut/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Fintech
- Payments
- Embedded Payments
- Platforms
- APIs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: LLMsTxt
  url: llms/payaut-llms.txt
- type: Hosts
  url: hosts/payaut-hosts.yml
- type: Vendors
  url: vendors/payaut-vendors.yml
- type: TermsOfService
  url: https://nuvei.com/terms/
- type: PrivacyPolicy
  url: https://nuvei.com/privacy-notice/
- type: Newsroom
  url: https://www.nuvei.com/post-category/newsroom
- type: Login
  url: https://www.nuvei.com/login
- type: ChangeLog
  url: https://docs.nuvei.com/documentation/release-notes/
- type: Blog
  url: https://www.nuvei.com/post-category/blog
- type: DomainSecurity
  url: security/payaut-domain-security.yml
- type: Website
  url: https://payaut.com/
- type: Documentation
  url: https://docs.nuvei.com/documentation/home/
- type: DeveloperPortal
  url: https://docs.nuvei.com/
- type: GettingStarted
  url: https://docs.nuvei.com/documentation/online-payments/
apis:
- name: Payaut API
  description: Embedded payments API documented on Nuvei developer portal.
  humanURL: https://docs.nuvei.com/documentation/home/
  baseURL: null
  aid: payaut:payaut-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is available but no OpenAPI/AsyncAPI/GraphQL spec could be retrieved.
  evidence:
  - url: https://api.payaut.com/openapi.json
    status: 303
  checked: '2026-10-29'
x-backed-by:
- gradient-ventures
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 8
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Payaut API — frequently asked questions

Does Payaut have an API?

Yes. APIs.io lists 1 API from Payaut, including Payaut API.

Is there an OpenAPI specification for the Payaut API?

Yes. APIs.io indexes 1 OpenAPI specification for Payaut, each linked for download from this page.

How do I authenticate with the Payaut API?

Payaut uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Payaut Authentication.

Is the Payaut API ready for AI agents?

Payaut has a Kin Score of 25.2 out of 100 (emerging) and an Agent Readiness score of 17.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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