Worldline

Worldline is a global payments and financial services provider offering acquiring, processing, and digital payment solutions for merchants and partners. Through its developer portal, Worldline exposes APIs that enable partners to integrate card‑based authorizations, refunds, recurring payments, and other transaction services. The platform supports multiple currencies, strong customer authentication, and comprehensive reporting, helping businesses streamline payment operations worldwide.

Worldline is listed with 1 API on the APIs.io network: Acquiring API. Tagged areas include Payments, Financial Services, Acquiring, and Partners.

The Worldline catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Worldline’s developer surface includes getting-started guide, documentation, support, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.7/100 thin Agent 20/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 API

Payments Financial Services Acquiring Partners

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 32.7/100 · thin

Contract Quality 9.7 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 4.7 / 17

Operational Transparency 2.1 / 11

Contract Governance 0.5 / 10

Discoverability 4.6 / 9

Regulatory Posture 1.7 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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 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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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 Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

10 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 27.7 — up to +14.5 composite points Ask about this →
Contract Quality scores 45.6 — up to +13.6 composite points Ask about this →
Contract Governance scores 4.5 — up to +11.5 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/worldline/apis.yml: open an issue on github.com/api-evangelist/worldline 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 →

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 1

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

Acquiring API

Worldline Acquiring API provides partners integration for payment services.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Worldline Webhooks

ASYNCAPI

Security Posture 1

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

Worldline Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Webhooks

Webhooks

Lifecycle

Lifecycle

Conformance

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

DeclineCodes

DeclineCodes

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Deprecation

Deprecation

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: worldline
name: Worldline
description: Worldline is a global payments and financial services provider offering acquiring, processing, and digital payment
  solutions for merchants and partners. Through its developer portal, Worldline exposes APIs that enable partners to integrate
  card‑based authorizations, refunds, recurring payments, and other transaction services. The platform supports multiple currencies,
  strong customer authentication, and comprehensive reporting, helping businesses streamline payment operations worldwide.
url: https://artifacts.apis.io/worldline/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- Payments
- Financial Services
- Acquiring
- Partners
tags_raw:
- Payments
- Financial Services
- Acquiring
- APIs
- Partners
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Webhooks
  url: asyncapi/worldline-webhooks.yml
- type: Deprecation
  url: https://docs.connect.worldline-solutions.com/documentation/api-versioning/
- type: Lifecycle
  url: lifecycle/worldline-lifecycle.yml
- type: DeclineCodes
  url: errors/worldline-decline-codes.yml
- type: Conformance
  url: conformance/worldline-conformance.yml
- type: Hosts
  url: hosts/worldline-hosts.yml
- type: Vendors
  url: vendors/worldline-vendors.yml
- type: SDKs
  url: packages/worldline-packages.yml
- type: Packages
  url: packages/worldline-packages.yml
- type: Login
  url: https://worldline.com/en/home/top-navigation/login
- type: GettingStarted
  url: https://docs.connect.worldline-solutions.com/getting-started/index
- type: GitHubOrganization
  url: https://github.com/worldline
- type: DomainSecurity
  url: security/worldline-domain-security.yml
- type: Website
  url: https://worldline.com/
- type: Documentation
  url: https://docs.acquiring.worldline-solutions.com/api-reference
- type: DeveloperPortal
  url: https://developer.worldline.com/en/home
- type: Support
  url: https://support.worldline.com
- type: PrivacyPolicy
  url: https://developer.worldline.com/en/compliancy/privacy
- type: TermsOfService
  url: https://developer.worldline.com/en/compliancy/terms-of-use
apis:
- name: Acquiring API
  description: Worldline Acquiring API provides partners integration for payment services.
  humanURL: https://docs.acquiring.worldline-solutions.com/api-reference
  baseURL: https://api.acquiring.worldline-solutions.com
  properties:
  - type: OpenAPI
    url: openapi/worldline-acquiring-openapi.yml
  aid: worldline:acquiring-api
x-submission-notes: 'The latest spec can always be found at https://docs.acquiring.worldline-solutions.com/OpenAPI/acquiring_openapi_latest.yaml.  The
  API is for partners who act on behalf of merchants. It exposes a growing number of services through a single integration.
  Long term goal is to provide partners access to '
x-submission-probe: 2026-11-07 200 https://docs.acquiring.worldline-solutions.com/ ctl=404
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 15
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Worldline API — frequently asked questions

Does Worldline have an API?

Yes. APIs.io lists 1 API from Worldline, including Acquiring API.

Is there an OpenAPI specification for the Worldline API?

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

Is the Worldline API ready for AI agents?

Worldline has a Kin Score of 32.7 out of 100 (thin) and an Agent Readiness score of 20.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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