London Stock Exchange Group

London Stock Exchange Group plc is a United Kingdom-based stock exchange and financial information company headquartered in the City of London, England. LSEG provides capital markets, data and analytics, risk management, and post-trade services including the World-Check screening platform for KYC and anti-money-laundering due diligence.

London Stock Exchange Group publishes 15 APIs on the APIs.io network, including LSEG World-Check One Case API, LSEG World-Check One Media-Check API, LSEG World-Check One Smart Filter API, and 12 more. Tagged areas include Financial, Stock Exchange, Market Data, KYC, and Compliance.

London Stock Exchange Group’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.7/100 developing ▬ flat Agent 42/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

15 APIs 1 MCP Servers

FinancialStock ExchangeMarket DataKYCCompliance

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 53.7/100 · developing

Contract Quality 8.1 / 25

Developer Ergonomics 13.8 / 20

Commercial Clarity 14.7 / 20

Operational Transparency 6.8 / 13

Governance 1.4 / 12

Discoverability 9.3 / 10

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/london-stock-exchange-group: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 15

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Documented rate limits and quota policies.

London Stock Exchange Group Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

WellKnown

MCPServer

LLMsTxt

AgentSkill

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Components

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

Support

Community

StatusPage

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Source (apis.yml)

aid: london-stock-exchange-group
name: London Stock Exchange Group
description: London Stock Exchange Group plc is a United Kingdom-based stock exchange and financial information company headquartered
  in the City of London, England. LSEG provides capital markets, data and analytics, risk management, and post-trade services
  including the World-Check screening platform for KYC and anti-money-laundering due diligence.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/london-stock-exchange-group.png
tags:
- Financial
- Stock Exchange
- Market Data
- KYC
- Compliance
url: https://raw.githubusercontent.com/api-evangelist/london-stock-exchange-group/refs/heads/main/apis.yml
created: '2024-04-14'
modified: '2026-07-22'
specificationVersion: '0.19'
apis:
- aid: london-stock-exchange-group:lseg-world-check-one-case-api
  name: LSEG World-Check One Case API
  description: Create, screen, update, archive, assign, link, and search screening cases; review and resolve screening results;
    enable ongoing screening and retrieve ongoing screening updates for KYC and third-party due diligence.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Screening
  - Compliance
  - Cases
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-case-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-case-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-media-check-api
  name: LSEG World-Check One Media-Check API
  description: Retrieve MediaCheck adverse-media screening results, article metadata and content, attach or detach articles
    to cases, and mark articles as reviewed.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Screening
  - Adverse Media
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-media-check-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-media-check-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-smart-filter-api
  name: LSEG World-Check One Smart Filter API
  description: Enable, disable, and retrieve the MediaCheck smart filter on screening cases.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Screening
  - Adverse Media
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-smart-filter-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-smart-filter-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-audit-api
  name: LSEG World-Check One Audit API
  description: Retrieve filtered audit events for screening cases to evidence compliance workflows.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Audit
  - Compliance
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-audit-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-audit-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-case-rating-api
  name: LSEG World-Check One Case Rating API
  description: Retrieve and update the risk rating on a screening case.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Risk
  - Compliance
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-case-rating-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-case-rating-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-linked-cases-api
  name: LSEG World-Check One Linked Cases API
  description: Create, retrieve, and delete relationships between screening cases.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Cases
  - Compliance
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-linked-cases-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-linked-cases-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-group-api
  name: LSEG World-Check One Group API
  description: Retrieve groups, case templates, and resolution toolkits that govern how cases are created and results resolved.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Administration
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-group-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-group-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-user-api
  name: LSEG World-Check One User API
  description: List active users in the client account for case assignment.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Administration
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-user-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-user-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-reference-api
  name: LSEG World-Check One Reference API
  description: Reference data for screening - countries, nationalities, providers, search filters, World-Check profiles and
    records, and PEP details.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Reference Data
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-reference-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-reference-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-client-watchlist-api
  name: LSEG World-Check One Client Watchlist API
  description: Maintain custom client watchlist sources and records for screening.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Watchlist
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-client-watchlist-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-client-watchlist-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-reporting-api
  name: LSEG World-Check One Reporting API
  description: Submit asynchronous case report requests, poll report status, and download completed reports.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Reporting
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-reporting-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-reporting-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-upcoming-api
  name: LSEG World-Check One Upcoming API
  description: Report status listing, report error details, and report cancellation operations.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Reporting
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-upcoming-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-upcoming-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-passport-check-api
  name: LSEG World-Check One Passport Check API
  description: Generate machine-readable zone (MRZ) data for passport verification.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Identity Verification
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-passport-check-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-passport-check-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-zfs-api
  name: LSEG World-Check One Zero Footprint Screening API
  description: Zero Footprint Screening surface - synchronous screening, groups, case templates, reference data, and client
    watchlist maintenance without persisting case data.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-zero-footprint-screening-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Screening
  - Zero Footprint
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-zfs-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-zfs-api-overlay.yaml
- aid: london-stock-exchange-group:lseg-world-check-one-api-info-api
  name: LSEG World-Check One API Info API
  description: Retrieve information about the public API, including the current API version.
  humanURL: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api
  baseURL: https://api-worldcheck.refinitiv.com/v2
  tags:
  - KYC
  - Metadata
  properties:
  - type: Documentation
    url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
  - type: OpenAPI
    url: openapi/london-stock-exchange-group-api-info-api-openapi.yml
  - type: Overlay
    url: overlays/london-stock-exchange-group-api-info-api-overlay.yaml
common:
- type: Website
  url: https://www.lseg.com/
- type: DeveloperPortal
  url: https://developers.lseg.com/
- type: Documentation
  url: https://developers.lseg.com/en/api-catalog
- type: APIReference
  url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
- type: GettingStarted
  url: https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/quick-start
- type: Support
  url: https://support.lseg.com/
- type: Community
  url: https://community.developers.lseg.com/
- type: Blog
  url: https://developers.lseg.com/en/article-catalog
- type: SignUp
  url: https://developers.lseg.com/en/register
- type: StatusPage
  url: https://liveservice.lseg.com/
- type: TermsOfService
  url: https://www.lseg.com/en/policies/website-terms-of-use
- type: PrivacyPolicy
  url: https://www.lseg.com/en/policies/privacy-statement
- type: GitHubOrganization
  url: https://github.com/LSEG
- type: LinkedIn
  url: https://www.linkedin.com/company/london-stock-exchange-group
- type: Authentication
  url: authentication/london-stock-exchange-group-authentication.yml
- type: Packages
  url: packages/london-stock-exchange-group-packages.yml
- type: SDKs
  url: packages/london-stock-exchange-group-packages.yml
- type: Components
  url: components/london-stock-exchange-group-components.yml
- type: WellKnown
  url: well-known/london-stock-exchange-group-well-known.yml
- type: MCPServer
  url: mcp/london-stock-exchange-group-mcp.yml
- type: LLMsTxt
  url: llms/london-stock-exchange-group-llms.txt
- type: Conformance
  url: conformance/london-stock-exchange-group-conformance.yml
- type: ErrorCatalog
  url: errors/london-stock-exchange-group-problem-types.yml
- type: Lifecycle
  url: lifecycle/london-stock-exchange-group-lifecycle.yml
- type: Sandbox
  url: sandbox/london-stock-exchange-group-sandbox.yml
- type: Conventions
  url: conventions/london-stock-exchange-group-conventions.yml
- type: DataModel
  url: data-model/london-stock-exchange-group-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: RateLimits
  url: rate-limits/london-stock-exchange-group-rate-limits.yml
- type: Plans
  url: plans/london-stock-exchange-group-plans-pricing.yml
- type: FinOps
  url: finops/london-stock-exchange-group-finops.yml
- type: AgenticAccess
  url: agentic-access/london-stock-exchange-group-agentic-access.yml
- type: DomainSecurity
  url: security/london-stock-exchange-group-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com