London Stock Exchange Group website screenshot

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.

50.1/100 developing ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs
FinancialStock ExchangeMarket DataKYCCompliance

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data 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/.
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 github.com/api-evangelist/london-stock-exchange-group: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 15

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

LSEG World-Check One Case API

Create, screen, update, archive, assign, link, and search screening cases; review and resolve screening results; enable ongoing screening and retrieve ongoing screening updates ...

LSEG World-Check One Media-Check API

Retrieve MediaCheck adverse-media screening results, article metadata and content, attach or detach articles to cases, and mark articles as reviewed.

LSEG World-Check One Smart Filter API

Enable, disable, and retrieve the MediaCheck smart filter on screening cases.

LSEG World-Check One Audit API

Retrieve filtered audit events for screening cases to evidence compliance workflows.

LSEG World-Check One Case Rating API

Retrieve and update the risk rating on a screening case.

LSEG World-Check One Linked Cases API

Create, retrieve, and delete relationships between screening cases.

LSEG World-Check One Group API

Retrieve groups, case templates, and resolution toolkits that govern how cases are created and results resolved.

LSEG World-Check One User API

List active users in the client account for case assignment.

LSEG World-Check One Reference API

Reference data for screening - countries, nationalities, providers, search filters, World-Check profiles and records, and PEP details.

LSEG World-Check One Client Watchlist API

Maintain custom client watchlist sources and records for screening.

LSEG World-Check One Reporting API

Submit asynchronous case report requests, poll report status, and download completed reports.

LSEG World-Check One Upcoming API

Report status listing, report error details, and report cancellation operations.

LSEG World-Check One Passport Check API

Generate machine-readable zone (MRZ) data for passport verification.

LSEG World-Check One Zero Footprint Screening API

Zero Footprint Screening surface - synchronous screening, groups, case templates, reference data, and client watchlist maintenance without persisting case data.

LSEG World-Check One API Info API

Retrieve information about the public API, including the current API version.

Scroll for all 15

Open Collections 16

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

API Collection

OPEN COLLECTION

Scroll for all 16

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

FinOps 1

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

Security Posture 2

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

London Stock Exchange Group Authentication

oauth2/hmac-signature · 2 schemes

SECURITY

London Stock Exchange Group Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

London Stock Exchange Group Agentic Access

78 operations · 48 acting · 2 human-in-the-loop

78 operations · 48 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Build 3

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
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
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: 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: '0.23'
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: X-MCPServerCandidate
  url: mcp/london-stock-exchange-group-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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

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