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 for KYC and third-party due diligence.

Operations 30

HEAD /caseIdentifiers London Stock Exchange Group Check if a given caseId is available for use #
GET /caseReferences London Stock Exchange Group Return the CaseReference (caseId, caseSystemId) for… #
POST /cases London Stock Exchange Group Create a new case #
POST /cases/screeningRequest London Stock Exchange Group Perform synchronous screening for a new case #
PUT /cases/{caseSystemId} London Stock Exchange Group Update an existing Case by its caseSystemId #
PATCH /cases/{caseSystemId} London Stock Exchange Group Partial update an existing Case by its caseSystemId #
GET /cases/{caseSystemId} London Stock Exchange Group Fetch Full Case Details #
DELETE /cases/{caseSystemId} London Stock Exchange Group Delete a Case #
POST /cases/{caseSystemId}/screeningRequest London Stock Exchange Group Request full or delta screening for an existing Case #
PUT /cases/{caseSystemId}/ongoingScreening London Stock Exchange Group Enable OGS for a Case #
DELETE /cases/{caseSystemId}/ongoingScreening London Stock Exchange Group Disable OGS for a Case #
PUT /cases/{caseSystemId}/archive London Stock Exchange Group Archive a Case #
DELETE /cases/{caseSystemId}/archive London Stock Exchange Group Unarchive a Case #
POST /cases/bulk/archive London Stock Exchange Group Bulk Update Archive States #
POST /cases/bulk/assign London Stock Exchange Group Bulk Update Case Assignments #
POST /cases/bulk/delete London Stock Exchange Group Bulk Delete Cases #
POST /cases/bulk/move London Stock Exchange Group Bulk Move Cases Between Groups #
POST /cases/bulk/ongoingScreening London Stock Exchange Group Bulk Update Ongoing Screening States #
POST /cases/bulk/link London Stock Exchange Group Bulk Update Case Links #
GET /cases/{caseSystemId}/results London Stock Exchange Group Get collection of Results for a Case by its… #
PUT /cases/{caseSystemId}/results/review London Stock Exchange Group Add a review remark to the specified result IDs for… #
PUT /cases/{caseSystemId}/results/resolution London Stock Exchange Group Resolves a list of results #
POST /cases/ongoingScreeningUpdates London Stock Exchange Group Get ongoing screening updates #
PUT /cases/{caseSystemId}/assignee London Stock Exchange Group Assign the Case to a User #
DELETE /cases/{caseSystemId}/assignee London Stock Exchange Group Unassign a Case #
POST /cases/search London Stock Exchange Group Search for Cases based on specified criteria using… #
POST /cases/summaries London Stock Exchange Group User activity monitoring. Initial request #
POST /cases/summaries/cursor London Stock Exchange Group User activity monitoring. Subsequent request #
POST /cases/saveAndScreen London Stock Exchange Group Save and screen multiple cases #
POST /cases/screeningStatus London Stock Exchange Group Retrieve case screening status and aggregated… #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/lseg-world-check-one-case-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

london-stock-exchange-group-case-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: London Stock Exchange Group LSEG World-Check One Case API
  description: The World-Check One API enables developers to integrate the next generation of LSEG screening capabilities into existing workflows and internal systems (such as CRMs) in order to help streamline the processes for on-boarding, KYC and third party due diligence.
  version: 2.61.0
  termsOfService: https://www.lseg.com/en/risk-intelligence/screening-solutions/world-check-kyc-screening/one-kyc-verification
  contact:
    name: LSEG World-Check One API Q&A
    url: https://community.developers.refinitiv.com/index.html
    email: c3r.api1@lseg.com
  license:
    name: Commercial
    url: https://www.lseg.com/en/risk-intelligence/screening-solutions/world-check-kyc-screening/one-kyc-verification
servers:
- url: https://api-worldcheck.refinitiv.com/v2
tags:


# --- truncated at 32 KB (189 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/london-stock-exchange-group/refs/heads/main/openapi/london-stock-exchange-group-case-api-openapi.yml