London Stock Exchange Group · Capability
London Stock Exchange Group LSEG World-Check One API — Client-Watchlist
London Stock Exchange Group LSEG World-Check One API — Client-Watchlist. 2 operations. Lead operation: London Stock Exchange Group Create or update a provider source. Self-contained Naftiko capability covering one London Stock Exchange Group business surface.
What You Can Do
PUT
Createorupdateprovidersource
— London Stock Exchange Group Create or update a provider source
/v1/reference/providers/sources/{identifier}
POST
Savewatchlist
— London Stock Exchange Group Maintain your Watchlist data
/v1/reference/watchlist
MCP Tools
london-stock-exchange-group-create
London Stock Exchange Group Create or update a provider source
idempotent
london-stock-exchange-group-maintain
London Stock Exchange Group Maintain your Watchlist data
read-only
Capability Spec
naftiko: 1.0.0-alpha2
info:
label: London Stock Exchange Group LSEG World-Check One API — Client-Watchlist
description: 'London Stock Exchange Group LSEG World-Check One API — Client-Watchlist. 2 operations. Lead operation: London
Stock Exchange Group Create or update a provider source. Self-contained Naftiko capability covering one London Stock Exchange
Group business surface.'
tags:
- London Stock Exchange Group
- Client-Watchlist
created: '2026-05-19'
modified: '2026-05-19'
binds:
- namespace: env
keys:
LONDON_STOCK_EXCHANGE_GROUP_API_KEY: LONDON_STOCK_EXCHANGE_GROUP_API_KEY
capability:
consumes:
- type: http
namespace: lseg-world-check-one-client-watchlist
baseUri: https://api-worldcheck.refinitiv.com/v2
description: London Stock Exchange Group LSEG World-Check One API — Client-Watchlist business capability. Self-contained,
no shared references.
resources:
- name: reference-providers-sources-identifier
path: /reference/providers/sources/{identifier}
operations:
- name: createorupdateprovidersource
method: PUT
description: London Stock Exchange Group Create or update a provider source
outputRawFormat: json
outputParameters:
- name: result
type: object
value: $.
inputParameters:
- name: Authorization
in: header
type: string
description: The authorization credentials including 'keyId', 'algorithm', 'headers', 'signature' (see 'Security
and Authentication details' documentation section for more d
required: true
- name: Date
in: header
type: string
description: The date and time at which the message was originated in 'RFC 1123' format
required: true
- name: Content-Type
in: header
type: string
description: The media type of the request (e.g., 'application/json')
required: true
- name: Content-Length
in: header
type: integer
description: The length of the request body in octets (8-bit bytes)
required: true
- name: identifier
in: path
type: string
description: Unique identifier for this provider source. Has to be alphanumeric.
required: true
- name: providerSource
in: body
type: string
description: Provider source details
required: true
- name: reference-watchlist
path: /reference/watchlist
operations:
- name: savewatchlist
method: POST
description: London Stock Exchange Group Maintain your Watchlist data
outputRawFormat: json
outputParameters:
- name: result
type: object
value: $.
inputParameters:
- name: Authorization
in: header
type: string
description: The authorization credentials including 'keyId', 'algorithm', 'headers', 'signature' (see 'Security
and Authentication details' documentation section for more d
required: true
- name: Date
in: header
type: string
description: The date and time at which the message was originated in 'RFC 1123' format
required: true
- name: Content-Type
in: header
type: string
description: The media type of the request (e.g., 'application/json')
required: true
- name: Content-Length
in: header
type: integer
description: The length of the request body in octets (8-bit bytes)
required: true
- name: watchlistDataSet
in: body
type: string
description: A collection of maintenance actions to be performed on your Watchlist.
required: true
exposes:
- type: rest
namespace: lseg-world-check-one-client-watchlist-rest
port: 8080
description: REST adapter for London Stock Exchange Group LSEG World-Check One API — Client-Watchlist. One Spectral-compliant
resource per consumed operation, prefixed with /v1.
resources:
- path: /v1/reference/providers/sources/{identifier}
name: reference-providers-sources-identifier
description: REST surface for reference-providers-sources-identifier.
operations:
- method: PUT
name: createorupdateprovidersource
description: London Stock Exchange Group Create or update a provider source
call: lseg-world-check-one-client-watchlist.createorupdateprovidersource
with:
Authorization: rest.Authorization
Date: rest.Date
Content-Type: rest.Content-Type
Content-Length: rest.Content-Length
identifier: rest.identifier
providerSource: rest.providerSource
outputParameters:
- type: object
mapping: $.
- path: /v1/reference/watchlist
name: reference-watchlist
description: REST surface for reference-watchlist.
operations:
- method: POST
name: savewatchlist
description: London Stock Exchange Group Maintain your Watchlist data
call: lseg-world-check-one-client-watchlist.savewatchlist
with:
Authorization: rest.Authorization
Date: rest.Date
Content-Type: rest.Content-Type
Content-Length: rest.Content-Length
watchlistDataSet: rest.watchlistDataSet
outputParameters:
- type: object
mapping: $.
- type: mcp
namespace: lseg-world-check-one-client-watchlist-mcp
port: 9090
transport: http
description: MCP adapter for London Stock Exchange Group LSEG World-Check One API — Client-Watchlist. One tool per consumed
operation, routed inline through this capability's consumes block.
tools:
- name: london-stock-exchange-group-create
description: London Stock Exchange Group Create or update a provider source
hints:
readOnly: false
destructive: false
idempotent: true
call: lseg-world-check-one-client-watchlist.createorupdateprovidersource
with:
Authorization: tools.Authorization
Date: tools.Date
Content-Type: tools.Content-Type
Content-Length: tools.Content-Length
identifier: tools.identifier
providerSource: tools.providerSource
outputParameters:
- type: object
mapping: $.
- name: london-stock-exchange-group-maintain
description: London Stock Exchange Group Maintain your Watchlist data
hints:
readOnly: true
destructive: false
idempotent: false
call: lseg-world-check-one-client-watchlist.savewatchlist
with:
Authorization: tools.Authorization
Date: tools.Date
Content-Type: tools.Content-Type
Content-Length: tools.Content-Length
watchlistDataSet: tools.watchlistDataSet
outputParameters:
- type: object
mapping: $.