lseg.com
LSEG provides financial markets data, analytics, trading, and risk products. Its developer portal catalogs APIs and tools for accessing market data, identifiers, analytics, and screening services.
LSEG exposes documented HTTP APIs including Open PermID and LSEG Data Platform APIs, plus a known OAuth-protected MCP server at https://api.analytics.lseg.com/lfa/mcp/server-cl.
- LSEG MCP serverdiscovered
- Open PermID APIsdiscovered
- LSEG Data Platform APIsdiscovered
For direct cloud access to LSEG Data Platform, obtain a Client ID (Service ID) and Client Secret from LSEG. The Access Credentials guide says these are provided in a welcome email and that you should contact your LSEG Account Manager to acquire platform credentials. The same guide also describes the older OAuth 2.0 password-grant variant and notes that version 2 uses service IDs/client secrets.
Generate an application key at the App Key Generator. The Access Credentials guide states that platform access via the libraries requires an App Key for the older OAuth v1/password-grant path, and that users can generate/manage application IDs there.
Register for a PermID.org account. The Getting Started guide says your access token is assigned and emailed after registration, and existing users can log in to PermID.org and use Display my API token to view it. The same token can be used for all PermID APIs, including Entity Search, Record Matching, and Intelligent Tagging.
conventions · 0/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✗
/llms.txt - API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing