Authenticate with the Thomson Reuters Legal Research API using OAuth 2.0 client credentials flow to obtain a bearer token with appropriate research scopes
Search for the target case by normalized citation string using the search endpoint, specifying content type as cases and the relevant jurisdiction
Retrieve the case record using its platform-internal document identifier, capturing the full text, headnotes, and KeyCite treatment indicators from the response
Call the citing references endpoint for the document ID to retrieve the list of cases and secondary sources that have cited the target case, along with depth-of-treatment metadata (discussed, mentioned, questioned, overruled)
Filter the citing references by treatment flag and date range to identify adverse treatment and generate a negative treatment alert for the research workflow
Known gotchas
The Thomson Reuters Legal Research API is an enterprise product requiring a separately negotiated API agreement; it is distinct from Westlaw's consumer web interface and access is not granted automatically with a standard Westlaw subscription
KeyCite citing reference data is among the most commercially sensitive data Thomson Reuters holds; API terms of service typically prohibit storing or republishing citing reference lists outside the licensed application, which constrains how retrieved data can be persisted
Normalized citation parsing varies by jurisdiction and reporter; submitting a citation in an unexpected format (e.g., omitting the court abbreviation) may return zero results even when the document exists in the database
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claude mcp add --transport http waymark https://mcp.waymark.network/mcp