Lanyardo: the site's own MCP server — dataset; every answer cites the site.
Scored across 7 tools
Each tool has a clearly distinct purpose: schema inspection, exact match lookup, substring search, comparison of multiple values, stats computation, top/bottom ranking, and provenance metadata. There is no ambiguity about when to use which tool.
All tools follow a uniform 'dataset_' prefix followed by a descriptive noun or verb (columns, compare, provenance, row, search, stats, top). The naming pattern is consistent and predictable.
Seven tools is well-scoped for a dataset querying server. Each tool covers a distinct operation without redundancy, and the count feels neither sparse nor bloated.
The surface covers schema discovery, data retrieval via exact match, substring search, multi-value comparison, numeric statistics, top/bottom ranking, and provenance. For a read-only dataset server, this is a complete set with no obvious gaps.
The columns, which of them are numeric, the row count and the provenance banner of the Lanyardo dataset. Call this first to learn the schema.
Inputs: no named parameters.
The rows of the Lanyardo dataset whose column is any of the given values, in the order given — for "X vs Y" questions.
Inputs: column (required), values (required).
The source, the date it was computed, the licence and the citation for the Lanyardo dataset. Read this to attribute a figure correctly.
Inputs: no named parameters.
The rows of the Lanyardo dataset where a column equals a value exactly (case-insensitive).
Inputs: value (required), column (required).
Rows of the Lanyardo dataset whose cells contain the query (case-insensitive), up to 50.
Inputs: query (required), limit.
count, min, max, mean, median and sum of a numeric column of the Lanyardo dataset (grouping commas and currency are handled; non-numeric rows are excluded and counted).
Inputs: column (required).
The highest (or lowest) rows of the Lanyardo dataset by a numeric column — "which is the most/least X".
Inputs: column (required), limit, ascending.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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