md.mostlyright/datasets

up checked 2026-11-11T03:37:32.744Z

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Publisher-provided title

Mostly Right

Publisher-provided description

Search, sample and query open reproducible datasets published as immutable Parquet with schemas.

Summary by lookupd

Search, sample and query open reproducible Parquet datasets with schemas, and manage dataset builds, recipes and visibility.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http datasets https://mostlyright.md/api/mcp

Codex, remote (streamable-http)

codex mcp add datasets --url https://mostlyright.md/api/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "datasets": {
      "url": "https://mostlyright.md/api/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 82)

Publisher-provided text

• search_datasets Ranked search over every public dataset on Mostly Right: titles, summaries, readmes, table titles and column names, most relevant first. No account needed. Exam
• get_dataset One dataset's overview: title, summary, topics, publisher, publication and update dates, canonical page URL, star and table counts, and up to 50 tables with the
• list_tables The tables in one dataset, without the full column schemas — the cheap call when you only need table ids and titles. Example: {"dataset_slug": "kden-metar-hourl
• get_table_schema One public table's columns (name, type, and any published profile such as null counts, distinct counts or ranges), its immutable version_id, and its capabilitie
• sample_rows The publisher's materialized preview of a public table — real rows, no account, no query cost. Private workspace tables are not available here; use query_run on
• get_download_instructions The exact URL, HTTP method and header for downloading one table's current immutable Parquet snapshot, plus whether the publisher enabled it. Example: {"table_id
• get_access_instructions What this server does anonymously, what needs an account, the two API key classes and what each unlocks, the OAuth option, the signup URL, and the numbered step
• search Search every public dataset on Mostly Right and return up to 20 matches, most relevant first, as {results: [{id, title, url, snippet, matching_table, why}]}, wh
• fetch The full public document for one dataset as Markdown: summary, facts, access instructions, and every table with its columns, types, descriptions and units. No a
• query_table A bounded, structured query over one table's current version. NO SQL: send columns, filters, order_by, aggregates, group_by and limit as JSON. Example: {"table_
• search_table Ranked search over one public table's rows, the same search its dataset page runs: words, prefixes, typos and spelling correction, served from the table's searc
• catalog_search Search a sealed snapshot of public data sources for feeds that might answer a question — the first move when you need a source and do not already know one. Exam
• list_connected_datasets The public datasets the authenticated workspace has used so far. Takes no arguments. query_table is not limited to this list: a key reads any public dataset (co
• connect_dataset Connects one public dataset to the authenticated workspace so its tables become queryable and downloadable. This is the gate every keyed read passes. Example: {
• create_dataset Creates an empty dataset in your workspace and returns its ids. A dataset is the container a recipe binds to; it exists before it has a description, a recipe or
• configure_dataset_layout Save ordered sections, table display titles and descriptions, collapsed sections and a separate default opening table. Read get_my_dataset for dataset_layout an
• configure_table_view Saves one versioned contextual view for this table after its first successful build. Inspect its intent, actual schema and a bounded sample first. Prefer table
• update_dataset main_table_id names the table the dataset page leads with: the Data tab opens on it and the other tables keep their configured sections, or are listed as helper
• generate_cover Generates the dataset's branded 1200×630 cover and attaches it: the page, the Community tile and the share card all wear it. Every dataset gets exactly one, gen
• set_dataset_visibility Changes who can read a dataset: private (this workspace only), link (anyone holding an unlisted address, which this returns) or public (listed on Mostly Right f
• archive_dataset Retires a whole dataset: every reader loses access, its public page and unlisted link are withdrawn, and its name is free for a new dataset. Nothing it built is
• list_my_datasets Every dataset this workspace owns, most recently updated first — not the public catalog. Use it to find the dataset_id for a dataset you or a colleague created
• get_my_dataset One workspace dataset in build terms: name, description, status, each table with its build state, promotion state and live version, the latest run, and any run
• list_dataset_events The dataset's own durable log, newest first: created, renamed or re-described, a recipe registered, each run queued, held, started, progressing and finished, a
• list_recipes Lists immutable recipe coordinates in this workspace, optionally for one table_id from get_my_dataset. current_only defaults to true; false includes older revis
• get_recipe Reads the actual immutable registered recipe, including sources, SQL and checks. Use list_recipes for current table revisions, or recipe_id from get_run for the
• register_recipe Registers the JSON recipe that says where the data comes from, how it is shaped and what must be true of it. The server canonicalizes the document and computes
• explain_recipe Checks a recipe document without registering, writing or running anything — the same evaluator that admits refreshes, plus the fast-path features the harness's
• forecast_recipe Says what one full or refresh run of a registered recipe would ask of its sources, before anything is started: per-source request ceilings, runtime at the ceili
• test_recipe Starts a recipe preflight: a bounded rehearsal of a full run that fetches at most max_pages_per_source pages of each listing (default 1, max 5) and max_upstream

Details

• Version: 2.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 355 ms
• First indexed: 2026-11-01T10:07:22.800Z
• Last seen in registry: 2026-11-01T10:07:22.800Z
• Website: https://mostlyright.md

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