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Mostly Right MCP

v2.0.0 changelog · 9

md.mostlyright/datasets

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

transport:streamable-http tools:84

Target client

run in your project directory

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

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

search_datasets Read-only

search datasets

get_dataset Read-only

get dataset

list_tables Read-only

list tables

get_table_schema Read-only

get table schema

sample_rows

sample rows

get_download_instructions Read-only

get download instructions

get_access_instructions Read-only

get access instructions

search Read-only

search

fetch Read-only

fetch

query_table Read-only

query table

search_table Read-only

search table

catalog_search

catalog search

list_connected_datasets Read-only

list connected datasets

connect_dataset

connect dataset

create_dataset Mutating

create dataset

configure_dataset_layout

configure dataset layout

configure_table_view

configure table view

update_dataset Mutating

update dataset

generate_cover

generate cover

set_dataset_visibility Mutating

set dataset visibility

archive_dataset

archive dataset

list_my_datasets Read-only

list my datasets

get_my_dataset Read-only

get my dataset

list_dataset_events Read-only

list dataset events

list_recipes Read-only

list recipes

get_recipe Read-only

get recipe

register_recipe

register recipe

explain_recipe

explain recipe

forecast_recipe

forecast recipe

test_recipe

test recipe

propose_revision

propose revision

replay_run

replay run

start_run Mutating

start run

confirm_run

confirm run

approve_full_run

approve full run

cancel_run Mutating

cancel run

get_run Read-only

get run

run_events Mutating

run events

list_runs Read-only

list runs

compare_runs

compare runs

query_run Read-only

query run

sample_table

sample table

list_column_values Read-only

list column values

preview_table_search

preview table search

run_artifacts Mutating

run artifacts

get_artifact_download Read-only

get artifact download

write_note Mutating

write note

list_notes Read-only

list notes

list_table_parts Read-only

list table parts

verify_run

verify run

promote_table

promote table

reschedule_table

reschedule table

demote_table

demote table

refresh_table

refresh table

resync_table

resync table

archive_table

archive table

rename_table Mutating

rename table

get_table Read-only

get table

diagnose_table

diagnose table

list_source_credentials Read-only

list source credentials

list_models Read-only

list models

suggest_enrichments

suggest enrichments

normalize_reader_options

normalize reader options

start_source_inspection Mutating

start source inspection

get_source_inspection Read-only

get source inspection

probe_source

probe source

get_source_probe Read-only

get source probe

get_run_attempts Read-only

get run attempts

get_recipe_readiness Read-only

get recipe readiness

inspect_table_search Read-only

inspect table search

configure_table_search

configure table search

build_table_search

build table search

activate_table_search

activate table search

get_search_job Read-only

get search job

get_search_evaluation Read-only

get search evaluation

add_search_cases Mutating

add search cases

cancel_search_job Mutating

cancel search job

register_stream_document

register stream document

create_stream_registry Mutating

create stream registry

start_stream Mutating

start stream

get_stream Read-only

get stream

control_stream_subscription

control stream subscription

ask_support

ask support

get_support_answer Read-only

get support answer

All 84 tools, one page each

3 prompts you invoke yourself

7 resources you attach as context

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.