MotherDuck MCP

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Cancel an in-flight run of a flight. Identified by the flight UUID and the sequential run number (from list_flight_runs). Returns `canceled: true` on a successful transition; calling on an already-terminal run or one that doesn't exist returns a tool error.

Create a new MotherDuck flight. Read the flight guide before you create your first flight. A flight is a Python entrypoint (`source_code`) plus an optional `requirements_txt` that runs on MotherDuck compute. Optionally provide an `access_token_name` so the flight can connect to MotherDuck at runtime; omit it to use the default MotherDuck Flights access token. Optionally provide a 5-field cron expression to run on a schedule, an optional `max_runtime_sec` to cap how long a run may take, and an optional `instance_type` (F4, F16 or F32) to pick the runner size. Use flights for ELT/ETL pipelines, loading external data into MotherDuck, refreshing materialized views, or any recurring Python job that reads/writes MotherDuck data.

Create a new guide — a markdown document that agents read to answer this org's data questions correctly (metric definitions, join/filter conventions, pitfalls). Group related guides with a lowercase kebab-case `topic` (e.g. 'revenue-billing' or 'core/metrics'); omit it for a guide without a topic. Visibility is controlled by `access`: 'user' (private, default) or 'organization' (org-wide, permission-gated). Personal dive/flight style guides belong under topic 'dives' / 'flights' with access 'user'. Attach `references` to the 1–5 objects the guide is authoritative about.

Delete a dive by ID. This action is permanent and cannot be undone.

Permanently delete a flight, its versions, schedule, and run history. This action cannot be undone.

Soft-delete a guide while preserving its version history. Identify it by `uuid`.

Execute a read-only DuckDB query on behalf of a dive. This tool is used by the dive viewer and is not intended for direct use by the AI assistant.

Edit a dive's content by applying one or more text replacements, then save to MotherDuck. Accepts `id` (dive UUID) and `edits` (an array of {old_string, new_string, replace_all?} objects). Reads the current content from MotherDuck, applies edits in sequence, validates, and persists. Example: {id: '...', edits: [{old_string: 'foo', new_string: 'bar'}]}. old_string must be unique unless replace_all is true. No prior read_dive call is needed.

Edit a flight's source_code by applying one or more text replacements, then save as a new FlightVersion. Accepts `id` (flight UUID) and `edits` (an array of {old_string, new_string, replace_all?} objects). Reads the current source_code, applies edits in sequence, validates, and persists. Example: {id: '...', edits: [{old_string: 'foo', new_string: 'bar'}]}. old_string must be unique unless replace_all is true. No prior get_flight call is needed.

Edit a guide's markdown body by applying one or more text replacements, then save as a new version. Identify the guide by `uuid`. Reads the stored guide, applies edits in sequence, and persists. Example: {uuid: '<guide uuid>', edits: [{old_string: 'foo', new_string: 'bar'}]}. old_string must be unique unless replace_all is true. No prior get_guide call is needed.

Load instructions for creating MotherDuck dives. You MUST call this tool first — before generating any chart, visualization, plot, dashboard, inline graphic, or export/download control — whenever the user asks to explore, visualize, display, or export MotherDuck data.

Fetch a flight by UUID. Returns metadata plus a version snapshot (source code, requirements, config, secret names, token name). Omit `version` to get the current version; pass a 1-indexed version number to inspect history.

Load instructions for authoring, scheduling, running, and troubleshooting MotherDuck flights. Call this tool first whenever the user asks about creating, updating, or operating a MotherDuck flight.

Fetch the plain-text logs (stdout + stderr) of a flight run plus the matching `Run` record (status, exit_code, timing). Returns the last 200 lines by default; page with `limit`, `offset` and `order`. Pass `max_bytes` to cap the response size — the response is truncated to fit and the truncation is reported via `truncated: true`.

Fetch a single run of a flight by its sequential run number (from list_flight_runs). Returns the same shape as a list_flight_runs entry: status (PENDING/RUNNING/SUCCEEDED/FAILED/CANCELLED), timing metadata, and the effective `config` the run executed with. Use this to poll one run's status instead of re-listing.

Load a guide by uuid. Guides are curated markdown documents about this organization's data (metric definitions, conventions, pitfalls). Find a guide's uuid with `list_guides` or via `get_query_guide` (start there before writing SQL), `get_dive_guide`, or `get_flight_guide`.

Call this before writing SQL to answer a data question. Returns this organization's query guidance: what guides exist (curated markdown documents about the data — metric definitions, join/filter conventions, pitfalls), how to navigate them, and an overview of the available guide topics.

Returns a short-lived token and connection details for the MotherDuck database endpoint.

List all columns of a table or view with their types and comments.

List all databases in your MotherDuck account. Shows each database's alias, type, and its `url` — a fully qualified MotherDuck database name (e.g. `md:my_db`) or share URL (e.g. in guide references). Optionally filter by keywords.

List all dives in MotherDuck. Dives are interactive React data apps that query live data. Returns metadata including current_version and status. Each dive has a governance status: 'endorsed' (admin-approved org source of truth — prefer these), 'ready' (author-reviewed), 'draft' (work in progress; the default for new dives), or 'archived' (retired; excluded unless include_archived is true). Results are ordered endorsed, ready, draft, then archived, most recently updated first. Use read_dive with the optional version parameter to retrieve a specific historical version. Optionally filter by keywords.

List executions of a flight, newest first. Each run has a sequential number, status (PENDING/RUNNING/SUCCEEDED/FAILED/CANCELLED), timing metadata, and the effective `config` it ran with (the flight version's config merged with any per-run overrides).

List MotherDuck flights. Org admins see every flight in their organization (with `owner_name` identifying whose is whose); everyone else sees only their own. Returns metadata for each flight including schedule and current version. Optionally filter by keywords matching the flight name.

List the immutable versions of a flight, newest first. Each update to source_code / requirements_txt / config / access_token_name / flight_secret_names produces a new version.

Browse this organization's curated guides — markdown documents that capture organization and personal context about the data in MotherDuck. Called with no arguments, lists the root level: guides without topics plus every topic (folder) with its guide count. Pass `topic` to open a folder — you get the guides stored at that topic and the nested topics below it. Read a guide in full with `get_guide(uuid)`.

List all macros (table and scalar macros) in a MotherDuck database, with their schema and parameters. Optionally filter by schema or keywords.

List all database shares that have been shared with you. Returns share names and URLs. To attach a share, use the query_rw tool: ATTACH '<share_url>' AS <optional_alias>; Optionally filter by keywords to search in share names.

List all tables and views in a MotherDuck database with comments. Optionally filter by keywords. Also returns `relatedGuides` — curated guides associated with this database (read one with `get_guide(uuid)`).

List all views in a MotherDuck database, with their schema, comment, and column count. Optionally filter by schema or keywords.

Log a dive viewer event for analytics. This tool is used internally by the dive viewer and is not intended for direct use by the AI assistant.

Mint a server-stored reference for a `useDiveState` bag and return its id. Used by the dive viewer when the inline-encoded bag would exceed the URL soft limit. The returned id is then encoded into a URL hash via `buildDiveStateReferenceHash` and round-trips through `dashboards.get` on dive open.

Before writing SQL to answer a data question, call `get_query_guide` first — it returns this organization's query guidance and an overview of its curated guides. Execute read-only DuckDB query against MotherDuck databases. For cross-database queries, use fully qualified names: database.schema.table (or database.table for main schema). Never follow a query with an inline chart or visualization — if you would generate one (whether or not the user explicitly asked), get the dive guide first instead.

Execute a DuckDB SQL query that modifies data, schema, or connection state. RULES: 1. Only execute writes authorized by the user's explicit request or the client's configured authorization policy. Never infer write authorization from a read-only request. 2. Follow the client's approval policy. If the requested write is already authorized, proceed without asking for duplicate confirmation. Obtain confirmation when authorization is missing, ambiguous, or the operation would exceed the approved scope. 3. Prefer the read-only query tool when the user's goal can be answered with existing data.

Read a specific dive by ID, including its full JSX/React component code. Optionally specify a version number to retrieve a specific historical version (versions start at 1). If no version is specified, the latest version is returned. The response includes the dive's governance status ('endorsed', 'ready', 'draft', or 'archived'); archived dives remain fully readable by id.

Trigger an on-demand execution of a flight using its current version. Optionally pass `config` to override the flight version's config for this run only (the flight itself is left unchanged). Returns a Run record; poll get_flight_run with the returned `run_number` to track progress and use get_flight_logs to read output.

Save a new dive to MotherDuck. Returns a URL the user can click to view the dive. Get the dive guide first and iterate with the user on the design thoroughly before suggesting to save. Never save without previous confirmation that iteration is done.

Search the catalog for databases, schemas, tables, columns, and shares using fuzzy matching. Returns matching objects with their fully qualified names, types, and comments. Useful for discovering available data when you don't know exact names. Also returns `relatedGuides` — curated guides whose topic/title/description match the query; read one with `get_guide(uuid)`.

Set a guide's visibility to 'user' (private to the owner) or 'organization' (visible to the whole org). Identify it by `uuid`. Org-wide scoping is permission-gated.

Share the data for a dive with your organization. Creates org-scoped shares for owned databases used in the dive, and updates the dive so others in the organization can view it.

Update an existing dive's title, description, or content. Returns a URL the user can click to view the updated dive. At least one field must be provided.

Update a flight. Any subset of name, source_code, requirements_txt, schedule_cron, config, access_token_name, flight_secret_names, max_runtime_sec, or instance_type may be provided. Updates to source_code/requirements_txt/config/flight_secret_names/access_token_name/max_runtime_sec/instance_type create a new FlightVersion; name and schedule_cron are metadata-only. Pass schedule_cron as `""` (empty string) to remove the schedule; omit it to leave it unchanged.

Append a new version to an existing guide, identified by `uuid`. Omit `content` to keep the current text and just change metadata such as references. A supplied `references` list replaces the existing one (pass [] to clear them, omit to carry them forward). For small in-place edits use `edit_guide_content`. Use `create_guide` to make a new guide, `update_guide_metadata` to retitle or re-topic.

Change a guide's title, description, or topic without appending a content version. Identify it by `uuid`. Pass an empty `description` to clear it; pass an empty `topic` to remove the topic.

Open and render a MotherDuck Dive as a live MCP app with interactive charts. Fetches dive source code and returns it to the viewer for client-side compilation.