Connect MotherDuck to Well
Materialise MotherDuck table row, database, and query into your workspace, queryable in conversation and through agents.
What Well pulls from MotherDuck
MotherDuck feeds table row, database, query into Well as a source. The connection is read-only; disconnect at any time from your workspace settings to revoke MotherDuck’s access.
| From MotherDuck | In Well | Relation | |
|---|---|---|---|
| Table row | Indexed record | Becomes | |
| Database | Workspace context | Groups under | |
| Query | Audit entry | Captures as |
- Sync mode
- MCP hybrid
- Refresh
- live + reconciliation reads
- Direction
- MotherDuck → Well
What Well does with your MotherDuck connection
Connect
Connect MotherDuck over OAuth (MCP DCR): Well registers a client through MotherDuck's OAuth Dynamic Client Registration and you approve on MotherDuck's side, so the password never reaches Well; Well holds only a scoped token it can refresh.
Sync
Well brings table row, database, and query in from MotherDuck on live events backed by periodic reconciliation reads. The first sync backfills history in the background and the connection stays live after.
Enrich
Well resolves each MotherDuck entity into indexed record, workspace context, and audit entry, assigns categories, and links every record to an audit trail across the rest of your connected tools.
Available
Your data from MotherDuck lands in the workspace as indexed record, workspace context, and audit entry you can search, chart, and automate.
Questions MotherDuck unlocks
Ask in plain language. Well answers from your connected MotherDuck connection, resolved against the rest of your stack.
Ask anything about your MotherDuck connection
Ask about your MotherDuck connection…
Connect MotherDuck in three steps
- 01
Authorise MotherDuck via MCP
From Well's Connections panel, search for MotherDuck and click Connect. Well discovers MotherDuck's MCP OAuth metadata from its .well-known endpoint, registers a client via Dynamic Client Registration, and routes you through the authorize prompt on MotherDuck's side. No client credentials to paste.
- AuthOAuth (MCP DCR)
- DiscoveryMCP .well-known
- MCP serverapi.motherduck.com/mcp
- 02
Map your entities
Well's MCP client discovers table row, database, and query from MotherDuck that MotherDuck's MCP server exposes and brings them into your workspace using the canonical mappings defined in Well's data-views layer. You can inspect the workspace data model from Settings > Data Model.
- Mappingpreconfigured by Well
- 03
Use the data
Ask questions in conversation, build records tables, or let agents act on MotherDuck records. Because MotherDuck ships through MCP, Well treats every entity it exposes as queryable graph state alongside the rest of your connected tools.
- First syncstarts as soon as connect completes
MCP handshake typically completes under a minute on warm connections. Resource enumeration runs immediately after; full backfill of historical MotherDuck records happens in the background.
How MotherDuck stays secure with Well
Well connects to MotherDuck's MCP server (api.motherduck.com/mcp) via the Model Context Protocol. The MCP server itself handles credential issuance through OAuth Dynamic Client Registration; Well never sees a long-lived MotherDuck secret. Tokens are scoped to the table row, database, and query MotherDuck exposes and refreshed server-side. Reads only, Well cannot modify or delete MotherDuck records.
- granted
Read MotherDuck records
Resources the MotherDuck MCP server exposes, scoped by your OAuth approval.
- granted
Resolve table row, database, and query across your stack
Match identifiers in MotherDuck against the same entities your other connected tools expose, so each record carries cross-tool context.
- refused
Modify or delete MotherDuck records
Not granted; MotherDuck is read-only in Well. Write-back is opt-in per connector when a write surface exists.
- refused
Store MotherDuck passwords or session cookies
Authentication runs through OAuth (MCP DCR) tokens we never see.
Frequently asked questions about MotherDuck and Well
From Well, open Connections, find MotherDuck, and click Connect. Well discovers the OAuth metadata at api.motherduck.com/mcp/.well-known/oauth-authorization-server, registers a client on the fly via Dynamic Client Registration, and walks you through the authorize prompt on MotherDuck's side. No client_id or client_secret to paste; the handshake takes roughly a minute.
Well brings in table row, database, and query from MotherDuck and reshapes each entity into your workspace: table row becomes indexed record; database becomes workspace context. Every record arrives with the source identifier preserved, so MotherDuck stays the source of truth while Well lets you query the data alongside the rest of your stack.
On connect, Well reads MotherDuck's schema and proposes a column-to-entity mapping based on naming conventions and the workspace types Well already knows. You confirm or override the mapping once; subsequent syncs apply it. Column type changes in MotherDuck surface as a notice in your workspace settings.
Each MotherDuck table row is scored against the candidate indexed records in your workspace on identifier overlap, amount or quantity match, date proximity, and counterparty resolution. Matches above the auto-link confidence threshold flow through cleanly; below the threshold they queue for a one-click human review, with the most likely indexed record prefilled and the MotherDuck source attached.
Well combines live MotherDuck events with periodic reconciliation reads of table row, database, and query. New rows appear within seconds when MotherDuck pushes them; periodic reads catch anything a push missed. The first connect backfills history from MotherDuck in the background.
Open Connections > MotherDuck in Well and click Disconnect. Well calls MotherDuck's token revocation endpoint and stops calling MotherDuck immediately on its side; provider-side propagation to MotherDuck's admin panel varies by provider. The table row, database, and query Well already synced stay in your workspace by default; ask Support to purge them if your compliance flow requires it.
MotherDuck records are stored in the region Well operates for your workspace. Specific region details and the steps to change region are available from Support. See /privacy for the current data-handling policy.
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Ready to connect MotherDuck?
Connect once. Every table row, database, query from MotherDuck becomes searchable, queryable, and ready for your agents and tables. Disconnect any time.