motherduckdb
Registry indexed
motherduck-connect
Set up or troubleshoot MotherDuck connections, authentication, client runtimes, and read scaling.
Overview
Set up or troubleshoot MotherDuck connections, authentication, client runtimes, and read scaling.
Read full documentation
Source documentation, not instructions for this website. Review permissions before running any commands.
Connect to MotherDuck
Source Of Truth
- Prefer current MotherDuck connection, attach-mode, read-scaling, and multithreading docs.
- If the MotherDuck MCP
ask_docs_questiontool is available, use it first for current connection behavior. - When it is unavailable, verify guidance against the public docs before making firm claims about connection strings, token types, or read-scaling behavior.
Default Posture
- Start with the PG endpoint (MotherDuck's Postgres-compatible endpoint) for backend applications, BI tools, and serverless runtimes that want PostgreSQL wire compatibility.
- For BI tools, treat the PG endpoint as the compatibility path for Power BI and Tableau Cloud when current docs list them as supported.
- Use the native DuckDB API when you need local files, hybrid local/cloud execution, or direct DuckDB control.
- Use
md:workspace connections for multi-database exploration, bootstrap flows, and temporary validation environments. - Reuse an existing connection, connector, or environment-managed token when the user's context already provides one; do not ask for secrets that can be discovered from the active workspace.
- Start with one connection. Add pooling or read scaling only when real concurrent-read pressure exists.
- Use native DuckDB
custom_user_agentwhere supported; for PG endpoint clients, prefer the client'sapplication_namesetting when available.
Runtime Selection
Pick the connection method (above) and the runtime separately. The runtime is what actually executes queries: MotherDuck MCP, the MotherDuck CLI, a Python or Node process, or the DuckDB CLI.
For answer, review, or planning requests, inspect the available runtimes and recommend a path without installing anything. Install or configure a runtime only when the user asks to connect, build, or change the application.
Reuse the project’s language, dependencies, and working connection. Prefer MCP for chat-only exploration and the MotherDuck CLI for file-shaped Dive/Flight work or large output. For application code, use its existing runtime; choose a new runtime only when none is established.
Before installing a DuckDB client, check https://motherduck.com/docs/duckdb-versions.json and pin a MotherDuck-supported version. Keep an existing compatible pin unless the task requires an upgrade. See the runtime reference for installation examples.
Workflow
- Choose the connection path for the workload; keep ingestion and serving paths distinct when their needs differ.
- Put the MotherDuck token in environment-managed secrets, not in source code.
- Establish the connection with explicit SSL settings where required.
- Verify the connection with
SELECT 1 AS connectedand then list reachable tables. - If the workload is read-heavy and concurrent, evaluate read scaling and
session_hint.
References
Read only the reference sections needed for the current task.
- Read
references/CONNECTION_GUIDE.mdfor connection-method selection, PG endpoint and native DuckDB examples, token handling, read scaling, attach modes, and common failure modes - Read
references/RUNTIME_SELECTION.mdfor the MCP-vs-Python-vs-Node-vs-CLI decision tree, detection commands, install snippets, and the DuckDB version-pinning workflow
Related Skills
Load related skills only for missing capabilities; reuse established context.
motherduck-explorefor discovering databases, tables, columns, and shares after the connection is establishedmotherduck-queryfor executing DuckDB SQL against the connected databasesmotherduck-duckdb-sqlfor DuckDB syntax and function lookup supportmotherduck-rest-apifor control-plane admin operations; those useMOTHERDUCK_ADMIN_TOKEN, which is never used for database connectionsmotherduck-clifor terminal queries and file-oriented Dive/Flight authoring
File metadata
name: motherduck-connect description: Set up or troubleshoot MotherDuck connections, authentication, client runtimes, and read scaling. argument-hint: [app-or-runtime] license: MIT
View original text
--- name: motherduck-connect description: Set up or troubleshoot MotherDuck connections, authentication, client runtimes, and read scaling. argument-hint: [app-or-runtime] license: MIT --- # Connect to MotherDuck ## Source Of Truth - Prefer current MotherDuck connection, attach-mode, read-scaling, and multithreading docs. - If the MotherDuck MCP `ask_docs_question` tool is available, use it first for current connection behavior. - When it is unavailable, verify guidance against the public docs before making firm claims about connection strings, token types, or read-scaling behavior. ## Default Posture - Start with the PG endpoint (MotherDuck's Postgres-compatible endpoint) for backend applications, BI tools, and serverless runtimes that want PostgreSQL wire compatibility. - For BI tools, treat the PG endpoint as the compatibility path for Power BI and Tableau Cloud when current docs list them as supported. - Use the native DuckDB API when you need local files, hybrid local/cloud execution, or direct DuckDB control. - Use `md:` workspace connections for multi-database exploration, bootstrap flows, and temporary validation environments. - Reuse an existing connection, connector, or environment-managed token when the user's context already provides one; do not ask for secrets that can be discovered from the active workspace. - Start with one connection. Add pooling or read scaling only when real concurrent-read pressure exists. - Use native DuckDB `custom_user_agent` where supported; for PG endpoint clients, prefer the client's `application_name` setting when available. ## Runtime Selection Pick the connection method (above) and the runtime separately. The runtime is what actually executes queries: MotherDuck MCP, the MotherDuck CLI, a Python or Node process, or the DuckDB CLI. For answer, review, or planning requests, inspect the available runtimes and recommend a path without installing anything. Install or configure a runtime only when the user asks to connect, build, or change the application. Reuse the project’s language, dependencies, and working connection. Prefer MCP for chat-only exploration and the MotherDuck CLI for file-shaped Dive/Flight work or large output. For application code, use its existing runtime; choose a new runtime only when none is established. Before installing a DuckDB client, check `https://motherduck.com/docs/duckdb-versions.json` and pin a MotherDuck-supported version. Keep an existing compatible pin unless the task requires an upgrade. See the runtime reference for installation examples. ## Workflow 1. Choose the connection path for the workload; keep ingestion and serving paths distinct when their needs differ. 2. Put the MotherDuck token in environment-managed secrets, not in source code. 3. Establish the connection with explicit SSL settings where required. 4. Verify the connection with `SELECT 1 AS connected` and then list reachable tables. 5. If the workload is read-heavy and concurrent, evaluate read scaling and `session_hint`. ## References Read only the reference sections needed for the current task. - Read `references/CONNECTION_GUIDE.md` for connection-method selection, PG endpoint and native DuckDB examples, token handling, read scaling, attach modes, and common failure modes - Read `references/RUNTIME_SELECTION.md` for the MCP-vs-Python-vs-Node-vs-CLI decision tree, detection commands, install snippets, and the DuckDB version-pinning workflow ## Related Skills Load related skills only for missing capabilities; reuse established context. - `motherduck-explore` for discovering databases, tables, columns, and shares after the connection is established - `motherduck-query` for executing DuckDB SQL against the connected databases - `motherduck-duckdb-sql` for DuckDB syntax and function lookup support - `motherduck-rest-api` for control-plane admin operations; those use `MOTHERDUCK_ADMIN_TOKEN`, which is never used for database connections - `motherduck-cli` for terminal queries and file-oriented Dive/Flight authoring
Review the source
Price & running costs
- Get the skill
- Price unconfirmed
- Run it
- Requirements have not been confirmed. Check the source for agent, API and service charges.
- License
- MIT
- Price unconfirmed
- We have not confirmed a price for this skill. Existing source and install links remain available.
Free to get does not mean free to run. Price labels are not safety ratings. Submit pricing information →
Source needs review
The tracked source changed or could not be synchronized. Review the current source before installing.
Review before install: Avoid automatic install
License: MIT
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The submitted reference excerpt appears truncated at 'Brows', so the full CONNECTION_GUIDE.md should be verified for completeness before relying on it.
- SKILL.md does not explicitly define non-goals or unsafe operating boundaries, such as commands or actions the agent should never perform without user confirmation.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- GitHub adoption: 56 GitHub stars
- Stars/forks activity: 56 stars, 3 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Start with one small task
- 1Read the source. Confirm the input, expected output, dependencies and permissions.
- 2Ask your agent for a plan. Approve setup and any costs before running a small isolated test.
- 3Check the output and changed files. Report only what actually ran; keep the source revision for reproduction.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Source & usage notes
Indexed
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
- Source repository
- motherduckdb/agent-skills
- License
- MIT
- Version
- 1.0.0
- Last GitHub push
- Sep 6, 2026
- Registry updated
- Sep 8, 2026
Version reported in registry metadata; check source releases before relying on it.
Quality
64/100
Promising
Trust
54/100
Do not auto-install
Audit
72/100
Needs review
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The submitted reference excerpt appears truncated at 'Brows', so the full CONNECTION_GUIDE.md should be verified for completeness before relying on it.
- SKILL.md does not explicitly define non-goals or unsafe operating boundaries, such as commands or actions the agent should never perform without user confirmation.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- GitHub adoption: 56 GitHub stars
- Stars/forks activity: 56 stars, 3 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
- Verified installs
- —
- Outcomes
- —
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.
Agent access
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
More details
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}For the creator
Listing source
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- Creator
- motherduckdb
- Indexed by
- OpenAgentSkill community index
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