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Connect Snowflake to Claude Cowork

Give Claude Cowork governed access to Snowflake’s 8 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Claude Cowork setup guide

Set up

Add Snowflake to Claude Cowork in four steps

Admins approve the server once. Everyone in Claude Cowork then gets it through the same governed connection.

  1. 1

    Approve Snowflake in Runlayer

    Add Snowflake from the catalog and choose who can use it and which of its tools are allowed.

  2. 2

    Connect Claude Cowork to Runlayer

    Claude Cowork gets connector tools through the Runlayer Plugin. With direct tool listing turned on for your deployment, Snowflake’s 8 tools show up in Claude Cowork’s own tool list.

    Claude Cowork setup guide
  3. 3

    Sign in to Snowflake

    Each user signs in to Snowflake with OAuth. Runlayer keeps the tokens out of the client’s configuration.

  4. 4

    Use Snowflake from Claude Cowork

    Snowflake’s approved tools appear in Claude Cowork. Every call is checked against policy and recorded.

Tools

8 Snowflake tools in Claude Cowork

Runlayer policy decides which of these Claude Cowork users can call.

  • Describe semantic view

    Describe a semantic view.

  • Get semantic view ddl

    Get the DDL for a semantic view.

  • List semantic views

    List all semantic views in the account, database, or schema.

  • Query semantic view

    Writes and runs a statement to query a semantic view using DIMENSIONS, METRICS, and/or FACTS.

  • Run Snowflake query

    Run a SQL query in Snowflake.

  • Show semantic dimensions

    Show all semantic dimensions in the account, database, or schema.

  • Show semantic metrics

    Show all semantic metrics in the account, database, or schema.

  • Write semantic view query tool

    Writes a query statement to query a semantic view using DIMENSIONS, METRICS, and/or FACTS.

Control

What Runlayer can see and stop in Claude Cowork

Some controls apply to every client at the gateway. Others depend on what Claude Cowork exposes to Runlayer.

  • Gateway policy (available)

    Every Snowflake call from Claude Cowork passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, Claude Cowork as the client, the tool, and the policy and scanner decisions.

  • Anthropic inference hooks (available)

    Anthropic Inference hooks let Runlayer check Claude Cowork prompts before inference.

  • OTLP telemetry (available)

    Claude Cowork can send supported OpenTelemetry events to Runlayer for observe-only session visibility.

  • Stop a call before it runs (available)

    Runlayer can reject a Claude Cowork prompt before Anthropic runs it, which stops the whole request rather than one tool call.

  • Block output after it runs (available)

    Because Runlayer checks the full prompt, tool results in it can be blocked before the model sees them.

  • Redact output in place (not available)

    Runlayer cannot mask content in Claude Cowork. The gateway still applies policy to the call.

In Claude Cowork

  • Cowork session data sent over OpenTelemetry is for monitoring only and cannot stop anything.

Frequently asked questions

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