snow_acl_explain

SERVERSerac SOURCEserac-labs/serac

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/serac/snow-acl-explain.md

WHAT IT DOES

What snow_acl_explain does on Serac

AI agents use snow_acl_explain to create or update resources in Serac, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Serac environment.

RISK

Why snow_acl_explain is rated Medium

An AI agent can call snow_acl_explain faster than any human can review: one bad instruction and it creates or modifies resources in Serac by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs snow_acl_explain safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Serac, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For snow_acl_explain, this is the rule to start with:

snow_acl_explain Rate-limited

snow_acl_explain stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "snow_acl_explain": {
      "limits": [
        {
          "counter": "snow_acl_explain_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Serac, apply this rule, and every snow_acl_explain call is checked against it from then on.

FAQ

Questions about snow_acl_explain

What does the snow_acl_explain tool do? +

Explain which ACLs apply to a table (optionally one field) for one operation, and what a named user is missing. Walks sys_db_object.super_class so parent-table rules are included, covers the wildcard names (*, *.field, table.*, *.*), resolves each rule. It is categorised as a Write tool in the Serac MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on snow_acl_explain? +

Register the Serac MCP server in PolicyLayer and add a rule for snow_acl_explain: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Serac. Nothing to install.

What risk level is snow_acl_explain? +

snow_acl_explain is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit snow_acl_explain? +

Yes. Add a rate_limit block to the snow_acl_explain rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block snow_acl_explain completely? +

Set action: deny in the PolicyLayer policy for snow_acl_explain. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides snow_acl_explain? +

snow_acl_explain is provided by the Serac MCP server (serac-labs/serac). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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