AI agents call soql_query to retrieve information from Salesforce without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool executes SOQL queries but is explicitly described as read-only, meaning it retrieves data without side effects. However, SOQL queries can expose broad amounts of sensitive CRM data (contacts, deals, financials), giving it a medium severity rating due to potential data exfiltration risk even without write capabilities.
From the tool's definition "Execute a SOQL query against Salesforce (read-only)"
Documented attack patterns abuse exactly the kind of access soql_query gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Salesforce, and nothing reaches the server without passing your rules. This is the rule we recommend for soql_query:
{
"version": "1",
"default": "deny",
"tools": {
"soql_query": {}
}
}soql_query is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Execute a SOQL query against Salesforce (read-only). It is categorised as a Read tool in the Salesforce MCP Server, which means it retrieves data without modifying state.
Register the Salesforce MCP server in PolicyLayer and add a rule for soql_query: 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 Salesforce. Nothing to install.
soql_query is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the soql_query 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.
Set action: deny in the PolicyLayer policy for soql_query. 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.
soql_query is provided by the Salesforce MCP server (tomnagengast/mcp-server-salesforce). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Salesforce, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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9 Salesforce tools catalogued and risk-classified — across an index of 43,000+ MCP servers.