AI agents call validate_syntax 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.
This tool performs static analysis on Apex code to check for syntax errors. It retrieves and inspects code without side effects, making it a Read operation. The severity is low because a syntax validation tool cannot modify data, execute arbitrary operations, or cause harm even if misused by an AI agent—it simply returns validation results.
From the tool's definition Tool name is 'validate_syntax' and description states 'Validate Apex class syntax'. Validation is a read-only operation that checks code structure without modifying, executing, or deleting data.
Documented attack patterns abuse exactly the kind of access validate_syntax 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 validate_syntax:
{
"version": "1",
"default": "deny",
"tools": {
"validate_syntax": {}
}
}validate_syntax is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Validate Apex class syntax. 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 validate_syntax: 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.
validate_syntax 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 validate_syntax 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 validate_syntax. 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.
validate_syntax is provided by the Salesforce MCP server (ryu-727/salesforce-mcp). 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.
Free to start. No card required.
25 Salesforce tools catalogued and risk-classified — across an index of 43,000+ MCP servers.