validate
Validates Terraform configuration files for syntax and consistency errors. Returns structured diagnostics.
This record as markdown: /tools/io-github-dave-london-cargo/validate.md
What validate does on Cargo
AI agents call validate to retrieve information from Cargo without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why validate is rated Low
Validation is a read-only operation that analyzes configuration files for issues without creating, modifying, deleting, or executing anything. The tool performs static analysis and returns diagnostic information. This presents minimal risk even if misused by an AI agent, as it cannot cause side effects beyond reading and analyzing files.
From the tool's definition Tool validates Terraform configuration files and returns diagnostics. The description indicates inspection/analysis without modifying files ('syntax and consistency errors', 'structured diagnostics'). The verb 'validate' is a read operation.
Attacks that exploit this kind of access
The rule that runs validate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cargo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For validate, this is the rule to start with:
validate is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Cargo, apply this rule, and every validate call is checked against it from then on.
Questions about validate
Validates Terraform configuration files for syntax and consistency errors. Returns structured diagnostics. It is categorised as a Read tool in the Cargo MCP Server, which means it retrieves data without modifying state.
Register the Cargo MCP server in PolicyLayer and add a rule for validate: 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 Cargo. Nothing to install.
validate 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 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. 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 is provided by the Cargo MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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