Get Terragrunt HCL block documentation with syntax and examples. Blocks: remote_state, dependency, dependencies, generate, terraform, inputs, include, locals.
AI agents call get_hcl_config_reference to retrieve information from Terragrunt MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation by returning documentation about HCL block syntax and examples. It has no capability to execute commands, modify configurations, delete resources, or cause any side effects. The retrieval of reference documentation is a classic Read category operation with minimal blast radius.
From the tool's definition Tool description states 'Get Terragrunt HCL block documentation with syntax and examples' — it retrieves and provides reference documentation without modifying any infrastructure or configuration state.
Attacks that exploit this kind of access
Get Terragrunt HCL block documentation with syntax and examples. Blocks: remote_state, dependency, dependencies, generate, terraform, inputs, include, locals. It is categorised as a Read tool in the Terragrunt MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Terragrunt MCP Server MCP server in PolicyLayer and add a rule for get_hcl_config_reference: 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 Terragrunt MCP Server. Nothing to install.
get_hcl_config_reference 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 get_hcl_config_reference 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 get_hcl_config_reference. 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.
get_hcl_config_reference is provided by the Terragrunt MCP Server MCP server (omattsson/terragrunt-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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