List all guardrails in Infracost Cloud. Requires INFRACOST_SERVICE_TOKEN environment variable.
AI agents call infracost_cloud_list_guardrails to retrieve information from Infracost MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns existing guardrail configurations without modifying, deleting, or executing any operations. It is a pure read operation that retrieves data from Infracost Cloud for informational purposes. The low severity reflects minimal blast radius if misused—an AI agent could only access information about cost guardrails, not alter them or cause financial impact.
From the tool's definition Tool name contains 'list' and description states 'List all guardrails in Infracost Cloud' — a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all guardrails in Infracost Cloud. Requires INFRACOST_SERVICE_TOKEN environment variable. It is categorised as a Read tool in the Infracost MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Infracost MCP Server MCP server in PolicyLayer and add a rule for infracost_cloud_list_guardrails: 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 Infracost MCP Server. Nothing to install.
infracost_cloud_list_guardrails 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 infracost_cloud_list_guardrails 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 infracost_cloud_list_guardrails. 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.
infracost_cloud_list_guardrails is provided by the Infracost MCP Server MCP server (phildougherty/infracost_mcp). 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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