Retrieves multiple space roles for a given space.
AI agents call fetch_space_roles to retrieve information from Storyblok MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves data about role configurations within a Storyblok space. It does not create, modify, delete, execute code, or move money. The blast radius of misuse is minimal—an attacker could enumerate role definitions but cannot escalate privileges or alter access controls through this retrieval alone. Hence it is classified as Read with low severity.
From the tool's definition The tool 'fetch_space_roles' has a description stating 'Retrieves multiple space roles for a given space.' The verb 'Retrieves' and the context of querying roles (not modifying them) clearly indicate a read-only operation with no side effects.
Documented attack patterns abuse exactly the kind of access fetch_space_roles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Storyblok MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for fetch_space_roles:
{
"version": "1",
"default": "deny",
"tools": {
"fetch_space_roles": {}
}
}fetch_space_roles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieves multiple space roles for a given space. It is categorised as a Read tool in the Storyblok MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Storyblok MCP Server MCP server in PolicyLayer and add a rule for fetch_space_roles: 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 Storyblok MCP Server. Nothing to install.
fetch_space_roles 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 fetch_space_roles 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 fetch_space_roles. 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.
fetch_space_roles is provided by the Storyblok MCP Server MCP server (kiran1689/storyblok-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Storyblok MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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159 Storyblok MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.