List resources associated with a specific tag title.
AI agents call list_resources_for_tag to retrieve information from Cartesi Knowledge MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data (listing resources by tag) without creating, modifying, deleting, or executing any operations. It is a straightforward read operation on a knowledge base. The server is explicitly documented as providing 'read-only' access, and all sibling tools (fetch_, get_, list_, identify_) follow the same read pattern.
From the tool's definition Tool name 'list_resources_for_tag' and server description explicitly states 'read-only knowledge access' and 'query curated Cartesi developer resources'. The function lists/retrieves resources with no modification capability.
Attacks that exploit this kind of access
List resources associated with a specific tag title. It is categorised as a Read tool in the Cartesi Knowledge MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cartesi Knowledge MCP Server MCP server in PolicyLayer and add a rule for list_resources_for_tag: 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 Cartesi Knowledge MCP Server. Nothing to install.
list_resources_for_tag 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 list_resources_for_tag 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 list_resources_for_tag. 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.
list_resources_for_tag is provided by the Cartesi Knowledge MCP Server MCP server (mugen-builders/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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