get_cartesi_jsonrpc_api_reference
AI agents call get_cartesi_jsonrpc_api_reference 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 JSON-RPC API reference documentation for Cartesi. Despite the empty description, the name pattern, server context (read-only knowledge access), and sibling tool patterns indicate it queries and returns reference materials without modifying data or executing operations. The blast radius of misuse is minimal—an agent could only waste tokens or receive irrelevant API documentation.
From the tool's definition Tool name includes 'get_' and 'reference', consistent with retrieval operations. Server description explicitly states 'provides read-only knowledge access' and 'query curated Cartesi developer resources, documentation'.
Attacks that exploit this kind of access
get_cartesi_jsonrpc_api_reference. 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 get_cartesi_jsonrpc_api_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 Cartesi Knowledge MCP Server. Nothing to install.
get_cartesi_jsonrpc_api_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_cartesi_jsonrpc_api_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_cartesi_jsonrpc_api_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_cartesi_jsonrpc_api_reference 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.
Teams ship this data inside their own products. See what a licence covers →