AI agents call check_status to retrieve information from ProofSlip without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query operation to check the status of a proof receipt object. It retrieves state information without creating, modifying, deleting, or executing external code. The description explicitly limits output to status and a terminal flag, indicating purely informational retrieval. This is characteristic of Read category tools.
From the tool's definition Tool returns status and terminal flag only—described as a 'lightweight status poll' with no side effects or data modification. Polling loops are read-only operations that retrieve state information.
Attacks that exploit this kind of access
Lightweight status poll. Returns only status and terminal flag — use for polling loops. It is categorised as a Read tool in the ProofSlip MCP Server, which means it retrieves data without modifying state.
Register the ProofSlip MCP server in PolicyLayer and add a rule for check_status: 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 ProofSlip. Nothing to install.
check_status 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 check_status 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 check_status. 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.
check_status is provided by the ProofSlip MCP server (@proofslip/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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