Compare a document snapshot against the current state or another snapshot.
AI agents call refmd-get-snapshot-diff to retrieve information from RefMD 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 compares snapshot data to surface differences. It is a read-only query operation that does not create, modify, delete, or execute any actions. The blast radius of misuse is minimal: an attacker could learn about document history or differences, but cannot alter state or trigger side effects. Confidence is high because the description is clear and unambiguous.
From the tool's definition Tool description states it 'Compare[s] a document snapshot against the current state or another snapshot' — a pure comparison/query operation with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Compare a document snapshot against the current state or another snapshot. It is categorised as a Read tool in the RefMD MCP Server MCP Server, which means it retrieves data without modifying state.
Register the RefMD MCP Server MCP server in PolicyLayer and add a rule for refmd-get-snapshot-diff: 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 RefMD MCP Server. Nothing to install.
refmd-get-snapshot-diff 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 refmd-get-snapshot-diff 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 refmd-get-snapshot-diff. 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.
refmd-get-snapshot-diff is provided by the RefMD MCP Server MCP server (refmdio/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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