List version history for a document. Each version has a content hash, word count, reading time, and timestamp.
AI agents call get_document_versions to retrieve information from Lightpaper Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical metadata about document versions without making any changes to data. It is a pure query operation that returns information about existing versions. No creation, modification, deletion, or execution occurs. The low severity reflects minimal risk—exposing version history is unlikely to cause significant harm in an API-first publishing platform context.
From the tool's definition get_document_versions lists version history with metadata (content hash, word count, reading time, timestamp). The verb 'list' and retrieval-only nature with no modification of data indicates a read operation.
Attacks that exploit this kind of access
List version history for a document. Each version has a content hash, word count, reading time, and timestamp. It is categorised as a Read tool in the Lightpaper Mcp MCP Server, which means it retrieves data without modifying state.
Register the Lightpaper MCP server in PolicyLayer and add a rule for get_document_versions: 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 Lightpaper Mcp. Nothing to install.
get_document_versions 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_document_versions 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_document_versions. 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_document_versions is provided by the Lightpaper MCP server (pypi:lightpaper-mcp). 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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