Get the latest version of a Ruby gem.
AI agents call get_ruby_gem to retrieve information from Versionator without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query against a package registry to fetch version and metadata information about a Ruby gem. There are no side effects, no modifications to data, no code execution, and no financial implications. The operation is equivalent to searching or fetching data from a public package repository.
From the tool's definition Tool name 'get_ruby_gem' and description 'Get the latest version of a Ruby gem' indicate a query operation that retrieves metadata about package versions. The server is explicitly described as one that 'queries 19 package registries...
Attacks that exploit this kind of access
Get the latest version of a Ruby gem. It is categorised as a Read tool in the Versionator MCP Server, which means it retrieves data without modifying state.
Register the Versionator MCP server in PolicyLayer and add a rule for get_ruby_gem: 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 Versionator. Nothing to install.
get_ruby_gem 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_ruby_gem 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_ruby_gem. 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_ruby_gem is provided by the Versionator MCP server (trianglegrrl/versionator-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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