Returns parsed FactoryBot factory definitions including attributes, traits, sequences, and associations. Use to understand what test data factories are available.
AI agents call get_factory_registry to retrieve information from Rails Insight without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries metadata about test data factory configurations. It has no side effects, does not execute code, does not modify data, and does not delete anything. It is informational only, examining the structure of FactoryBot definitions used in testing.
From the tool's definition Tool 'returns parsed FactoryBot factory definitions' with purpose to 'understand what test data factories are available' — a pure retrieval operation with no modification or execution capability.
Attacks that exploit this kind of access
Returns parsed FactoryBot factory definitions including attributes, traits, sequences, and associations. Use to understand what test data factories are available. It is categorised as a Read tool in the Rails Insight MCP Server, which means it retrieves data without modifying state.
Register the Rails Insight MCP server in PolicyLayer and add a rule for get_factory_registry: 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 Rails Insight. Nothing to install.
get_factory_registry 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_factory_registry 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_factory_registry. 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_factory_registry is provided by the Rails Insight MCP server (@reinteractive/rails-insight). 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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