AI agents call show-indexes to retrieve information from Ravendb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about database indexes—a read-only operation with no side effects. It falls squarely into the Read category. The severity is low because listing indexes exposes only schema metadata that does not directly compromise data confidentiality (index names are typically discoverable) and has no destructive or execute implications.
From the tool's definition Tool name 'show-indexes' and description 'List available indexes in the current database' indicate a query/list operation with no data modification or execution of arbitrary code.
Attacks that exploit this kind of access
List available indexes in the current database. It is categorised as a Read tool in the Ravendb MCP Server, which means it retrieves data without modifying state.
Register the Ravendb MCP server in PolicyLayer and add a rule for show-indexes: 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 Ravendb. Nothing to install.
show-indexes 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 show-indexes 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 show-indexes. 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.
show-indexes is provided by the Ravendb MCP server (johnib/ravendb-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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