This query retrieves all entity types in the RDF graph, along with their labels and comments if available.
AI agents call podbc_sparql_get_entity_types_detailed to retrieve information from Mcp Sqlalchemy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query operation that fetches metadata (entity types, labels, comments) from an RDF graph without modifying, deleting, or executing arbitrary operations. The blast radius is minimal—an agent misusing this tool can only read schema/metadata information, which poses low risk. It aligns with the Read category (retrieve/query data with no side effects).
From the tool's definition Tool description states it 'retrieves' entity types with labels and comments from an RDF graph. The verb 'retrieves' and the read-only nature of querying metadata from a graph indicate no data modification occurs.
Documented attack patterns abuse exactly the kind of access podbc_sparql_get_entity_types_detailed gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Sqlalchemy, and nothing reaches the server without passing your rules. This is the rule we recommend for podbc_sparql_get_entity_types_detailed:
{
"version": "1",
"default": "deny",
"tools": {
"podbc_sparql_get_entity_types_detailed": {}
}
} podbc_sparql_get_entity_types_detailed is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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This query retrieves all entity types in the RDF graph, along with their labels and comments if available. It is categorised as a Read tool in the Mcp Sqlalchemy MCP Server, which means it retrieves data without modifying state.
Register the Mcp Sqlalchemy MCP server in PolicyLayer and add a rule for podbc_sparql_get_entity_types_detailed: 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 Mcp Sqlalchemy. Nothing to install.
podbc_sparql_get_entity_types_detailed 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 podbc_sparql_get_entity_types_detailed 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 podbc_sparql_get_entity_types_detailed. 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.
podbc_sparql_get_entity_types_detailed is provided by the Mcp Sqlalchemy MCP server (openlinksoftware/mcp-sqlalchemy-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Sqlalchemy, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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14 Mcp Sqlalchemy tools catalogued and risk-classified — across an index of 43,000+ MCP servers.