ALWAYS use this tool when asked about database tables, who reads/writes a table, or column-level impact. Returns all functions that read from or write to a DB table, with file paths and operation types. Do NOT search code manually for SQL queries — this tool has the complete picture from the know...
AI agents call nm_db_impact to retrieve information from NOMIK without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries the knowledge graph and returns information about database access patterns. It retrieves metadata about which functions interact with which tables — it does not modify any data, execute code, or perform destructive operations. The instruction 'Do NOT search code manually' confirms this is a read/query operation against a pre-built knowledge graph index.
From the tool's definition Returns all functions that read from or write to a DB table, with file paths and operation types
Documented attack patterns abuse exactly the kind of access nm_db_impact gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and NOMIK, and nothing reaches the server without passing your rules. This is the rule we recommend for nm_db_impact:
{
"version": "1",
"default": "deny",
"tools": {
"nm_db_impact": {}
}
}nm_db_impact is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
ALWAYS use this tool when asked about database tables, who reads/writes a table, or column-level impact. Returns all functions that read from or write to a DB table, with file paths and operation types. Do NOT search code manually for SQL queries — this tool has the complete picture from the knowledge graph. It is categorised as a Read tool in the NOMIK MCP Server, which means it retrieves data without modifying state.
Register the NOMIK MCP server in PolicyLayer and add a rule for nm_db_impact: 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 NOMIK. Nothing to install.
nm_db_impact 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 nm_db_impact 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 nm_db_impact. 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.
nm_db_impact is provided by the NOMIK MCP server (willfreed1/nomik). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from NOMIK, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
21 NOMIK tools catalogued and risk-classified — across an index of 43,000+ MCP servers.