create_knowledge_database · Metis Public Health MCP

WHAT IT DOES

What create_knowledge_database does on Metis Public Health

AI agents use create_knowledge_database to create or update resources in Metis Public Health — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Metis Public Health environment.

WHY IT NEEDS A POLICY

Why create_knowledge_database needs a policy

The verb 'create' combined with 'knowledge_database' suggests this tool creates or initializes a new data structure. This is a Write action (reversible modification of data). Severity is medium because database creation could consume resources or overwrite existing schemas, but lacks the destructive finality of deletion or the blast radius of Execute/code-execution.

From the tool's definition Tool name 'create_knowledge_database' indicates creation of a database artifact. Description is empty, limiting specificity.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_knowledge_database Rate-limited

create_knowledge_database stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_knowledge_database": {
      "limits": [
        {
          "counter": "create_knowledge_database_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Metis Public Health, so you can run agents against it safely.

FAQ

Questions about create_knowledge_database

What does the create_knowledge_database tool do? +

create_knowledge_database. It is categorised as a Write tool in the Metis Public Health MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_knowledge_database? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for create_knowledge_database: 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 Metis Public Health. Nothing to install.

What risk level is create_knowledge_database? +

create_knowledge_database is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_knowledge_database? +

Yes. Add a rate_limit block to the create_knowledge_database 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.

How do I block create_knowledge_database completely? +

Set action: deny in the PolicyLayer policy for create_knowledge_database. 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.

What MCP server provides create_knowledge_database? +

create_knowledge_database is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.