createDatabase · CouchDB MCP Server MCP: Risk & Policy

WHAT IT DOES

What createDatabase does on CouchDB MCP Server

AI agents use createDatabase to create or update resources in CouchDB MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CouchDB MCP Server environment.

WHY IT NEEDS A POLICY

Why createDatabase needs a policy

Creating a database is a reversible write operation. While it consumes resources and can affect system state, the action is not destructive (databases can be deleted) and doesn't involve irreversible data loss or financial transactions.

From the tool's definition Tool name 'createDatabase' and description 'Create a new CouchDB database' indicate data creation without deletion or financial impact.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

createDatabase Rate-limited

createDatabase 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": {
    "createDatabase": {
      "limits": [
        {
          "counter": "createdatabase_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 CouchDB MCP Server, so you can run agents against it safely.

FAQ

Questions about createDatabase

What does the createDatabase tool do? +

Create a new CouchDB database. It is categorised as a Write tool in the CouchDB MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on createDatabase? +

Register the CouchDB MCP Server MCP server in PolicyLayer and add a rule for createDatabase: 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 CouchDB MCP Server. Nothing to install.

What risk level is createDatabase? +

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

Can I rate-limit createDatabase? +

Yes. Add a rate_limit block to the createDatabase 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 createDatabase completely? +

Set action: deny in the PolicyLayer policy for createDatabase. 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 createDatabase? +

createDatabase is provided by the CouchDB MCP Server MCP server (robertoamoreno/couchdb-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.