createAPIKeyWithId

SERVERFusionauth SOURCE@fusionauth/mcp-api

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-fusionauth-mcp-api/createapikeywithid.md

WHAT IT DOES

What createAPIKeyWithId does on Fusionauth

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

RISK

Why createAPIKeyWithId is rated Medium

The tool creates a new API key, which is a write operation that modifies system state by introducing new authentication credentials. While credential creation is reversible (keys can be deleted), the severity is elevated to 'high' because API keys grant access permissions and their creation can expand system access if misused by an agent.

From the tool's definition Tool description states 'Creates an API key' - this is a create operation that generates credentials with security implications.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs createAPIKeyWithId safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Fusionauth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For createAPIKeyWithId, this is the rule to start with:

createAPIKeyWithId Rate-limited

createAPIKeyWithId 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": {
    "createAPIKeyWithId": {
      "limits": [
        {
          "counter": "createapikeywithid_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every createAPIKeyWithId call is checked against it from then on.

FAQ

Questions about createAPIKeyWithId

What does the createAPIKeyWithId tool do? +

Creates an API key. You can optionally specify a unique Id for the key, if not provided one will be generated. an API key can only be created with equal or lesser authority. An API key cannot create another API key unless it is granted to that API key. If an API key is locked to a tenant, it can only create API Keys for that same tenant. It is categorised as a Write tool in the Fusionauth MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on createAPIKeyWithId? +

Register the Fusionauth MCP server in PolicyLayer and add a rule for createAPIKeyWithId: 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 Fusionauth. Nothing to install.

What risk level is createAPIKeyWithId? +

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

Can I rate-limit createAPIKeyWithId? +

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

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

createAPIKeyWithId is provided by the Fusionauth MCP server (@fusionauth/mcp-api). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Fusionauth, and thousands of servers like it.

This server

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The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →