patchUserActionWithId

Updates, via PATCH, the user action with the given Id.

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/patchuseractionwithid.md

WHAT IT DOES

What patchUserActionWithId does on Fusionauth

AI agents use patchUserActionWithId 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 patchUserActionWithId is rated Medium

PATCH operations modify data reversibly without deletion. User actions are security-related objects in FusionAuth, making unauthorized updates a moderate concern. This is Write rather than Execute because it modifies specific objects rather than running arbitrary code/commands. Not Destructive since PATCH is not a permanent deletion.

From the tool's definition Tool description states 'Updates, via PATCH, the user action with the given Id' - indicating reversible modification of existing data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs patchUserActionWithId 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 patchUserActionWithId, this is the rule to start with:

patchUserActionWithId Rate-limited

patchUserActionWithId 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": {
    "patchUserActionWithId": {
      "limits": [
        {
          "counter": "patchuseractionwithid_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 patchUserActionWithId call is checked against it from then on.

FAQ

Questions about patchUserActionWithId

What does the patchUserActionWithId tool do? +

Updates, via PATCH, the user action with the given Id. 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 patchUserActionWithId? +

Register the Fusionauth MCP server in PolicyLayer and add a rule for patchUserActionWithId: 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 patchUserActionWithId? +

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

Can I rate-limit patchUserActionWithId? +

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

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

patchUserActionWithId 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.

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