patchUserConsentWithId
Updates, via PATCH, a single User consent by Id.
This record as markdown: /tools/io-fusionauth-mcp-api/patchuserconsentwithid.md
What patchUserConsentWithId does on Fusionauth
AI agents use patchUserConsentWithId 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.
Why patchUserConsentWithId is rated Medium
The PATCH operation modifies user consent settings in a reversible manner. This is a Write action, not Destructive (consent can be changed again), not Read (creates side effects), and not Execute (doesn't run arbitrary code).
From the tool's definition Tool name explicitly uses 'patch' and description states 'Updates, via PATCH, a single User consent by Id' — this is a reversible modification operation on user consent data.
Attacks that exploit this kind of access
The rule that runs patchUserConsentWithId 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 patchUserConsentWithId, this is the rule to start with:
patchUserConsentWithId 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every patchUserConsentWithId call is checked against it from then on.
Questions about patchUserConsentWithId
Updates, via PATCH, a single User consent by 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.
Register the Fusionauth MCP server in PolicyLayer and add a rule for patchUserConsentWithId: 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.
patchUserConsentWithId is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the patchUserConsentWithId 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 patchUserConsentWithId. 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.
patchUserConsentWithId 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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