update_mcp_server_user_access · Portkey Admin MCP

WHAT IT DOES

What update_mcp_server_user_access does on Portkey Admin

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

PARAMETERS

Parameter	Type	Required	Description
`id`	string	Yes	The MCP server ID or slug
`users`	array	Yes	Array of user access updates

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why update_mcp_server_user_access needs a policy

An AI agent can call update_mcp_server_user_access faster than any human can review — one bad instruction and it creates or modifies resources in Portkey Admin by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_mcp_server_user_access Rate-limited

update_mcp_server_user_access 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": {
    "update_mcp_server_user_access": {
      "limits": [
        {
          "counter": "update_mcp_server_user_access_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 Portkey Admin, so you can run agents against it safely.

FAQ

Questions about update_mcp_server_user_access

What does the update_mcp_server_user_access tool do? +

Grant or revoke individual user access to an MCP server. Changes take effect immediately and override the default access setting for the selected users; use list_mcp_server_user_access first if you need the current state. It is categorised as a Write tool in the Portkey Admin MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does update_mcp_server_user_access accept? +

update_mcp_server_user_access accepts 2 parameters: id, users. Required: id, users. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on update_mcp_server_user_access? +

Register the Portkey Admin MCP server in PolicyLayer and add a rule for update_mcp_server_user_access: 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 Portkey Admin. Nothing to install.

What risk level is update_mcp_server_user_access? +

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

Can I rate-limit update_mcp_server_user_access? +

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

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

update_mcp_server_user_access is provided by the Portkey Admin MCP server (CodesWhat/portkey-admin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.