update_guardrail

Update a guardrail

SERVERPortkey Admin SOURCEcodeswhat/portkey-admin-mcp

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/codeswhat-portkey-admin-mcp/update-guardrail.md

WHAT IT DOES

What update_guardrail does on Portkey Admin

AI agents use update_guardrail 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.

RISK

Why update_guardrail is rated Medium

The tool modifies guardrail settings, which are security/control mechanisms. Updating guardrails could weaken protection policies or change system behavior in ways that affect API security and content filtering. This is a reversible Write operation (guardrail updates can be rolled back), but carries high severity due to potential impact on system safety controls if misused by an agent.

From the tool's definition Tool name 'update_guardrail' and description 'Update a guardrail' indicate modification of existing guardrail configurations without deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_guardrail safely

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

update_guardrail Rate-limited

update_guardrail 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_guardrail": {
      "limits": [
        {
          "counter": "update_guardrail_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 Portkey Admin, apply this rule, and every update_guardrail call is checked against it from then on.

FAQ

Questions about update_guardrail

What does the update_guardrail tool do? +

Update a guardrail. 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.

How do I enforce a policy on update_guardrail? +

Register the Portkey Admin MCP server in PolicyLayer and add a rule for update_guardrail: 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_guardrail? +

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

Can I rate-limit update_guardrail? +

Yes. Add a rate_limit block to the update_guardrail 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_guardrail completely? +

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

update_guardrail 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.

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