html_encode · Devutils MCP: Risk & Policy

WHAT IT DOES

What html_encode does on Devutils

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

WHY IT NEEDS A POLICY

Why html_encode needs a policy

HTML encoding transforms data reversibly without destructive side effects or external operations. It modifies content in-place and can be reversed via html_decode. No code execution, deletion, financial impact, or irreversible changes occur. This is a data transformation utility, categorized as Write (creates/modifies data reversibly).

From the tool's definition Tool name 'html_encode' and description 'Encode special characters in a string to HTML entities' — this converts input strings by replacing special characters with HTML entity equivalents.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

html_encode Rate-limited

html_encode 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": {
    "html_encode": {
      "limits": [
        {
          "counter": "html_encode_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 Devutils, so you can run agents against it safely.

FAQ

Questions about html_encode

What does the html_encode tool do? +

Encode special characters in a string to HTML entities. It is categorised as a Write tool in the Devutils MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on html_encode? +

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

What risk level is html_encode? +

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

Can I rate-limit html_encode? +

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

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

html_encode is provided by the Devutils MCP server (paladini/devutils-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.