set_dkim_signature

Set or delete DKIM signature for email authentication

SERVER20i MCP Server SOURCEcbrown35/20i-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/cbrown35-20i-mcp/set-dkim-signature.md

WHAT IT DOES

What set_dkim_signature does on 20i MCP Server

AI agents use set_dkim_signature to create or update resources in 20i MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 20i MCP Server environment.

RISK

Why set_dkim_signature is rated Medium

Setting or deleting DKIM signatures modifies email security configuration but does not irreversibly destroy data (DKIM can be reconfigured). This is Write-category because it creates or modifies configuration reversibly.

From the tool's definition Tool description states 'Set or delete DKIM signature' — this modifies email authentication configuration, which is reversible data modification. The function enables changing cryptographic signing keys used for email authentication.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_dkim_signature safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 20i MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_dkim_signature, this is the rule to start with:

set_dkim_signature Rate-limited

set_dkim_signature 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": {
    "set_dkim_signature": {
      "limits": [
        {
          "counter": "set_dkim_signature_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 20i MCP Server, apply this rule, and every set_dkim_signature call is checked against it from then on.

FAQ

Questions about set_dkim_signature

What does the set_dkim_signature tool do? +

Set or delete DKIM signature for email authentication. It is categorised as a Write tool in the 20i MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_dkim_signature? +

Register the 20i MCP Server MCP server in PolicyLayer and add a rule for set_dkim_signature: 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 20i MCP Server. Nothing to install.

What risk level is set_dkim_signature? +

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

Can I rate-limit set_dkim_signature? +

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

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

set_dkim_signature is provided by the 20i MCP Server MCP server (cbrown35/20i-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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