affinity_type_text · Affinity MCP Server MCP: Risk & Policy

WHAT IT DOES

What affinity_type_text does on Affinity MCP Server

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

WHY IT NEEDS A POLICY

Why affinity_type_text needs a policy

The tool enables creation or modification of text content within Affinity documents and UI fields. While text can be edited and undone in most applications, an AI agent could misuse this to overwrite important text, populate fields with malicious content, or inject text into contexts where it causes unintended side effects.

From the tool's definition Tool description states it 'Type text into Affinity' which modifies content in the creative application through text input into fields, dialogs, and text tools. This is reversible content creation/modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

affinity_type_text Rate-limited

affinity_type_text 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": {
    "affinity_type_text": {
      "limits": [
        {
          "counter": "affinity_type_text_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 Affinity MCP Server, so you can run agents against it safely.

FAQ

Questions about affinity_type_text

What does the affinity_type_text tool do? +

Type text into Affinity (for text fields, dialogs, the text tool, etc.). It is categorised as a Write tool in the Affinity 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 affinity_type_text? +

Register the Affinity MCP Server MCP server in PolicyLayer and add a rule for affinity_type_text: 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 Affinity MCP Server. Nothing to install.

What risk level is affinity_type_text? +

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

Can I rate-limit affinity_type_text? +

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

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

affinity_type_text is provided by the Affinity MCP Server MCP server (sekharmalla/affinity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.