# create_interest_category

A write tool on the Mailchimp MCP MCP server.

Agent View of the PolicyLayer registry record for `create_interest_category`. HTML page: https://policylayer.com/tools/damientilman-mailchimp-mcp-server/create-interest-category

## Facts

- Tool: `create_interest_category`
- Server: Mailchimp MCP (`damientilman/mailchimp-mcp-server`) — https://policylayer.com/tools/damientilman-mailchimp-mcp-server.md
- Homepage: https://github.com/damientilman/mailchimp-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "create_interest_category",
    "arguments": {}
  }
}
```

## Why create_interest_category is rated Medium

The tool creates or adds a new interest category to a Mailchimp audience, which is a reversible data modification. This is a Write operation rather than Read (no data retrieval), Destructive (not irreversible), or Financial (no money movement). Severity is medium because misconfigured interest categories could affect email campaign targeting, but the impact is limited to metadata and reversible.

From the tool's own definition: "Tool name is 'create_interest_category' which indicates creation of a new entity; sibling tools include 'create_audience', 'create_campaign', 'create_interest' which are all Write operations in the Mailchimp MCP server context."

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mailchimp MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_interest_category": {
      "limits": [
        {
          "counter": "create_interest_category_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Mailchimp MCP (226)

- `cancel_send` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/cancel-send.md
- `delete_audience` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-audience.md
- `delete_batch_webhook` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-batch-webhook.md
- `delete_campaign` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign.md
- `delete_campaign_feedback` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign-feedback.md
- `delete_campaign_folder` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign-folder.md
- `delete_connected_site` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-connected-site.md
- `delete_file` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-file.md
- `delete_interest` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-interest.md
- `delete_interest_category` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-interest-category.md
- `delete_landing_page` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-landing-page.md
- `delete_member` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member.md
- `delete_member_note` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member-note.md
- `delete_member_permanent` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member-permanent.md
- `delete_merge_field` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-merge-field.md
- `delete_promo_code` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-promo-code.md
- `delete_promo_rule` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-promo-rule.md
- `delete_segment` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-segment.md
- `delete_store` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store.md
- `delete_store_cart` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-cart.md
- `delete_store_customer` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-customer.md
- `delete_store_order` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-order.md
- `delete_store_order_line` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-order-line.md
- `delete_store_product` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product.md
- `delete_store_product_image` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product-image.md
- `delete_store_product_variant` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product-variant.md
- `delete_template` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-template.md
- `delete_template_folder` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-template-folder.md
- `delete_verified_domain` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-verified-domain.md
- `delete_webhook` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-webhook.md
- …and 196 more: https://policylayer.com/tools/damientilman-mailchimp-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=damientilman-mailchimp-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/damientilman-mailchimp-mcp-server