# Rotate DKIM Keys — Postmark

> Creates a new DKIM key to replace your current key. Until the new DNS entries are confirmed, the pending values will be in DKIMPendingHost and DKIMPendingTextValue fields. After the new DKIM value is verified in DNS, the pending values…

- Key: `postmark-rotate-dkim-keys`
- Type: Action (Write)
- Version: 0.0.4
- App: Postmark (`postmark`) — https://pipedream.com/apps/postmark.md
- This page (HTML): https://pipedream.com/apps/postmark/actions/rotate-dkim-keys
- Hints: destructive · open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/postmark/actions/rotate-dkim-keys/rotate-dkim-keys.mjs

## Description

Creates a new DKIM key to replace your current key. Until the new DNS entries are confirmed, the pending values will be in DKIMPendingHost and DKIMPendingTextValue fields. After the new DKIM value is verified in DNS, the pending values will migrate to DKIMTextValue and DKIMPendingTextValue and Postmark will begin to sign emails with the new DKIM key. [See the documentation](https://postmarkapp.com/developer/api/domains-api#rotate-dkim)

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `domainId` | `string` | Yes | The identifier of the domain. Options are loaded from the connected account. |

## Run it

**MCP**

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "postmark",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// listTools() hands your model this tool's input schema, so it can
// fill the arguments itself:
const result = await mcp.callTool({
  name: "postmark-rotate-dkim-keys",
  arguments: {
    domainId: "Domain Id",
  },
})
```

**TypeScript**

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "postmark-rotate-dkim-keys",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    postmark: { authProvisionId: "apn_xxxxxxx" },
    domainId: "Domain Id",
  },
})

console.log(result)
```

**cURL**

```bash
curl -X POST https://api.pipedream.com/v1/connect/{project_id}/actions/run \
  -H "Content-Type: application/json" \
  -H "X-PD-Environment: production" \
  -H "Authorization: Bearer {access_token}" \
  -d '{
    "external_user_id": "{external_user_id}",
    "id": "postmark-rotate-dkim-keys",
    "configured_props": {
      "postmark": { "authProvisionId": "apn_xxxxxxx" },
      "domainId": "Domain Id"
    }
  }'
```

---

- App: https://pipedream.com/apps/postmark.md · All apps: https://pipedream.com/apps