# OnlineCheckWriter — Pipedream Connect

> Online Check Writer: Online Check Printing, eChecks, Mail Checks

- API slug: `onlinecheckwriter` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Business Management
- Website: https://onlinecheckwriter.com/
- This page (HTML): https://pipedream.com/apps/onlinecheckwriter
- Tools: 10 actions · 0 triggers

## Connect via MCP (recommended)

- Endpoint: `https://remote.mcp.pipedream.net/v3`
- Headers: `Authorization: Bearer <token>` · `x-pd-project-id` · `x-pd-environment` · `x-pd-external-user-id` · `x-pd-app-slug: onlinecheckwriter`

```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": "onlinecheckwriter",
      },
    },
  },
)

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

const { tools } = await mcp.listTools()

// e.g. run Create Check:
const result = await mcp.callTool({
  name: "onlinecheckwriter-create-check",
  arguments: {
    bankAccountId: "Bank Account ID",
    payeeId: "Payee ID",
  },
})
```

Docs: [MCP guide](https://pipedream.com/docs/connect/mcp/developers.md)

## API proxy

For a OnlineCheckWriter endpoint with no pre-built tool, the proxy forwards your request with the connected user's credentials attached.

```bash
# The path segment is the target URL, URL-safe base64 encoded:
# https://api.example.com/v1/me

curl "https://api.pipedream.com/v1/connect/{project_id}/proxy/aHR0cHM6Ly9hcGkuZXhhbXBsZS5jb20vdjEvbWU?external_user_id={external_user_id}&account_id=apn_xxxxxxx" \
  -H "Authorization: Bearer {access_token}" \
  -H "x-pd-environment: production"
```

Docs: [API proxy guide](https://pipedream.com/docs/connect/api-proxy.md)

## SDK

```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: "onlinecheckwriter-create-check",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    onlinecheckwriter: { authProvisionId: "apn_xxxxxxx" },
    bankAccountId: "Bank Account ID",
    payeeId: "Payee ID",
  },
})
```

Docs: [Managed auth guide](https://pipedream.com/docs/connect/managed-auth/quickstart.md) · [Tools guide](https://pipedream.com/docs/connect/components.md)

## Actions (10)

### `onlinecheckwriter-create-check` — Create Check (Write)

Creates a new check. See the documentation

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/create-check.md

### `onlinecheckwriter-create-email-check` — Create Email Check (Write)

Create an email check for a payee. See the documentation.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/create-email-check.md

### `onlinecheckwriter-create-mail-check` — Create Mail Check (Write)

Creates a mail check. See the documentation.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/create-mail-check.md

### `onlinecheckwriter-create-payee` — Create Payee (Write)

Registers a new payee within the system.See the documentation

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/create-payee.md

### `onlinecheckwriter-list-bank-account-id-options` — List Bank Account ID Options (Read-only)

Retrieves available options for the Bank Account ID field.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/list-bank-account-id-options.md

### `onlinecheckwriter-list-category-id-options` — List Category ID Options (Read-only)

Retrieves available options for the Category ID field.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/list-category-id-options.md

### `onlinecheckwriter-list-custom-from-address-id-options` — List Custom From Address ID Options (Read-only)

Retrieves available options for the Custom From Address ID field.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/list-custom-from-address-id-options.md

### `onlinecheckwriter-list-custom-to-address-id-options` — List Custom To Address ID Options (Read-only)

Retrieves available options for the Custom To Address ID field.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/list-custom-to-address-id-options.md

### `onlinecheckwriter-list-payee-id-options` — List Payee ID Options (Read-only)

Retrieves available options for the Payee ID field.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/list-payee-id-options.md

### `onlinecheckwriter-mail-pdf-document` — Mail PDF Document (Write)

Mails a PDF document to a destination. See the documentation.

Full schema: https://pipedream.com/apps/onlinecheckwriter/actions/mail-pdf-document.md

---

- All apps: https://pipedream.com/apps — index: https://pipedream.com/llms.txt
- Pipedream docs for agents: https://pipedream.com/docs/llms.txt