# List Layers — ArcGIS Online

> List all layers in a Feature Service. Returns each layer's id, name, geometry type, and type. See the documentation

- Key: `arcgis_online-list-layers`
- Type: Action (Read-only)
- Version: 0.0.1
- App: ArcGIS Online (`arcgis_online`) — https://pipedream.com/apps/arcgis-online.md
- This page (HTML): https://pipedream.com/apps/arcgis-online/actions/list-layers
- Hints: read-only · open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/arcgis_online/actions/list-layers/list-layers.mjs

## Description

List all layers in a Feature Service. Returns each layer's id, name, geometry type, and type. [See the documentation](https://developers.arcgis.com/rest/services-reference/enterprise/feature-service/)

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `featureService` | `string` | Yes | The Feature Service to use: a 32-character portal item ID (e.g. "0123456789abcdef0123456789abcdef"), a full FeatureServer URL (e.g. "https://services.arcgis.com/.../FeatureServer/0"), or a service title that matches search results 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": "arcgis_online",
      },
    },
  },
)

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: "arcgis_online-list-layers",
  arguments: {
    featureService: "Feature Service",
  },
})
```

**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: "arcgis_online-list-layers",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    arcgis_online: { authProvisionId: "apn_xxxxxxx" },
    featureService: "Feature Service",
  },
})

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": "arcgis_online-list-layers",
    "configured_props": {
      "arcgis_online": { "authProvisionId": "apn_xxxxxxx" },
      "featureService": "Feature Service"
    }
  }'
```

---

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