# Add Topic To Post — Slab

> Associate a topic with a post via the addTopicToPost GraphQL mutation, returning the topic. Run Search Posts to obtain the post ID and List Topics to obtain the topic ID before calling. Example: postId abc123, topicId abc12def returns…

- Key: `slab-add-topic-to-post`
- Type: Action (Write)
- Version: 0.0.1
- App: Slab (`slab`) — https://pipedream.com/apps/slab.md
- This page (HTML): https://pipedream.com/apps/slab/actions/add-topic-to-post
- Hints: open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/slab/actions/add-topic-to-post/add-topic-to-post.mjs

## Description

Associate a topic with a post via the `addTopicToPost` GraphQL mutation, returning the topic. Run **Search Posts** to obtain the post ID and **List Topics** to obtain the topic ID before calling. Example: postId `abc123`, topicId `abc12def` returns `{"id":"abc12def","name":"Engineering"}`. [See the documentation](https://studio.apollographql.com/public/Slab/variant/current/schema/reference/objects/RootMutationType#addTopicToPost).

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `postId` | `string` | Yes | ID of the post to add the topic to. Run Search Posts first to obtain the ID. |
| `topicId` | `string` | Yes | ID of the topic to associate with the post. Run List Topics first to obtain the ID. |

## 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": "slab",
      },
    },
  },
)

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: "slab-add-topic-to-post",
  arguments: {
    postId: "Post ID",
    topicId: "Topic 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: "slab-add-topic-to-post",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    slab: { authProvisionId: "apn_xxxxxxx" },
    postId: "Post ID",
    topicId: "Topic 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": "slab-add-topic-to-post",
    "configured_props": {
      "slab": { "authProvisionId": "apn_xxxxxxx" },
      "postId": "Post ID",
      "topicId": "Topic ID"
    }
  }'
```

---

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