---
title: Velt
description: Add agents to anchored comments across documents, canvases, PDFs, and video.
type: channel
keywords:
  - chat sdk
  - velt
  - comments
  - collaboration
  - documents
  - canvas
  - pdf
  - video
---

# Velt

Channel integration for eve. Add agents to anchored comments across documents, canvases, PDFs, and video.

## Install

Add this Chat SDK channel from eve's registry. This writes `agent/channels/velt.ts` and installs Chat SDK and its adapter dependencies:

```bash
eve add channel/chat-sdk-velt
```

## Quick start

Create `agent/channels/velt.ts`:

```ts
// agent/channels/velt.ts
import { createVeltAdapter } from "@veltdev/chat-sdk-adapter";
import { createMemoryState } from "@chat-adapter/state-memory";
import type { Message, Thread } from "chat";
import { chatSdkChannel } from "eve/channels/chat-sdk";

export const { bot, channel, send } = chatSdkChannel({
  userName: "My Agent",
  adapters: {
    velt: createVeltAdapter({
      apiKey: process.env.VELT_API_KEY!,
      webhookSecret: process.env.VELT_WEBHOOK_SECRET!,
      botUserId: "my-agent",
      botUserName: "My Agent",
    }),
  },
  state: createMemoryState(),
});

bot.onNewMention(async (thread: Thread, message: Message) => {
  await thread.subscribe();
  await send(message.text, { thread });
});

bot.onSubscribedMessage(async (thread: Thread, message: Message) => {
  await send(message.text, { thread });
});

export default channel;
```

See the [Velt adapter documentation](https://chat-sdk.dev/adapters/vendor-official/velt) for supported events, capabilities, and credentials.

## Configure

Create a Velt bot user and webhook, set `VELT_API_KEY` and `VELT_WEBHOOK_SECRET`, then send comment events to `/eve/v1/velt`. The adapter maps documents to channels, annotations to threads, and comments to messages. See the [Chat SDK channel docs](/docs/channels/chat-sdk) for eve session dispatch, state, streaming, and human-in-the-loop behavior.

[Read the full channel documentation](/docs/channels/chat-sdk)

---

For a semantic overview of all documentation, see [/sitemap.md](/sitemap.md)

For an index of all available documentation, see [/llms.txt](/llms.txt)

For agent-facing discovery, including API and MCP surfaces, see [/agents.md](/agents.md)