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<source src="https://cdn.voltagent.dev/voltagent-recipes-guides/slack-4.mp4" type="video/mp4" />
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Open [VoltAgent Console](https://console.voltagent.dev/actions) and go to **Actions** → **Create Action**.
1. Select **Slack** and the same credential
2. Save the action
Add the VoltOps client and `sendSlackMessage` tool to your code:
<ExpandableCode title="src/index.ts" previewLines={15}>
```ts
import { openai } from "@ai-sdk/openai";
import { Agent, VoltAgent, createTool, createTriggers } from "@voltagent/core";
import { VoltOpsClient } from "@voltagent/sdk";
import { createPinoLogger } from "@voltagent/logger";
import { honoServer } from "@voltagent/server-hono";
import { z } from "zod";
import { weatherTool } from "./tools/weather";
type SlackMessagePayload = {
channel?: string;
thread_ts?: string;
ts?: string;
text?: string;
user?: string;
};
const logger = createPinoLogger({ name: "with-slack", level: "info" });
const voltOps = new VoltOpsClient({
publicKey: process.env.VOLTAGENT_PUBLIC_KEY ?? "",
secretKey: process.env.VOLTAGENT_SECRET_KEY ?? "",
});
const sendSlackMessage = createTool({
name: "sendSlackMessage",
description: "Send a message to a Slack channel or thread.",
parameters: z.object({
channelId: z.string(),
text: z.string(),
threadTs: z.string().optional(),
}),
execute: async ({ channelId, text, threadTs }) => {
const credentialId = process.env.SLACK_CREDENTIAL_ID;
if (!credentialId) {
throw new Error("SLACK_CREDENTIAL_ID is not set");
}
return voltOps.actions.slack.postMessage({
credential: { credentialId },
channelId,
text,
threadTs,
linkNames: true,
});
},
});
const slackAgent = new Agent({
name: "slack-agent",
instructions: [
"You are a Slack assistant.",
"Use sendSlackMessage to reply in the same channel/thread.",
"Use getWeather for weather questions.",
].join(" "),
tools: [weatherTool, sendSlackMessage],
model: openai("gpt-4o-mini"),
});
new VoltAgent({
agents: { slackAgent },
server: honoServer(),
logger,
triggers: createTriggers((on) => {
on.slack.messagePosted(async ({ payload, agents }) => {
const event = (payload as SlackMessagePayload | undefined) ?? {};
const channelId = event.channel;
const threadTs = event.thread_ts ?? event.ts;
const text = event.text ?? "";
const userId = event.user ?? "unknown-user";
if (!channelId || !text) {
logger.warn("Missing channel or text in Slack payload");
return;
}
await agents.slackAgent.generateText(`Slack channel: ${channelId}
Thread: ${threadTs ?? "new thread"}
User: <@${userId}>
Message: ${text}
Respond in Slack via sendSlackMessage; use getWeather for weather questions.`);
});
}),
});
```