8 tools · your own account · never metered

Slack MCP for AI agents

Read and post messages in your workspace with a bot you create and control. Connect your own Slack account once and your agent uses it from then on, through one treg.to token. Calls on your own connection are never metered.

Start free See all 8 tools API docs ↗

$1.00 of free credit on every new team · no provider signup · no card

works in

What your agent can now do

Slack, one prompt away

AGENT

list your workspace's channels✓

post a message to a channel✓

read a channel's recent messages✓

→

▚ treg

$ treg call slack.slack.channels.list

✓ 200 · free

$ treg call slack.slack.message.send

✓ 200 · free

$ treg call slack.slack.messages.history

✓ 200 · free

$ _

→

SlackYOUR ACCOUNT

Read and post messages in your workspace with a bot you create and control.

⚒ 8 TOOLS

Community · https://slack.com/api

Set up

Set up Slack in Claude Code, Codex or any agent

1Give this to your agent

in your agent's chat

set up treg — https://treg.to/llms.txt

2Or add the MCP server yourself

claude code

claude mcp add --transport http treg https://treg.to/mcp

ChatGPT

Settings → Connectors → add https://treg.to/mcp as a custom connector.

Grok bot

Add https://treg.to/mcp as a remote MCP connector in its tool settings.

Claude Desktop

Settings → Connectors → Add custom connector → https://treg.to/mcp.

Cursor, Codex, any MCP client

Point it at https://treg.to/mcp (HTTP transport).

CLI

curl -fsSL https://treg.to/install.sh | sh

Plain HTTP

LangChain, CrewAI or any code: /call/<tool-id> with a Bearer token. No SDK.

Try it

What's the best way to ask?

the prompt

Using treg, list your workspace's channels. Show me the price first.

Run one directly

a call

curl -H "Authorization: Bearer $TREG_TOKEN" \
  "https://treg.to/call/slack.slack.channels.list"

Why treg.to

Why call Slack through treg.to

Your account, held safely

Connect once; treg.to keeps the credential server-side and injects it per call. No key on any machine.

Price before the call

The provider's own rate, $0.000 markup. How billing works.

No subscription, no seats

Charged per call. $1.00 free per new team, no card to start.

Your own Slack key is free

Switch by changing a word

Another provider is a different word in the prompt, not a new integration.

One key, the whole catalog

The same token calls every provider in the catalog and ~2,600 other tools.

The shelf

All 8 Slack tools

Slack · 8 tools

List your Slack workspace channels, public and private · free
List the channels in your Slack workspace, public and private slack.slack.channels.list
Send a Slack message to a channel or thread · free
Post a message to a Slack channel, or reply in a thread slack.slack.message.send
Read recent messages from a Slack channel · free
Read recent messages from a Slack channel slack.slack.messages.history
Read the replies in a Slack message thread · free
Read the replies in a Slack message thread slack.slack.thread.replies
Slack channel details by id — topic, member count · free
Get a Slack channel's details — topic, purpose, member count and archived state slack.slack.channel.info
List the members of your Slack workspace · free
List the members of your Slack workspace slack.slack.users.list
Slack member profile by user id · free
Get a Slack workspace member's profile by user ID slack.slack.user.profile
Add an emoji reaction to a Slack message · free
Add an emoji reaction to a Slack message slack.slack.reaction.add

Reliability badges come from live traffic through treg.to, not a controlled benchmark.

Questions

Before you start

Do I need a Slack account?

Yes. This is an own-account connection: you sign in to Slack once and your agent uses that connection through your treg.to token. Calls on it are never metered.

How do I add Slack to Claude Code?

Run: claude mcp add --transport http treg https://treg.to/mcp — one MCP server carries Slack and the rest of the catalog.

Which frameworks does it work with?

Anything that speaks MCP (Claude Code, Claude Desktop, ChatGPT, Codex, Cursor, Grok) and anything that can make an HTTP request (LangChain, CrewAI, LlamaIndex, plain code).

Is this the official Slack MCP server?

No. treg.to serves Slack's real API through its own metered proxy: the request is the provider's own, the credential is injected server-side, and the answer is relayed verbatim. The official Slack channels are linked above.