# Send Slack to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "slack-api",
    "name": "Slack",
    "source": "tencent",
    "type": "skill",
    "category": "效率提升",
    "sourceUrl": "https://clawhub.ai/byungkyu/slack-api",
    "canonicalUrl": "https://clawhub.ai/byungkyu/slack-api",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/slack-api",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=slack-api",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "SKILL.md",
      "LICENSE.txt"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "slug": "slack-api",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-05-01T05:33:02.968Z",
      "expiresAt": "2026-05-08T05:33:02.968Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=slack-api",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=slack-api",
        "contentDisposition": "attachment; filename=\"slack-api-1.0.9.zip\"",
        "redirectLocation": null,
        "bodySnippet": null,
        "slug": "slack-api"
      },
      "scope": "item",
      "summary": "Item download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this item.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/slack-api"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/slack-api",
    "downloadUrl": "https://openagent3.xyz/downloads/slack-api",
    "agentUrl": "https://openagent3.xyz/skills/slack-api/agent",
    "manifestUrl": "https://openagent3.xyz/skills/slack-api/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/slack-api/agent.md"
  }
}
```
## Documentation

### Slack

Access the Slack API with managed OAuth authentication. Send messages, manage channels, list users, and automate Slack workflows.

### Quick Start

# Post a message to a channel
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'channel': 'C0123456789', 'text': 'Hello from Maton!'}).encode()
req = urllib.request.Request('https://gateway.maton.ai/slack/api/chat.postMessage', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

### Base URL

https://gateway.maton.ai/slack/{method}

The gateway proxies requests to slack.com and automatically injects your OAuth token.

### Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

### Getting Your API Key

Sign in or create an account at maton.ai
Go to maton.ai/settings
Copy your API key

### Connection Management

Manage your Slack OAuth connections at https://ctrl.maton.ai.

### List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=slack&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

### Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'slack'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

### Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "slack",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

### Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

### Specifying Connection

If you have multiple Slack connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'channel': 'C0123456789', 'text': 'Hello!'}).encode()
req = urllib.request.Request('https://gateway.maton.ai/slack/api/chat.postMessage', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '21fd90f9-5935-43cd-b6c8-bde9d915ca80')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

### Authentication

Auth Test

GET /slack/api/auth.test

Returns current user and team info.

### Messages

Post Message

POST /slack/api/chat.postMessage
Content-Type: application/json

{
  "channel": "C0123456789",
  "text": "Hello, world!"
}

With blocks:

POST /slack/api/chat.postMessage
Content-Type: application/json

{
  "channel": "C0123456789",
  "blocks": [
    {"type": "section", "text": {"type": "mrkdwn", "text": "*Bold* and _italic_"}}
  ]
}

Post Thread Reply

POST /slack/api/chat.postMessage
Content-Type: application/json

{
  "channel": "C0123456789",
  "thread_ts": "1234567890.123456",
  "text": "This is a reply in a thread"
}

Update Message

POST /slack/api/chat.update
Content-Type: application/json

{
  "channel": "C0123456789",
  "ts": "1234567890.123456",
  "text": "Updated message"
}

Delete Message

POST /slack/api/chat.delete
Content-Type: application/json

{
  "channel": "C0123456789",
  "ts": "1234567890.123456"
}

Schedule Message

POST /slack/api/chat.scheduleMessage
Content-Type: application/json

{
  "channel": "C0123456789",
  "text": "Scheduled message",
  "post_at": 1734567890
}

List Scheduled Messages

GET /slack/api/chat.scheduledMessages.list

Delete Scheduled Message

POST /slack/api/chat.deleteScheduledMessage
Content-Type: application/json

{
  "channel": "C0123456789",
  "scheduled_message_id": "Q1234567890"
}

Get Permalink

GET /slack/api/chat.getPermalink?channel=C0123456789&message_ts=1234567890.123456

### Conversations (Channels)

List Channels

GET /slack/api/conversations.list?types=public_channel,private_channel&limit=100

Types: public_channel, private_channel, im, mpim

Get Channel Info

GET /slack/api/conversations.info?channel=C0123456789

Get Channel History

GET /slack/api/conversations.history?channel=C0123456789&limit=100

With time range:

GET /slack/api/conversations.history?channel=C0123456789&oldest=1234567890&latest=1234567899

Get Thread Replies

GET /slack/api/conversations.replies?channel=C0123456789&ts=1234567890.123456

Get Channel Members

GET /slack/api/conversations.members?channel=C0123456789&limit=100

Create Channel

POST /slack/api/conversations.create
Content-Type: application/json

{
  "name": "new-channel-name",
  "is_private": false
}

Join Channel

POST /slack/api/conversations.join
Content-Type: application/json

{
  "channel": "C0123456789"
}

Leave Channel

POST /slack/api/conversations.leave
Content-Type: application/json

{
  "channel": "C0123456789"
}

Archive Channel

POST /slack/api/conversations.archive
Content-Type: application/json

{
  "channel": "C0123456789"
}

Unarchive Channel

POST /slack/api/conversations.unarchive
Content-Type: application/json

{
  "channel": "C0123456789"
}

Rename Channel

POST /slack/api/conversations.rename
Content-Type: application/json

{
  "channel": "C0123456789",
  "name": "new-name"
}

Set Channel Topic

POST /slack/api/conversations.setTopic
Content-Type: application/json

{
  "channel": "C0123456789",
  "topic": "Channel topic here"
}

Set Channel Purpose

POST /slack/api/conversations.setPurpose
Content-Type: application/json

{
  "channel": "C0123456789",
  "purpose": "Channel purpose here"
}

Invite to Channel

POST /slack/api/conversations.invite
Content-Type: application/json

{
  "channel": "C0123456789",
  "users": "U0123456789,U9876543210"
}

Kick from Channel

POST /slack/api/conversations.kick
Content-Type: application/json

{
  "channel": "C0123456789",
  "user": "U0123456789"
}

Mark Channel Read

POST /slack/api/conversations.mark
Content-Type: application/json

{
  "channel": "C0123456789",
  "ts": "1234567890.123456"
}

### Direct Messages

Open DM Conversation

POST /slack/api/conversations.open
Content-Type: application/json

{
  "users": "U0123456789"
}

For group DM:

POST /slack/api/conversations.open
Content-Type: application/json

{
  "users": "U0123456789,U9876543210"
}

List DM Channels

GET /slack/api/conversations.list?types=im

List Group DM Channels

GET /slack/api/conversations.list?types=mpim

My Conversations

GET /slack/api/users.conversations?limit=100

### Users

List Users

GET /slack/api/users.list?limit=100

Get User Info

GET /slack/api/users.info?user=U0123456789

Get User Presence

GET /slack/api/users.getPresence?user=U0123456789

Set User Presence

POST /slack/api/users.setPresence
Content-Type: application/json

{
  "presence": "away"
}

Lookup User by Email

GET /slack/api/users.lookupByEmail?email=user@example.com

### Reactions

Add Reaction

POST /slack/api/reactions.add
Content-Type: application/json

{
  "channel": "C0123456789",
  "name": "thumbsup",
  "timestamp": "1234567890.123456"
}

Remove Reaction

POST /slack/api/reactions.remove
Content-Type: application/json

{
  "channel": "C0123456789",
  "name": "thumbsup",
  "timestamp": "1234567890.123456"
}

Get Reactions on Message

GET /slack/api/reactions.get?channel=C0123456789&timestamp=1234567890.123456

List My Reactions

GET /slack/api/reactions.list?limit=100

### Stars

List Stars

GET /slack/api/stars.list?limit=100

Add Star

POST /slack/api/stars.add
Content-Type: application/json

{
  "channel": "C0123456789",
  "timestamp": "1234567890.123456"
}

Remove Star

POST /slack/api/stars.remove
Content-Type: application/json

{
  "channel": "C0123456789",
  "timestamp": "1234567890.123456"
}

### Bots

Get Bot Info

GET /slack/api/bots.info?bot=B0123456789

### Files

Upload File

POST /slack/api/files.upload
Content-Type: multipart/form-data

channels=C0123456789
content=file content here
filename=example.txt
title=Example File

Upload File v2 (Get Upload URL)

GET /slack/api/files.getUploadURLExternal?filename=example.txt&length=1024

Complete File Upload

POST /slack/api/files.completeUploadExternal
Content-Type: application/json

{
  "files": [{"id": "F0123456789", "title": "My File"}],
  "channel_id": "C0123456789"
}

Delete File

POST /slack/api/files.delete
Content-Type: application/json

{
  "file": "F0123456789"
}

Get File Info

GET /slack/api/files.info?file=F0123456789

### Search

Search Messages

GET /slack/api/search.messages?query=keyword

### JavaScript

const response = await fetch('https://gateway.maton.ai/slack/api/chat.postMessage', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': \`Bearer ${process.env.MATON_API_KEY}\`
  },
  body: JSON.stringify({ channel: 'C0123456', text: 'Hello!' })
});
const result = await response.json();
console.log(result);

### Python

import os
import requests

response = requests.post(
    'https://gateway.maton.ai/slack/api/chat.postMessage',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    json={'channel': 'C0123456', 'text': 'Hello!'}
)
print(response.json())

### Notes

Channel IDs: C (public), G (private/group), D (DM)
User IDs start with U, Bot IDs start with B, Team IDs start with T
Message timestamps (ts) are unique identifiers
Use mrkdwn type for Slack-flavored markdown formatting
Thread replies use thread_ts to reference the parent message
Cursor-based pagination: use cursor from response_metadata.next_cursor

### Shell Notes

IMPORTANT: When using curl commands, use curl -g when URLs contain brackets (fields[], sort[], records[]) to disable glob parsing
IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments. You may get "Invalid API key" errors when piping.

### Error Handling

StatusMeaning400Missing Slack connection401Invalid or missing Maton API key429Rate limited (10 req/sec per account)4xx/5xxPassthrough error from Slack API

Missing Scope Errors: If you encounter missing_scope errors, contact Maton Support to request additional scopes for your connection.

### Troubleshooting: API Key Issues

Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

### Troubleshooting: Invalid App Name

Ensure your URL path starts with slack. For example:

Correct: https://gateway.maton.ai/slack/api/chat.postMessage
Incorrect: https://gateway.maton.ai/api/chat.postMessage

### Resources

Slack API Methods
Web API Reference
Block Kit Reference
Message Formatting
Rate Limits
Maton Community
Maton Support
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: byungkyu
- Version: 1.0.8
## Source health
- Status: healthy
- Item download looks usable.
- Yavira can redirect you to the upstream package for this item.
- Health scope: item
- Reason: direct_download_ok
- Checked at: 2026-05-01T05:33:02.968Z
- Expires at: 2026-05-08T05:33:02.968Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/slack-api)
- [Send to Agent page](https://openagent3.xyz/skills/slack-api/agent)
- [JSON manifest](https://openagent3.xyz/skills/slack-api/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/slack-api/agent.md)
- [Download page](https://openagent3.xyz/downloads/slack-api)