Awesome-omni-skills slack-automation

Slack Automation via Rube MCP workflow skill. Use this skill when the user needs Automate Slack workspace operations including messaging, search, channel management, and reaction workflows through Composio's Slack toolkit and the operator should preserve the upstream workflow, copied support files, and provenance before merging or handing off.

install

source · Clone the upstream repo

git clone https://github.com/diegosouzapw/awesome-omni-skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/diegosouzapw/awesome-omni-skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/slack-automation" ~/.claude/skills/diegosouzapw-awesome-omni-skills-slack-automation && rm -rf "$T"

manifest: skills/slack-automation/SKILL.md

Slack Automation via Rube MCP

Overview

This public intake copy packages

plugins/antigravity-awesome-skills-claude/skills/slack-automation

from

https://github.com/sickn33/antigravity-awesome-skills

into the native Omni Skills editorial shape without hiding its origin.

Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.

This intake keeps the copied upstream files intact and uses

metadata.json

plus

ORIGIN.md

as the provenance anchor for review.

Slack Automation via Rube MCP Automate Slack workspace operations including messaging, search, channel management, and reaction workflows through Composio's Slack toolkit.

Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Prerequisites, Common Patterns, Known Pitfalls, Limitations.

When to Use This Skill

Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.

This skill is applicable to execute the workflow or actions described in the overview.
Use when the request clearly matches the imported source intent: Automate Slack workspace operations including messaging, search, channel management, and reaction workflows through Composio's Slack toolkit.
Use when the operator should preserve upstream workflow detail instead of rewriting the process from scratch.
Use when provenance needs to stay visible in the answer, PR, or review packet.
Use when copied upstream references, examples, or scripts materially improve the answer.
Use when the workflow should remain reviewable in the public intake repo before the private enhancer takes over.

Operating Table

Situation	Start here	Why it matters
First-time use	`metadata.json`	Confirms repository, branch, commit, and imported path before touching the copied workflow
Provenance review	`ORIGIN.md`	Gives reviewers a plain-language audit trail for the imported source
Workflow execution	`SKILL.md`	Starts with the smallest copied file that materially changes execution
Supporting context	`SKILL.md`	Adds the next most relevant copied source file without loading the entire package
Handoff decision	`## Related Skills`	Helps the operator switch to a stronger native skill when the task drifts

Workflow

This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.

Verify Rube MCP is available by confirming RUBESEARCHTOOLS responds
Call RUBEMANAGECONNECTIONS with toolkit slack
If connection is not ACTIVE, follow the returned auth link to complete Slack OAuth
Confirm connection status shows ACTIVE before running any workflows
SLACKFINDCHANNELS - Resolve channel name to channel ID [Prerequisite]
SLACKLISTALLCHANNELS - Fallback if FINDCHANNELS returns empty/ambiguous results [Fallback]
SLACKFINDUSERS - Resolve user for DMs or @mentions [Optional]

Imported Workflow Notes

Imported: Setup

Get Rube MCP: Add

https://rube.app/mcp

as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.

Verify Rube MCP is available by confirming
```
RUBE_SEARCH_TOOLS
```
responds
Call
```
RUBE_MANAGE_CONNECTIONS
```
with toolkit
```
slack
```
If connection is not ACTIVE, follow the returned auth link to complete Slack OAuth
Confirm connection status shows ACTIVE before running any workflows

Imported: Core Workflows

1. Send Messages to Channels

When to use: User wants to post a message to a Slack channel or DM

Tool sequence:

```
SLACK_FIND_CHANNELS
```
- Resolve channel name to channel ID [Prerequisite]
```
SLACK_LIST_ALL_CHANNELS
```
- Fallback if FIND_CHANNELS returns empty/ambiguous results [Fallback]
```
SLACK_FIND_USERS
```
- Resolve user for DMs or @mentions [Optional]
```
SLACK_OPEN_DM
```
- Open/reuse a DM channel if messaging a user directly [Optional]
```
SLACK_SEND_MESSAGE
```
- Post the message with resolved channel ID [Required]
```
SLACK_UPDATES_A_SLACK_MESSAGE
```
- Edit the posted message if corrections needed [Optional]

Key parameters:

```
channel
```
: Channel ID or name (without '#' prefix)
```
markdown_text
```
: Preferred field for formatted messages (supports headers, bold, italic, code blocks)
```
text
```
: Raw text fallback (deprecated in favor of markdown_text)
```
thread_ts
```
: Timestamp of parent message to reply in a thread
```
blocks
```
: Block Kit layout blocks (deprecated, use markdown_text)

Pitfalls:

```
SLACK_FIND_CHANNELS
```
requires
```
query
```
param; missing it errors with "Invalid request data provided"
```
SLACK_SEND_MESSAGE
```
requires valid channel plus one of markdown_text/text/blocks/attachments
Invalid block payloads return error=invalid_blocks (max 50 blocks)
Replies become top-level posts if
```
thread_ts
```
is omitted
Persist
```
response.data.channel
```
and
```
response.data.message.ts
```
from SEND_MESSAGE for edit/thread operations

2. Search Messages and Conversations

When to use: User wants to find specific messages across the workspace

Tool sequence:

```
SLACK_FIND_CHANNELS
```
- Resolve channel for scoped search with
```
in:#channel
```
[Optional]
```
SLACK_FIND_USERS
```
- Resolve user for author filter with
```
from:@user
```
[Optional]
```
SLACK_SEARCH_MESSAGES
```
- Run keyword search across accessible conversations [Required]

SLACK_FETCH_MESSAGE_THREAD_FROM_A_CONVERSATION

- Expand threads for relevant hits [Required]

Key parameters:

query

: Search string supporting modifiers (

in:#channel

from:@user

before:YYYY-MM-DD

after:YYYY-MM-DD

has:link

has:file

)

```
count
```
: Results per page (max 100), or total with auto_paginate=true
```
sort
```
: 'score' (relevance) or 'timestamp' (chronological)
```
sort_dir
```
: 'asc' or 'desc'

Pitfalls:

Validation fails if
```
query
```
is missing/empty
```
ok=true
```
can still mean no hits (
```
response.data.messages.total=0
```
)

Matches are under

response.data.messages.matches

(sometimes also

response.data_preview.messages.matches

)

```
match.text
```
may be empty/truncated; key info can appear in
```
matches[].attachments[]
```
Thread expansion via FETCH_MESSAGE_THREAD can truncate when
```
response.data.has_more=true
```
; paginate via
```
response_metadata.next_cursor
```

3. Manage Channels and Users

When to use: User wants to list channels, users, or workspace info

Tool sequence:

```
SLACK_FETCH_TEAM_INFO
```
- Validate connectivity and get workspace identity [Required]
```
SLACK_LIST_ALL_CHANNELS
```
- Enumerate public channels [Required]
```
SLACK_LIST_CONVERSATIONS
```
- Include private channels and DMs [Optional]
```
SLACK_LIST_ALL_USERS
```
- List workspace members [Required]
```
SLACK_RETRIEVE_CONVERSATION_INFORMATION
```
- Get detailed channel metadata [Optional]

SLACK_LIST_USER_GROUPS_FOR_TEAM_WITH_OPTIONS

- List user groups [Optional]

Key parameters:

```
cursor
```
: Pagination cursor from
```
response_metadata.next_cursor
```
```
limit
```
: Results per page (default varies; set explicitly for large workspaces)
```
types
```
: Channel types filter ('public_channel', 'private_channel', 'im', 'mpim')

Pitfalls:

Workspace metadata is nested under
```
response.data.team
```
, not top-level
```
SLACK_LIST_ALL_CHANNELS
```
returns public channels only; use
```
SLACK_LIST_CONVERSATIONS
```
for private/IM coverage
```
SLACK_LIST_ALL_USERS
```
can hit HTTP 429 rate limits; honor Retry-After header
Always paginate via
```
response_metadata.next_cursor
```
until empty; de-duplicate by
```
id
```

4. React to and Thread Messages

When to use: User wants to add reactions or manage threaded conversations

Tool sequence:

SLACK_SEARCH_MESSAGES

SLACK_FETCH_CONVERSATION_HISTORY

- Find the target message [Prerequisite]

```
SLACK_ADD_REACTION_TO_AN_ITEM
```
- Add an emoji reaction [Required]
```
SLACK_FETCH_ITEM_REACTIONS
```
- List reactions on a message [Optional]
```
SLACK_REMOVE_REACTION_FROM_ITEM
```
- Remove a reaction [Optional]
```
SLACK_SEND_MESSAGE
```
- Reply in thread using
```
thread_ts
```
[Optional]

SLACK_FETCH_MESSAGE_THREAD_FROM_A_CONVERSATION

- Read full thread [Optional]

Key parameters:

```
channel
```
: Channel ID where the message lives
```
timestamp
```
/
```
ts
```
: Message timestamp (unique identifier like '1234567890.123456')
```
name
```
: Emoji name without colons (e.g., 'thumbsup', 'wave::skin-tone-3')
```
thread_ts
```
: Parent message timestamp for threaded replies

Pitfalls:

Reactions require exact channel ID + message timestamp pair
Emoji names use Slack's naming convention without colons
```
SLACK_FETCH_CONVERSATION_HISTORY
```
only returns main channel timeline, NOT threaded replies

Use

SLACK_FETCH_MESSAGE_THREAD_FROM_A_CONVERSATION

with parent's

thread_ts

to get thread replies

5. Schedule Messages

When to use: User wants to schedule a message for future delivery

Tool sequence:

```
SLACK_FIND_CHANNELS
```
- Resolve channel ID [Prerequisite]
```
SLACK_SCHEDULE_MESSAGE
```
- Schedule the message with
```
post_at
```
timestamp [Required]

Key parameters:

```
channel
```
: Resolved channel ID
```
post_at
```
: Unix timestamp for delivery (up to 120 days in advance)
```
text
```
/
```
blocks
```
: Message content

Pitfalls:

Scheduling is limited to 120 days in advance
```
post_at
```
must be a Unix timestamp, not ISO 8601

Imported: Prerequisites

Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
Active Slack connection via
```
RUBE_MANAGE_CONNECTIONS
```
with toolkit
```
slack
```
Always call
```
RUBE_SEARCH_TOOLS
```
first to get current tool schemas

Examples

Example 1: Ask for the upstream workflow directly

Use @slack-automation to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.

Explanation: This is the safest starting point when the operator needs the imported workflow, but not the entire repository.

Example 2: Ask for a provenance-grounded review

Review @slack-automation against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.

Explanation: Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.

Example 3: Narrow the copied support files before execution

Use @slack-automation for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.

Explanation: This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.

Example 4: Build a reviewer packet

Review @slack-automation using the copied upstream files plus provenance, then summarize any gaps before merge.

Explanation: This is useful when the PR is waiting for human review and you want a repeatable audit packet.

Best Practices

Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.

Keep the imported skill grounded in the upstream repository; do not invent steps that the source material cannot support.
Prefer the smallest useful set of support files so the workflow stays auditable and fast to review.
Keep provenance, source commit, and imported file paths visible in notes and PR descriptions.
Point directly at the copied upstream files that justify the workflow instead of relying on generic review boilerplate.
Treat generated examples as scaffolding; adapt them to the concrete task before execution.
Route to a stronger native skill when architecture, debugging, design, or security concerns become dominant.

Troubleshooting

Problem: The operator skipped the imported context and answered too generically

Symptoms: The result ignores the upstream workflow in

plugins/antigravity-awesome-skills-claude/skills/slack-automation

, fails to mention provenance, or does not use any copied source files at all. Solution: Re-open

metadata.json

ORIGIN.md

, and the most relevant copied upstream files. Load only the files that materially change the answer, then restate the provenance before continuing.

Problem: The imported workflow feels incomplete during review

Symptoms: Reviewers can see the generated

SKILL.md

, but they cannot quickly tell which references, examples, or scripts matter for the current task. Solution: Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it.

Problem: The task drifted into a different specialization

Symptoms: The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better. Solution: Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.

Related Skills

```
@server-management
```
- Use when the work is better handled by that native specialization after this imported skill establishes context.
```
@service-mesh-expert
```
- Use when the work is better handled by that native specialization after this imported skill establishes context.
```
@service-mesh-observability
```
- Use when the work is better handled by that native specialization after this imported skill establishes context.
```
@sexual-health-analyzer
```
- Use when the work is better handled by that native specialization after this imported skill establishes context.

Additional Resources

Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.

Resource family	What it gives the reviewer	Example path
`references`	copied reference notes, guides, or background material from upstream	`references/n/a`
`examples`	worked examples or reusable prompts copied from upstream	`examples/n/a`
`scripts`	upstream helper scripts that change execution or validation	`scripts/n/a`
`agents`	routing or delegation notes that are genuinely part of the imported package	`agents/n/a`
`assets`	supporting assets or schemas copied from the source package	`assets/n/a`

Imported Reference Notes

Imported: Quick Reference

Task	Tool Slug	Key Params
Find channels	`SLACK_FIND_CHANNELS`	`query`
List all channels	`SLACK_LIST_ALL_CHANNELS`	`limit` , `cursor` , `types`
Send message	`SLACK_SEND_MESSAGE`	`channel` , `markdown_text`
Edit message	`SLACK_UPDATES_A_SLACK_MESSAGE`	`channel` , `ts` , `markdown_text`
Search messages	`SLACK_SEARCH_MESSAGES`	`query` , `count` , `sort`
Get thread	`SLACK_FETCH_MESSAGE_THREAD_FROM_A_CONVERSATION`	`channel` , `ts`
Add reaction	`SLACK_ADD_REACTION_TO_AN_ITEM`	`channel` , `name` , `timestamp`
Find users	`SLACK_FIND_USERS`	`search_query` or `email`
List users	`SLACK_LIST_ALL_USERS`	`limit` , `cursor`
Open DM	`SLACK_OPEN_DM`	user IDs
Schedule message	`SLACK_SCHEDULE_MESSAGE`	`channel` , `post_at` , `text`
Get channel info	`SLACK_RETRIEVE_CONVERSATION_INFORMATION`	channel ID
Channel history	`SLACK_FETCH_CONVERSATION_HISTORY`	`channel` , `oldest` , `latest`
Workspace info	`SLACK_FETCH_TEAM_INFO`	(none)

Imported: Common Patterns

ID Resolution

Always resolve display names to IDs before operations:

Channel name -> Channel ID:
```
SLACK_FIND_CHANNELS
```
with
```
query
```
param
User name -> User ID:
```
SLACK_FIND_USERS
```
with
```
search_query
```
or
```
email
```
DM channel:
```
SLACK_OPEN_DM
```
with resolved user IDs

Pagination

Most list endpoints use cursor-based pagination:

Follow
```
response_metadata.next_cursor
```
until empty
Set explicit
```
limit
```
values (e.g., 100-200) for reliable paging
De-duplicate results by
```
id
```
across pages

Message Formatting

Prefer
```
markdown_text
```
over
```
text
```
or
```
blocks
```
for formatted messages
Use
```
<@USER_ID>
```
format to mention users (not @username)
Use
```
\n
```
for line breaks in markdown_text

Imported: Known Pitfalls

Channel resolution:
```
SLACK_FIND_CHANNELS
```
can return empty results if channel is private and bot hasn't been invited
Rate limits:
```
SLACK_LIST_ALL_USERS
```
and other list endpoints can hit HTTP 429; honor Retry-After header
Nested responses: Results may be nested under
```
response.data.results[0].response.data
```
in wrapped executions

Thread vs channel:

SLACK_FETCH_CONVERSATION_HISTORY

returns main timeline only; use

SLACK_FETCH_MESSAGE_THREAD_FROM_A_CONVERSATION

for thread replies

Message editing: Requires both
```
channel
```
and original message
```
ts
```
; persist these from SEND_MESSAGE response
Search delays: Recently posted messages may not appear in search results immediately
Scope limitations: Missing OAuth scopes can cause 403 errors; check with
```
SLACK_GET_APP_PERMISSION_SCOPES
```

Imported: Limitations

Use this skill only when the task clearly matches the scope described above.
Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.