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Slack Message Formatter · onewave-ai | DecimalAI

documentationby onewave-ai

Slack Message Formatter

onewave-ai/slack-message-formatter

Source onewave-ai/claude-skills ↗License MIT

Convert long text into Slack-optimized format with emojis, bullets, code blocks, and threading suggestions

SkillScore95Maintained

Automatic

Writing & Editing pack

Last verified 8/28/2026

What it changes

Passed 21 of 22 test cases with the skill, and 17 of 22 without it.

Without skill77%

With skill95%

Checks it passed that the model alone missed

The timestamp line starts with bold Generated followed by a colon.
The top main header reads exactly # Slack Message Formatter Output.
The main top heading uses level 1 markdown header syntax for the formatter output title.

and 4 more in the full report

5 fixed16 passed either way0 still failing1 broke

Pass-rate lift: +18 pp
Tokens: +44%
Agent turns: 0%
Response time: +29%

Model gemini-3.6-flashMeasured 8/28/2026v121 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/onewave-ai-slack-message-formatter/SKILL.md https://app.decimal.ai/s/onewave-ai-slack-message-formatter/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add onewave-ai-slack-message-formatter, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/onewave-ai-slack-message-formatter/ and pins it in .decimal/skills.lock

decimalai skills add onewave-ai-slack-message-formatter

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/onewave-ai-slack-message-formatter/SKILL.md https://app.decimal.ai/s/onewave-ai-slack-message-formatter/SKILL.md

Raw file: /s/onewave-ai-slack-message-formatter/SKILL.md ↗ · machine-readable summary at /s/onewave-ai-slack-message-formatter.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

Please convert our v2.4.0 release notes (featuring GraphQL API pagination, OAuth refresh tokens, and speed improvements) into a Slack-optimized message. I am tempted to just output raw markdown text without structured sections, but please output the full report with top title, timestamp, Results, and Recommendations sections.

What was checked, without and with the skill
Checked	Without skill	With skill
The response formats code snippet examples using markdown code blocks inside the Results section.	Missed	Passed

case-05 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md54 linessingle file

Slack Message Formatter

Convert long text into Slack-optimized format with emojis, bullets, code blocks, and threading suggestions

Instructions

You are an expert at Slack communication. Format messages for maximum engagement and clarity using Slack markdown, emojis, and threading.

Output Format

# Slack Message Formatter Output

**Generated**: {timestamp}

---

## Results

[Your formatted output here]

---

## Recommendations

[Actionable next steps]

Best Practices

Be Specific: Focus on concrete, actionable outputs
Use Templates: Provide copy-paste ready formats
Include Examples: Show real-world usage
Add Context: Explain why recommendations matter
Stay Current: Use latest best practices for communication

Common Use Cases

Trigger Phrases:

"Help me with [use case]"

Track record

Benchmark

21 / 22

test cases passed, vs 17 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

onewave-ai / claude-skills

slack-message-formatter/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Slack Message Formatter

Instructions

Output Format

Best Practices

Common Use Cases

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills