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X Long-Form Post Writer · evolution-foundation | DecimalAI

marketingby evolution-foundation

X Long-Form Post Writer

evolution-foundation/social-x-longform

Source evolution-foundation/evo-nexus ↗License NOASSERTION

Write long-form X (Twitter) posts and threads in a founder/CEO voice.

SkillScore91Maintained

Automatic

Marketing & Content pack

Last verified 8/19/2026

What it changes

Passed 21 of 23 test cases with the skill, and 5 of 23 without it.

Without skill22%

With skill91%

Checks it passed that the model alone missed

The post contains an ASCII diagram in a code block.
The post includes an ASCII diagram in a code block.
The output contains an ASCII diagram in a code block.

and 16 more in the full report

17 fixed4 passed either way1 still failing1 broke

Pass-rate lift: +70 pp
Tokens: +90%
Agent turns: 0%
Response time: +2%

Model gemini-3.6-flashMeasured 8/19/2026v121 of 23 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/evolution-foundation-social-x-longform/SKILL.md https://app.decimal.ai/s/evolution-foundation-social-x-longform/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add evolution-foundation-social-x-longform, 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/evolution-foundation-social-x-longform/ and pins it in .decimal/skills.lock

decimalai skills add evolution-foundation-social-x-longform

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

curl -fsSL --create-dirs -o .claude/skills/evolution-foundation-social-x-longform/SKILL.md https://app.decimal.ai/s/evolution-foundation-social-x-longform/SKILL.md

Raw file: /s/evolution-foundation-social-x-longform/SKILL.md ↗ · machine-readable summary at /s/evolution-foundation-social-x-longform.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 17 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 17

Prompt

I want to write a long post for X about our recent decision to eliminate our dedicated support team and make our core engineers handle customer tickets directly. My main point is that customer support teams often act as a buffer that hides product flaws from developers. Here is our data: response times dropped from 14 hours to 18 minutes, churn fell 22%, and we fixed 40% more root-cause bugs in Q3. Turn this into a polished, publish-ready X draft in a natural founder voice without introductory fluff.

What was checked, without and with the skill
Checked	Without skill	With skill
The output includes an ASCII diagram rendered inside a fenced code block.	Missed	Passed
The output contains no conversational preamble or introductory text before the post starts.	Passed	Passed

case-01 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md168 lines3 files

X Long-Form Post Writer

Write posts for X in your founder/CEO's authentic voice. Every post should feel like a real person wrote it — not a content team, not a bot.

See references/founder-voice.md for the founder voice template. Customize it with your founder's real patterns.

Voice Rules

Simple declarative sentences. Short paragraphs.
Contrarian angles backed by specific numbers and real examples.
No corporate speak. No "I'm excited to share." No emoji in body text.
Open with a hook that stops the scroll — contrarian claim, surprising number, or uncomfortable truth.
End with a payoff: uncomfortable truth → "worth it" resolution.

Structure

Hook (1-2 lines) — Contrarian claim or surprising stat
Setup (2-3 lines) — Establish credibility/context fast
Sections — Each follows: problem → what actually happened → fix/lesson
ASCII diagram — At least one per post (see below)
Uncomfortable truth — The insight most people avoid
Payoff — Was it worth it? Yes, and here's why.

ASCII Diagrams (MANDATORY)

Every post MUST include at least one ASCII diagram in a code block. These break up walls of text and make complex systems visual.

Use box-drawing characters:

┌─────────┐    ┌─────────┐    ┌─────────┐
│  Input  │───►│ Process │───►│ Output  │
└─────────┘    └─────────┘    └─────────┘

Track record

Benchmark

21 / 23

test cases passed, vs 5 / 23 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

evolution-foundation / evo-nexus

.claude/skills/social-x-longform/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/3/2026Version v1Bundled 2 files

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

X Long-Form Post Writer

Voice Rules

Structure

ASCII Diagrams (MANDATORY)

Track record

Benchmark

Adoption

SkillSafety

Source

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