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x-post

x-post is a skill for Claude Code, Codex from SpaceZephyr/writing-skills. It costs 130 tokens per session (3,506 once invoked), scanned A, original, no licence file.

A skill for rewriting long text, notes, ideas, or technical content into short posts for 即刻 or X, formerly known as Twitter. It is triggered by requests to write or adapt a post for those services.

In plain words
What is it for?
Creating or shortening posts for 即刻, X, or Twitter, including technical content.
Why use it?
It helps turn source material into a social-media post without requiring the user to rewrite it manually.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 5repo 6mo ago A scan 130 tokens no licence

Good fit Creating or shortening posts for 即刻, X, or Twitter, including technical content.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/spacezephyr/writing-skills/x-post
View source ↗ SpaceZephyr/writing-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add SpaceZephyr/writing-skills --skill x-post
Clone the repo
git clone --depth 1 https://github.com/SpaceZephyr/writing-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for x-post

README.md
[![agentmods](https://agentmods.dev/badge/skills/spacezephyr/writing-skills/x-post/github.svg)](https://agentmods.dev/skills/spacezephyr/writing-skills/x-post)
Your own site
<a href="https://agentmods.dev/skills/spacezephyr/writing-skills/x-post"><img src="https://agentmods.dev/badge/skills/spacezephyr/writing-skills/x-post/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for x-post

Your own site · 80×15
<a href="https://agentmods.dev/skills/spacezephyr/writing-skills/x-post"><img src="https://agentmods.dev/badge/skills/spacezephyr/writing-skills/x-post.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 130 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,506 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00130 $0.03506
Opus 5.5 $0.00052 $0.01402
Sonnet 5.5 $0.00026 $0.00701
Haiku 4.5 $0.00013 $0.00351

Measured 2mo ago against content hash 8f2e74d5ec4b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

x-post scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

x-post/SKILL.md · 220 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 220 lines · 130 tokens per session scan A 8f2e74d5ec4b

Subscribe to this mod's changes

x-post is a skill published in the GitHub repository SpaceZephyr/writing-skills (5 stars, last pushed 6mo ago), with no licence file. It adds 130 tokens to every session and 3,506 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Marketing and SEOWriting and docs
Related

x-post compared with skills from other repositories

x-post next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
x-postSpaceZephyr/writing-skillsSkill56mo agononeA130Claude Code, Codex
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79kyesterdayMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill100kyesterdayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill314k4d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code