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crosspost

crosspost is a skill for Codex from YuxiaoWang-520/harness-craft. It costs 49 tokens per session (1,237 once invoked), scanned B, original, no licence file.

A guide for adapting content for X, LinkedIn, Threads, and Bluesky instead of copying the same post everywhere.

In plain words
What is it for?
Use it when distributing content across several of these platforms.
Why use it?
It removes the work of rewriting one message for different social networks.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 73repo 7mo ago B scan 49 tokens no licence

Good fit Use it when distributing content across several of these platforms.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yuxiaowang-520/harness-craft/crosspost
View source ↗ YuxiaoWang-520/harness-craft
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 YuxiaoWang-520/harness-craft --skill crosspost
Clone the repo
git clone --depth 1 https://github.com/YuxiaoWang-520/harness-craft

Made for: 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 crosspost

README.md
[![agentmods](https://agentmods.dev/badge/skills/yuxiaowang-520/harness-craft/crosspost/github.svg)](https://agentmods.dev/skills/yuxiaowang-520/harness-craft/crosspost)
Your own site
<a href="https://agentmods.dev/skills/yuxiaowang-520/harness-craft/crosspost"><img src="https://agentmods.dev/badge/skills/yuxiaowang-520/harness-craft/crosspost/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 crosspost

Your own site · 80×15
<a href="https://agentmods.dev/skills/yuxiaowang-520/harness-craft/crosspost"><img src="https://agentmods.dev/badge/skills/yuxiaowang-520/harness-craft/crosspost.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,237 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00049 $0.01237
Opus 5.5 $0.00020 $0.00495
Sonnet 5.5 $0.00010 $0.00247
Haiku 4.5 $0.00005 $0.00124

Measured 2mo ago against content hash c8d59c016df9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

crosspost scanned grade B with 2 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

resp = requests.post( "https://api.postbridge.io/v1/posts",

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

resp = requests.post(
skills/crosspost/SKILL.md · 193 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

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 193 lines · 49 tokens per session scan B c8d59c016df9

Subscribe to this mod's changes

crosspost is a skill published in the GitHub repository YuxiaoWang-520/harness-craft (73 stars, last pushed 7mo ago), with no licence file. It adds 49 tokens to every session and 1,237 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Marketing and SEOWriting and docs
Related

crosspost compared with skills from other repositories

crosspost next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
crosspostYuxiaoWang-520/harness-craftSkill737mo agononeB49Codex
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k2d agoMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill100ktodayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill315k5d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143kyesterdayMITA95Claude Code