What platforms does Crosspost support?

Crosspost supports content distribution across X, LinkedIn, Threads, and Bluesky, adapting the message for each platform's audience.

How does Crosspost ensure content uniqueness?

Crosspost follows strict guidelines to prevent identical content from being published across platforms, ensuring each post is tailored to its specific audience.

Can I use Crosspost for different types of content?

Yes, Crosspost can be used for various content types, including updates, launches, articles, and essays, adapting them for each platform accordingly.

What if I want to change my author voice?

You can run the `brand-voice` function to capture a new voice fingerprint if you want to modify your author voice for a specific campaign.

Is there a limit to the number of platforms I can post to at once?

While Crosspost can adapt content for multiple platforms, it is best to stagger posts for optimal engagement and timing, as per the user’s request.

Crosspost

Name: Crosspost
Availability: InStock
Author: affaan-m

Free

Effortlessly share tailored content across social platforms.

by affaan-m239.3k stars on affaan-m/ecc

Updated Aug 10, 2026

Get this skill

Free · Opens the source repo

What Crosspost does

Crosspost is a skill designed for users who want to effectively distribute content across multiple social media platforms without sacrificing the uniqueness of each post. By adapting content to fit the specific requirements and audiences of platforms like X, LinkedIn, Threads, and Bluesky, Crosspost ensures that each version maintains the author’s voice while adhering to platform constraints. This skill is particularly useful for marketers, content creators, and businesses looking to maximize their reach without diluting their message.

The workflow begins with selecting the strongest primary version of the content, whether it’s a post from X, an article, or a launch note. Users can leverage the content-engine to shape their voice if needed. Once the primary version is established, the skill captures the author’s voice fingerprint, ensuring consistency across all adaptations. Each platform has tailored guidelines to ensure the content is appropriate and engaging for its audience. For example, LinkedIn posts require context for broader audiences, while X posts are more concise and direct.

Crosspost emphasizes the importance of originality by preventing identical copies from being published across platforms. This is achieved by following core rules that focus on preserving the author’s voice and adapting content to fit each platform's unique style. The skill also includes a quality gate to ensure that all versions read as if they were written by the same author and that no unnecessary filler is included. This meticulous approach allows users to maintain their brand identity while effectively communicating their message across various channels.

In summary, Crosspost is an essential tool for anyone looking to streamline their content distribution process across social media platforms. It is ideal for those who frequently share updates, launches, or insights and want to ensure that each post resonates with its intended audience while retaining the author’s original intent.

When to use it

Use this skill when you need to share the same core message across different social media platforms while maintaining platform-specific nuances.

When not to use it

This skill may not be suitable for users who want to publish identical content across platforms or those who do not require platform-specific adaptations.

What you can build with it

Launching a New Product

When launching a new product, use Crosspost to create tailored announcements for each platform, ensuring the message resonates with the specific audience.

Sharing Insights from a Conference

After attending a conference, adapt your key takeaways into unique posts for LinkedIn, X, and Threads to engage with different professional networks.

Promoting a Blog Post

Promote a new blog post by creating concise summaries for X and Threads, while providing a more detailed context for LinkedIn readers.

How to install Crosspost

View source

1. Install with the skills CLI

npx skills add affaan-m/ecc/crosspost --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by affaan-m

Crosspost

Distribute content across platforms without turning it into the same fake post in four costumes.

When to Activate

the user wants to publish the same underlying idea across multiple platforms
a launch, update, release, or essay needs platform-specific versions
the user says "crosspost", "post this everywhere", or "adapt this for X and LinkedIn"

Core Rules

Do not publish identical copy across platforms.
Preserve the author's voice across platforms.
Adapt for constraints, not stereotypes.
One post should still be about one thing.
Do not invent a CTA, question, or moral if the source did not earn one.

Workflow

Step 1: Start with the Primary Version

Pick the strongest source version first:

the original X post
the original article
the launch note
the thread
the memo or changelog

Use content-engine first if the source still needs voice shaping.

Step 2: Capture the Voice Fingerprint

Run brand-voice first if the source voice is not already captured in the current session.

Reuse the resulting VOICE PROFILE directly. Do not build a second ad hoc voice checklist here unless the user explicitly wants a fresh override for this campaign.

Step 3: Adapt by Platform Constraint

X

keep it compressed
lead with the sharpest claim or artifact
use a thread only when a single post would collapse the argument
avoid hashtags and generic filler

add only the context needed for people outside the niche
do not turn it into a fake founder-reflection post
do not add a closing question just because it is LinkedIn
do not force a polished "professional tone" if the author is naturally sharper

Threads

keep it readable and direct
do not write fake hyper-casual creator copy
do not paste the LinkedIn version and shorten it

Bluesky

keep it concise
preserve the author's cadence
do not rely on hashtags or feed-gaming language

Posting Order

Default:

post the strongest native version first
adapt for the secondary platforms
stagger timing only if the user wants sequencing help

Do not add cross-platform references unless useful. Most of the time, the post should stand on its own.

Banned Patterns

Delete and rewrite any of these:

"Excited to share"
"Here's what I learned"
"What do you think?"
"link in bio" unless that is literally true
generic "professional takeaway" paragraphs that were not in the source

Output Format

Return:

the primary platform version
adapted variants for each requested platform
a short note on what changed and why
any publishing constraint the user still needs to resolve

Quality Gate

Before delivering:

each version reads like the same author under different constraints
no platform version feels padded or sanitized
no copy is duplicated verbatim across platforms
any extra context added for LinkedIn or newsletter use is actually necessary

Related Skills

brand-voice for reusable source-derived voice capture
content-engine for voice capture and source shaping
x-api for X publishing workflows

Frequently asked questions about Crosspost

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