Repurpose Your Reel to 4 Platforms With One Prompt (Zernio in Claude Cowork), Quentin IA Marketing

You shoot a reel. It goes out on Instagram. And it stops there, because reshaping it for TikTok, YouTube Shorts, X, and LinkedIn costs you an hour you do not have.

That hour is gone. You plug a connector into Claude, you write three sentences, and all four versions ship with a caption written for each platform.

No API key to paste, no file to install, not a single line of code. One connector and one prompt.

Here is the exact setup, the exact prompt, and the one call that matters once it runs.

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✅What you need before you start

A Claude account. Custom connectors exist on the Free, Pro, Max, Team, and Enterprise plans, and work in Claude, in Cowork, and in Claude for Mac. On Free you are limited to one custom connector.

A Zernio account, with your networks already connected on their side. That is where publishing permission lives, not in Claude.

A reel already published on Instagram. That is your source. The connector fetches the video, you upload nothing.

Why a connector beats a scheduling tool

A classic scheduling tool makes you fill in a form per platform. You drop your video, you write your caption, you tick the platforms, you repeat. It automates publishing, not rewriting, and rewriting is exactly the part that eats the time.

A connector changes the nature of the work. Claude does not fill a form for you: it reads your video, understands what you are saying, and writes four different texts before publishing anything. The plumbing to the networks is Zernio's job, through a server exposing 496 tools across more than 15 platforms.

The difference in one line

A scheduler distributes what you wrote. A connector writes, then distributes.

Plug in the Zernio connector

🔌 claude.ai/customize/connectors

This is a one time step. Give it two minutes.

⚙️The exact path

In Claude, go to Customize, then Connectors.

Click the +, then Add custom connector.

Paste the server address: https://mcp.zernio.com/mcp, then click Add.

That last point deserves emphasis, because it is what makes this setup reachable for someone who has never touched an API. You handle no secret, you store nothing in a file, and you cannot accidentally paste a key into a conversation.

Once the connector is added, you switch it on per conversation with the + button in the composer, under Connectors. Check that it is on before you run your prompt, otherwise Claude will tell you it cannot publish.

Worth knowing

Connectors do not sync across surfaces. Plugged into Claude, it will not show up elsewhere on its own. Add it where you actually work.

The prompt to copy

✍️ 3 sentences

This is the whole system. Three sentences, each with a precise job.

Take this Instagram reel [reel URL] and repurpose it to TikTok,
YouTube Shorts, X and LinkedIn with the Zernio connector.

Rewrite the caption natively for each platform instead of reusing the
Instagram one: LinkedIn gets a longer hook-first framing, X gets one
punchy post within the character limit, YouTube Shorts gets a searchable
title plus description, TikTok stays conversational, and "link in bio"
never leaves Instagram.

Show me the four drafts before publishing anything.

🧠What each sentence does

The first sets the source and the targets. You give the reel URL, not a file. The connector fetches the video on its own.

The second does 90% of the work. Without it you get the same caption copied four times, which is exactly the lazy repurposing everyone recognizes on sight. It tells Claude how each network reads.

The third keeps you in the loop. The connector holds write access to your accounts. This sentence is what separates a proofread from a public accident.

Why the second sentence reads the way it does: every instruction maps to a real difference in how people read. LinkedIn tolerates length but truncates after a few lines, so the promise goes first. X enforces a hard limit, so one angle per post. YouTube Shorts is a search engine, so the title carries the words people type. TikTok forgives a spoken register, not a corporate tone. And "link in bio" means nothing anywhere but Instagram.

The habit to build

When you keep correcting Claude on the same points, stop repeating them in the prompt. Those recurring corrections are the raw material of a skill, and a skill triggers on its own.

Review, or schedule

⚖️ the trade-off

Once the system is in place, you have two ways to end the prompt, and they do not carry the same risk.

🔀The two endings

The reviewed version. You close with "Show me the four drafts before publishing anything". Claude hands you the four texts, you correct, you approve, it ships.

The scheduled version. You swap the last sentence for "Schedule the posts for tomorrow 6pm Dubai time". The connector handles scheduling, so you can prepare a week in one session.

The second is faster, and it becomes tempting once the system has run cleanly three times in a row. Keep in mind what you are trading: you are handing an agent write access to four public accounts, with no proofread, on text it wrote alone from a transcript.

The reasonable middle ground is to review until you have a skill encoding your tone, and to schedule directly only on formats you have already validated ten times. A bad post on four networks at 6pm is not fixed by deleting, it is fixed by explaining.

Worth remembering

Direct scheduling is earned. It comes after the system has proven itself, not on the day you plug it in.

If it does not work the first time

Three causes cover almost every failure, and none of them is a prompt problem.

🛠️The three checks

The connector is not enabled in this conversation. Adding it is global, enabling it is per conversation. Open the + in the composer, under Connectors, and check that it is ticked.

The network is not connected on the Zernio side. Claude can only publish where your Zernio account is already authorized. A network missing from your Zernio dashboard receives nothing, even if the prompt names it.

The reel is not reachable. A private account, a deleted post, or a story URL instead of a reel, and the source cannot be fetched. Test the URL in a private browsing window.

On available networks, you are not limited to the four in the prompt. Zernio covers Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads, Pinterest, Reddit, Bluesky, WhatsApp, Telegram, Discord, Snapchat, and Google Business. Adding a destination means adding a word to the first sentence.

What actually changes

⏱️

Time

An hour of reshaping per video drops to a minute of proofreading. At three videos a week, you get half a day back every month.

🎯

Quality

Four texts written for four kinds of reading, instead of one Instagram caption pasted everywhere. That is what keeps a LinkedIn post from looking like a stray Instagram post.

🔑

Technical barrier

No API key, no file, no code. The only prerequisite is having connected your networks on the Zernio side.

📈

Reach

A video that only ships on one network leaves the rest of its audience aside. The cost of shipping everywhere just dropped to nearly zero.

One closing note, true beyond this case. This setup does not replace your judgment, it removes the chore that kept you from exercising it. Put the time you win back on formatting into the video itself: it is the one part of the system nobody can automate for you.

The only rule that matters