How to Post Directly to Social Media From Grokbot
Grokbot cannot publish to social media on its own. It has no access to your accounts. With the post bridge server installed it can: text, images and video to 10 platforms, published now or scheduled, from a normal chat. This guide is the whole setup and the first three posts, with the exact prompts, the rules each platform enforces, and the fixes for the things that go wrong.
About 10 minutes. Nothing to install. Updated September 2026.
Pasting the brief into Grokbot gives it the connect steps, tools and platform rules. Agents can also read/grokbot/agent.md directly.
Connect your social accounts to post bridge
2 min, onceCreate an account, then connect each profile from the dashboard. Every platform uses its official login, so you will see the normal Instagram, TikTok or Google permission screen. This is the only place your platforms are ever authorised. Grokbot talks to post bridge, never to the platforms.
- Connect everything you might post to now. Adding an account later takes a minute and needs nothing redone on the Grokbot side.
- Instagram needs a professional account (business or creator). Personal accounts cannot be posted to by any tool.
- Facebook connects Pages, not personal profiles. YouTube connects the channel you pick in the Google screen.
Tell Grokbot to connect to post bridge
1 min, onceNo settings screen. Paste this into Grokbot:
Prompt
"Connect to the post bridge social media scheduler MCP server at https://www.post-bridge.com/api/mcp/mcp"Grokbot registers the server, opens your browser on a post bridge screen asking you to allow access, and after you approve it reports that post bridge is connected with all its tools.
Mockup. Real capture coming.
Using Grok on grok.com instead of Grokbot?
Grok's connector only takes a URL with no sign-in flow, so it needs an API key in the URL: https://www.post-bridge.com/api/mcp/mcp?key=YOUR_API_KEY. Keys come from your dashboard's API Keys page. Treat that URL like a password.
Check Grokbot can see your accounts
30 secStart a new chat and ask for your accounts. This does two things: it confirms the server is live in this chat, and it gives you the exact account names to use in every later prompt.
Prompt
"List my connected social accounts in post bridge."You get a table of platform and handle. If you run more than one account on a platform, copy the handle you want into your prompts, for example "my @jackfriks Instagram". Otherwise Grokbot will stop and ask which one, every time.
Schedule a text post
1 minThe simplest case. Nothing to upload, so Grokbot calls the scheduling tool straight away.
Prompt
"Schedule this to my X and Threads accounts for tomorrow at 9am: "Shipped the thing. Three months of nights and weekends, live today.""What happens
- Grokbot may ask you to confirm the first write. Confirm it.
- It creates one post with your caption unchanged, on both accounts, scheduled for 9am tomorrow in your account timezone.
- At 9am post bridge publishes to both and records a result per platform, with the live URL or the real error.
Mockup. Real capture coming.
Say "now" instead of a time to publish immediately. Say "save as a draft" to review it in the dashboard first.
Want Grokbot to write the caption? Give it the brief and ask for drafts. Read them, then tell it which to schedule.
Post an image, or a carousel
1 minImages need to reach post bridge first. Give Grokbot a public URL that points straight at the file and it uploads it for you. For files on your device, use the upload link in step 6, which takes a whole carousel in one drop.
Prompt
"Upload the image at https://example.com/launch.png and schedule it to Instagram and LinkedIn for Friday at noon with the caption "Launch day." Add #buildinpublic as the first comment on Instagram."What happens
- Grokbot downloads the image into your post bridge media library and gets a media id back.
- It writes the caption exactly as given, sets the Instagram first comment, and schedules for Friday at noon.
- At noon on Friday, Instagram and LinkedIn each publish through their official API and report back separately.
Mockup. Real capture coming.
Carousels: give several URLs, or upload several files through the link in step 6, and ask for one post. Instagram takes up to 10, LinkedIn 20, Pinterest 5 with matching aspect ratios.
JPEG and PNG only. iPhone HEIC photos need exporting first.
Post a video from your phone or laptop
2 minVideo is the case every other guide skips. Files attached in a Grokbot chat do not reach the server, and a video on your phone or laptop has no public URL to upload from. So post bridge gives Grokbot a way to ask you for the file directly.
Prompt
"I have a video on my laptop I want to post. Get me an upload link, then once it's in my library schedule it to TikTok, Instagram Reels and YouTube Shorts for tomorrow at 9am with captions tuned to each platform."What happens
- Grokbot requests an upload link and sends it to you. It works for 24 hours and takes files up to 500MB.
- You open the link in any browser, on the phone the video is on if you like, and drop the file in. It lands in your post bridge media library.
- Tell Grokbot it is uploaded. It finds the newest file, writes three captions, and schedules the post for 9am tomorrow.
- At 9am post bridge publishes to all three platforms and records the result of each.
Shown in Claude. Same server, same prompt in Grokbot.
The file goes from your device straight to storage. Nothing is re-uploaded through Grokbot, and formats are converted where a platform needs it.
Drop several files at once for a carousel, then tell Grokbot how many you uploaded so it attaches all of them.
Want to add a trending sound on TikTok? Ask for a TikTok draft and it lands in your TikTok inbox to finish there.
Confirm what is scheduled and what published
30 secTwo prompts worth using every time, because they are the difference between trusting the tool and knowing.
Prompt
"What do I have scheduled this week, and on which accounts?"Prompt
"Did my last post publish everywhere? Show the result per platform."Scheduled posts also appear in the post bridge calendar, where you can edit, move or delete them by hand. A post that failed on one platform still published on the others, and the per-platform result carries the actual error from that platform.
Platform rules Grokbot will run into
These come from the platforms, not from post bridge. Grokbot knows them and will tell you when a post cannot go somewhere, but it is faster to know before you ask.
| Platform | Media | Worth knowing |
|---|---|---|
| X (Twitter) | Text, up to 4 images or 1 video | Links are stripped from the tweet body. Put the link in the first comment instead. |
| 1 to 10 images or videos required | Reels, feed posts and Stories. First comment supported. A Story is exactly one file. Needs a professional (business or creator) account. | |
| TikTok | 1 video, or one or more images | Ask for a TikTok draft to finish in the app and add a sound before it goes live. |
| YouTube | Exactly 1 video required | Give it a title. Shorts are just vertical videos. |
| Text, up to 20 images, 1 video, or 1 PDF | A PDF becomes a native document carousel. No first comment. | |
| Text, images or video | Page posts and Page Stories. First comment supported. | |
| Threads | Text, up to 20 images or videos | First comment supported. |
| 1 to 5 images or 1 video required | Carousel images must share the same aspect ratio. Add a title and a destination link. | |
| Bluesky | Text, up to 4 images or 1 video | Plain and simple. |
| Google Business | Text or a single image | No video. |
Prompt cheat sheet
Plain sentences work. These are the shapes that map cleanly onto what the server can do.
| You want to | Say |
|---|---|
| See your accounts | "List my connected social accounts." |
| Publish right now | "Post this to my X account now: [text]" |
| Schedule for a time | "Schedule this to Instagram and LinkedIn for Friday at noon: [text]" |
| Use your queue | "Add this to my next free queue slot on Threads: [text]" |
| Draft for review | "Write three versions of this for X, LinkedIn and Threads and save them as drafts. Do not publish." |
| Image from a URL | "Upload the image at [URL] and post it to Instagram with the caption [text]" |
| Anything on your device | "Get me an upload link. I have 8 photos for a carousel." |
| Link on X | "Post this to X and put the link in the first comment: [text] [URL]" |
| TikTok with a sound | "Send this video to my TikTok drafts so I can add a sound before it goes out." |
| Check the queue | "What do I have scheduled this week, and on which accounts?" |
| Check a result | "Did my last post publish everywhere? Show the result per platform." |
| Read analytics | "Which of my posts got the most views in the last 30 days?" |
Good habit: drafts first, review in the dashboard, then schedule. Grokbot writes, you approve, nothing publishes behind your back.
Troubleshooting
Grokbot says it cannot post, or does not mention post bridge
The server is not registered yet, or the sign-in was never approved. Paste the connect prompt again, approve access in the browser window, and wait for Grokbot to confirm it sees the tools.
It asks which account to use
You have more than one account on that platform. Name the handle in the prompt, for example "my @jackfriks Instagram", and it stops asking.
The image or video URL did not work
The URL has to be public and point straight at the file, not a page that shows the file. Google Drive and Dropbox share pages will not work. For anything private or on your device, ask for an upload link instead.
HEIC photos from an iPhone are rejected
post bridge takes JPEG and PNG for images. Export as JPEG first, or drop the file in the upload link page, which accepts the same formats.
The post failed on one platform but not the others
Each platform publishes on its own, so one failing does not stop the rest. Ask Grokbot for the result per platform. It gets the real error back, for example a video that is too long for a Story, and can retry once you fix the cause.
It scheduled for the wrong hour
Times are read in the timezone saved on your post bridge account. Say the timezone in the prompt if you are travelling, or set it once in your dashboard settings.
Still stuck? Support is a human and usually answers within the hour.
Not using Grokbot?
ChatGPT
Same server, listed as a plugin inside ChatGPT. Same guide.
Claude
Same server, one click from the Claude directory. Same guide.
Gemini
One config block in Gemini CLI, OAuth on first use. Same guide.
Claude Code
One command adds the MCP server, then post from the terminal.
Cursor and other MCP clients
Setup steps per client for the same MCP URL.
OpenClaw
Skill and plugin for OpenClaw agents that post on a schedule without you.
CLI for any agent
postbridge-cli wraps the same endpoints for shell scripts and agent frameworks.
REST API
Full API reference, for pipelines and cron jobs instead of chats.
And if you post a couple of times a week, drafting in Grokbot and pasting into a scheduler is honestly fine. The server pays off when volume, multiple platforms or per-platform captions make you the copy-paste bottleneck.
Give this guide to Grokbot
Copies a short brief: how to connect if it has not yet, the tools, platform rules and what to do with common requests. Paste it into the chat.
Frequently asked questions
Can Grokbot post to social media by itself?
No. Grokbot has no access to your social accounts on its own; it can only write content. With the post bridge server installed, Grokbot can create, schedule and publish posts to 10 platforms using accounts you connected via OAuth, upload media, and read your analytics.
How do I connect post bridge to Grokbot?
Paste a prompt telling Grokbot to connect to the post bridge social media scheduler MCP server at https://www.post-bridge.com/api/mcp/mcp. It opens your browser on a post bridge screen; approve access and it reports the tools are available. No connector settings, no API key.
Can Grokbot post to Instagram and TikTok?
Yes, through the server. post bridge publishes to Instagram, TikTok, YouTube, X, Facebook, LinkedIn, Pinterest, Threads, Bluesky and Google Business Profile using each platform's official API. Nothing is scraped or automated through a browser.
Can I attach a video from my phone or laptop in Grokbot and have it posted?
Not by attaching it to the chat. Files attached in a Grokbot chat do not reach the server. Instead, ask for an upload link: Grokbot sends you a one-time link, you drop the file or files in from any browser, and they appear in your post bridge media library ready to post. It works for any size of video, and for a whole carousel of images at once.
Can Grokbot schedule posts instead of publishing immediately?
Yes. Ask for a specific time, ask it to use your next free queue slot, or ask for drafts so you can review everything in the dashboard before it goes out.
Will this auto-generate and publish AI slop?
Only if you ask it to. The server is the hands, not the brain. It posts your videos, your images and your captions, and if you want Grokbot to write, ask for drafts first and approve them yourself.
Does the same setup work in ChatGPT, Claude and Cursor?
Yes. The server is a standard MCP server, so the identical URL works in ChatGPT, Claude, Cursor and any other MCP client. There is also a REST API and a CLI over the same endpoints for scripts.
What does it cost?
post bridge plans start at $29/mo for 5 connected accounts with unlimited posts, and MCP access is included on every plan. There is a 7-day free trial.
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