Can I use a key instead of the browser?

Yes: grok mcp add -s user postemi https://mcp.postemi.com/mcp -H "Authorization: Bearer YOUR_MCP_KEY", with a key from the Automations → Developers page.

Which Postemi plans work with Grok Build?

MCP, the CLI and the REST API are part of the Pro, Creator and Team plans. Every plan starts with a 7-day free trial.

Does Postemi write the posts, or does Grok Build?

Grok Build writes them. Postemi has no built-in AI writer, on purpose: it connects your accounts, schedules and publishes.

Can Grok Build publish without asking me?

It can, if you tell it to post now. Ask for drafts or scheduled posts instead, and check them in the Postemi calendar, where you can edit, move or delete them before they go out.

Grok Build + Postemi

Schedule Social Media Posts from Grok Build

Add the Postemi MCP server with grok mcp add
Grok Build writes the release post next to your code
20 platforms, including X, LinkedIn, Instagram and TikTok

Add to Grok Build Start your free trial

Setup

How do I connect Postemi to Grok Build?

Grok Build keeps MCP servers in ~/.grok/config.toml. One command adds Postemi.

1Connectabout a minute

Add Postemi to Grok Build

Use the user scope to have it in every project.

terminal

grok mcp add -s user postemi https://mcp.postemi.com/mcp

2Asklive in Postemi

Then just ask Grok Build

Once connected, Grok Build calls the Postemi tools. Scheduled posts go out on time, even after you close the chat.

Schedule a post to X and LinkedIn for tomorrow at 9:00 announcing our new feature. Keep it short.

Done. I found your X and LinkedIn accounts and scheduled both posts for 9:00 tomorrow. Want me to save a version for Instagram as a draft too?

via Postemi

Also try

List my connected channels
Plan a week of posts about our launch
Save this as a draft instead

1
Connect your social accounts in Postemi
Sign in to Postemi and connect the accounts Grok Build may post to.
2
Add the server
Use the user scope to have it in every project.
3
Sign in
In Grok Build, open /mcps, select postemi and authenticate. Your browser opens Postemi's sign-in page.
4
Ask Grok Build
Ask it to post about the change you just made.

One connection

One Grok Build connection powers every channel you run

Connect your accounts in Postemi once. From then on Grok Build can post to any of them, 20 platforms today, without a separate setup per network.

Each account keeps its own rules and character limit, and Grok Build reads them first.
One request can go to several platforms, with the text adapted to each.
New accounts you connect in Postemi show up for Grok Build at once.

Ways to connect

MCP server or the CLI?

Both reach the same Postemi account.

	MCP serverRecommended	The Postemi CLITerminal
Setup	grok mcp add, then sign in from /mcps	npm install -g postemi, then postemi auth:login
Needs	Grok Build	A shell; an API key in CI
Sign-in	Your Postemi account in the browser, no key, or -H with an MCP key	Browser device sign-in, or POSTEMI_API_KEY
Best for	Most Grok Build users	Scripts, CI and analytics

MCP serverRecommended

Setup: grok mcp add, then sign in from /mcps
Needs: Grok Build
Sign-in: Your Postemi account in the browser, no key, or -H with an MCP key
Best for: Most Grok Build users

The Postemi CLITerminal

Setup: npm install -g postemi, then postemi auth:login
Needs: A shell; an API key in CI
Sign-in: Browser device sign-in, or POSTEMI_API_KEY
Best for: Scripts, CI and analytics

What it can do

What can Grok Build do with Postemi?

Grok Build gets the same Postemi tools in every workspace it connects to. It writes; Postemi schedules and publishes.

Draft, schedule or publish

Grok Build creates a post as a draft, schedules it for a time you name, or publishes it right away. Ask for a draft when you want to check it first.

Preview per account

Before it creates anything, Grok Build can show what would go out on each account: the text, the media and the character count.

Reads your calendar

Grok Build sees what is already scheduled, in your time zone, so it can find a free slot or move a post.

Knows each platform's rules

Postemi tells Grok Build the character limit and the options of every connected account before it writes.

Images and video

Grok Build adds media from a link, or gives you an upload link for a file on your own computer.

Workspaces and client groups

If you manage several brands, Grok Build lists your workspaces and client groups and works in the one you pick.

The MCP server

What is the Postemi MCP?

MCP (Model Context Protocol) is an open standard that lets an AI agent use outside tools. Postemi runs a hosted MCP server at https://mcp.postemi.com/mcp. Grok Build connects to it, and from then on it can list your channels, read your calendar and create posts in your Postemi account.

The server runs on Postemi's side, so there is nothing to install for it. You sign in to Postemi in the browser, or use an MCP key, and that decides the workspace Grok Build works in. Your social accounts stay connected in Postemi itself: Grok Build never sees their passwords.

Postemi has no built-in AI writer, on purpose. Grok Build writes the posts, Postemi schedules and publishes them.

How Grok Build uses Postemi

Once Postemi is connected, Grok Build finds the tools by itself and calls them when you ask for a post.

Reads your connected accounts and each one's rules
Checks the calendar and your time zone before it picks a time
Can show a preview per account before it creates a post
Saves a draft, schedules, or publishes now, as you asked
Adds images and video from a link, or from an upload link you open

Server URL

https://mcp.postemi.com/mcp

~/.grok/config.toml

[mcp_servers.postemi]
url = "https://mcp.postemi.com/mcp"
 
# Tools it gets:
# list_integrations      connected accounts
# get_integration_schema  rules and limits
# list_posts              the calendar
# preview_post            what would go out
# create_post             draft, schedule, publish
# delete_post             remove an unpublished post
# upload_media_from_url   add an image or video
# create_upload_link      upload from your computer

Your AI agent can run your social calendar

Grok Build schedules your next post

create_post

ChatGPT, Claude, Cursor and Codex sign in with your Postemi account. Manus, DeepSeek Harness and NanoClaw use an MCP key.

MCP setup Tool reference Read the docs

Example prompts

What can you ask Grok Build to post?

Anything you would ask a teammate: name the platforms, the time and the tone, and Grok Build handles the rest.

Release

Release notes to posts

Read CHANGELOG.md and write a post about the latest release. Schedule it on X and LinkedIn for tomorrow at 9:00, as drafts.

Thread

A thread on X

Turn this blog post into a five part thread on X and schedule it for Tuesday at 17:00.

Announcement

Ship a launch post

Write a short announcement for our new product and schedule it on X, LinkedIn and Instagram for Thursday at 9:00. Adapt the length to each platform.

Content calendar

Plan a week

Look at my Postemi calendar for next week and suggest three LinkedIn posts for the empty days. Save them as drafts.

Platforms

Which platforms can Grok Build post to?

Any account you connect in Postemi: 20 platforms today. Connect them once, then post to any of them by asking Grok Build.

Good to know

Is Grok Build the same as Grok Bot?

No. Grok Build works in your repository; Grok Bot works on tasks you message it about. Each adds the Postemi server in its own way.

	Grok Build	Grok Bot
What it is	xAI's terminal coding agent	A persistent assistant with its own cloud computer
How Postemi connects	grok mcp add	You ask it in chat to add the MCP server
Best for	Release posts from your code	Routines you hand off

Grok Build

What it is: xAI's terminal coding agent
How Postemi connects: grok mcp add
Best for: Release posts from your code

Grok Bot

What it is: A persistent assistant with its own cloud computer
How Postemi connects: You ask it in chat to add the MCP server
Best for: Routines you hand off

Grok Bot and Postemi

AI agents

Frequently asked questions about Grok Build and Postemi

Not yet. Use the MCP server; it gives the same tools.

Announce your releases from Grok Build

Add Postemi with one command and ask for your first post.

Add to Grok Build

Get started today

Grow your audience,not your workload

Postemi brings your social accounts together in one calendar, so you can spend more time on your leads and your business. Don't let managing your accounts take up ten hours a week.

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