echoia®
Echoia

Connect Grok to your social media accounts

xAI offers MCP in two places: custom connectors on grok.com, and Grok Build, its agent for the terminal. Grok Build sends Echoia's key the standard way and works today. Here is the setup, and where grok.com stands.

Works, with limits
Works onGrok Build, on a paid Grok plan
Connects withKey in a header
Setup timeAbout 3 minutes

Works today in Grok Build. Not on grok.com yet: its custom connectors expect a sign-in flow that Echoia does not offer.

What you can ask Grok

“What are people replying to my latest X post, and what do they want?
“Turn this thread into a LinkedIn post and schedule it for Monday at 8am.
“Compare my X and Threads engagement over the last two weeks.

Grok gets six tools from Echoia (accounts, posts, stats, creating a post, reading comments, replying) across Instagram, Facebook, TikTok, YouTube, X, LinkedIn, Threads, Bluesky, Pinterest and Google Business, limited to what your key allows.

Before you start

Grok Build, installed and signed in. It requires a paid Grok subscription: check xAI's current plans.
An Echoia key. To work with X, your X account must be connected in Echoia, which takes a paid Echoia plan.

STEP 1 OF 2

Create your Echoia key

Grok connects with a key you create and can revoke at any time. It takes a minute.

  1. 1
    Open the Developers settings

    Sign in to Echoia, open Settings, then Developers.

  2. 2
    Create a key and choose what it may do

    Name it after the assistant so you recognise it later, and tick its permissions (explained further down). If you have several workspaces, choose which ones it can reach.

  3. 3
    Copy the key now

    It starts with eko_ and is shown only once: Echoia keeps only a fingerprint of it. If you lose it, revoke it and create a new one.

STEP 2 OF 2

Connect Grok

Grok Build

For xAI's agent in the terminal.

  1. 1
    Store your key

    Put your key in the ECHOIA_API_KEY environment variable, for example in your shell profile. Grok Build reads it when it connects, so the key is never written in its config.

    ~/.bashrc or ~/.zshrc
    export ECHOIA_API_KEY="eko_your_key"
  2. 2
    Add the server

    Run this command once. The single quotes matter: they keep your shell from replacing the variable, so Grok Build stores the reference and not the key itself.

    Terminal
    grok mcp add --transport http echoia https://mcp.echoia.io/mcp \
  --header 'Authorization: Bearer ${ECHOIA_API_KEY}'
  3. 3
    Check the connection

    Run grok mcp doctor echoia, which tests the connection and reports what is wrong if anything is. Inside a session, /mcps shows each server's status.

    Terminal
    grok mcp doctor echoia

Which permissions to give Grok

Read

Accounts, posts, stats and comments. Looks at everything, changes nothing.

Write

Drafts, scheduled posts and media uploads. A scheduled post goes out at its time.

Engage

Replies to comments in public, as your account.

Publish

Posts immediately, with no window to change your mind.

Our advice for Grok: Start with Read and Write. Add Engage once you have watched Grok draft a few replies: answering a customer in public is the action you will most want to check.

Limits worth knowing

grok.com is not supported yet. Its custom connectors, at grok.com/connectors, are built around an OAuth sign-in in which you approve the connection on the server's side. Echoia authenticates with keys, so we cannot promise that connection works. When we add sign-in, this page will say so.
X is not available on Echoia's free plan. Grok can still work with your other connected accounts there.

Questions

Can Grok post to X through Echoia?

Yes, if your X account is connected in Echoia and the key has the Write scope for drafts and scheduling, or Publish to post on the spot. X is one of the ten platforms Echoia publishes to.

What about the xAI API?

Developers building on the xAI API can attach remote MCP servers to their requests. Use the Echoia address with your key sent as an Authorization header, as with any client that supports headers.

How do I cut Grok's access?

Revoke the key in Echoia under Settings, Developers. It stops working on the next request, whatever Grok is doing at the time.

Ready to try it with Grok?

Create a free Echoia account, connect your social accounts, and your key is one click away. No card needed.