Claude + PostAxis

Schedule social media posts with Claude

Claude is great at writing in your voice. Connect PostAxis and it can also post: plan a week of content, adapt one idea for every network and schedule it, all from a conversation.

Custom connector with OAuth sign-in
Works in Claude web, desktop and mobile
Plan, schedule, edit and publish by chat

Open Claude connectors Start for $0

Set up Claude with PostAxis

Plug PostAxis into Claude once, then talk to it like you would to whoever runs your accounts. Every click is in the full guide below.

Plug in under a minute

Step 1 of 2

Add PostAxis as a custom connector

Paste the PostAxis MCP URL under Settings → Connectors, sign in once, and PostAxis works in Claude on the web, desktop and mobile.

PostAxis account
A connected social account
Claude installed

MCP server URL

https://postaxis.io/api/mcp

Once added, PostAxis is available in Claude on the web, the desktop apps and the mobile apps. A one-click listing in the Claude connector directory is in review.

Talk

Step 2 of 2

Then tell Claude what you need

Claude picks the PostAxis tools it needs. Scheduled posts go out on time whether or not the chat is still open.

Try asking

Which accounts can you post to?
What goes out this week?
Keep that one as a draft

Turn these notes into three LinkedIn posts and spread them over next week at 9:00 Asia/Tashkent.

Scheduled 3 LinkedIn posts for Monday, Wednesday and Friday at 9:00 (Asia/Tashkent). All passed LinkedIn’s rules. Want Threads versions too?

via PostAxis

Example answer · lands in your PostAxis calendar

Full setup guide for Claude

Every step from a new PostAxis account to your first scheduled post. Takes under a minute once your accounts are connected. Want ready-made workflows? Read the full Claude guide

1
Create your PostAxis account
Sign up at app.postaxis.io. Every plan starts with a 7-day free trial and includes MCP access with OAuth sign-in. Create an account
2
Connect your social accounts
Open Accounts in PostAxis and connect the networks you want to post to: Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads or Telegram. Your agent can only post to accounts connected here, and it never sees your social media passwords. Open Accounts
3
Open Connectors
In Claude (web or desktop), click your name → Settings → Connectors, then Add custom connector. On Team and Enterprise plans an owner adds it under Organization settings first.
4
Paste the MCP URL
Name it PostAxis, paste the URL below and click Add. Leave the advanced OAuth fields empty; PostAxis registers Claude automatically.
Copy this
```
https://postaxis.io/api/mcp
```
5
Connect and approve
Click Connect next to PostAxis. Sign in to PostAxis on the page that opens and click Approve.
6
Enable it in a chat
In a chat, open the tools menu (the sliders icon) and make sure PostAxis is switched on.
7
Ask Claude to post
Ask in plain language. Claude shows each tool call and asks before running ones that create, change or delete posts.

What can Claude do with PostAxis?

Everything PostAxis does in the dashboard that makes sense to do by asking: writing, scheduling, editing, publishing and checking your queue.

Sentences in, posts out

Describe the post in your own words. Claude turns it into posts and PostAxis handles the scheduling.

Every network you run

Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads and Telegram, from a single message.

Checked before it’s saved

Caption length, media count, video length and format are checked for every network before anything is saved.

Weeks ahead in one go

Ask for a week or a month. Claude can dry-run up to 50 posts at once, show you the plan, then schedule it.

Your images and video

Attach images and videos from a link, or get a one-time upload link for files on your computer.

Your accounts, your call

Claude signs in as you and can only reach accounts connected in your workspace. Cut it off from Settings whenever you like.

What is Claude?

Claude is Anthropic’s AI assistant, on the web, desktop and mobile. Connectors let Claude use outside tools over MCP, and it shows you each tool call before it runs.

Claude is good at writing in your voice. With PostAxis, it can take your notes, write posts for each network and schedule them in one conversation.

What can you ask Claude to post?

Brief it like a person: what it’s about, where it goes, when. Four requests that work well with Claude:

Your voice
Notes into posts
Here are my notes from this week. Turn them into five posts for LinkedIn and Threads and spread them over next week at 9:00.
To Claude
Calendar
Fill next week
Next week is empty. Give me one post a day at 10:00 for X, LinkedIn and Threads, built around our pricing update. Let me see the list first.
To Claude
Photo
Put a photo out tonight
Here’s the link to today’s product shot. Instagram and Threads at 18:00, a two-line caption, no more than three hashtags.
To Claude
Right now
Post an update immediately
The outage is fixed. Post a short all-clear to our Telegram channel and Facebook page now and confirm when both are up.
To Claude

How does Claude talk to PostAxis?

Through MCP, the Model Context Protocol: an open standard for giving AI apps tools. PostAxis runs an MCP server; Claude connects to it and gets 11 tools that work on your account, nothing more. Full MCP reference

From your message to a scheduled post

What happens between you hitting enter and the post showing up in your calendar.

You write one message: what, where, when
Claude looks up your accounts and the limits of each network you named
It drafts a version per network and sends them to PostAxis
PostAxis checks every version and saves it as scheduled, a draft or live
The post sits in your calendar, editable until it goes out

Claude + PostAxis

Server: https://postaxis.io/api/mcp
Transport: Streamable HTTP
Sign-in: OAuth 2.1

Tools Claude discovers

list_workspacesYour PostAxis workspaces
list_accountsConnected social accounts per workspace
get_platform_rulesCaption limits and media rules per network
upload_media_from_urlPull an image or video into your media library
create_upload_linkOne-time link for uploading a local file
create_postDraft, schedule or publish one post
create_posts_bulkSchedule up to 50 posts in one call
list_postsPosts by status or date range
get_postOne post with its per-network status
update_postEdit text, media or time before it goes out
delete_postRemove a draft or scheduled post

Does Claude write a different version for each network?

It can, and it should: X counts characters, LinkedIn rewards a longer read, Telegram has no title. Name the networks in one request and Claude sends one post with a version per network. PostAxis rejects any version that breaks that network’s limits before it is saved.

Share the 2.0 release with the screenshot from our blog: a punchy line on X, a short story on LinkedIn, the full changelog on Telegram. All at 14:00.

Done. Here’s what I did:

X: 1 post, 212 characters, screenshot attached
LinkedIn: 1 post, 4 short paragraphs, screenshot attached
Telegram: the full changelog, screenshot attached
Scheduled together for 14:00, one post ID

via PostAxis

Example conversation

Can Claude schedule 30 days of posts at once?

Yes. Claude can send up to 50 posts in one bulk call. Ask it to validate first: PostAxis checks every post and saves nothing, so you can review the plan before it is scheduled.

Plan 30 days of posts for X and LinkedIn about our product, validate them, show me the calendar, then schedule.

Done. Here’s what I did:

Validated 30 posts, each going to X and LinkedIn, 0 problems
Showed the calendar and waited for approval
Scheduled all 30 for 10:00 each day

via PostAxis

Example conversation

How does Claude sign in to PostAxis?

Claude signs in to PostAxis, never to your social networks. Your Instagram, X or LinkedIn accounts stay connected to PostAxis, and you can revoke Claude’s access at any time.

Every plan✓ Used by Claude

OAuth sign-in

Claude opens the PostAxis sign-in in your browser
You log in and click Approve
It gets access to your account only, until you revoke it

Best for apps you use yourself: ChatGPT, Claude, Cursor, Codex and most others

API add-on

API key

Create a key under Settings → API keys
Send it as Authorization: Bearer KEY, or in the URL for clients that only take a URL
Revoke the key any time and access stops at once

Best for servers and automations with no browser: n8n, Grok, Manus, headless agents

If something doesn’t work

The most common problems when connecting Claude, and how to fix them.

The agent says no accounts are connected

Connect at least one social account under Accounts in PostAxis. If you use several workspaces, tell the agent which one, for example “use my Acme workspace”.

401 Unauthorized or “sign in again”

The sign-in expired or was revoked. Reconnect from your agent (it opens the PostAxis sign-in again). With an API key, check the key is still active under Settings → API keys.

A post was rejected before saving

PostAxis checks each network’s rules first: caption length, media count, video length and format. The error says what to change; ask the agent to fix it and try again.

Posts are scheduled at the wrong time

Say the timezone in your request, for example “9:00 Europe/Berlin”. Without one, the agent uses the timezone it was told or UTC.

I want to stop an agent from posting

Open Settings → API keys in PostAxis. Revoke the agent under Connected agents, or revoke its API key. It loses access immediately.

Claude and PostAxis: questions

Which Claude plans support custom connectors?

Custom connectors are available on Claude’s paid plans. Once you add PostAxis, it works across Claude on the web, desktop and mobile.

Is there a one-click “Connect to Claude” button?

PostAxis has been submitted to the Claude connector directory. Until it’s listed, adding it as a custom connector takes about a minute and uses the same OAuth sign-in.

Can Claude upload images and videos?

Yes. Claude can import media from a public URL with upload_media_from_url, or create an upload link for files on your computer, then attach them to posts.

How is this different from Claude Code?

Claude (the app) is for chat. Claude Code is the terminal coding agent; it uses the same PostAxis server and is handy for posting release notes straight from your repo.

What is the PostAxis MCP server?

It’s a remote Model Context Protocol server at https://postaxis.io/api/mcp that gives AI agents 11 tools to list your accounts, upload media and create, schedule, edit and delete posts in PostAxis.

Which social networks are supported?

Instagram (posts, Reels, carousels), TikTok (videos and photo posts), YouTube Shorts, X, LinkedIn, Facebook Pages, Threads and Telegram channels.

How much does it cost?

MCP access with OAuth is included in every PostAxis plan, and every plan starts with a 7-day free trial. API keys need the API add-on.

What stops an agent from posting something wrong?

PostAxis checks every post against each network’s rules before saving, the agent can preview bulk plans without saving them, everything shows up in your calendar, and you can revoke an agent at any time in Settings → API keys.