You want to connect an AI social media agent to your WordPress blog so that publishing an article once turns into a scheduled set of posts on Instagram, TikTok, YouTube, X, LinkedIn, Facebook and Threads. Creator OS does that with two pieces: a blog connection that reads and writes your WordPress site, and a hosted MCP server that lets an AI app (Claude, ChatGPT, Claude Code, Cursor, Codex, Windsurf or VS Code) call tools like blog_create_article and create_post on your behalf. This guide walks through the actual setup, in order, with the commands you will run and the errors you are most likely to hit.
WordPress site
|
| connect (blog:connect)
v
Creator OS <----- hosted MCP server (mcp.creatoros.ca/mcp)
| ^
| | tool calls: create_post, list_posts,
| | get_post_analytics, blog_create_article
v |
Instagram / TikTok / YouTube / X / LinkedIn / Facebook / Threads
|
v
Analytics, comments, DMs, one inboxWhat Connecting an AI Social Media Agent to WordPress Actually Means
It does not mean installing a plugin that auto-shares a link to a couple of networks. It means three things are wired together:
- Your WordPress site is a connected source in Creator OS, so the platform can read your articles and create new ones.
- Your social accounts are connected too, so the platform can publish to them.
- An AI app is connected to the hosted MCP server at
https://mcp.creatoros.ca/mcp, so it can call publish, schedule and analytics tools without you clicking through a dashboard.
The agent does not need a browser session on your site. It needs an authenticated tool surface. Creator OS supplies one, and every plan includes API keys, the MCP server, the CLI and the agent skills.
Why Manual Cross-Posting Breaks Down After Your First 50 Posts
The first twenty posts are easy. You copy the link, trim a caption, pick a time, and repeat on four networks. Then the shape of the work changes. The long-form video needs a title and a thumbnail. The short gets a different caption. Threads caps you at 500 characters per post. X threads need items in order. Instagram captions have no clickable links, so the URL has to go in the first comment. Each network applies its own rules, and you are the one remembering all of them.
At fifty posts, what breaks is not effort. It is consistency. One platform gets skipped. A caption gets reused where it does not fit. Analytics live in four tabs, so you stop comparing anything.
An agent changes the unit of work. You approve a plan once, and the tools apply each platform’s rules for you. The validate:post-length command checks a caption before it goes anywhere, and the check_caption_length MCP tool does the same thing when the call comes from an AI app instead of a terminal. If you want the fuller picture of how an open-source agent harness runs this loop, the Social Agents write-up covers it.
What You Need Before You Start: WordPress, Creator OS, and Social Accounts
- A WordPress site, either WordPress.com or self-hosted on your own domain.
- A Creator OS account. The Creator plan is $19.99/month or $59.99/year and covers up to 8 connected accounts: 7 socials plus Skool.
- At least one social account, connected as a Business or Creator account where the network requires it. Instagram requires Business or Creator.
- An AI app that supports MCP. Claude, ChatGPT, Claude Code, Cursor, Codex, Windsurf and VS Code all do.
If you only want to read analytics, connect the AI app in read-only mode. The platform hides write tools from read-only connections and refuses writes at the API level, so an agent cannot publish by accident.
Step 1: Connect Your WordPress Site to Creator OS
Run creatoros blog:connect. It opens a browser flow against your WordPress site. For a self-hosted site you can connect directly instead:
creatoros blog:connect-selfhosted --site https://yoursite.com \
--username yourlogin --password "your-app-password"Confirm the site shows up:
creatoros blog:sitesNow your site is a real target, not just a source. The agent can draft an article with blog_create_article and it lands as a draft unless publish is explicitly set. That default matters: nothing goes live on your site until you say so.
creatoros blog:create --title "Five Ways to..." --file post.htmlStep 2: Give Your AI Agent Permission to Post on Each Social Platform
Connect social accounts first, because a tool call can only publish to an account that exists.
creatoros accounts:connect instagram
creatoros accounts:connect tiktok
creatoros accounts:list
creatoros accounts:healthThen attach your AI app to the MCP server. In Claude, go to Settings > Connectors > Add custom connector, paste https://mcp.creatoros.ca/mcp, sign in to Creator OS, pick the workspace, and choose read only or read & write. ChatGPT takes the same URL as a connector in developer mode. Claude Code takes it as a command:
claude mcp add --transport http creatoros https://mcp.creatoros.ca/mcp \
--header "Authorization: Bearer cos_live_..."Cursor, Windsurf and VS Code use an mcpServers entry with type http, the same URL, and the same Authorization header.
One key is pinned to one workspace, which is one set of socials. An agent holding that key cannot post to another workspace. That is the boundary you want when an AI app is doing the clicking.
Step 3: Set the Rules for How New Posts Get Scheduled and Cross-Posted
This is where the workflow stops being manual. Give the agent a rule and let it apply that rule every time.
A CLI version of the rule looks like this:
creatoros posts:create --text "New post is live: 5 workflows that..." \
--platforms instagram,tiktok,linkedin \
--media https://yoursite.com/clip.mp4 \
--scheduledAt 2026-03-04T14:00:00Z --timezone America/Toronto \
--hashtags creatoros,automationFrom an AI app, the same intent arrives as a create_post call. Under the hood the request body is a POST /v1/posts with content, platforms, media, schedule_at, timezone and draft fields. Creator OS then applies each platform’s own rules: vertical video becomes a Short on YouTube, Reels settings apply on Instagram, and TikTok consent flags get filled in by the simple form. If you name a network you have not connected, the response lists it under missing_platforms and the rest still publish.
For anything more specific, use per-platform objects. Each platform gets its own options and, if you want, its own content. TikTok settings go in a top-level tiktok object. Upload media once with POST /v1/media to get a med_ id you can reuse everywhere, so a single file is not uploaded seven times.
Three rules worth setting early:
- New article publishes: post the link to X and LinkedIn, and put the link in the Instagram first comment since captions have no clickable links.
- Long video publishes: schedule a Short or Reel for the next day at your best-time slot, from
analytics:best-time. - Nothing auto-publishes: send everything as a draft for the first two weeks so you can read each caption before it ships.
draft trueon TikTok even routes the video to the Creator Inbox to finish in the app.
If you want the whole set of steps packaged as reusable Claude Code skills, run npx @creatoros/cli@latest init. That installs 14 skills including post-everywhere, schedule-posts, blog and analytics. Later, creatoros sync updates them without overwriting files you have edited; updates land as .new files instead.
Step 4: Track Performance Without Opening Seven Separate Apps
Once the publishing side works, the reporting side is one command away.
creatoros analytics:posts --from 2026-02-01 --to 2026-03-01 --sortBy engagement
creatoros analytics:daily --platform instagram
creatoros accounts:follower-stats --granularity weeklyFrom an AI app the same data comes back through get_post_analytics, get_daily_metrics, get_follower_stats and get_best_time_to_post. Because those are tool calls, the agent can compare a blog post’s performance against the social posts it generated, then feed the winner back into the next scheduling decision.
Comments and DMs live in the same place. creatoros inbox:comments lists them by platform, and replies work on Instagram, Facebook, X, Threads, YouTube and LinkedIn. DMs work on Instagram, Facebook and X, all in one inbox. If you want a fuller picture of that side, see the one inbox post.
Trackable short links round it out. Create one with links_create or via the API, and links_stats gives you click counts on go.creatoros.ca URLs, so a blog article’s traffic can be tied to the social post that drove it.
Common Connection Errors and How to Fix Them
“Missing platforms” in the response
You named a network that is not connected in this workspace. The other platforms still published. Run creatoros accounts:list, connect the missing one, and repost only that network.
The agent cannot publish, only read
The MCP connection was set up as read only. Read-only connections only see read tools, and the API refuses writes from them. Reconnect the app and choose read & write.
Instagram rejects the post
Instagram publishing needs a Business or Creator account. Also remember the API cannot attach trending audio, so the sound has to be baked into the file before upload. Stories do not support collaborators, location or paid partnership.
TikTok publishes public when you wanted a draft
Business app connections publish videos public-only unless sent as drafts. Set draft true and finish in the TikTok app.
Threads truncates
Threads allows 500 characters per post and 250 posts per 24 hours. Check with creatoros validate:post-length before it goes out.
Every error looks the same shape
API errors return { error: { code, message, status } }. Read the code field first; it tells you whether the problem is auth, a missing account, or a platform rule.
For the base URL, request shapes and field-by-field reference, use the docs at https://www.creatoros.ca/docs, plus the MCP page and the CLI page. If you are working in Claude specifically, the Claude MCP walkthrough shows the connector screens, and the API for AI agents piece explains why the ids are opaque typed tokens like acc_, post_ and med_.
Get Started: Turn One Publish Click Into a Full Week of Posts
The setup is four moves: connect WordPress, connect your social accounts, attach one AI app to the MCP server, and write down the rules for what happens when an article goes live. After that, publishing is one action and the agent handles the rest.
Start on the Creator plan at $19.99/month or $59.99/year, which covers up to 8 connected accounts, and includes API keys, the MCP server, the CLI and the agent skills. You can sign up here. If you would rather watch it happen first, the walkthroughs are on the KevBuildsApps YouTube channel, and the open-source tooling launch video is here.