Use Oscar in Claude and ChatGPT

Oscar’s MCP server · https://writeoscar.com/mcp

The short version.

Connect Oscar to Claude, ChatGPT or any app that speaks MCP, and ask about your accounts, have Oscar write posts from what you paste, and run your queue from the chat.
Everything Oscar writes from a chat lands in Saved. Your app asks you before anything changes what goes out, and every change can be undone in Oscar.
You choose the brands it works on and whether it may touch your queue, and you can disconnect it any time.

What you need

An Oscar account (start a 7-day free trial) with at least one of Threads, X or LinkedIn connected. Oscar reads from and writes for the brands you belong to.

Connect it

In Claude

Open Settings → Connectors and choose Add custom connector (or find Oscar in the directory).
Paste https://writeoscar.com/mcp and add it.
Sign in to Oscar when asked, choose the brands Claude may work on and whether it may change your queue, and select Allow.

In ChatGPT

Open Settings → Apps and add an app with https://writeoscar.com/mcp.
Sign in to Oscar and choose what it may do, as above.

Anywhere else

Any MCP client that supports remote servers with OAuth: the server is https://writeoscar.com/mcp (Streamable HTTP). It signs in with OAuth 2.1 and PKCE, registering itself by Dynamic Client Registration or a Client ID Metadata Document.

Things to ask

“How did my accounts do this week?”
“What’s working on X right now, and what is Oscar testing?”
“Turn these call notes into posts for Threads, X and LinkedIn.”
“Write my newsletter from my five best posts this month.”
“What goes out tomorrow? Move the 7:14 one to Friday morning.”
“Stop opening posts with “Most people”.”

Where your app shows them, Oscar answers with cards: your week, a post being written and each network’s version, the queue.

What it can do

See what Oscar knows

Read only. These change nothing.

`get_account`	Your brands, each connected network with its followers and how Oscar posts there, and what goes out next.
`get_performance`	Views and followers on every network over the last days, each against the days before and your typical post, and your best posts.
`what_works`	Oscar’s daily reviews: what’s working, what it’s testing next, the lessons that stand and patterns forming.
`list_posts`	Posts that went out, newest or best first, with views and how each did against your typical post.
`get_post`	One post or draft in full, with its numbers over time, why Oscar chose it and what its fact check did.
`list_upcoming`	What goes out in the next days on each network, and the open times.
`list_saved`	Posts waiting in Saved.
`list_topics`	Your topics, how often each went out and when each can go again.
`get_voice`	How you write, as Oscar measured it from your own posts.
`get_leads`	Your lead magnets with visits, leads and conversion. Counts only.

Write into Saved

Oscar writes; nothing goes out until you add it to the queue.

`find_angles`	Three angles on what you paste, each with how far it’s likely to reach. Nothing is written yet.
`write_post`	Writes a post from what you paste (notes, a transcript, a doc, a link): each network’s version in your voice, through Oscar’s critic and fact check, into Saved.
`write_angle`	Writes one of the angles find_angles returned.
`rewrite_post`	Rewrites a post not out yet along your note.
`edit_post`	Makes an exact change you ask for to a post not out yet.
`give_feedback`	Your reaction or note on any post. Oscar’s writers learn from it.
`add_rule`	A standing rule every one of Oscar’s writers follows from the next post.

Change the queue

These change what goes out in public, so your app asks you before each one.

`add_to_queue`	Puts a saved post into a time, after checking it can go then.
`post_now`	Posts one post now, with the same checks as Post now in Oscar.
`move_post`	Moves a post to another time, or trades times with another post.
`take_out`	Takes a post out of its time, back to Saved or turned down.
`pause_posting`	Pauses Oscar on one network or all of them.
`resume_posting`	Resumes it: Autopilot only where you turned it on in Oscar.
`undo`	Undoes a change made from the chat in the last day.

What it never does

Turn on Autopilot, connect or disconnect a network, or change billing. Those stay in Oscar.
Show who your leads are: it sees counts only.
Act on instructions inside what you paste. Pasted material is only ever what a post is written from, and writing only lands in Saved.

Permissions, and disconnecting

When you connect, you choose the brands and whether the app may change your queue (and post when you ask). Oscar keeps a record of every change an app makes, with Undo for a day (a post that has gone out can’t be undone), in Settings → MCP, where you can also disconnect an app. See the privacy policy for what goes to a connected app and what Oscar keeps.

Help

Questions or problems: hello@writeoscar.com.