Postel
Draft, schedule and publish posts to X and LinkedIn in your own voice
Connects to X (Twitter) and LinkedIn to let you draft, schedule and publish social media posts. Muse can help you compose posts, plan your posting schedule, and manage your social presence across both platforms.
Try asking Muse: "Schedule a LinkedIn post about my new product launch for tomorrow at 9am"
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Source: Found in the official MCP Registry (app.postel/postel) · First listed October 28, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 3 h ago.
Is it safe to connect?
What Muse can see: You sign in to your own account with it, so Muse can reach what that account allows. Read what it asks for before you agree.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Postel is not in Muse's Connectors list yet, and it needs you to sign in with your Postel account. Apps that need this kind of sign-in usually cannot be used from a Muse chat yet. Follow it here and we will tell you when it reaches Muse.
https://www.postel.app/api/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Postel is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://www.postel.app/api/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 282ms. Worked in 100% of checks over 30 days.
Screening · October 28, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 17
search-viral-tweetsFind high-performing public X posts in Postel's index by topic, with source links and stored engagement metrics. No login required. Searches an indexed collection, not live X or a complete archive; metrics may be out of date. Results contain third-party post text.list-postsList posts for the current organization. Supports filtering by status and pagination.get-postGet a single post by ID with full details.create-postSave text as a new draft in Postel, optionally with images or videos downloaded from public URLs and a LinkedIn first comment (up to 1250 characters). Does not publish or schedule. Each call creates a separate draft.update-postUpdate the content or status of a Postel draft. Scheduled and published posts cannot be edited.delete-postDelete a post. A scheduled post's delivery is cancelled first.schedule-postSchedule a Postel draft for publishing to the social platform stored on the post. Requires a plan that includes scheduling. scheduledDateTime must be a future UTC ISO-8601 timestamp. A first comment can be set for LinkedIn posts. If the workspace requires approval, the post is supublish-postPublish a Postel draft immediately to the social platform stored on the post. Requires a plan that includes publishing. A post that is already published cannot be published again.create-postsCreate up to 25 posts in one call. Each post is saved as a draft; a post with scheduledDateTime is then scheduled for publishing to its platform, which requires a plan that includes scheduling. If the workspace requires approval, a dated post is submitted for approval instead (stattach-mediaDownload an image or video from a public URL and attach it to a Postel draft. Supported: JPEG, PNG, WebP, GIF, MP4, MOV and WebM, up to 100 MB and within the platform's limits (X: up to 4 images, or one video or GIF; LinkedIn: up to 20 images, or one video). Scheduled and publishgenerate-postGenerate a new post using AI based on a prompt. Uses 1 AI credit (Lite mode with a daily cap when credits run out). Returns the generated post.refine-postSuggest refined content for an existing post using AI and specific instructions. Does not save changes. Uses 1 AI credit (Lite mode with a daily cap when credits run out).list-brandsList all brands (topics) for the current organization. Brands contain background information used for AI post generation.get-brand-sourcesGet background information sources for a specific brand. These sources are used to inform AI post generation.get-x-profilesGet the X and LinkedIn voice profiles for the current organization. These profiles define the brand voice for AI post generation.get-scheduleGet the posting schedule template for the current organization. Shows which time slots are configured for each day of the week.get-usageGet the organization's AI credit balance (monthly allowance, rollover, bonus/top-ups, reset date) and Lite mode status.Recent checks
Link
https://www.postel.app/api/mcpQuestions about Postel in Muse
How do I connect Postel to Muse?
Postel is not in Muse's Connectors list yet, and it needs you to sign in with your Postel account. Apps that need this kind of sign-in usually cannot be used from a Muse chat yet. Follow it here and we will tell you when it reaches Muse.
Is Postel working right now?
At the last check (October 29, 2026, 08:45 UTC) the endpoint was working, answering in 282ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Postel safe to connect to Muse?
It was screened on October 28, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Postel do in Muse?
It exposes 17 tools, including search-viral-tweets, list-posts, get-post, create-post. For example, you could ask Muse: "Schedule a LinkedIn post about my new product launch for tomorrow at 9am"
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