# PostOnce Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## PostOnce

Draft social posts with your assistant and schedule or publish them after you confirm.

- Record: https://musedirectory.ai/connector/postonce
- Category: Marketing & Ads
- Developer: PostOnce (https://postonce.app/docs/mcp)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, sign-in needed, 193ms, checked 2026-11-10T16:06:42Z
- Endpoint: https://postonce.app/api/mcp
- Auth: Sign in with your account; Pricing: unknown
- Screening: Screened, no issues found (2026-11-10T16:06:42Z)
- Source: Found in the official MCP Registry (app.postonce/postonce) https://registry.modelcontextprotocol.io/v0/servers?search=app.postonce%2Fpostonce

Connects Muse to PostOnce so you can turn an idea into a social post draft, then review it and choose to schedule or publish. Sign-in is handled through PostOnce, and nothing goes live until you approve it.

Example request: "Draft three Instagram posts for my bakery's holiday menu and schedule them for next week."

How to connect: PostOnce is not in Muse's Connectors list yet, and it needs you to sign in with your PostOnce 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.

Screening checks:
- MCP handshake: pass (Requires sign-in (publishes OAuth metadata))
- Domain against threat feeds (Cloudflare security DNS): pass (postonce.app not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: n/a (Tools are behind sign-in)
- Inputs asking for passwords, card numbers or seed phrases: n/a (Tools are behind sign-in)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)