Muse + Postkey
Connect Muse to Instagram: DMs, comments and posts
Muse, Meta's AI app, can add Postkey as a custom connector. Then ask Muse to draft your comment-to-DM automations, posts and replies, and approve them in Postkey.
The short answer
Yes. Postkey is the most agentic DM automation tool, and Muse can connect to it. Connect Postkey's MCP server (https://postkey.pro/mcp) to Muse, sign in, and choose what it may do. It can then create comment-to-DM automations, answer your inbox and schedule posts, using up to 52 Postkey tools, and anything that reaches real people waits for your yes.
What you can ask Muse
Ask in your own words. A few things people ask on the first day:
- Set up an automation: anyone who comments GUIDE under my next reel gets my guide link by DM.
- Only send the link to people who follow me, and ask everyone else to follow first.
- Which DMs are still unread? Draft replies to the shipping questions.
- Write a caption for Friday's drop, use the video from my library, and schedule it for 9am on Instagram and TikTok.
- How did my posts do this month, and which automation got the most link taps?
- Find @afan in my contacts and tag them VIP.
Connect Muse to Postkey
Ask Muse to add Postkey as a custom connector, then sign in. We tried this on muse.ai on October 16, 2026: Muse signed in, used Postkey's read tools, made a draft post, and an approval went from waiting to allowed through Postkey's X check. We have not scheduled a post, published an automation or sent a reply through it (the test account had no social accounts to schedule to). Meta does not review custom connectors.
- 01
In a chat on muse.ai, ask Muse to add a custom connector, and paste your Postkey address.
https://postkey.pro/mcp - 02
When Muse asks to share information with your Postkey address, choose "Always allow this site". With "Allow once", Muse asks again every time it uses Postkey.
- 03
Muse shows a Postkey card. Press Connect, then Connect again under "Custom connector".
- 04
Muse sends you to Postkey. Sign in, pick the profile, and choose what Muse may do.
Why Postkey is the most agentic DM automation tool
Postkey's MCP server can build, edit and switch on automations. An agent can do the whole job:
- Build, edit and switch on DM automations: comment to DM, keyword DMs, follow to unlock, collecting emails.
- Read the inbox, draft replies and send them once you say yes.
- Write, schedule and publish posts, and set the DM keyword each post's comments reply to.
- Find and tag contacts, and report how posts and automations did.
- Up to 52 tools in one MCP server, with OAuth sign-in or an agent key, and a skill file that teaches the agent the rules.
- Approvals, limits and protection from instructions hidden in DMs built in, so you can let an agent run it.
Why use Muse for your DMs
Muse already sits next to Instagram in Meta's apps. Postkey gives it the tools for the work around your posts: the keyword automation, the DM, the scheduled post, all through Meta's official API and waiting for your yes.
Postkey is DM automation and a post scheduler in one, so the same conversation can write the post, schedule it to 10 networks and set the keyword its comments reply to.
You stay in charge
- It acts as you, on the one profile you picked, inside your plan and its limits.
- Publishing a post, sending a reply and switching on an automation wait for your yes by default.
- Each connection has limits: up to 60 requests a minute and 200 changes a day by default (20 a minute and 100 a day for the whole profile on Free).
- Text from DMs and comments reaches the assistant marked as written by someone else, and it is told never to follow it.
- Billing, your team, connected accounts and deleting contacts stay with you. An assistant cannot touch them.
- End a connection at any time and its next request is refused.
Questions
Not by default. Sending a reply, publishing a post and switching on an automation wait in Postkey for your yes. An owner or admin can change that for one connection.
No. You sign in to Instagram on Meta's own page when you connect it to Postkey, and the assistant only gets the access you choose in Postkey.
Not for running DM automations. Ask Muse to add a custom connector with your Postkey address, then sign in.
On muse.ai on October 16, 2026, Muse signed in, used Postkey's read tools, made a draft post, and an approval went from waiting to allowed. We have not yet scheduled a post, published an automation or sent a reply through it.
Choose "Always allow this site" when Muse asks to share information with your Postkey address. With "Allow once" it asks again every time.
No. We found no official ManyChat MCP server (searched October 23, 2026), and ManyChat's public API cannot create, change or switch on a flow, so through any server built on it Muse can only start flows you made by hand. Our ManyChat MCP page has the details.