Posthell
Social media scheduler for AI agents: draft posts into a human-approved queue for 15 networks.
Connect it
Settings → Connectors → Add custom connector
URL: https://www.posthell.com/api/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://www.posthell.com/api/mcp{
"mcpServers": {
"posthell": {
"url": "https://www.posthell.com/api/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}claude mcp add --transport http posthell https://www.posthell.com/api/mcp --header "Authorization: <value>"{
"servers": {
"posthell": {
"type": "http",
"url": "https://www.posthell.com/api/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}6 tools, pulled live
shape_postTurn rough notes about what the user did (shipped a feature, fixed a bug, hit a number) into 2-3 finished social-post angles in the user's voice. Grounded only in the notes - never invents facts. Uses one AI generation from the user's monthly quota.
list_accountsread-onlyThe user's connected social accounts (id, network, handle), their account groups (a named set, e.g. one business's Instagram + YouTube), and what each network needs: caption limit, whether it needs a photo or video, and the settings it takes. Call this first, then pass a group name or account handles to create_draft or publish_post.
get_upload_urlUse this to post a file from the user's computer (a video you rendered, a photo). Returns uploadUrl and mediaUrl: PUT the raw file bytes to uploadUrl with its Content-Type header (the curl line in the result does it), then pass mediaUrl in the media list of create_draft or publish_post. Files are stored for good, so a draft keeps its video. Up to 50MB. Types: JPG, PNG, GIF, WebP, MP4, MOV, WebM, o
create_draftSave a post as a DRAFT in the user's posthell queue, with any photos or videos and per-network settings (Instagram Reel cover, YouTube title/tags). Nothing is published by this tool: the user approves it in the dashboard. Optionally propose a publish time. Warnings in the result are what would stop it publishing; fix them by calling again.
list_postsread-onlyRead the user's recent posts and drafts with per-network status, the live link once a post is up, and the reason when one failed. Published posts include engagement metrics (likes, comments, shares, engagementRate - impressions on plans with full analytics) once analytics have synced. Use it to avoid duplicating a topic AND to learn which topics performed before drafting the next post.
get_growthread-onlyThe user's follower counts and 7-day growth per connected network, plus which network is growing fastest. Use this to decide where a post matters most or to report progress.
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