On-brand social posts and smart replies for MCP agents
Give Claude Code, Cursor, and MCP-compatible agents a dedicated social writing layer for LinkedIn, X, Instagram, and Facebook - backed by your saved brand voice and 175 analyzed top-performing post patterns.
Why pair a writing MCP with your LinkedIn or X automation?
Posting MCPs and browser connectors only move text from point A to point B; if the agent drafts copy with a raw prompt, every post sounds generic and drifts across sessions. supapost stores your brand voice, audience, and proven hook structures server-side so any MCP tool call returns platform-formatted posts and human-sounding replies.
Platform workflows: LinkedIn, X, and Instagram MCP
LinkedIn MCP workflow
Most LinkedIn MCP servers only read profile data or push raw text to the LinkedIn API. Without a brand-voice writing layer, agents publish stiff, robotic updates. supapost handles the writing layer: two-line hooks formatted for LinkedIn's 210-character fold plus contextual B2B comments.
X / Twitter MCP workflow
Ask Claude Code to read your latest git tag, generate a 280-character launch post and a 5-part thread, and draft smart replies to top mentions. Every output respects X character limits and avoids generic AI phrasing.
Instagram MCP workflow
Generate save-worthy Instagram captions with clean line-break spacing, caption hooks above the 125-character mobile cutoff, andsquare visuals via the Grok image endpoint.
Core agent tool primitives
Every tool maps 1-to-1 to supapost's production v1 REST endpoints with Bearer authentication and deterministic JSON output.
generate_postplatform, topic, tone?, workspace_id?Generate engaging, character-checked posts for LinkedIn, X, Instagram, or Facebook using your workspace brand voice and proven hook patterns.
generate_replyplatform, original_post, goal?, workspace_id?Draft natural, human-sounding replies to LinkedIn comments, X posts, or Instagram mentions (agree & extend, respectful pushback, or follow-up question).
repurpose_contentsource_text, target_platforms[], workspace_id?Turn a changelog entry, release PR, or blog URL into platform-native drafts across X, LinkedIn, Instagram, and Facebook in one call.
get_brand_voiceworkspace_id | urlInspect or auto-detect a workspace's voice, tone, audience, and content pillars from a URL so every agent session stays consistent.
Call directly from Claude Code or wrap as an MCP tool
Pass SUPAPOST_API_KEY in your agent environment. Your workspace voice profile is applied automatically on the server, keeping agent context windows clean.
- 50 API requests/day included on Free plan
- Human-in-the-loop friendly JSON drafts
- Works alongside n8n, Zapier, Make, and Buffer
# Agent generates a LinkedIn post + 3 X replies
curl -X POST https://supapost.ai/api/v1/content/generate \
-H "Authorization: Bearer $SUPAPOST_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"type": "social",
"platform": "linkedin",
"topic": "Shipped v2 webhook retries with zero downtime"
}'Test Smart Replies Live
Try the free AI reply generator in your browser before wiring your agent.
supapost vs Raw OpenAI API
See what it costs to build brand memory and platform encoders yourself.
n8n, Zapier & Make Pipelines
Connect supapost generation to visual scheduling and approval queues.
Frequently asked questions
What does a LinkedIn MCP server do?
A Model Context Protocol (MCP) server exposes typed tools that AI assistants like Claude Code, Claude Desktop, and Cursor can invoke directly. In a LinkedIn workflow, supapost acts as the on-brand writing MCP (generating fold-optimized posts and smart comments) and pairs cleanly with publishing tools or n8n webhooks so a human can approve drafts before they go live.
Does supapost scrape LinkedIn or X accounts?
No. supapost never scrapes private social feeds or automates unauthorized account actions. It is strictly the content generation and smart reply engine, using official API keys and your workspace's saved brand profile.
How do I use supapost inside Claude Code today?
Set SUPAPOST_API_KEY in your environment and either connect an HTTP/MCP tool wrapper or let Claude Code invoke https://supapost.ai/api/v1/content/generate directly. Free accounts include 50 API requests per day with persistent brand voice.
Can agencies isolate multiple client brands in MCP sessions?
Yes. On the Agency plan, each client workspace has its own isolated brand profile and dedicated API key, so an agent generating LinkedIn and X drafts for Client A can never leak tone or context from Client B.