In-depth architectural comparison of the Activecampaign and Getpoststack MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Activecampaign
Communication · Remote HTTP/SSE
Quality: 49/100 (Fair) | Auth: No auth required
Getpoststack MCP
Communication · Local stdio
Quality: 56/100 (Good) | Auth: API Key required
Verdict Summary: Choose Activecampaign if you need specialized Communication tools running via a hosted cloud SSE transport. Choose Getpoststack MCP if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
A
Choose Activecampaign when:
You need dedicated capabilities in the Communication domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
EU-hosted email API exposed as MCP tools — send transactional and marketing email, manage contacts and segments, run broadcasts, render templates, and read analytics from Claude/Cursor. GDPR compliant, EU-only data residency (Germany + Finland). npx -y @poststack.dev/mcp.
List/search contacts (subscribers) in an ActiveCampaign account. Filter by exact email or a free-text search across name/email. Returns contacts with IDs, emails, names, and meta.total.
get_contact
Get a single contact by ID. Returns email, name, phone, custom field values, and engagement details.
list_deals
List CRM deals (sales pipeline opportunities). Returns deal IDs, titles, values, stages, and owners with meta.total.
list_campaigns
List email campaigns with send/open/click metrics. Returns campaign IDs, names, status, send dates, and aggregate stats.
list_lists
List contact lists. Returns list IDs, names, subscriber counts, and creation dates.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Activecampaign is categorized under Communication and uses a remote streaming HTTP/SSE transport. In contrast, Getpoststack MCP belongs to Communication using local stdio subprocess. Select Activecampaign when you need capabilities focused on communication and Getpoststack MCP when you require tools for communication.