ReplyAtlas vs PostSider
A side-by-side look at the ReplyAtlas and PostSider MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose ReplyAtlas for social media work as a local process; choose PostSider for social media over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose ReplyAtlas when
- You need dedicated capabilities in the Social Media domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
REPLYATLAS_API_KEY, REPLYATLAS_BASE_URL.
Choose PostSider when
- You need dedicated capabilities in the Social Media domain.
- You prefer a remote HTTP/SSE transport.
- You have the keys it needs:
POSTSIDER_API_KEY, POSTSIDER_API_URL.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Social Media | Social Media |
| Quality signal | 36/100 · Fair | 43/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Remote HTTP/SSE |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | REPLYATLAS_API_KEYREPLYATLAS_BASE_URL | POSTSIDER_API_KEYPOSTSIDER_API_URL |
Tools & capabilities
ReplyAtlas tools
No tool names declared yet. Check the project README from the listing page.
PostSider tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
ReplyAtlas
{
"mcpServers": {
"replyatlas": {
"command": "npx",
"args": [
"-y",
"replyatlas-mcp"
],
"env": {
"REPLYATLAS_API_KEY": "YOUR_REPLYATLAS_API_KEY_HERE",
"REPLYATLAS_BASE_URL": "YOUR_REPLYATLAS_BASE_URL_HERE"
}
}
}
}
PostSider
{
"mcpServers": {
"postsider": {
"url": "https://docs.postsider.com/cloud/mcp"
}
}
}
Frequently asked questions
ReplyAtlas is categorized under Social Media and uses a local stdio subprocess. PostSider belongs to Social Media and uses a remote HTTP/SSE transport. Pick ReplyAtlas for social media work and PostSider for social media.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
ReplyAtlas has no declared pricing — check the project's own site. PostSider has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add replyatlas and postsider as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, ReplyAtlas has a quality signal of 36/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. PostSider has 43/100 (Fair) with 0 views, 0 installs and 11 GitHub stars.
