PlaceCall vs Sendmux Sdk
A side-by-side look at the PlaceCall and Sendmux Sdk MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
P
PlaceCallCommunication · Remote HTTP/SSEReal phone calls to US businesses: book, ask, get quotes. Returns outcome and transcript.44FairAuth: not declaredVerdict: choose PlaceCall for communication work over a hosted endpoint; choose Sendmux Sdk for communication as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
PChoose PlaceCall when
- You need dedicated capabilities in the Communication domain.
- You prefer a remote HTTP/SSE transport.
- You have the keys it needs:
PLACECALL_API_KEY.
Choose Sendmux Sdk when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: OAuth 2.0.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | P PlaceCall | |
|---|---|---|
| Category | Communication | Communication |
| Quality signal | 44/100 · Fair | 47/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | Not declared | OAuth 2.0 |
| Pricing | Freemium | Freemium |
| Required env vars | PLACECALL_API_KEY | None listed |
| Verified owner |
Tools & capabilities
PlaceCall tools
No tool names declared yet. Check the project README from the listing page.
Sendmux Sdk 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.
PlaceCall
{
"mcpServers": {
"placecall": {
"url": "https://api.voygr.tech/mcp"
}
}
}
Sendmux Sdk
{
"mcpServers": {
"sendmux-sendmux-sdk": {
"command": "uvx",
"args": [
"sendmux-core"
]
}
}
}
Frequently asked questions
PlaceCall is categorized under Communication and uses a remote HTTP/SSE transport. Sendmux Sdk belongs to Communication and uses a local stdio subprocess. Pick PlaceCall for communication work and Sendmux Sdk for communication.
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.
PlaceCall is listed as freemium — a free tier with paid plans. Sendmux Sdk is listed as freemium — a free tier with paid plans. Auth: oauth 2.0. 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 placecall and sendmux-sendmux-sdk as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, PlaceCall has a quality signal of 44/100 (Fair) with 0 views, 0 installs and 39 GitHub stars. Sendmux Sdk has 47/100 (Fair) with 2 views, 0 installs and 65 GitHub stars.