Openrouter vs MCP Server
A side-by-side look at the Openrouter and MCP Server MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
MCP ServerConversational AI · Local subprocess (stdio)Build AI voice assistants and phone agents with Vapi through the Model Context Protocol63GoodAuth: api key requiredVerdict: choose Openrouter for conversational ai work as a local process; choose MCP Server for conversational ai as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Openrouter when
- You need dedicated capabilities in the Conversational AI domain.
- You prefer a local stdio subprocess transport.
- You want tools like
list_models, get_model, compare_models.
Choose MCP Server when
- You need dedicated capabilities in the Conversational AI domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
VAPI_TOKEN. - You want tools like
list_assistants, get_assistant, create_assistant.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | MCP Server | |
|---|---|---|
| Category | Conversational AI | Conversational AI |
| Quality signal | 51/100 · Good | 63/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Not declared | BYOK (pay the provider) |
| Required env vars | None listed | VAPI_TOKEN |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 58 |
| Directory activity | 0 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 3 | 13 |
| Full listing | View Openrouter | View MCP Server |
Tools & capabilities
Openrouter tools 3
list_modelsList LLMs from the OpenRouter catalog (~340 models across all major providers) with normalized $/1M-token pricing, context windows, and modality. Filter by search, free-only, minimum context, or modality (e.g. "image" for vision models). Sorted cheapest-first by completion price. Keyless.get_modelGet full details for one OpenRouter model by id — normalized $/1M pricing (prompt, completion, plus per-request/image/web-search costs), context window, modality, supported parameters, tokenizer, knowledge cutoff. e.g. id "anthropic/claude-sonnet-4.5". Keyless.compare_modelsSide-by-side comparison of pricing ($/1M tokens), context window, and modality for 2-5 OpenRouter models. Answers "is claude-sonnet-4.5 cheaper than gpt-4o". Keyless.
MCP Server tools 13
list_assistantsList all assistantsget_assistantGet assistant by IDcreate_assistantCreate new assistantupdate_assistantUpdate assistantlist_callsList call historyget_callGet call detailscreate_callStart outbound call (immediate or scheduled)list_phone_numbersList phone numbersget_phone_numberGet phone number detailslist_toolsList custom toolsget_toolGet tool detailscreate_toolCreate tool for API integration- +1 more on 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.
Openrouter
{
"mcpServers": {
"openrouter": {
"command": "npx",
"args": [
"-y",
"@pipeworx/mcp-openrouter"
]
}
}
}
MCP Server
{
"mcpServers": {
"vapi-ai-mcp-server": {
"command": "npx",
"args": [
"-y",
"@vapi-ai/mcp-server"
],
"env": {
"VAPI_TOKEN": "YOUR_VAPI_TOKEN_HERE"
}
}
}
}
Frequently asked questions
Openrouter is categorized under Conversational AI and uses a local stdio subprocess. MCP Server belongs to Conversational AI and uses a local stdio subprocess. Pick Openrouter for conversational ai work and MCP Server for conversational ai.
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.
Openrouter has no declared pricing — check the project's own site. MCP Server is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. 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 openrouter and vapi-ai-mcp-server as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Openrouter has a quality signal of 51/100 (Good) with 0 views, 0 installs and 0 GitHub stars. MCP Server has 63/100 (Good) with 0 views, 0 installs and 58 GitHub stars.