An MCP server that lets your coding agent ask other LLMs for a second opinion. It talks to onomeo, an OpenAI-compatible API where a rotating set of models (DeepSeek, GLM, Gemini, Mistral and others) is free to call with no credit card.
Typical uses from Claude Code, Cursor, Cline or any other MCP client:
"Ask DeepSeek to review this diff and tell me what it would change."
"Send this regex question to three models and compare the answers."
"Which free models are up right now?"
onomeo is in public beta. Not every feature is guaranteed to work, and feedback is actively collected and very welcome: open an issue here or write to hello@onomeo.com. This server is written and maintained by the operator of onomeo.
Tool | What it does |
| Lists the models served right now, split into free and pay-as-you-go, with the current free call limit. Needs no API key. |
| Sends a prompt to one model and returns the answer. |
| Sends the same prompt to 2-4 models in parallel and returns the answers side by side. |
Related MCP server: polydev-ai
Sign up at onomeo.com and create an API key. No card is required for the free models.
Add the server to your client. Node.js 20 or newer is required.
Claude Code:
claude mcp add onomeo -e ONOMEO_API_KEY=your-key -- npx -y github:Owaid0723666/onomeo-mcpCursor, Claude Desktop, Cline, Windsurf and other clients that read an mcpServers block:
{
"mcpServers": {
"onomeo": {
"command": "npx",
"args": ["-y", "github:Owaid0723666/onomeo-mcp"],
"env": { "ONOMEO_API_KEY": "your-key" }
}
}
}Claude Desktop: download onomeo-mcp.mcpb from the latest release, open it, and paste your key when asked.
Checked on 2026-10-10; list_models always returns the live values.
Free models: 30 calls per 5 hours per account, refilled automatically. One call covers up to 50,000 characters.
Paid models (Claude, GPT, Grok, Gemini Pro and others): pay-as-you-go from a 5 USD top-up, no subscription.
compare_models uses one call per model.
Free models are served through third-party free tiers, and several of them may use prompts for training. Each model page on onomeo states what is known. Do not send secrets or private code to free models.
npm install
npm test # against a local stub
ONOMEO_LIVE=1 ONOMEO_API_KEY=your-key npm test # one real call to "auto"ONOMEO_BASE_URL overrides the API host.
MIT
This server cannot be deployed
Open AI models through one OpenAI-compatible API: chat, live model list, prices and cost estimates.
A second opinion for AI agents: one prompt across several live Gonka models + roles, one call.
GPT, Claude, Gemini, DeepSeek, Grok, Qwen and GLM through one API key. Pay per token.
mumo is a remote MCP server for multi-model deliberation. Your agent sends a question to models from different labs — Claude, GPT, Gemini, Grok, DeepSeek, Kimi, and more — and gets back their full responses plus typed cross-model reactions. The participating models react to each other directly and explain, in their own words, what they agree with, challenge, or want to explore further. Agents can run a deliberation with `create_deliberation`, wait for results with `wait_for_round`, and steer follow-up rounds with `append_round` using structured signals like KEEP, EXPLORE, CHALLENGE, CORE, and SHIFT. Built for architecture, plan/spec review, strategy, and pre-launch pressure tests. Free tier available. API key required.
