onomeo

io.github.Owaid0723666Published by GitHub account Owaid0723666v0.1.0Updated Oct 24, 2026

Ask free LLMs (DeepSeek, GLM, Gemini, Mistral) for a second opinion from any MCP client.

VerifiedSTDIODesktop onlyDeveloper ToolsAI & ML

Overview

AI-generated overview

Lets a coding agent query free third-party LLMs (DeepSeek, GLM, Gemini, Mistral) through the onomeo API for a second opinion or a side-by-side comparison.

What you can do
  • List the models currently served, split into free and pay-as-you-go, with the live free call limit
  • Send a prompt to one model, or let auto pick a healthy free model and report which one answered
  • Send the same prompt to two to four models in parallel and get the answers side by side
When to use it
Useful when you want a second opinion on a diff, a regex or a design question from models other than the one you are already talking to, or want several answers compared in one step.
Requirements
Runs locally as a stdio process; Node.js 20 or newer is required. An onomeo account and API key supplied in the ONOMEO_API_KEY environment variable (free to create, no card needed for free models). Network access to the onomeo API; ONOMEO_BASE_URL can override the host.
Before you install
Free models are served through third-party free tiers and several may use prompts for training, so do not send secrets or private code. Free usage is capped (30 calls per 5 hours per account at the time of writing) and compare_models spends one call per model. Paid models are pay-as-you-go from a 5 USD top-up. The service is in public beta and not every feature is guaranteed to work.

Installation

In SourceWeft

  1. Open onomeo in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

onomeo-mcp

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 [email protected]. This server is written and maintained by the operator of onomeo.

Tools

ToolWhat it does
list_modelsLists the models served right now, split into free and pay-as-you-go, with the current free call limit. Needs no API key.
ask_modelSends a prompt to one model and returns the answer. model defaults to auto, which picks a healthy free model and reports which one answered.
compare_modelsSends the same prompt to 2-4 models in parallel and returns the answers side by side.

Setup

  1. Sign up at onomeo.com and create an API key. No card is required for the free models.
  2. Add the server to your client. Node.js 20 or newer is required.

Claude Code:

sh
claude mcp add onomeo -e ONOMEO_API_KEY=your-key -- npx -y github:Owaid0723666/onomeo-mcp

Cursor, Claude Desktop, Cline, Windsurf and other clients that read an mcpServers block:

json
{  "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.

Limits and pricing

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.

Privacy

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.

Development

sh
npm installnpm test                                          # against a local stubONOMEO_LIVE=1 ONOMEO_API_KEY=your-key npm test    # one real call to "auto"

ONOMEO_BASE_URL overrides the API host.

License

MIT

Source: README.md at commit 48efa38

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.1.0LatestOct 10, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts