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OpenMark

Official registry AI and agents

Benchmark your own prompt on 100+ LLMs with real API calls; pick the cheapest model that passes.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http openmark 'https://openmark.ai/mcp' --header 'Authorization: <Bearer followed by your personal key (om_...) from openmark.ai/ui, account menu > API keys>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "openmark": {
            "type": "http",
            "url": "https://openmark.ai/mcp",
            "headers": {
                "Authorization": "<Bearer followed by your personal key (om_...) from openmark.ai/ui, account menu > API keys>"
            }
        }
    }
}

Frequently asked questions

What is OpenMark?

Benchmark your own prompt on 100+ LLMs with real API calls; pick the cheapest model that passes.

How do I install OpenMark?

It runs as a remote server. In Claude Code: claude mcp add --transport http openmark 'https://openmark.ai/mcp' --header 'Authorization: <Bearer followed by your personal key (om_...) from openmark.ai/ui, account menu > API keys>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does OpenMark need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains OpenMark?

It is published by ai.openmark. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.