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tell.dev

Official registry Developer tools

Message someone through your coding agent. Their agent gets your note and explains it.

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 tell-dev 'https://tell.dev/mcp' --header 'Authorization: <Bearer token for your agent, from tell.dev setup>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "tell-dev": {
            "type": "http",
            "url": "https://tell.dev/mcp",
            "headers": {
                "Authorization": "<Bearer token for your agent, from tell.dev setup>"
            }
        }
    }
}

Frequently asked questions

What is tell.dev?

Message someone through your coding agent. Their agent gets your note and explains it.

How do I install tell.dev?

It runs as a remote server. In Claude Code: claude mcp add --transport http tell-dev 'https://tell.dev/mcp' --header 'Authorization: <Bearer token for your agent, from tell.dev setup>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does tell.dev need an API key?

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

Who maintains tell.dev?

It is published by dev.tell. 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.