NestDaddy

Promptster

io.github.promptster-dev/promptster ยท v1.0.0

Test and compare prompts across any AI provider. Bring your own keys.

Connect Remote server

Terminal
claude mcp add --transport http promptster https://www.promptster.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "promptster": {
      "url": "https://www.promptster.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "promptster": {
      "type": "http",
      "url": "https://www.promptster.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://www.promptster.dev/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server asks for a key before it lists its tools. Connect it with your own key to see them.

Headers

NameDescription
Authorization
Required, secret
Promptster API key (pk_live_...) from promptster.dev/developer/api-keys

Details

Endpointhttps://www.promptster.dev/mcp (Streamable HTTP)
First published20 Mar 2026
Last updated20 Mar 2026
Registry nameio.github.promptster-dev/promptster

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