MCP server

The Voidhash MCP server lets compatible coding agents inspect and edit paywalls, write components, and render previews.

Server

https://api.voidhash.com/api/mcp

The server uses streamable HTTP and bearer authentication.

Create credentials

For a single project, use a project secret key and keep it out of source control:

Authorization: Bearer vh_sk_...

For a user key that can access multiple projects, also send the project ID or slug:

Authorization: Bearer vh_...
X-Voidhash-Project: my-project

The CLI prints the headers for the current login without putting the key in a command argument:

npx voidhash-cli auth token --project my-project

Configure your client

Add a remote or streamable HTTP MCP server named voidhash, then set the URL and headers above. Clients that use JSON configuration commonly accept this shape:

{
  "mcpServers": {
    "voidhash": {
      "type": "http",
      "url": "https://api.voidhash.com/api/mcp",
      "headers": {
        "Authorization": "Bearer vh_sk_..."
      }
    }
  }
}

Configuration keys differ between clients. Use your client's remote MCP instructions when it expects servers instead of mcpServers, or serverUrl instead of url.

Verify the connection

Ask the agent:

What paywalls do I have in Voidhash?

It should call list_paywalls and return the current project's paywalls. If it receives 401, replace the key. If a user key can authenticate but no project is selected, add X-Voidhash-Project.