TmpState MCP MCP server

Provides a remote MCP server endpoint that exposes TmpState's zero-key temporary JSON database capabilities as typed tools. It allows AI agents to create, read, update, and delete JSON documents without requiring authentication, API keys, or signup, treating the database URL as the sole credential for state management.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by TmpState

MCP endpoint (Streamable HTTP)

https://tmpstate.dev/mcp

Vendor documentation

What you can do with it

Create temporary JSON databases for agent scratchpads
Read and write stateless data for rapid prototyping
Manage ephemeral data with automatic expiry handling
Inspect database health and schema via built-in endpoints

Tools advertised by the last live check:

create_database
database_status
list_documents
get_document
create_document
update_document
delete_document
delete_collection
delete_database
extend_database
pro_checkout
pro_list_databases
pro_create_database
pro_attach_database
pro_cancel
send_feedback

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http tmpstate-mcp https://tmpstate.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add tmpstate-mcp --url https://tmpstate.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable tmpstate-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "tmpstate-mcp": {
      "url": "https://tmpstate.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "tmpstate-mcp": {
      "type": "streamableHttp",
      "url": "https://tmpstate.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start tmpstate-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "tmpstate-mcp": {
      "type": "http",
      "url": "https://tmpstate.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http tmpstate-mcp https://tmpstate.dev/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "tmpstate-mcp": {
      "url": "https://tmpstate.dev/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "tmpstate-mcp": {
      "serverUrl": "https://tmpstate.dev/mcp"
    }
  }
}

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