zerm MCP MCP server

A utility MCP server providing AI agents with durable key-value memory, scheduled callbacks, live lookups, and deterministic execution capabilities. It supports tools for memory management, timers, webhooks, DNS, email, URL checks, timezone math, and cron validation.

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 zerm

MCP endpoint (Streamable HTTP)

https://zerm.dev/mcp

Vendor documentation

What you can do with it

Manage durable key-value memory between stateless agent runs
Schedule outbound callbacks and manage timers
Perform live DNS queries and URL health checks
Validate cron expressions and convert timezones

Tools advertised by the last live check:

kv_set
kv_get
kv_delete
kv_list
timer_verify_origin
timer_schedule
timer_cancel
timer_status
name_check
email_check
url_check
cron_next
regex_test
fixture_rows
tz_convert
tz_info
dns_query
request_tool
lock_acquire
lock_release
counter_next
inbox_create
inbox_poll
inbox_delete

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 zerm-mcp https://zerm.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 zerm-mcp --url https://zerm.dev/mcp

Cursor

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

Cursor configuration

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

VS Code

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

VS Code configuration

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

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