Local-first MCP server to query and maintain a Markdown vault from Claude, Cursor, Gemini, Codex & other AI clients - no cloud, no context dump. Guided setup + standalone binaries.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add datacron --env DATACRON_VAULT_ROOT='<DATACRON_VAULT_ROOT>' -- uvx datacron~/.codex/config.toml
[mcp_servers.datacron]
command = "uvx"
args = ["datacron"]
env = { DATACRON_VAULT_ROOT = "<DATACRON_VAULT_ROOT>" }
# codex mcp add datacron --env DATACRON_VAULT_ROOT='<DATACRON_VAULT_ROOT>' -- uvx datacron~/.cursor/mcp.json
{
"mcpServers": {
"datacron": {
"command": "uvx",
"args": [
"datacron"
],
"env": {
"DATACRON_VAULT_ROOT": "<DATACRON_VAULT_ROOT>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"datacron": {
"type": "stdio",
"command": "uvx",
"args": [
"datacron"
],
"env": {
"DATACRON_VAULT_ROOT": "<DATACRON_VAULT_ROOT>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"datacron": {
"command": "uvx",
"args": [
"datacron"
],
"env": {
"DATACRON_VAULT_ROOT": "<DATACRON_VAULT_ROOT>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"datacron": {
"command": "uvx",
"args": [
"datacron"
],
"env": {
"DATACRON_VAULT_ROOT": "<DATACRON_VAULT_ROOT>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"datacron": {
"command": "uvx",
"args": [
"datacron"
],
"env": {
"DATACRON_VAULT_ROOT": "<DATACRON_VAULT_ROOT>"
}
}
}
}Environment variables
DATACRON_VAULT_ROOT
Replace the placeholders with your own credentials and keep them out of version control.