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Current time and timezone conversion for any IANA zone.
About
Current time and timezone conversion for any IANA zone.
Security Report
clockport is a small, well-scoped timezone utility that uses only Node's Intl API and the MCP SDK, with no network calls, file access, shell execution, or credential handling. Inputs are validated with zod and a strict HH:MM regex, and the test suite covers DST and edge cases. No security findings were identified; the only observation is that the server requires no authentication, which is appropriate for a stateless local clock tool. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
8 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-cloudcorprecords-clockport": {
"args": [
"-y",
"@reneturcios/clockport"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
clockport
clockport tells you what time it is somewhere else, and what a given clock time in one place corresponds to in another. It answers two questions — "what time is it in Tokyo right now?" and "my call is at 12:00 New York time, what is that in London?" — from the command line or as an MCP server for agents.
All zone handling uses the IANA timezone database behind Node's Intl
support, so daylight-saving changes are handled by the platform rather
than by a fixed offset table.
Install
npx @reneturcios/clockport now Europe/London
Or run the container image:
docker run -i ghcr.io/cloudcorprecords/clockport
The container defaults to the MCP server (see below). Pass CLI arguments to use it as a CLI instead.
CLI
# Current time in a zone
clockport now America/New_York
# 2026-01-15 07:00:00 (America/New_York, 2026-01-15T07:00:00-05:00)
# Convert a time between zones
clockport convert America/New_York 12:00 Europe/London
# 2026-10-26 12:00 America/New_York -> 2026-10-26 17:00 Europe/London (+5h)
# Machine-readable output
clockport now Asia/Tokyo --json
clockport convert UTC 09:30 Asia/Kolkata --json
clockport --version
Exit codes: 0 on success, 1 when a zone or time cannot be handled
(the error names the problem), 2 for usage errors.
MCP server
One bin serves both faces. The mcp subcommand starts a stdio MCP
server:
npx -y @reneturcios/clockport mcp
MCP client configuration:
{
"mcpServers": {
"clockport": {
"command": "npx",
"args": ["-y", "@reneturcios/clockport", "mcp"]
}
}
}
Tools
| Tool | Input | What it returns |
|---|---|---|
get_current_time | timezone (string, required) — IANA timezone name | The current time in that zone: wall-clock rendering, ISO 8601 form with offset, weekday, UTC offset in minutes, and whether DST is in effect. |
convert_time | source_timezone (string, required), time (string, required, HH:MM 24-hour), target_timezone (string, required) | The requested time rendered in the target zone, with the target date (which may differ from the source date), an ISO 8601 form, and the signed offset difference. |
Unknown timezone names and times that are not valid HH:MM values are
reported as tool errors rather than guessed at.
Reference date for conversions
convert_time takes a time of day but no date. Conversions therefore
use today's date — the current calendar date in the source zone —
as the reference date. This matters around daylight-saving transitions,
where the offset difference between two zones can change from one week
to the next; the result always reflects the difference in force today.
The reference date used is included in every conversion result.
Development
npm install
npm run build # tsc -> dist/
npm test # node test runner over test/*.test.ts, no network
npm run dev # run the CLI from source via tsx
License
MIT — see LICENSE.
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