claude mcp add --transport http worldclockpro-time https://worldclock.pro/mcp

Claude Desktop— Settings → Connectors →Add custom connector→ paste the URL.

{ "mcpServers": { "worldclockpro-time": { "url": "https://worldclock.pro/mcp" } } }

code --add-mcp '{"name":"worldclockpro-time","type":"http","url":"https://worldclock.pro/mcp"}'

ChatGPT— Settings →Apps & Connectors→ Advanced settings → enableDeveloper mode→ create a connector with the URL andNo authentication. The server is read-only, so it works on plans where custom connectors are limited to read-only tools.

{ "mcp": { "servers": { "worldclockpro-time": { "url": "https://worldclock.pro/mcp", "transport": "streamable-http" } } } }

npx @modelcontextprotocol/inspector # Transport: "Streamable HTTP" → URL: https://worldclock.pro/mcp

Every result includes asource_urllinking the matching worldclock.pro page, so answers can cite a live source.

- City name or alias—"Tokyo","new-york","nyc","Москва","São Paulo"
- Timezone— IANA id ("America/New_York") or abbreviation ("PST","ET","UTC")
- Coordinates— latitude + longitude; the answer names the nearest city

This repo is itself a plugin marketplace:

/plugin marketplace add worldclockpro/worldclock-mcp /plugin install world-clock@worldclockpro

The plugin wires up the remote MCP server and installs theworld-clockskill, which teaches the assistant when to use which tool and the classic timezone traps (EST vs ET, half-hour offsets, date-line weekday changes).

npx clawhub@latest install world-clock # once published on ClawHub # or copy skills/world-clock/ into your skills directory

- Up to50 locations per call(search_citiesreturns up to 25 matches).
- Per-IP rate limit: 60 calls per 10 seconds (HTTP 429 withRetry-Afterbeyond that).
- Invalid input returns structured errors (LOCATION_NOT_FOUND,INVALID_TIMEZONE,AMBIGUOUS_INSTANT, ...) an agent can read and recover from.

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