Timezone Converter API
Convert datetime between timezones -- all IANA zones, UTC offset, DST-aware. ISO 8601 input/output. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"timezone-converter": {
"url": "https://timezone-converter.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://timezone-converter.api.klymax402.com/api/convert" \
-H "Content-Type: application/json" \
-d '{"datetime":"...","from":"...","to":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
utility_convert_timezone
Use this when you need to convert a date/time from one timezone to another. Returns the converted datetime with offset data in JSON.
Parameters
Example response:
{"originalDatetime":"2026-04-13T14:30:00","fromTimezone":"America/New_York","toTimezone":"Europe/Paris","convertedDatetime":"2026-04-13T20:30:00","utcOffset":"+02:00","abbreviation":"CEST","isDST":true}
When to use: scheduling meetings across timezones, converting log timestamps, coordinating international events, and displaying local times.
Not for: currency conversion (use finance_convert_currency), unit conversion (use utility_convert_units), weather data (use data_get_weather).
Example agent prompts
- "Convert a date/time from one timezone to another"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT