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Duo Data Utilities

Expand an RFC 5545 recurrence rule into concrete occurrence timestamps. Accepts an RRULE string with DTSTART, an IANA time zone, and optional EXDATE and RDATE lists, and returns up to 200 occurrences as both local wall-clock times and UTC i

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
59 ms
Price
$0.050 per call
Paying buyers, last 30 days
1 (directory's own records)
Paid calls, last 30 days
2
Category
Developer tools and utilities
Address
https://api.duoleads.com/v1/time/rrule

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/c8e9f405ec91.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].