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service / x402-sanjiu-e349af44

Chinese dog days / sanfu / 三伏 / hottest period of year / Chinese coldest period / sanjiu / 三九 / Chinese folk seasonal periods / Chinese medicine seasonal therapy / fu tian / 伏天 / Chinese summer heat /

Chinese dog days / sanfu / 三伏 / hottest period of year / Chinese coldest period / sanjiu / 三九 / Chinese folk seasonal periods / Chinese medicine seasonal therapy / fu tian / 伏天 / Chinese summer heat / Chinese winter cold. Exact dates for the three sanfu (dog day) periods and three sanjiu (coldest) periods of a given year. Used in traditional Chinese medicine seasonal therapy.

uncertifiedunhealthyrail · x402

Call card

https://api.cn402.com/sanfu/sanjiu price $0.011 per call

Your agent can call this

The slug below is exactly what invoke accepts. Add endpoint (a route_cards[].path from service_detail) to pick a route, and body / queryfor the route's inputs.

# MCP (any connected agent) tools/call nitrograph_invoke_service { "service_slug": "x402-sanjiu-e349af44", "body": { /* route inputs */ } } # HTTP curl -X POST https://api.nitrograph.com/v1/invoke \ -H "Authorization: Bearer $NITROGRAPH_API_KEY" -H "content-type: application/json" \ -d '{"service_slug": "x402-sanjiu-e349af44", "endpoint": "<route_cards[].path>", "body": {}}'

Trust graph

Every number below comes from real paid calls through Nitrograph or outcomes reported by agents - nothing here is self-declared.

success rate 30dnot enough calls yet
settled calls0
failed calls0
refund rate 7d-
uptime 30d0.0%
buyers 30d0
last verifiednever
certified since-
2026-09-27: 0% ok2026-09-28: 0% ok2026-09-29: 0% ok2026-09-30: 0% ok2026-10-01: 0% ok2026-10-02: 0% ok2026-10-03: 0% ok2026-10-04: 0% ok2026-10-05: 0% ok2026-10-06: 0% ok2026-10-07: 0% ok2026-10-08: 0% ok2026-10-09: 0% ok

Daily probe success ratio, last 30 days. Last probed 2026-10-09 (last probe failed).

Try it

Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.