---
title: "I Ching Yarrow Stalks (大衍筮法)"
method: GET
path: "/api/trpc/iching.yarrow"
tags: ["Eastern"]
---

# I Ching Yarrow Stalks (大衍筮法)

`GET /api/trpc/iching.yarrow`

## Request

- Base URL: `https://api.asktian.com`
- URL: `https://api.asktian.com/api/trpc/iching.yarrow`
- Auth: HTTP bearer

The authentic fifty-stalk cast per Zhu Xi's 筮儀: eighteen changes with true stalk audits and the exact 1/16·5/16·7/16·3/16 line odds — proven by enumeration.

Cost: 2 TIAN Points per call. tRPC procedure `iching.yarrow`.

## Query parameters

- `input` string

## Response `200`

tRPC result envelope

- TrpcResult: tRPC HTTP response envelope.
  - `result` object
    - `data` object: The procedure's return value (system-specific).

---

[API](https://skmtc.dev/asktian/apis/asktian-metaphysics-api.md) · [All operations](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/llms.txt) · [OpenAPI document](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/revisions/3c8fdc979206?raw)