# yarrow MCP server

I-Ching (周易) oracle: cast a hexagram, read classical commentary, get a reflection. Bilingual.

## Links
- Registry page: https://www.getdrio.com/mcp/io-github-shaozhengkun123-yarrow
- Repository: https://github.com/shaozhengkun123/yarrow

## Install
- Endpoint: https://yarrow-oracle.shaozhengkun.workers.dev/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://yarrow-oracle.shaozhengkun.workers.dev/mcp

## Tools
- cast_hexagram - Cast a hexagram for an I-Ching consultation. Returns the primary hexagram, the six lines (6=old yin, 7=young yang, 8=young yin, 9=old yang from bottom to top), any moving lines, and the changing hexagram if there are moving lines. Pass `seed` to make the cast deterministic (useful for testing or for reproducing a reading). Endpoint: https://yarrow-oracle.shaozhengkun.workers.dev/mcp
- lookup_hexagram - Return the full classical sources for a hexagram by its number (1–64): judgment (卦辞), image (大象), Tuan commentary, Zhu Xi 周易本义, Yang Tian Cai modern explanation, plain-language 白话, and historical anecdote — in both Chinese and English. Endpoint: https://yarrow-oracle.shaozhengkun.workers.dev/mcp
- divine - Full I-Ching consultation pipeline: cast a hexagram for the question, look up the classical sources, and produce a thoughtful reading via Claude. Daily quota: 30 readings per device_id (or per anonymous IP if no device_id is supplied). Endpoint: https://yarrow-oracle.shaozhengkun.workers.dev/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: io.github.shaozhengkun123
- Version: 0.1.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: May 26, 2026
- Source: https://registry.modelcontextprotocol.io