I Ching Hexagram MCP

IChing.Rocks provides an MCP-compatible interface for structured I Ching hexagram data: original translations, Chinese text and pinyin, trigrams, judgments, images, line texts, changing-line context, and two-hexagram reading transitions.

Compatible AI assistants such as Claude, ChatGPT, Le Chat, and Perplexity can retrieve this material directly from IChing.Rocks instead of relying on generic model memory — use the source, not a summary.

MCP Server URL (paste this into your AI client):

- Look up any of the 64 hexagrams by King Wen number.
- Retrieve the full text fields: judgment, image, line texts, Chinese characters, and pinyin.
- Work with changing lines: when you provide changing lines, the server derives the relating hexagram and transition context.
- Search the hexagram texts by keyword.
- Fetch the complete 64-hexagram dataset in one call.
- List the hexagrams in four canonical orderings: King Wen, Mawangdui, Eight Palaces, and binary.
- Compare a primary hexagram and its relating hexagram side by side.
- Look up the eight trigrams and their attributes.

Steps verified against Claude as of July 2026 — menus may move.

Connectors Directory:IChing.Rocks is not yet listed in the Claude Connectors Directory. Until a listing is available, connect it as a custom connector using the steps below.

Custom connector:Claude's current docs list remote custom connectors as available on Free, Pro, Max, Team, and Enterprise plans (beta; Free accounts are limited to one custom connector).
- On Free, Pro, or Max, openCustomize > Connectors, click+, thenAdd custom connector. On Team or Enterprise, an owner manages connectors from organization settings.
- Pastehttps://mcp.iching.rocks/mcpas the remote MCP server URL. No authentication is required.
- ClickAdd.
- In a conversation, open the chat's+menu, chooseConnectors, and enable IChing.Rocks.

First prompt to try:"Use IChing.Rocks to look up Hexagram 11."

Steps verified against ChatGPT as of July 2026 — menus may move.

ChatGPT adds custom MCP connectors through developer mode:
- OpenSettings > Apps & Connectors > Advanced settingsand enable developer mode.
- OpenSettings > Connectors > Create. Name:IChing.Rocks; Description: "Structured I Ching hexagram lookup, changing-line context, and reading support."; Connector URL:https://mcp.iching.rocks/mcp. This server needs no authentication — if ChatGPT asks for authentication settings, choose no authentication or leave the authentication fields empty.
- In a new chat, click+, chooseMore, and select IChing.Rocks.

Note: some clients, ChatGPT included, may not display source attribution prominently. Every response still carries it — see the attribution section below.

First prompt to try:"Use IChing.Rocks to look up Hexagram 11."

Steps based on Le Chat's documentation as of July 2026 — menus may move.

Custom MCP connectors are available on all Le Chat plans, including Free (on personal plans the account owner is the administrator by default), and work on web and mobile:
- In Le Chat (chat.mistral.ai), open the sidebar and go toIntelligence > Connectors.
- Click+ Add Connectorand switch to theCustom MCP Connectortab.
- Connector name:IChingRocks(Le Chat connector names cannot contain spaces); Server URL:https://mcp.iching.rocks/mcp; clickConnect. Le Chat detects the authentication method automatically — this server requires none.
- In a conversation, openToolsand enable the IChingRocks connector.

First prompt to try:"Use IChing.Rocks to look up Hexagram 11."

Steps based on Perplexity's documentation as of July 2026 — menus may move.

Custom remote connectors require a paid Perplexity plan (Pro or Max; Enterprise via an administrator):
- Open account settings and go toConnectors, then click+ Custom connectorand selectRemote.
- Name:IChing.Rocks; MCP Server URL:https://mcp.iching.rocks/mcp; Authentication:None; Transport:Streamable HTTP.
- Check the custom-connector acknowledgement and clickAdd, then click the connector card to enable it.
- In a thread, confirm the connector is selected under the+/ sources menu.

First prompt to try:"Use IChing.Rocks to look up Hexagram 11."

Any client that supports remote MCP servers over Streamable HTTP can connect using the endpoint above. For clients that install from a registry, IChing.Rocks is published on the Official MCP Registry asrocks.iching/hexagram-mcpand is also listed on Glama.

The Gemini consumer app does not currently support custom MCP connectors (Google's MCP support is in Gemini Enterprise and the Gemini CLI). Verified as of July 2026 — menus may move.

Developers using CLI tools can connect the same endpoint — e.g. Claude Code:

claude mcp add --transport http iching-rocks https://mcp.iching.rocks/mcp

Once the connector is enabled, try asking:

- "Use IChing.Rocks to look up Hexagram 11."
- "Use IChing.Rocks to give the Chinese, pinyin, judgment, image, and line texts for Hexagram 29."
- "Use IChing.Rocks to explain Hexagram 11 changing at lines 2 and 5, including the resulting hexagram."
- "Use IChing.Rocks to compare Hexagram 11 and Hexagram 12."
- "Use IChing.Rocks to search the hexagram texts for 'major transition'."
- "Use IChing.Rocks to show the eight trigrams and their attributes."
- "Use IChing.Rocks to list the 64 hexagrams in the Mawangdui ordering."

The changing-lines prompt shows what sets this connector apart: when you provide changing lines, the server derives the relating hexagram and transition context — the same two-hexagram structure a traditional reading uses.

The IChing.Rocks MCP server is read-only. It provides structured I Ching reference data. It does not read your files, send messages, take actions on your behalf, or require an account. No authentication is requested; do not enter credentials to connect. For details on what the server logs and retains, see ourPrivacy Policy.

Responses include the© IChing.Rocksattribution line. AI assistants and applications presenting this material should retain that attribution. Use of the server is governed by theMCP Server Terms of Use.

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