I Ching Hexagram MCP Server

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answering

I Ching Hexagram MCP is answering right now. Last checked 4 min ago. It exposes 10 tools.

Public, read-only MCP over the complete 64-hexagram I Ching corpus. Deterministic lookup only.

Uptime history 51 days of history · worst day 96%

51 days agonow

95.6%

Uptime 24h

87 of 91 checks

Tools

read from the server

663 ms

Response time

average over 24h

open, no key

Access

streamable-http

I Ching Hexagram MCP does not always answer

Over the last week it answered 98.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "hexagram-mcp": {
      "url": "https://mcp.iching.rocks/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.hexagram-mcp]
url = "https://mcp.iching.rocks/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "hexagram-mcp": {
      "url": "https://mcp.iching.rocks/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "hexagram-mcp": {
      "url": "https://mcp.iching.rocks/mcp"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

hexagrams

get_hexagrams

Batch hexagram lookup by King Wen numbers (max 16 ids per call). Optional include level: summary, core (default), lines, full. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

list_hexagrams

Compact index of all 64 I Ching hexagrams (id, name, pinyin, characters, essence, trigrams, url). Optional order: kingwen (default), mawangdui, eightpalaces, binary. This is the summary index only; get_hexagram (or get_hexagrams) returns full detail for a known number, get_all_hexagrams returns the full dataset in one call, and search_hexagrams finds hexagrams by text. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

search_hexagrams

Deterministic literal/keyword search over a closed whitelist of hexagram text fields (not semantic). Case-, diacritic-, and traditional/simplified Chinese-insensitive. Optional fields, order, and limit (default 10, max 64). Texts are an original IChing.Rocks translation; vocabulary from classic English translations (Wilhelm/Baynes, Legge, Blofeld) may not match literally. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

all

get_all_hexagrams

The full 64-hexagram dataset in one call (bulk; stricter rate limit). Optional order: kingwen (default), mawangdui, eightpalaces, binary. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

hexagram

get_hexagram

One hexagram by King Wen number (1-64). Optional include level: summary, core (default), lines, full. Sibling tools cover the other cases: get_hexagrams for several numbers at once, get_all_hexagrams for the entire set, search_hexagrams to find hexagrams by text, and get_reading_context for a changing-line reading. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

reading

get_reading_context

Deterministic reading context for a primary hexagram (1-64) and 0-6 ascending changing lines. Empty changing_lines returns the primary hexagram only; one or more changing lines add the resulting hexagram, the transition, and the changing-line texts. No divination is performed. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

sequences

list_sequences

Describes the four canonical hexagram orderings (kingwen, mawangdui, eightpalaces, binary) with their 64-entry sequences. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

server

get_server_info

Build identity of the running iching.rocks MCP server: name, semantic version, git revision, protocol, and canonical MCP endpoint. Identity only — returns no hexagram data.

trigram

get_trigram

One of the eight trigrams by exactly one identifier: binary (e.g. 010), english (e.g. Fire), chinese (pinyin, e.g. Li), symbolic (e.g. Radiance), or element (Chinese character, e.g. 火). This returns a single trigram; list_trigrams returns all eight. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

trigrams

list_trigrams

All eight trigrams with font, binary, pinyin, symbolic name, english name, element character, and function. Data © IChing.Rocks — attribution is a condition of the license terms: https://iching.rocks/mcp-terms.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.iching.rocks/mcp	streamable-http	answering	626 ms	4 min ago

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I Ching Hexagram MCP — questions

Answers built from our own checks of this server.

What can I Ching Hexagram MCP do?

It exposes 10 tools, read directly from the server on our last check. Among them: get_all_hexagrams, get_hexagram, get_hexagrams, get_reading_context, get_server_info, get_trigram and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is I Ching Hexagram MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 91 checks got a reply (95.6%), average response time 663 ms. The bar chart above shows every period we have measured.

How do I connect I Ching Hexagram MCP?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does I Ching Hexagram MCP need an API key?

No. I Ching Hexagram MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is I Ching Hexagram MCP?

It answers our handshake in 663 ms on average, which is faster than 20% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.