# I Ching Hexagram MCP (remote · mcp.iching.rocks)

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

- Trust score: 73/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.iching.rocks`: 73/100 (this document), [markdown](https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp.md), [page](https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp)

## Channel facts

- Endpoint: `https://mcp.iching.rocks/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.12.35`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 66/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 10 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 87/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 5419 tokens (~58/item across 93 items; 10 tools + 83 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

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

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "rocks-iching-hexagram-mcp": {
      "type": "remote",
      "url": "https://mcp.iching.rocks/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add rocks-iching-hexagram-mcp --url https://mcp.iching.rocks/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  rocks-iching-hexagram-mcp:
    url: "https://mcp.iching.rocks/mcp"
```

### Other

```json
{
  "mcpServers": {
    "rocks-iching-hexagram-mcp": {
      "type": "http",
      "url": "https://mcp.iching.rocks/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 71, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 71, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-28 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 69, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 68)

First indexed and scored.

## MCP tools (10)

### `search_hexagrams` (~221 tokens)

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.

Input parameters:

- `fields` (array|null): Whitelisted field paths to search; defaults to the documented default set.
- `limit` (integer|null): Max results, 1-64. Default 10.
- `order` (string|null): Ordering: kingwen | mawangdui | eightpalaces | binary. Default kingwen.
- `query` (string, required): Literal text to match (max 200 chars). Case-, diacritic-, and traditional/simplified Chinese-insensitive.

Output parameters:

- `fields` (array)
- `limit` (integer)
- `note` (string|null)
- `order` (string)
- `query` (string)
- `results` (array)
- `source` (object)
- `total_matches` (integer)

### `get_hexagrams` (~147 tokens)

Get Hexagrams (Batch)

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.

Input parameters:

- `ids` (array, required): Hexagram numbers, 1-64 (King Wen), no duplicates, max 16 per call.
- `include` (string|null): Detail level, each nesting the previous: summary = identity, essence, url; core (default) = adds trigrams, judgment, image; lines = adds the six line texts; full = adds symbolic meaning and final com…

Output parameters:

- `count` (integer)
- `hexagrams` (array)
- `source` (object)

### `list_hexagrams` (~157 tokens)

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.

Input parameters:

- `order` (string|null): Ordering: kingwen | mawangdui | eightpalaces | binary. Default kingwen.

Output parameters:

- `count` (integer)
- `hexagrams` (array)
- `order` (string)
- `source` (object)

### `get_server_info` (~45 tokens)

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.

Output parameters:

- `git_revision` (string)
- `mcp_endpoint` (string)
- `name` (string)
- `protocol` (string)
- `version` (string)

### `get_reading_context` (~199 tokens)

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.

Input parameters:

- `changing_lines` (array, required): Changing line numbers (1-6), strictly ascending, no duplicates. Empty for an unchanging reading.
- `include` (string|null): Detail level, each nesting the previous: summary = identity, essence, url; core (default) = adds trigrams, judgment, image; lines = adds the six line texts; full = adds symbolic meaning and final com…
- `primary_id` (integer, required): Primary hexagram number, 1-64 (King Wen).

Output parameters:

- `changing_line_texts` (array|null)
- `final_comment` (object|null)
- `primary` (object)
- `resulting` (object|null)
- `source` (object)
- `transition` (object|null)

### `get_trigram` (~207 tokens)

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.

Input parameters:

- `binary` (string|null): Three-bit trigram binary, e.g. 010 (canonical identifier).
- `chinese` (string|null): Pinyin romanization, e.g. Li. (This field holds pinyin; the Chinese character lives in element.)
- `element` (string|null): Chinese element character, e.g. 火.
- `english` (string|null): English name, e.g. Fire.
- `symbolic` (string|null): Symbolic name, e.g. Radiance.

Output parameters:

- `binary` (string)
- `chinese` (string)
- `element` (string)
- `english` (string)
- `font` (string)
- `function` (string|null)
- `source` (object|null)
- `symbolic` (string)

### `get_all_hexagrams` (~103 tokens)

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.

Input parameters:

- `order` (string|null): Ordering: kingwen | mawangdui | eightpalaces | binary. Default kingwen.

Output parameters:

- `count` (integer)
- `hexagrams` (array)
- `order` (string)
- `source` (object)

### `list_trigrams` (~61 tokens)

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.

Output parameters:

- `count` (integer)
- `source` (object)
- `trigrams` (array)

### `get_hexagram` (~181 tokens)

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.

Input parameters:

- `id` (integer, required): Hexagram number, 1-64 (King Wen).
- `include` (string|null): Detail level, each nesting the previous: summary = identity, essence, url; core (default) = adds trigrams, judgment, image; lines = adds the six line texts; full = adds symbolic meaning and final com…

Output parameters:

- `binary` (string)
- `essence` (string)
- `final_comment` (object|null)
- `hex_font` (string)
- `id` (integer)
- `image` (object|null)
- `judgment` (object|null)
- `lines` (array|null)
- `name` (string)
- `pinyin` (string)
- `source` (object)
- `symbolic_meaning` (string|null)
- `trad_chinese` (string)
- `trigram_above` (object|null)
- `trigram_below` (object|null)
- `url` (string)

### `list_sequences` (~67 tokens)

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.

Output parameters:

- `sequences` (array)
- `source` (object)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp#diagnostics

## Score history

- 2026-08-03: 73
- 2026-08-02: 72
- 2026-08-01: 72
- 2026-07-31: 71
- 2026-07-30: 71
- 2026-07-29: 70
- 2026-07-28: 70
- 2026-07-27: 69
- 2026-07-26: 68

## Links

- Remote endpoint: https://mcp.iching.rocks/mcp
- Website: https://iching.rocks/
- Changelog RSS feed: https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/rocks-iching-hexagram-mcp/mcp