io.github.shaozhengkun123/yarrow
REMOTE · YARROW-ORACLE.SHAOZHENGKUN.WORKERS.DEV · SCANNED AUG 3
I-Ching (周易) oracle: cast a hexagram, read classical commentary, get a reflection. Bilingual.
Available components
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. How we score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability67
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 824 tokens (~137/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage92
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 76% of tool parameters carry a description.Partial
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · yarrow-oracle.shaozhengkun.workers.dev
claude mcp add --transport http shaozhengkun123-yarrow https://yarrow-oracle.shaozhengkun.workers.dev/mcp
[mcp_servers.shaozhengkun123-yarrow] url = "https://yarrow-oracle.shaozhengkun.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"shaozhengkun123-yarrow": {
"type": "remote",
"url": "https://yarrow-oracle.shaozhengkun.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add shaozhengkun123-yarrow --url https://yarrow-oracle.shaozhengkun.workers.dev/mcp --transport streamable-http
mcp_servers:
shaozhengkun123-yarrow:
url: "https://yarrow-oracle.shaozhengkun.workers.dev/mcp" {
"mcpServers": {
"shaozhengkun123-yarrow": {
"type": "http",
"url": "https://yarrow-oracle.shaozhengkun.workers.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Aug 26 +1
- Schema quality: 557 → 824 ▼ functional
- New tool “two_lenses” functional
- New tool “cast_tarot” functional
- 31 Jul 26 −1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 29 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Jul 26 +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.
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Jul 26 55
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 3 Aug 2026 · Probed https://yarrow-oracle.shaozhengkun.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=shaozhengkun.workers.dev | CN=YE1,O=Let's Encrypt,C=US | 23 Jul 2026 | 21 Oct 2026 | ECDSA 256 | ECDSA-SHA384 | 6a40b8f6da264b7ecb4e86def2031c3e958 |
| SANs: *.shaozhengkun.workers.dev, shaozhengkun.workers.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
DNSSEC insecure
Validation of yarrow-oracle.shaozhengkun.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://yarrow-oracle.shaozhengkun.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://yarrow-oracle.shaozhengkun.workers.dev/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.
cast_hexagram ~171
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).
| Name | Type | Req | Description |
|---|---|---|---|
| method | string | — | coins = three-coin toss (most common); yarrow = traditional 50-stalk probabilities; random = uniformly pick one of the 64 hexagrams with no moving lines. |
| question | string | — | The question being asked (not used for casting, returned in result for context). |
| seed | string|number | — | Optional seed for deterministic casting. |
No output schema declared.
No examples provided.
cast_tarot ~96
Draw one upright Major Arcana card for reflection. Uses a deterministic one-card Waite-Smith Major Arcana method and returns a selected source excerpt from Arthur Edward Waite's public-domain 1910/1922 text. Pass `seed` to reproduce the same draw.
| Name | Type | Req | Description |
|---|---|---|---|
| question | string | — | The question being reflected on (not used to influence the draw). |
| seed | string|number | — | Optional deterministic draw seed. |
No output schema declared.
No examples provided.
divine ~190
Ask the I Ching. See your next step. Cast a hexagram, show the classical sources first, then offer a thoughtful reflection grounded in those sources. Sources first. Reflection, not prediction. The divine name remains stable for oracle/divination client compatibility. Supports English, Chinese, Japanese, Korean, Spanish, French, German, Portuguese, Italian, Russian, Arabic, Hindi, Indonesian, and English+Chinese bilingual output. Daily quota: 30 completed readings per device_id (or per anonymous IP if no device_id is supplied); timeout, provider failure, incomplete response, and cancellation do not consume it.
| Name | Type | Req | Description |
|---|---|---|---|
| device_id | string | — | Optional opaque identifier for quota tracking. If omitted, IP-derived. |
| locale | string | — | — |
| method | string | — | — |
| question | string | yes | The question to consult on. |
| seed | string|number | — | Deterministic cast seed. |
No output schema declared.
No examples provided.
lookup_hexagram ~122
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, Yarrow's separately labelled Chinese reading aid, and historical anecdote — with available Chinese and English source material.
| Name | Type | Req | Description |
|---|---|---|---|
| compact | boolean | — | If true, omit authorities (long classical commentary). Returns only structural fields. |
| locale | string | — | — |
| number | integer | yes | Hexagram number 1-64 in King Wen sequence. |
No output schema declared.
No examples provided.
lookup_yilin ~74
Look up the 焦氏易林 verse for a primary hexagram changing into another hexagram. This is a local classical-source lookup, not an AI reading.
| Name | Type | Req | Description |
|---|---|---|---|
| changing_number | integer | yes | Changing hexagram number 1-64. |
| primary_number | integer | yes | Primary hexagram number 1-64. |
No output schema declared.
No examples provided.
two_lenses ~171
Bring one real question to two independent symbolic traditions: a source-first I-Ching cast and one upright Waite-Smith Major Arcana card. Returns a clear calibrated answer first, then five grounded sections covering the I Ching lens, Tarot lens, shared themes, different emphasis, and next step. Direction without guaranteed prediction or mutual-confirmation claims. Daily quota is shared with completed divine readings.
| Name | Type | Req | Description |
|---|---|---|---|
| device_id | string | — | Optional opaque identifier for quota tracking. If omitted, IP-derived. |
| iching_seed | string|number | — | Deterministic I-Ching cast seed. |
| locale | string | — | — |
| method | string | — | — |
| question | string | yes | The same real question for both lenses. |
| tarot_seed | string|number | — | Deterministic Tarot draw seed. |
No output schema declared.
No examples provided.