AstroWay Tarot

RWS: Court Card Cross-Sum

astroway_tarot_rider_waite_cross_sum

Read-onlyIdempotent

Birth-card meditation pair for court-card practice.

[Group: Tarot: Rider-Waite-Smith] [Endpoint: POST /v1/tarot/rider-waite/cross-sum] [Required: date] [Cost: 10 credits (Tier 1)]

Input Schema

Name	Required	Description
`art`	No	Card art set, e.g. rws-1909, rws-restored, rws-vector. GET /v1/tarot/decks lists the sets per deck.
`date`	Yes
`fields`	No	Compact mode: comma-separated dotted paths to keep, relative to `data`, e.g. "planets.name,planets.longitude,houses.cusp". Omit for the whole response.
`precision`	No	Compact mode: round fractional numbers to this many decimals. Longitudes carry 14 by default; 2 is finer than any chart is drawn.

Output Schema

Name	Required	Description	Default
`date`	No
`meditationPair`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedNov 7, 2026

removedOutput schema / properties / date / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / date / type
```
Added value: +[
+  "string",
+  "null"
+]
```

changedOutput schema / properties / meditationPair / anyOf

Previous value: -[
-  {
-    "items": {
-      "anyOf": [
-        {
-          "additionalProperties": {},
-          "properties": {
-            "astrology": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "category": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "name": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "number": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "numerology": {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "reversed": {
-              "anyOf": [
-                {
-                  "additionalProperties": {},
-                  "properties": {
-                    "keywords": {
-                      "anyOf": [
-                        {
-                          "items": {
-                            "anyOf": [
-                              {
-                                "type": "string"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "type": "array"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "meaning": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "slug": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "upright": {
-              "anyOf": [
-                {
-                  "additionalProperties": {},
-                  "properties": {
-                    "keywords": {
-                      "anyOf": [
-                        {
-                          "items": {
-                            "anyOf": [
-                              {
-                                "type": "string"
-                              },
-                              {
-                                "type": "null"
-                              }
-                            ]
-                          },
-                          "type": "array"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "meaning": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "yes": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            }
-          },
-          "type": "object"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "type": "array"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "items": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "astrology": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "category": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "name": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "number": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "numerology": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "reversed": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "keywords": {
+                      "anyOf": [
+                        {
+                          "items": {
+                            "type": [
+                              "string",
+                              "null"
+                            ]
+                          },
+                          "type": "array"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ]
+                    },
+                    "meaning": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "slug": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "upright": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "keywords": {
+                      "anyOf": [
+                        {
+                          "items": {
+                            "type": [
+                              "string",
+                              "null"
+                            ]
+                          },
+                          "type": "array"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ]
+                    },
+                    "meaning": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "yes": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "type": "array"
+  },
+  {
+    "type": "null"
+  }
+]

Changed1 schema field changedOct 6, 2026

addedInput schema / properties / art

Added value: +{
+  "description": "Card art set, e.g. rws-1909, rws-restored, rws-vector. GET /v1/tarot/decks lists the sets per deck.",
+  "maxLength": 40,
+  "type": "string"
+}

First observedOct 5, 2026

TDQS

C2.4/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds genuinely useful context the annotations lack: the endpoint, the required `date`, and a 10-credit Tier 1 cost. It says nothing about what the computed pair contains or how failures are reported, but given annotation coverage this is an adequate addition.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

It is short and front-loads the one-line purpose before the bracketed metadata, with no filler. But the single sentence is too thin for the ambiguity of the tool, and the metadata block does the informational work the prose should be doing.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values needn't be explained, and annotations cover safety. What is missing is the core semantics of a cross-sum and any disambiguation from the dense cluster of Rider-Waite tarot siblings, which for a paid (10-credit) call is a real gap.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 75% and `art`, `fields`, and `precision` are well documented in the schema itself. The description only echoes "[Required: date]" and adds no meaning to `date` (no format guidance, timezone, or whether it is a birth date or a query date), which is the one genuinely ambiguous parameter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose2/5

Does the description clearly state what the tool does and how it differs from similar tools?

"Birth-card meditation pair for court-card practice" restates the title's topic without naming an operation or the resource it returns. An agent cannot tell what a "cross-sum" actually computes, nor how this differs from astroway_tarot_rider_waite_birth_card, astroway_tarot_rider_waite_courts, or astroway_tarot_rider_waite_soul_personality_card.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase "for court-card practice" implies a domain but gives no when-to-use rule, no exclusions, and no pointer to the many overlapping RWS sibling tools. With nine-plus Rider-Waite tarot siblings, the agent is left to guess which to call.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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