AstroWay Platform

Stream Eclipse Totality

astroway_stream_eclipse_totality

Next solar+lunar eclipses with totality info.

[Group: Real-time Streaming] [Endpoint: POST /v1/stream/eclipse-totality] [Cost: 10 credits (Tier 1)]

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "astroway_stream_eclipse_totality"
  }
}

Input Schema

Name	Required	Description
`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.
`latitude`	No
`longitude`	No
`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
`note`	No
`pricing`	No
`nextLunar`	No
`nextSolar`	No
`timestamp`	No
`transport`	No
`sseUpgrade`	No
`nextEventAt`	No
`tickSeconds`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed20 schema fields changedNov 7, 2026

removedInput schema / properties / latitude / anyOf

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

addedInput schema / properties / latitude / type
```
Added value: +[
+  "number",
+  "null"
+]
```

removedInput schema / properties / longitude / anyOf

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

addedInput schema / properties / longitude / type
```
Added value: +[
+  "number",
+  "null"
+]
```

removedOutput schema / properties / nextEventAt / anyOf

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

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

changedOutput schema / properties / nextLunar / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "beginAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "daysUntil": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "durationHours": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "isTotal": {
-        "anyOf": [
-          {
-            "type": "boolean"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "longitude": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "maxAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "sign": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "type": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "beginAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "daysUntil": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "durationHours": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "endAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "isTotal": {
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "longitude": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "maxAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "sign": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "type": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / nextSolar / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "beginAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "daysUntil": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "durationHours": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "endAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "isTotal": {
-        "anyOf": [
-          {
-            "type": "boolean"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "longitude": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "maxAt": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "sign": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "type": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "beginAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "daysUntil": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "durationHours": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "endAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "isTotal": {
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "longitude": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "maxAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "sign": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "type": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / note / anyOf

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

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

removedOutput schema / properties / pricing / anyOf

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

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

removedOutput schema / properties / sseUpgrade / anyOf

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

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

removedOutput schema / properties / tickSeconds / anyOf

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

addedOutput schema / properties / tickSeconds / type
```
Added value: +[
+  "number",
+  "null"
+]
```

removedOutput schema / properties / timestamp / anyOf

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

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

removedOutput schema / properties / transport / anyOf

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

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

First observedOct 5, 2026

TDQS

C2.7/5.0

Behavior3/5

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

The description adds genuinely useful behavioral context beyond the annotations: the POST endpoint path and a cost of 10 credits (Tier 1). However, it never explains what 'stream' means here—whether the call returns a single eclipse snapshot, an SSE/chunked stream, or a long-lived subscription—which is the most important behavior for an agent to know given readOnlyHint=false and idempotentHint=false. It also omits any auth or rate-limit notes.

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

Conciseness4/5

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

The definition is short and front-loaded, with the purpose first and the group/endpoint/cost metadata as a compact trailer. Every line carries information, though the single-sentence purpose is arguably too terse for a tool with a 4-parameter, streaming surface.

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-value shape need not be explained, but the description still leaves critical gaps for a streaming, cost-incurring, location-aware tool: streaming mechanics, the effect of omitting coordinates, and how it differs from eclipse_incoming. For a 4-parameter endpoint with half its parameters undocumented, this is under-specified.

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

Parameters2/5

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

Schema description coverage is only 50%: 'fields' and 'precision' are documented in the schema, but 'latitude' and 'longitude' have no description anywhere. The tool description contributes nothing about parameters—not even what happens when latitude/longitude are omitted (geocentric vs. topocentric, default observer location), which is a meaningful semantic gap for an eclipse tool.

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

Purpose3/5

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

The phrase "Next solar+lunar eclipses with totality info" identifies the resource and a distinguishing attribute (totality), but there is no verb and no statement of what the tool actually returns or does (one-shot forecast, stream, subscription). It does not distinguish itself from the near-identical sibling astroway_stream_eclipse_incoming, leaving the agent unable to choose between them from the description alone.

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?

There is no when-to-use guidance, no prerequisites, and no mention of the closest alternative (eclipse_incoming, or webhooks_eclipse_alert for push-based delivery). The only contextual hint is the bracketed '[Group: Real-time Streaming]' label, which implies a category but not a selection rule.

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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