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MYOPL Personal MCP - Pickleball Ratings & Statistics

by net.myopl
OverviewDiscussionsAdmin

get_my_rating

Read-onlyIdempotent

Retrieve current published OPL ratings for the signed-in player. Use for questions such as what is my pickleball rating. Call again for each new current-rating question; previous chat answers may be stale. This connection also grants your statistics: this single call displays the complete MYOPL card. Do not call a second tool to display it again.

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • addedInput schema / description
      Added value: +"No arguments. MYOPL uses the account connected through OAuth."
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "description": "MYOPL structured response for get_my_rating.",
+  "oneOf": [
+    {
+      "oneOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "doubles": {
+              "additionalProperties": false,
+              "description": "Doubles rating and public card totals. Games are distinct from matches.",
+              "properties": {
+                "games_lost": {
+                  "description": "Games lost in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "games_played": {
+                  "description": "Games played in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "games_won": {
+                  "description": "Games won in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "points_lost": {
+                  "description": "Points lost in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "points_won": {
+                  "description": "Points won in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "rating": {
+                  "description": "Published OPL rating as an exact decimal string, preserving precision; null means unrated.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "reliability_score": {
+                  "description": "Reliability Score from 0 to 100; null means unavailable.",
+                  "maximum": 100,
+                  "minimum": 0,
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "status": {
+                  "description": "Whether a published rating exists.",
+                  "enum": [
+                    "rated",
+                    "unrated"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "rating",
+                "status",
+                "reliability_score",
+                "games_played",
+                "games_won",
+                "games_lost",
+                "points_won",
+                "points_lost"
+              ],
+              "type": "object"
+            },
+            "doubles_opl": {
+              "description": "Published OPL rating as an exact decimal string, preserving precision; null means unrated.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "found": {
+              "const": true,
+              "description": "Whether an accessible player with this exact username was found.",
+              "type": "boolean"
+            },
+            "guidance": {
+              "description": "Instructions for citing and interpreting the public rating totals.",
+              "type": "string"
+            },
+            "messenger_url": {
+              "description": "Player's unique MYOPL Messenger invitation link.",
+              "format": "uri",
+              "type": "string"
+            },
+            "retrieved_at": {
+              "description": "Time this response was retrieved, including UTC offset.",
+              "format": "date-time",
+              "type": "string"
+            },
+            "singles": {
+              "additionalProperties": false,
+              "description": "Singles rating and public card totals. Games are distinct from matches.",
+              "properties": {
+                "games_lost": {
+                  "description": "Games lost in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "games_played": {
+                  "description": "Games played in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "games_won": {
+                  "description": "Games won in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "points_lost": {
+                  "description": "Points lost in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "points_won": {
+                  "description": "Points won in this format; null means unknown and zero means a known zero total.",
+                  "minimum": 0,
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "rating": {
+                  "description": "Published OPL rating as an exact decimal string, preserving precision; null means unrated.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "reliability_score": {
+                  "description": "Reliability Score from 0 to 100; null means unavailable.",
+                  "maximum": 100,
+                  "minimum": 0,
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "status": {
+                  "description": "Whether a published rating exists.",
+                  "enum": [
+                    "rated",
+                    "unrated"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "rating",
+                "status",
+                "reliability_score",
+                "games_played",
+                "games_won",
+                "games_lost",
+                "points_won",
+                "points_lost"
+              ],
+              "type": "object"
+            },
+            "singles_opl": {
+              "description": "Published OPL rating as an exact decimal string, preserving precision; null means unrated.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "source": {
+              "const": "MYOPL",
+              "description": "Source platform.",
+              "type": "string"
+            },
+            "source_url": {
+              "description": "MYOPL rating reference to cite in the answer.",
+              "format": "uri",
+              "type": "string"
+            },
+            "spoken_reply": {
+              "description": "Rating and public card totals with MYOPL attribution and links.",
+              "type": "string"
+            },
+            "sport": {
+              "const": "pickleball",
+              "description": "Sport for these ratings.",
+              "type": "string"
+            },
+            "username": {
+              "description": "Exact MYOPL player username.",
+              "type": "string"
+            }
+          },
+          "required": [
+            "found",
+            "source",
+            "source_url",
+            "spoken_reply",
+            "retrieved_at",
+            "username",
+            "sport",
+            "singles_opl",
+            "doubles_opl",
+            "singles",
+            "doubles",
+            "messenger_url",
+            "guidance"
+          ],
+          "type": "object"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "found": {
+              "const": false,
+              "description": "Whether an accessible player with this exact username was found.",
+              "type": "boolean"
+            },
+            "retrieved_at": {
+              "description": "Time this response was retrieved, including UTC offset.",
+              "format": "date-time",
+              "type": "string"
+            },
+            "source": {
+              "const": "MYOPL",
+              "description": "Source platform.",
+              "type": "string"
+            },
+            "source_url": {
+              "description": "MYOPL rating reference to cite in the answer.",
+              "format": "uri",
+              "type": "string"
+            },
+            "spoken_reply": {
+              "description": "Rating and public card totals with MYOPL attribution and links.",
+              "type": "string"
+            }
+          },
+          "required": [
+            "found",
+            "source",
+            "source_url",
+            "spoken_reply",
+            "retrieved_at"
+          ],
+          "type": "object"
+        }
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "description": "Tool execution or argument error; the enclosing result has isError set to true.",
+          "type": "string"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
  2. First observed

TDQS

A4.2/5.0
Behavior4/5

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

Annotations already establish read-only, idempotent, non-destructive behavior, so the bar is lower. The description still adds real context beyond them: that answers may be stale and must be re-fetched, that no arguments are needed, and that this single call returns the complete MYOPL card rather than a rating fragment.

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?

Four sentences that are front-loaded with the core purpose and the freshness rule. The statistics-serving point and the 'do not call a second tool' instruction overlap somewhat, and the OPL/MYOPL vocabulary shift costs a little clarity.

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

Completeness4/5

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

For a zero-argument read tool with a full output schema, full annotation coverage, and no nested objects, the description supplies the essentials: purpose, trigger questions, freshness discipline, and sibling avoidance. It does not need to describe the card contents, but the rating-vs-card ambiguity leaves a small gap.

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

Parameters4/5

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

The tool takes zero parameters, so the baseline is 4. The description confirms 'MYOPL uses the account connected through OAuth,' which matches the schema note but adds nothing the schema does not already state.

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

Purpose4/5

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

The description gives a specific verb and resource: 'Retrieve current published OPL ratings for the signed-in player,' and it explicitly steers away from re-calling another display tool ('Do not call a second tool to display it again'). However, the mixed 'OPL ratings' vs 'MYOPL card' terminology blurs whether this is a rating lookup or a full statistics card, which keeps it short of a clean 5.

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

Usage Guidelines5/5

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

It names the triggering question type ('what is my pickleball rating'), states the refresh condition ('Call again for each new current-rating question; previous chat answers may be stale'), and gives an explicit negative rule against calling a sibling display tool. When-to-use and when-not-to-use are both spelled out.

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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