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CoinPaprika

by com.coinpaprika.mcp
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getTickers

Read-onlyIdempotent

Get current prices, market caps and 24h changes for the top cryptocurrencies ranked by market cap. Use for 'top 5 coins', 'top crypto today', 'biggest cryptocurrencies', or a market snapshot. For one specific coin use getTickersById. Read-only; quotes sets the quote currencies (default USD), limit caps results. No API key required.

Input Schema

NameRequiredDescriptionDefault
limitNo
quotesNo
rationaleYesREQUIRED. In 1-2 sentences explain WHY you are calling this tool and what you intend to do with the result. Examples: 'User asked for BTC price; calling getTickersById to fetch current USD value.' 'Building a portfolio dashboard; need OHLCV for ETH last 7 days.' This is logged and reviewed to improve the MCP. Do not include user PII or secrets; use generic descriptions.

Output Schema

NameRequiredDescriptionDefault
tickersYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changed
    • removedOutput schema / properties / tickers / items / additionalProperties
      Removed value: -true
    • addedOutput schema / properties / tickers / items / anyOf
      Added value: +[
+  {
+    "additionalProperties": true,
+    "properties": {
+      "beta_value": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "first_data_at": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "id": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "last_updated": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "max_supply": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "name": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "quotes": {
+        "anyOf": [
+          {
+            "additionalProperties": {
+              "anyOf": [
+                {
+                  "additionalProperties": true,
+                  "properties": {
+                    "ath_date": {
+                      "type": [
+                        "string",
+                        "null"
+                      ]
+                    },
+                    "ath_price": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "market_cap": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "market_cap_change_24h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_12h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_15m": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_1h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_1y": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_24h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_30d": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_30m": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_6h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_change_7d": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "percent_from_price_ath": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "price": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "volume_24h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    },
+                    "volume_24h_change_24h": {
+                      "type": [
+                        "number",
+                        "null"
+                      ]
+                    }
+                  },
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Keyed by quote currency code (e.g. 'USD', 'BTC')."
+      },
+      "rank": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "symbol": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "total_supply": {
+        "description": "May be 0 as a sentinel for tokens with no supply cap. Cross-reference with CoinPaprika docs for sentinel semantics.",
+        "type": [
+          "number",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]
    • removedOutput schema / properties / tickers / items / properties
      Removed value: -{
-  "beta_value": {
-    "type": [
-      "number",
-      "null"
-    ]
-  },
-  "first_data_at": {
-    "type": "string"
-  },
-  "id": {
-    "type": "string"
-  },
-  "last_updated": {
-    "type": "string"
-  },
-  "max_supply": {
-    "type": [
-      "number",
-      "null"
-    ]
-  },
-  "name": {
-    "type": "string"
-  },
-  "quotes": {
-    "additionalProperties": {
-      "additionalProperties": true,
-      "properties": {
-        "ath_date": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "ath_price": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "market_cap": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "market_cap_change_24h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_12h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_15m": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_1h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_1y": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_24h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_30d": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_30m": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_6h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_change_7d": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "percent_from_price_ath": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "price": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "volume_24h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "volume_24h_change_24h": {
-          "type": [
-            "number",
-            "null"
-          ]
-        }
-      },
-      "type": "object"
-    },
-    "description": "Keyed by quote currency code (e.g. 'USD', 'BTC').",
-    "type": "object"
-  },
-  "rank": {
-    "type": "number"
-  },
-  "symbol": {
-    "type": "string"
-  },
-  "total_supply": {
-    "description": "May be 0 as a sentinel for tokens with no supply cap. Cross-reference with CoinPaprika docs for sentinel semantics.",
-    "type": [
-      "number",
-      "null"
-    ]
-  }
-}
    • removedOutput schema / properties / tickers / items / type
      Removed value: -"object"
  2. Changed1 schema field changed
    • removedOutput schema / properties / tickers / items / properties / circulating_supply
      Removed value: -{
-  "type": [
-    "number",
-    "null"
-  ]
-}
  3. Changed2 schema fields changed
    • changedInput schema / properties / rationale / description
      Previous value: -"REQUIRED. In 1-2 sentences explain WHY you are calling this tool and what you intend to do with the result. Examples: 'User asked for BTC price; calling getTickersById to fetch current USD value.' 'Building a portfolio dashboard; need OHLCV for ETH last 7 days.' This is logged and reviewed to improve the MCP. Do not include user PII or secrets — use generic descriptions."New value: +"REQUIRED. In 1-2 sentences explain WHY you are calling this tool and what you intend to do with the result. Examples: 'User asked for BTC price; calling getTickersById to fetch current USD value.' 'Building a portfolio dashboard; need OHLCV for ETH last 7 days.' This is logged and reviewed to improve the MCP. Do not include user PII or secrets; use generic descriptions."
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": true,
+  "properties": {
+    "tickers": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "beta_value": {
+            "type": [
+              "number",
+              "null"
+            ]
+          },
+          "circulating_supply": {
+            "type": [
+              "number",
+              "null"
+            ]
+          },
+          "first_data_at": {
+            "type": "string"
+          },
+          "id": {
+            "type": "string"
+          },
+          "last_updated": {
+            "type": "string"
+          },
+          "max_supply": {
+            "type": [
+              "number",
+              "null"
+            ]
+          },
+          "name": {
+            "type": "string"
+          },
+          "quotes": {
+            "additionalProperties": {
+              "additionalProperties": true,
+              "properties": {
+                "ath_date": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "ath_price": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "market_cap": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "market_cap_change_24h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_12h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_15m": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_1h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_1y": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_24h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_30d": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_30m": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_6h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_change_7d": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "percent_from_price_ath": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "price": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "volume_24h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "volume_24h_change_24h": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                }
+              },
+              "type": "object"
+            },
+            "description": "Keyed by quote currency code (e.g. 'USD', 'BTC').",
+            "type": "object"
+          },
+          "rank": {
+            "type": "number"
+          },
+          "symbol": {
+            "type": "string"
+          },
+          "total_supply": {
+            "description": "May be 0 as a sentinel for tokens with no supply cap. Cross-reference with CoinPaprika docs for sentinel semantics.",
+            "type": [
+              "number",
+              "null"
+            ]
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "tickers"
+  ],
+  "type": "object"
+}
  4. First observed

TDQS

A4.7/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is covered. The description adds useful operational context: no API key is required, quotes sets quote currencies with a USD default, and limit caps results. It does not discuss rate limits or pagination, but the annotations lower the burden.

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

Conciseness5/5

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

The description is compact and front-loaded: purpose first, usage examples second, sibling alternative third, then parameter and auth notes. Every sentence adds useful information without repetition.

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

Completeness5/5

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

An output schema exists, and annotations already cover the read-only, idempotent, open-world behavior. The description supplies enough additional detail about scope, alternative tools, auth, and the two main parameters for an agent to invoke it correctly.

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?

Schema description coverage is low at 33%, with only rationale documented in the schema. The description compensates by explaining that quotes sets quote currencies and defaults to USD, and that limit caps the number of results. It does not specify quote formatting, but the added meaning over the schema is substantial.

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

Purpose5/5

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

The description states a specific verb and resource: fetching current prices, market caps, and 24h changes for top cryptocurrencies ranked by market cap. It clearly distinguishes this ranked-list tool from getTickersById, which is for one specific coin. An agent can identify the tool's purpose without opening the schema.

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 gives explicit example use cases such as 'top 5 coins', 'top crypto today', and 'market snapshot'. It also names the alternative getTickersById for a single coin, making the when-to-use and when-not-to-use distinction clear.

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

All CoinPaprika toolsInspect
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