EximAgent

Repeat-buyer cohort analysis

exim__shipments__buyer-recurrence

Read-onlyIdempotent

Returns repeat buyers, retention and shipment scale for an HS code, market or named buyer. Use it to judge how sticky buyers are in a market.

Input Schema

Name	Required	Description
`to`	No	Latest month, YYYY-MM.
`from`	No	Earliest month, YYYY-MM.
`buyer`	No	buyer company name filter
`hsCode`	No	HS code at 2, 4 or 6 digits; shorter codes match the whole family (0901 = all coffee). Do not pad with zeros (090100 matches nothing).
`source`	No	dataset source filter
`originCountry`	No	Origin (exporting) country, ISO2 code (e.g. VN).
`destinationCountry`	No	Destination (importing) country, ISO2 code (e.g. US, DE).

Output Schema

Name	Required	Description	Default
`data`	Yes
`stats`	No
`_debug`	No
`summary`	Yes
`warnings`	No
`nextActions`	Yes
`correlationId`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedOct 14, 2026

changedInput schema / not / anyOf

Previous value: -[
-  {
-    "not": {
-      "anyOf": [
-        {
-          "properties": {
-            "hs6": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "hs6"
-          ]
-        },
-        {
-          "properties": {
-            "dest": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "dest"
-          ]
-        }
-      ]
-    }
-  }
-]New value: +[
+  {
+    "not": {
+      "anyOf": [
+        {
+          "properties": {
+            "hsCode": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "hsCode"
+          ]
+        },
+        {
+          "properties": {
+            "destinationCountry": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "destinationCountry"
+          ]
+        }
+      ]
+    }
+  }
+]

removedInput schema / properties / dest

Removed value: -{
-  "description": "destination country (ISO 2) filter",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / destinationCountry

Added value: +{
+  "description": "Destination (importing) country, ISO2 code (e.g. US, DE).",
+  "maxLength": 8000,
+  "type": "string"
+}

changedInput schema / properties / from / description

Previous value: -"earliest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"New value: +"Earliest month, YYYY-MM."

removedInput schema / properties / hs6

Removed value: -{
-  "description": "HS code at ANY granularity — 2/4/6-digit; a shorter code is a broader family (e.g. 0901 = all coffee). Do NOT pad to 6 digits: 090100 matches nothing.",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / hsCode

Added value: +{
+  "description": "HS code at 2, 4 or 6 digits; shorter codes match the whole family (0901 = all coffee). Do not pad with zeros (090100 matches nothing).",
+  "maxLength": 8000,
+  "type": "string"
+}

removedInput schema / properties / origin

Removed value: -{
-  "description": "origin country (ISO 2) filter",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / originCountry

Added value: +{
+  "description": "Origin (exporting) country, ISO2 code (e.g. VN).",
+  "maxLength": 8000,
+  "type": "string"
+}

changedInput schema / properties / to / description

Previous value: -"latest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"New value: +"Latest month, YYYY-MM."

Changed9 schema fields changedOct 14, 2026

changedInput schema / not / anyOf

Previous value: -[
-  {
-    "not": {
-      "anyOf": [
-        {
-          "properties": {
-            "hsCode": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "hsCode"
-          ]
-        },
-        {
-          "properties": {
-            "destinationCountry": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "destinationCountry"
-          ]
-        }
-      ]
-    }
-  }
-]New value: +[
+  {
+    "not": {
+      "anyOf": [
+        {
+          "properties": {
+            "hs6": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "hs6"
+          ]
+        },
+        {
+          "properties": {
+            "dest": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "dest"
+          ]
+        }
+      ]
+    }
+  }
+]

addedInput schema / properties / dest

Added value: +{
+  "description": "destination country (ISO 2) filter",
+  "maxLength": 8000,
+  "type": "string"
+}

removedInput schema / properties / destinationCountry

Removed value: -{
-  "description": "Destination (importing) country, ISO2 code (e.g. US, DE).",
-  "maxLength": 8000,
-  "type": "string"
-}

changedInput schema / properties / from / description

Previous value: -"Earliest month, YYYY-MM."New value: +"earliest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"

addedInput schema / properties / hs6

Added value: +{
+  "description": "HS code at ANY granularity — 2/4/6-digit; a shorter code is a broader family (e.g. 0901 = all coffee). Do NOT pad to 6 digits: 090100 matches nothing.",
+  "maxLength": 8000,
+  "type": "string"
+}

removedInput schema / properties / hsCode

Removed value: -{
-  "description": "HS code at 2, 4 or 6 digits; shorter codes match the whole family (0901 = all coffee). Do not pad with zeros (090100 matches nothing).",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / origin

Added value: +{
+  "description": "origin country (ISO 2) filter",
+  "maxLength": 8000,
+  "type": "string"
+}

removedInput schema / properties / originCountry

Removed value: -{
-  "description": "Origin (exporting) country, ISO2 code (e.g. VN).",
-  "maxLength": 8000,
-  "type": "string"
-}

changedInput schema / properties / to / description

Previous value: -"Latest month, YYYY-MM."New value: +"latest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"

Changed9 schema fields changedOct 14, 2026

changedInput schema / not / anyOf

Previous value: -[
-  {
-    "not": {
-      "anyOf": [
-        {
-          "properties": {
-            "hs6": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "hs6"
-          ]
-        },
-        {
-          "properties": {
-            "dest": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "dest"
-          ]
-        }
-      ]
-    }
-  }
-]New value: +[
+  {
+    "not": {
+      "anyOf": [
+        {
+          "properties": {
+            "hsCode": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "hsCode"
+          ]
+        },
+        {
+          "properties": {
+            "destinationCountry": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "destinationCountry"
+          ]
+        }
+      ]
+    }
+  }
+]

removedInput schema / properties / dest

Removed value: -{
-  "description": "destination country (ISO 2) filter",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / destinationCountry

Added value: +{
+  "description": "Destination (importing) country, ISO2 code (e.g. US, DE).",
+  "maxLength": 8000,
+  "type": "string"
+}

changedInput schema / properties / from / description

Previous value: -"earliest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"New value: +"Earliest month, YYYY-MM."

removedInput schema / properties / hs6

Removed value: -{
-  "description": "HS code at ANY granularity — 2/4/6-digit; a shorter code is a broader family (e.g. 0901 = all coffee). Do NOT pad to 6 digits: 090100 matches nothing.",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / hsCode

Added value: +{
+  "description": "HS code at 2, 4 or 6 digits; shorter codes match the whole family (0901 = all coffee). Do not pad with zeros (090100 matches nothing).",
+  "maxLength": 8000,
+  "type": "string"
+}

removedInput schema / properties / origin

Removed value: -{
-  "description": "origin country (ISO 2) filter",
-  "maxLength": 8000,
-  "type": "string"
-}

addedInput schema / properties / originCountry

Added value: +{
+  "description": "Origin (exporting) country, ISO2 code (e.g. VN).",
+  "maxLength": 8000,
+  "type": "string"
+}

changedInput schema / properties / to / description

Previous value: -"latest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)"New value: +"Latest month, YYYY-MM."

Changed16 schema fields changedOct 13, 2026

addedInput schema / not

Added value: +{
+  "anyOf": [
+    {
+      "not": {
+        "anyOf": [
+          {
+            "properties": {
+              "hs6": {
+                "minLength": 1,
+                "type": "string"
+              }
+            },
+            "required": [
+              "hs6"
+            ]
+          },
+          {
+            "properties": {
+              "dest": {
+                "minLength": 1,
+                "type": "string"
+              }
+            },
+            "required": [
+              "dest"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}

removedInput schema / properties / --buyer

Removed value: -{
-  "description": "buyer company name filter",
-  "type": "string"
-}

removedInput schema / properties / --dest

Removed value: -{
-  "description": "destination country (ISO 2) filter",
-  "type": "string"
-}

removedInput schema / properties / --from

Removed value: -{
-  "description": "earliest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)",
-  "pattern": "^[0-9]{4}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[01]))?)?$",
-  "type": "string"
-}

removedInput schema / properties / --hs6

Removed value: -{
-  "description": "HS code at ANY granularity — 2/4/6-digit; a shorter code is a broader family (e.g. 0901 = all coffee). Do NOT pad to 6 digits: 090100 matches nothing.",
-  "type": "string"
-}

removedInput schema / properties / --origin

Removed value: -{
-  "description": "origin country (ISO 2) filter",
-  "type": "string"
-}

removedInput schema / properties / --source

Removed value: -{
-  "description": "dataset source filter",
-  "type": "string"
-}

removedInput schema / properties / --to

Removed value: -{
-  "description": "latest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)",
-  "pattern": "^[0-9]{4}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[01]))?)?$",
-  "type": "string"
-}

addedInput schema / properties / buyer

Added value: +{
+  "description": "buyer company name filter",
+  "maxLength": 8000,
+  "type": "string"
+}

addedInput schema / properties / dest

Added value: +{
+  "description": "destination country (ISO 2) filter",
+  "maxLength": 8000,
+  "type": "string"
+}

addedInput schema / properties / from

Added value: +{
+  "description": "earliest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)",
+  "maxLength": 8000,
+  "pattern": "^[0-9]{4}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[01]))?)?$",
+  "type": "string"
+}

addedInput schema / properties / hs6

Added value: +{
+  "description": "HS code at ANY granularity — 2/4/6-digit; a shorter code is a broader family (e.g. 0901 = all coffee). Do NOT pad to 6 digits: 090100 matches nothing.",
+  "maxLength": 8000,
+  "type": "string"
+}

addedInput schema / properties / origin

Added value: +{
+  "description": "origin country (ISO 2) filter",
+  "maxLength": 8000,
+  "type": "string"
+}

addedInput schema / properties / source

Added value: +{
+  "description": "dataset source filter",
+  "maxLength": 8000,
+  "type": "string"
+}

addedInput schema / properties / to

Added value: +{
+  "description": "latest month (YYYY-MM; YYYY or YYYY-MM-DD also accepted)",
+  "maxLength": 8000,
+  "pattern": "^[0-9]{4}(-(0[1-9]|1[0-2])(-(0[1-9]|[12][0-9]|3[01]))?)?$",
+  "type": "string"
+}

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$defs": {
+    "value0": {
+      "additionalProperties": false,
+      "properties": {
+        "buyerRetentionRate": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "buyers": {
+          "$ref": "#/$defs/value1"
+        },
+        "newBuyerCount": {
+          "type": "integer"
+        },
+        "recurringBuyerRatio": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "repeatShipmentRatio": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "returningBuyerCount": {
+          "type": "integer"
+        }
+      },
+      "required": [
+        "buyerRetentionRate",
+        "buyers",
+        "newBuyerCount",
+        "recurringBuyerRatio",
+        "repeatShipmentRatio",
+        "returningBuyerCount"
+      ],
+      "type": "object"
+    },
+    "value1": {
+      "anyOf": [
+        {
+          "items": {
+            "$ref": "#/$defs/value2"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "value2": {
+      "additionalProperties": false,
+      "properties": {
+        "activeMonths": {
+          "type": "integer"
+        },
+        "buyer": {
+          "type": "string"
+        },
+        "firstSeen": {
+          "type": "string"
+        },
+        "lastSeen": {
+          "type": "string"
+        },
+        "repeatShipmentRatio": {
+          "type": "number"
+        },
+        "shipmentCount": {
+          "type": "integer"
+        },
+        "totalValueUsd": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "totalWeightKg": {
+          "type": "number"
+        },
+        "uniqueSellers": {
+          "type": "integer"
+        }
+      },
+      "required": [
+        "activeMonths",
+        "buyer",
+        "firstSeen",
+        "lastSeen",
+        "repeatShipmentRatio",
+        "shipmentCount",
+        "totalValueUsd",
+        "totalWeightKg",
+        "uniqueSellers"
+      ],
+      "type": "object"
+    },
+    "value3": {
+      "anyOf": [
+        {
+          "items": {
+            "type": [
+              "null",
+              "boolean",
+              "number",
+              "string",
+              "array",
+              "object"
+            ]
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "value4": {
+      "anyOf": [
+        {
+          "items": {
+            "$ref": "#/$defs/value5"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "value5": {
+      "additionalProperties": false,
+      "properties": {
+        "command": {
+          "type": "string"
+        },
+        "cost": {
+          "type": "string"
+        },
+        "label": {
+          "type": "string"
+        },
+        "rationale": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "command",
+        "cost",
+        "label",
+        "rationale"
+      ],
+      "type": "object"
+    },
+    "value6": {
+      "anyOf": [
+        {
+          "additionalProperties": {
+            "type": "number"
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "value7": {
+      "anyOf": [
+        {
+          "items": {
+            "$ref": "#/$defs/value8"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "value8": {
+      "additionalProperties": false,
+      "properties": {
+        "code": {
+          "type": "string"
+        },
+        "message": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "type": "object"
+    },
+    "value9": {
+      "anyOf": [
+        {
+          "additionalProperties": {
+            "type": [
+              "null",
+              "boolean",
+              "number",
+              "string",
+              "array",
+              "object"
+            ]
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "additionalProperties": false,
+  "properties": {
+    "_debug": {
+      "$ref": "#/$defs/value9"
+    },
+    "correlationId": {
+      "type": "string"
+    },
+    "data": {
+      "additionalProperties": false,
+      "properties": {
+        "context": {
+          "type": [
+            "null",
+            "boolean",
+            "number",
+            "string",
+            "array",
+            "object"
+          ]
+        },
+        "cursor": {
+          "type": "string"
+        },
+        "has_more": {
+          "type": "boolean"
+        },
+        "items": {
+          "anyOf": [
+            {
+              "items": {
+                "$ref": "#/$defs/value0"
+              },
+              "type": "array"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "context",
+        "has_more",
+        "items"
+      ],
+      "type": "object"
+    },
+    "nextActions": {
+      "$ref": "#/$defs/value4"
+    },
+    "stats": {
+      "$ref": "#/$defs/value6"
+    },
+    "summary": {
+      "type": "string"
+    },
+    "warnings": {
+      "$ref": "#/$defs/value7"
+    }
+  },
+  "required": [
+    "data",
+    "nextActions",
+    "summary"
+  ],
+  "type": "object"
+}

First observedOct 9, 2026

TDQS

A3.6/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is fully covered by structured data. The description adds the output concept (repeat buyers, retention, scale) but omits the meaningful hidden constraint — that at least one of hsCode or destinationCountry must be supplied — which the agent only discovers by decoding the schema's nested not/anyOf.

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?

Two sentences, no filler, with the return-value summary front-loaded and the use case trailing. Nothing is repeated from the title or schema.

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?

With an output schema present and annotations covering safety, the description does not need to explain return values, and the schema covers all seven parameters. The only real omission is the effective requirement that hsCode or destinationCountry be present, which is encoded opaquely in the schema rather than surfaced in prose.

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 description coverage is 100%, so every parameter is already documented, including the valuable hsCode guidance about 2/4/6-digit matching and not padding with zeros. The description's mention of "HS code, market or named buyer" loosely maps to hsCode/destinationCountry/buyer but adds no syntax or semantics beyond the schema, so baseline 3 applies.

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 states a specific verb (returns) and resource set (repeat buyers, retention, shipment scale) scoped to an HS code, market or named buyer, so an agent can tell it produces cohort stickiness metrics rather than raw shipments. It does not, however, differentiate itself from adjacent siblings like exim__market__churned or exim__companies__customers, which callers might reasonably confuse it with.

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

Usage Guidelines3/5

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

"Use it to judge how sticky buyers are in a market" gives an explicit intended-use case, which is more than nothing. But there is no guidance on when NOT to use it and no named alternative for related questions (churn, new entrants, competitor customers), so routing between this and siblings is left to inference.

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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Repeat-buyer cohort analysis

Input Schema

Output Schema

Schema Changelog

TDQS

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