easypost

MCP server for EasyPost — rate shipments, buy & refund labels, track packages, verify addresses.

使うべきか

品質と安全性

A
説明の品質
100%
スキーマの完全性
96%
命名の品質
80%
ポイズニングのリスク
100%
権限の一致
100%
プロトコルへの準拠
100%

ツール定義とプロトコルへの準拠に関する自動分析に基づいています。

コンテキストコスト

~2,011トークン数(ツール定義)
~1.4 KB一般的なレスポンスサイズ
注意への影響は中程度(128k コンテキストの 1.57%)

これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。

インストール

ワンクリックインストール

これを `claude_desktop_config.json` ファイルに追加してください:

{
  "mcpServers": {
    "easypost": {
      "url": "https://easypost.usefulapi.io/mcp"
    }
  }
}

リモートエンドポイント

https://easypost.usefulapi.io/mcpstreamable-http

できること

ツール一覧

ツール(11)

🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢easypost_list_shipments(page_size, before_id, after_id, start_datetime, end_datetime, ...)

List shipments on the account, most recent first, with pagination and optional filters. API: GET /shipments.

入力スキーマ

{
  "type": "object",
  "properties": {
    "page_size": {
      "description": "Results per page (max 100).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100
    },
    "before_id": {
      "description": "Return records created before this shipment id.",
      "type": "string"
    },
    "after_id": {
      "description": "Return records created after this shipment id.",
      "type": "string"
    },
    "start_datetime": {
      "description": "ISO 8601 lower bound on created_at.",
      "type": "string"
    },
    "end_datetime": {
      "description": "ISO 8601 upper bound on created_at.",
      "type": "string"
    },
    "purchased": {
      "description": "Filter to only purchased (true) or unpurchased (false) shipments.",
      "type": "boolean"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢easypost_get_shipment(id)

Retrieve a single shipment by id, including its available rates, tracking_code, and postage_label (if purchased). API: GET /shipments/{id}.

入力スキーマ

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Shipment id, e.g. shp_..."
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢easypost_list_trackers(tracking_code, carrier, page_size)

List package trackers, optionally filtered by tracking_code or carrier. API: GET /trackers.

入力スキーマ

{
  "type": "object",
  "properties": {
    "tracking_code": {
      "description": "Filter by carrier tracking code.",
      "type": "string"
    },
    "carrier": {
      "description": "Filter by carrier name, e.g. USPS, UPS, FedEx.",
      "type": "string"
    },
    "page_size": {
      "description": "Results per page (max 100).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢easypost_get_tracker(id)

Retrieve a single tracker by id, including current status and tracking_details history. API: GET /trackers/{id}.

入力スキーマ

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Tracker id, e.g. trk_..."
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢easypost_list_addresses(page_size, before_id, after_id)

List saved addresses on the account, with pagination. API: GET /addresses.

入力スキーマ

{
  "type": "object",
  "properties": {
    "page_size": {
      "description": "Results per page (max 100).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100
    },
    "before_id": {
      "description": "Return records created before this address id.",
      "type": "string"
    },
    "after_id": {
      "description": "Return records created after this address id.",
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢easypost_get_address(id)

Retrieve a single address by id, including verification details. API: GET /addresses/{id}.

入力スキーマ

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Address id, e.g. adr_..."
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡easypost_verify_address(name, company, street1, street2, city, ...)

Create and verify a US or international address, returning deliverability and normalized/corrected fields. No charge. API: POST /addresses (body { address, verify: ["delivery"] }).

入力スキーマ

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "company": {
      "type": "string"
    },
    "street1": {
      "type": "string",
      "description": "Street address line 1"
    },
    "street2": {
      "type": "string"
    },
    "city": {
      "type": "string"
    },
    "state": {
      "description": "2-letter state/province code",
      "type": "string"
    },
    "zip": {
      "type": "string",
      "description": "Postal/ZIP code"
    },
    "country": {
      "description": "2-letter ISO country code, default US",
      "type": "string"
    },
    "phone": {
      "type": "string"
    },
    "email": {
      "type": "string"
    }
  },
  "required": [
    "street1",
    "zip"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡easypost_create_shipment(to_address, from_address, parcel, reference, carrier_accounts)

Create a shipment from a to_address, from_address, and parcel, returning the available RATES from all enabled carriers. This only RATES the shipment — it does NOT purchase a label and does NOT charge the account; buying is a separate step (easypost_buy_shipment). API: POST /shipments (body { shipment }).

入力スキーマ

{
  "type": "object",
  "properties": {
    "to_address": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "company": {
          "type": "string"
        },
        "street1": {
          "type": "string",
          "description": "Street address line 1"
        },
        "street2": {
          "type": "string"
        },
        "city": {
          "type": "string"
        },
        "state": {
          "description": "2-letter state/province code",
          "type": "string"
        },
        "zip": {
          "type": "string",
          "description": "Postal/ZIP code"
        },
        "country": {
          "description": "2-letter ISO country code, default US",
          "type": "string"
        },
        "phone": {
          "type": "string"
        },
        "email": {
          "type": "string"
        }
      },
      "required": [
        "street1",
        "zip"
      ],
      "description": "Destination address."
    },
    "from_address": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "company": {
          "type": "string"
        },
        "street1": {
          "type": "string",
          "description": "Street address line 1"
        },
        "street2": {
          "type": "string"
        },
        "city": {
          "type": "string"
        },
        "state": {
          "description": "2-letter state/province code",
          "type": "string"
        },
        "zip": {
          "type": "string",
          "description": "Postal/ZIP code"
        },
        "country": {
          "description": "2-letter ISO country code, default US",
          "type": "string"
        },
        "phone": {
          "type": "string"
        },
        "email": {
          "type": "string"
        }
      },
      "required": [
        "street1",
        "zip"
      ],
      "description": "Origin/return address."
    },
    "parcel": {
      "type": "object",
      "properties": {
        "length": {
          "description": "inches",
          "type": "number"
        },
        "width": {
          "description": "inches",
          "type": "number"
        },
        "height": {
          "description": "inches",
          "type": "number"
        },
        "weight": {
          "type": "number",
          "description": "weight in OUNCES (required)"
        },
        "predefined_package": {
          "description": "carrier predefined package name, e.g. FlatRateEnvelope",
          "type": "string"
        }
      },
      "required": [
        "weight"
      ],
      "description": "Package dimensions and weight."
    },
    "reference": {
      "description": "Your internal reference string for the shipment.",
      "type": "string"
    },
    "carrier_accounts": {
      "description": "Restrict rating to these carrier_account ids.",
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "required": [
    "to_address",
    "from_address",
    "parcel"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡easypost_create_tracker(tracking_code, carrier)

Start tracking a package by its carrier tracking code. Returns the tracker with current status. No charge. API: POST /trackers (body { tracker }).

入力スキーマ

{
  "type": "object",
  "properties": {
    "tracking_code": {
      "type": "string",
      "description": "The carrier tracking code to track."
    },
    "carrier": {
      "description": "Carrier name, e.g. USPS, UPS, FedEx (helps disambiguate).",
      "type": "string"
    }
  },
  "required": [
    "tracking_code"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🔴easypost_buy_shipment(shipment_id, rate_id, insurance)

PURCHASE a shipping label for a shipment at a chosen rate. WARNING: this CHARGES the EasyPost account balance and is irreversible except by requesting a refund (easypost_refund_shipment). Pick a rate_id from the rates returned by easypost_create_shipment or easypost_get_shipment. API: POST /shipments/{id}/buy (body { rate: { id }, insurance? }).

入力スキーマ

{
  "type": "object",
  "properties": {
    "shipment_id": {
      "type": "string",
      "description": "Shipment id to buy, e.g. shp_..."
    },
    "rate_id": {
      "type": "string",
      "description": "Rate id to purchase (from create_shipment / get_shipment rates)."
    },
    "insurance": {
      "description": "Dollar amount to insure the shipment for, e.g. \"249.99\".",
      "type": "string"
    }
  },
  "required": [
    "shipment_id",
    "rate_id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🔴easypost_refund_shipment(id)

Request a refund (void) of a purchased shipping label. WARNING: reverses a purchase; approval depends on the carrier and label age. API: POST /shipments/{id}/refund.

入力スキーマ

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Shipment id to refund, e.g. shp_..."
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

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