diff --git a/api.yaml b/api.yaml
index f8340e4..789f090 100644
--- a/api.yaml
+++ b/api.yaml
@@ -68,6 +68,8 @@ paths:
     $ref: "./resources/logs/log.yml"
   /logs/{id}:
     $ref: "./resources/logs/log_by_id.yml"
+  /monthly_installments/validate:
+    $ref: "./resources/monthly_installments/monthly_installments_validate.yml"
   /orders:
     $ref: "./resources/orders/order.yml"
   /orders/{id}:
diff --git a/requestBodies/monthly_installments/monthly_installments_validate.yml b/requestBodies/monthly_installments/monthly_installments_validate.yml
new file mode 100644
index 0000000..d5133c7
--- /dev/null
+++ b/requestBodies/monthly_installments/monthly_installments_validate.yml
@@ -0,0 +1,6 @@
+description: requested field for monthly installments validate
+content:
+  application/json:
+    schema:
+      $ref: '../../schemas/monthly_installments/monthly_installments_validate.yml'
+required: true
diff --git a/resources/monthly_installments/monthly_installments_validate.yml b/resources/monthly_installments/monthly_installments_validate.yml
new file mode 100644
index 0000000..56fd8bb
--- /dev/null
+++ b/resources/monthly_installments/monthly_installments_validate.yml
@@ -0,0 +1,51 @@
+post:
+  tags:
+    - Monthly Installments
+  operationId: validateMonthlyInstallments
+  summary: Validate Monthly Installments
+  description: |
+    Returns the interest-free monthly installment plans available for a card BIN and an amount, so a checkout can offer only the plans a later charge will accept. Requires monthly installments to be enabled on the company.
+  responses:
+    200:
+      description: successful operation
+      content:
+        application/vnd.conekta-v2.3.0+json:
+          schema:
+            $ref: '../../schemas/monthly_installments/monthly_installments_validate_response.yml'
+      headers:
+        Date:
+          description: The date and time that the response was sent
+          schema:
+            type: string
+            example: "Fri, 03 Feb 2023 16:57:48 GMT"
+        Content-Type:
+          description: The format of the response body
+          schema:
+            type: string
+            example: "application/json; charset=utf-8"
+        Content-Length:
+          description: The length of the response body in bytes
+          schema:
+            type: string
+            example: "245"
+        Connection:
+          description: The type of connection used to transfer the response
+          schema:
+            type: string
+            example: "keep-alive"
+        Conekta-Media-Type:
+          schema:
+            type: string
+            example: conekta-v2.3.0; format=application/json
+    401:
+     $ref: '../errors/401.yml'
+    422:
+     $ref: '../errors/422.yml'
+    500:
+     $ref: '../errors/500.yml'
+  security:
+    - bearerAuth: []
+  requestBody:
+   $ref: '../../requestBodies/monthly_installments/monthly_installments_validate.yml'
+  parameters:
+    - $ref: '../../parameters/commons/headers/accept_language.yml'
diff --git a/schemas/monthly_installments/monthly_installments_validate.yml b/schemas/monthly_installments/monthly_installments_validate.yml
new file mode 100644
index 0000000..71c7b8e
--- /dev/null
+++ b/schemas/monthly_installments/monthly_installments_validate.yml
@@ -0,0 +1,18 @@
+title: monthly installments validate request
+description: BIN and amount to evaluate for interest-free monthly installments
+type: object
+required:
+  - bin
+  - amount
+properties:
+  bin:
+    type: string
+    description: "First 6 or 8 digits of the card number (Bank Identification Number). An 8 digit BIN that yields no match is retried with its first 6 digits."
+    example: "411111"
+    minLength: 6
+    maxLength: 8
+    pattern: '^[0-9]{6}(?:[0-9]{2})?$'
+  amount:
+    type: integer
+    description: "Amount to charge in the smallest currency unit (cents for MXN). Used to compute the monthly fee of each available plan."
+    example: 350000
diff --git a/schemas/monthly_installments/monthly_installments_validate_response.yml b/schemas/monthly_installments/monthly_installments_validate_response.yml
new file mode 100644
index 0000000..2e15515
--- /dev/null
+++ b/schemas/monthly_installments/monthly_installments_validate_response.yml
@@ -0,0 +1,44 @@
+title: monthly_installments_validate_response
+description: monthly installments validate response
+type: object
+required:
+  - available_installments
+  - bin_info
+properties:
+  available_installments:
+    title: monthly_installments_validate_response_available_installments
+    type: array
+    description: "Interest-free monthly installment plans available for this card and amount. Empty when the card does not qualify for monthly installments, for example a debit card or a credit card not issued in Mexico. An empty array is not an error."
+    items:
+      type: object
+      required:
+        - months
+        - amount
+      properties:
+        months:
+          type: integer
+          description: "Number of monthly installments of the plan. One of 3, 6, 9, 12, 18 or 24."
+          example: 3
+        amount:
+          type: integer
+          description: "Amount of each monthly installment in the smallest currency unit, rounded up."
+          example: 116667
+  bin_info:
+    type: object
+    required:
+      - country
+      - scheme
+      - issuer
+    properties:
+      country:
+        type: string
+        description: "Country that issued the card. Monthly installments only apply to mx, with the exception of American Express."
+        example: "mx"
+      scheme:
+        type: string
+        description: "Card scheme. Monthly installments only apply to credit."
+        example: "credit"
+      issuer:
+        type: string
+        description: "Bank that issued the card."
+        example: "banamex"