diff --git a/src/main/kotlin/fr/dcproject/component/article/routes/FindArticles.kt b/src/main/kotlin/fr/dcproject/component/article/routes/FindArticles.kt
index 2d8bd9a..44d930d 100644
--- a/src/main/kotlin/fr/dcproject/component/article/routes/FindArticles.kt
+++ b/src/main/kotlin/fr/dcproject/component/article/routes/FindArticles.kt
@@ -38,7 +38,6 @@ object FindArticles {
         fun validate() = Validation<ArticlesRequest> {
             ArticlesRequest::page {
                 minimum(1)
-                maximum(100)
             }
             ArticlesRequest::limit {
                 minimum(1)
diff --git a/src/main/kotlin/fr/dcproject/component/article/routes/UpsertArticle.kt b/src/main/kotlin/fr/dcproject/component/article/routes/UpsertArticle.kt
index 20beaef..57fce8a 100644
--- a/src/main/kotlin/fr/dcproject/component/article/routes/UpsertArticle.kt
+++ b/src/main/kotlin/fr/dcproject/component/article/routes/UpsertArticle.kt
@@ -1,5 +1,6 @@
 package fr.dcproject.component.article.routes
 
+import fr.dcproject.application.http.badRequestIfNotValid
 import fr.dcproject.common.security.assert
 import fr.dcproject.common.utils.receiveOrBadRequest
 import fr.dcproject.component.article.ArticleAccessControl
@@ -12,6 +13,11 @@ import fr.dcproject.component.auth.mustBeAuth
 import fr.dcproject.component.notification.ArticleUpdateNotification
 import fr.dcproject.component.notification.Publisher
 import fr.dcproject.component.workgroup.database.WorkgroupRef
+import io.konform.validation.Validation
+import io.konform.validation.jsonschema.maxItems
+import io.konform.validation.jsonschema.maxLength
+import io.konform.validation.jsonschema.minItems
+import io.konform.validation.jsonschema.minLength
 import io.ktor.application.ApplicationCall
 import io.ktor.application.call
 import io.ktor.locations.KtorExperimentalLocationsAPI
@@ -35,11 +41,31 @@ object UpsertArticle {
             val draft: Boolean = false,
             val versionId: UUID,
             val workgroup: WorkgroupRef? = null,
-        )
+        ) {
+            fun validate() = Validation<Input> {
+                Input::title {
+                    minLength(5)
+                    maxLength(80)
+                }
+                Input::content {
+                    minLength(50)
+                    maxLength(6000)
+                }
+                Input::description {
+                    minLength(50)
+                    maxLength(6000)
+                }
+                Input::tags {
+                    minItems(0)
+                    maxItems(15)
+                }
+            }.validate(this)
+        }
     }
 
     fun Route.upsertArticle(repo: ArticleRepository, publisher: Publisher, ac: ArticleAccessControl) {
         suspend fun ApplicationCall.convertRequestToEntity(): ArticleForUpdate = receiveOrBadRequest<Input>().run {
+            validate().badRequestIfNotValid()
             ArticleForUpdate(
                 id = id ?: UUID.randomUUID(),
                 title = title,
diff --git a/src/main/resources/openapi.yaml b/src/main/resources/openapi.yaml
index 4d8d410..17d5216 100644
--- a/src/main/resources/openapi.yaml
+++ b/src/main/resources/openapi.yaml
@@ -71,16 +71,21 @@ paths:
                     Limit power of press
                 content:
                   type: string
+                  minLength: 50
+                  maxLength: 6000
                   example:
                     Lorem upsum...
                 description:
                   type: string
+                  minLength: 50
+                  maxLength: 6000
                   example:
                     I think is the bether choice
                 tags:
                   type: array
                   items:
                     type: string
+                    maxItems: 15
                   default: [ ]
                   example: [ power, press ]
                 anonymous:
@@ -112,6 +117,12 @@ paths:
                     format: uuid
                   versionNumber:
                     type: integer
+        400:
+          description: BadReqest
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/400'
         401:
           $ref: '#/components/responses/401'
         403:
diff --git a/src/test/kotlin/integration/Article routes.kt b/src/test/kotlin/integration/Article routes.kt
index 5b12bf0..fa0cc82 100644
--- a/src/test/kotlin/integration/Article routes.kt	
+++ b/src/test/kotlin/integration/Article routes.kt	
@@ -145,8 +145,8 @@ class `Article routes` : BaseTest() {
                       "versionId": "09c418b6-63ba-448b-b38b-502b41cd500e",
                       "title": "title2",
                       "anonymous": false,
-                      "content": "content2",
-                      "description": "description2",
+                      "content": "Sed malesuada ante et sem congue, scelerisque feugiat lorem viverra.",
+                      "description": "Sed vulputate, ligula id porta posuere, sapien lorem mattis arcu, sit amet luctus erat orci sed tellus.",
                       "tags": [
                           "green"
                       ]
@@ -161,6 +161,7 @@ class `Article routes` : BaseTest() {
     }
 
     @Test
+    @Tag("Forbidden")
     fun `I cannot create an article if I'm not connected`() {
         withIntegrationApplication {
             `When I send a POST request`("/articles") {
@@ -170,8 +171,8 @@ class `Article routes` : BaseTest() {
                       "versionId": "e3c7ce42-241c-4caf-9a59-aba4e466440e",
                       "title": "title2",
                       "anonymous": false,
-                      "content": "content2",
-                      "description": "description2",
+                      "content": "Sed malesuada ante et sem congue, scelerisque feugiat lorem viverra.",
+                      "description": "Sed vulputate, ligula id porta posuere, sapien lorem mattis arcu, sit amet luctus erat orci sed tellus.",
                       "tags": [
                           "green"
                       ]
@@ -185,4 +186,35 @@ class `Article routes` : BaseTest() {
             }
         }
     }
+
+    @Test
+    @Tag("BadRequest")
+    fun `I cannot create an article with wrong request`() {
+        withIntegrationApplication {
+            `Given I have citizen`("John", "Doe")
+            `When I send a POST request`("/articles", Validate.NONE) {
+                `authenticated as`("John", "Doe")
+                `with body`(
+                    """
+                    {
+                      "versionId": "09c418b6-63ba-448b-b38b-502b41cd500e",
+                      "title": "title2",
+                      "anonymous": false,
+                      "content": "content2",
+                      "description": "description2",
+                      "tags": [
+                          "green"
+                      ]
+                    }
+                    """
+                )
+            } `Then the response should be` BadRequest and {
+                `And the response should not be null`()
+                `And the response should contain`("$.invalidParams[0].name", ".content")
+                `And the response should contain`("$.invalidParams[0].reason", "must have at least 50 characters")
+                `And the response should contain`("$.invalidParams[1].name", ".description")
+                `And the response should contain`("$.invalidParams[1].reason", "must have at least 50 characters")
+            }
+        }
+    }
 }
diff --git a/src/test/kotlin/integration/steps/when/request.kt b/src/test/kotlin/integration/steps/when/request.kt
index a64a448..ca428c8 100644
--- a/src/test/kotlin/integration/steps/when/request.kt
+++ b/src/test/kotlin/integration/steps/when/request.kt
@@ -14,6 +14,7 @@ import io.ktor.server.testing.TestApplicationRequest
 import io.ktor.server.testing.setBody
 
 enum class Validate(override val bit: Long) : BitMaskI {
+    NONE(0),
     REQUEST_BODY(1),
     REQUEST_PARAM(2),
     REQUEST_HEADER(4),