> For the complete documentation index, see [llms.txt](https://developer.jylo.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.jylo.ai/api-reference/projects/metadata.md).

# Metadata

## Assign a metadata category option.

> Assigns a predefined category option to a metadata entry on the project so it can be tagged and filtered. Requires project read-write access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Jylo.Toolkit.API.Models.Container.ContainerMetadata.AddContainerMetadataCategoryModel":{"required":["optionIdentifier"],"type":"object","properties":{"optionIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata/{objectIdentifier}/categories":{"post":{"tags":["Metadata"],"summary":"Assign a metadata category option.","description":"Assigns a predefined category option to a metadata entry on the project so it can be tagged and filtered. Requires project read-write access.","parameters":[{"name":"objectIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.AddContainerMetadataCategoryModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.AddContainerMetadataCategoryModel"}},"application/*+json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.AddContainerMetadataCategoryModel"}}}},"responses":{"200":{"description":"OK"},"400":{"description":"Bad Request","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"404":{"description":"Not Found","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## List project metadata entries.

> Returns a paginated, optionally searched and sorted list of metadata entries on the project. Requires project read access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Jylo.Toolkit.Sorting.ItemSorting":{"enum":["dateAdded","name","description","isDirectory","playbookName","projectName","extension","size","pageCount","isAdminACL","documentsCount","totalFileSizeBytes","promptCount","estimatedTokenCount","latestMessageDate","flowsCount","orgWide","flowCredits","assistantsCount","assistantCredits","pages","fileCreditsCost","ocrCreditsCost","layoutCreditsCost","totalCredits","loginsCount","lastLoginDate","playbookDescription","ocrPageCount","layoutPageCount","userMessageCount","assistantMessageCount","totalMessageCount","resourceOwner","status","downloadType","dateCompleted"],"type":"string"},"Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel":{"required":["metadata","objectIdentifier"],"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"text":{"type":"string","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"categories":{"type":"array","items":{"type":"string","format":"uuid"},"nullable":true},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"},"metadata":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel":{"required":["dataType","description","isRequired","name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"description":{"type":"string","nullable":true},"dataType":{"type":"string","nullable":true},"isRequired":{"type":"boolean"},"options":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel"},"nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel":{"required":["name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata":{"get":{"tags":["Metadata"],"summary":"List project metadata entries.","description":"Returns a paginated, optionally searched and sorted list of metadata entries on the project. Requires project read access.","parameters":[{"name":"pageNumber","in":"query","schema":{"type":"integer","format":"int32"}},{"name":"pageSize","in":"query","schema":{"type":"integer","format":"int32"}},{"name":"searchText","in":"query","schema":{"type":"string"}},{"name":"sorting","in":"query","schema":{"$ref":"#/components/schemas/Jylo.Toolkit.Sorting.ItemSorting"}},{"name":"desc","in":"query","schema":{"type":"boolean","default":true}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"responses":{"200":{"description":"OK","content":{"text/plain":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}},"application/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}},"text/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## Create a project metadata entry.

> Creates a new typed metadata entry on the project and returns the created entry. Requires project read-write access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Jylo.Toolkit.API.Models.MultiTypeInputWriteModel":{"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"text":{"type":"string","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true},"categories":{"type":"array","items":{"type":"string","format":"uuid"},"nullable":true},"organizationMetadataIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel":{"required":["metadata","objectIdentifier"],"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"text":{"type":"string","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"categories":{"type":"array","items":{"type":"string","format":"uuid"},"nullable":true},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"},"metadata":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel":{"required":["dataType","description","isRequired","name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"description":{"type":"string","nullable":true},"dataType":{"type":"string","nullable":true},"isRequired":{"type":"boolean"},"options":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel"},"nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel":{"required":["name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata":{"post":{"tags":["Metadata"],"summary":"Create a project metadata entry.","description":"Creates a new typed metadata entry on the project and returns the created entry. Requires project read-write access.","parameters":[{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputWriteModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputWriteModel"}},"application/*+json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputWriteModel"}}}},"responses":{"200":{"description":"OK","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}}},"400":{"description":"Bad Request","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## Get a project metadata entry.

> Returns a single project metadata entry identified by its GUID. Requires project read access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel":{"required":["metadata","objectIdentifier"],"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"text":{"type":"string","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"categories":{"type":"array","items":{"type":"string","format":"uuid"},"nullable":true},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"},"metadata":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel":{"required":["dataType","description","isRequired","name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"description":{"type":"string","nullable":true},"dataType":{"type":"string","nullable":true},"isRequired":{"type":"boolean"},"options":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel"},"nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel":{"required":["name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata/{objectIdentifier}":{"get":{"tags":["Metadata"],"summary":"Get a project metadata entry.","description":"Returns a single project metadata entry identified by its GUID. Requires project read access.","parameters":[{"name":"objectIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"responses":{"200":{"description":"OK","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"404":{"description":"Not Found","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## Update a project metadata entry.

> Updates an existing project metadata entry and returns the updated entry. Requires project read-write access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Jylo.Toolkit.API.Models.MultiTypeInputUpdateModel":{"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"text":{"type":"string","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"organizationMetadataIdentifier":{"type":"string","format":"uuid"},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true}},"additionalProperties":false},"Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel":{"required":["metadata","objectIdentifier"],"type":"object","properties":{"isYes":{"type":"boolean","nullable":true},"text":{"type":"string","nullable":true},"decimalValue":{"type":"number","format":"double","nullable":true},"date":{"type":"string","format":"date-time","nullable":true},"categories":{"type":"array","items":{"type":"string","format":"uuid"},"nullable":true},"singleCategoryIdentifier":{"type":"string","format":"uuid","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"},"metadata":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataReadModel":{"required":["dataType","description","isRequired","name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"description":{"type":"string","nullable":true},"dataType":{"type":"string","nullable":true},"isRequired":{"type":"boolean"},"options":{"type":"array","items":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel"},"nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Jylo.Toolkit.API.Models.OrganizationMetadata.OrganizationMetadataOptionReadModel":{"required":["name","objectIdentifier"],"type":"object","properties":{"name":{"type":"string","nullable":true},"objectIdentifier":{"type":"string","format":"uuid"}},"additionalProperties":false},"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata/{objectIdentifier}":{"put":{"tags":["Metadata"],"summary":"Update a project metadata entry.","description":"Updates an existing project metadata entry and returns the updated entry. Requires project read-write access.","parameters":[{"name":"objectIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputUpdateModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputUpdateModel"}},"application/*+json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.MultiTypeInputUpdateModel"}}}},"responses":{"200":{"description":"OK","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"application/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}},"text/json":{"schema":{"$ref":"#/components/schemas/Jylo.Toolkit.API.Models.Container.ContainerMetadata.ContainerMetadataReadModel"}}}},"400":{"description":"Bad Request","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"404":{"description":"Not Found","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## Delete a project metadata entry.

> Permanently deletes a project metadata entry by its GUID. Requires project read-write access and container administrator rights.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata/{objectIdentifier}":{"delete":{"tags":["Metadata"],"summary":"Delete a project metadata entry.","description":"Permanently deletes a project metadata entry by its GUID. Requires project read-write access and container administrator rights.","parameters":[{"name":"objectIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"responses":{"204":{"description":"No Content"},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"404":{"description":"Not Found","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```

## Remove a metadata category option.

> Unassigns a category option from a project metadata entry, leaving the entry in place. Requires project read-write access.

```json
{"openapi":"3.0.4","info":{"title":"Project API","version":"v1"},"servers":[{"url":"https://api.{tenant}.{region}.jylo.ai","variables":{"tenant":{"default":"example","description":"Tenant name"},"region":{"default":"uk","description":"Region","enum":["uk","us","eu","au","jp"]}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"Bearer authentication with JWT","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"Microsoft.AspNetCore.Mvc.ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}},"paths":{"/projects/{projectIdentifier}/metadata/{objectIdentifier}/categories/{optionIdentifier}":{"delete":{"tags":["Metadata"],"summary":"Remove a metadata category option.","description":"Unassigns a category option from a project metadata entry, leaving the entry in place. Requires project read-write access.","parameters":[{"name":"objectIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"optionIdentifier","in":"path","required":true,"schema":{"type":"string","format":"uuid"}},{"name":"projectIdentifier","in":"path","required":true,"schema":{"type":"string"}}],"responses":{"200":{"description":"OK"},"400":{"description":"Bad Request","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"403":{"description":"Forbidden","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}},"404":{"description":"Not Found","content":{"text/plain":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"application/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}},"text/json":{"schema":{"$ref":"#/components/schemas/Microsoft.AspNetCore.Mvc.ProblemDetails"}}}}}}}}}
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://developer.jylo.ai/api-reference/projects/metadata.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.