> For the complete documentation index, see [llms.txt](https://docs.usepylon.com/pylon-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.usepylon.com/pylon-docs/developer/api/api-reference/attachments.md). # Attachments ## Create an attachment > Uploads a file as an attachment. The returned URL can be used when creating issues or messages. Files up to 100 MB (104,857,600 bytes) are supported. Larger files may be rejected and should be shared using an externally hosted link. This applies to direct uploads and files fetched through file\_url. Downstream delivery channels may impose smaller limits.\ > \ > \*\*Rate limit:\*\* 30 requests per minute ```json {"openapi":"3.0.3","info":{"title":"Pylon API.","version":"1.0.0"},"servers":[{"description":"US region","url":"https://api.usepylon.com"},{"description":"EU region","url":"https://api.eu.usepylon.com"}],"security":[{"bearerAuth":[]}],"components":{"securitySchemes":{"bearerAuth":{"description":"Authorization: Bearer ","scheme":"bearer","type":"http"}},"responses":{"CreateAttachmentResponse":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreateAttachmentResponseBody"}}},"description":""},"BadRequestApiResponse":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorApiResponseBody"}}},"description":"The request was invalid or could not be completed."},"ForbiddenApiResponse":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorApiResponseBody"}}},"description":"The authenticated caller or organization is not allowed to access this endpoint or operation."},"PayloadTooLargeApiResponse":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorApiResponseBody"}}},"description":"The uploaded file is too large."},"InternalServerErrorApiResponse":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorApiResponseBody"}}},"description":"An unexpected internal error occurred."}},"schemas":{"CreateAttachmentResponseBody":{"properties":{"data":{"$ref":"#/components/schemas/Attachment"},"request_id":{"description":"The request ID for tracking.","type":"string"}},"type":"object"},"Attachment":{"properties":{"description":{"description":"The description of the attachment.","type":"string"},"id":{"description":"The ID of the attachment.","type":"string"},"name":{"description":"The name of the attachment.","type":"string"},"url":{"description":"The URL of the attachment.","type":"string"}},"type":"object"},"ErrorApiResponseBody":{"properties":{"code":{"description":"A stable machine-readable identifier for this failure, safe to branch on\ninstead of the message text. Omitted when the failure has no assigned code.","enum":["recipients_suppressed","email_bounced","internal_issue_reply_not_allowed","duplicate_object","invalid_authorization_header","invalid_api_token","invalid_oauth_token","wrong_region_token","organization_deactivated","organization_suspended","permission_denied","oauth_not_permitted","rate_limited","not_found","method_not_allowed","payload_too_large","invalid_request_body","internal_error","invalid_webhook_credentials","organization_inactive"],"type":"string"},"errors":{"description":"The list of errors.","items":{"type":"string"},"type":"array"},"exists_id":{"description":"The ID of the object that already exists if this is a duplicate object error.","type":"string"},"request_id":{"description":"The request ID for tracking.","type":"string"}},"type":"object"}}},"paths":{"/attachments":{"post":{"description":"Uploads a file as an attachment. The returned URL can be used when creating issues or messages. Files up to 100 MB (104,857,600 bytes) are supported. Larger files may be rejected and should be shared using an externally hosted link. This applies to direct uploads and files fetched through file_url. Downstream delivery channels may impose smaller limits.\n\n**Rate limit:** 30 requests per minute","operationId":"CreateAttachment","requestBody":{"content":{"multipart/form-data":{"schema":{"properties":{"description":{"description":"The description of the file.","type":"string"},"file":{"description":"The file to upload. Files up to 100 MB (104,857,600 bytes) are supported. Larger files may be rejected and should be shared using an externally hosted link.","format":"binary","type":"string"},"file_url":{"description":"The URL to fetch the file from, if the file is not provided. Fetched files up to 100 MB (104,857,600 bytes) are supported. Larger files may be rejected and should be shared using an externally hosted link.","type":"string"}},"type":"object"}}}},"responses":{"200":{"$ref":"#/components/responses/CreateAttachmentResponse"},"400":{"$ref":"#/components/responses/BadRequestApiResponse"},"403":{"$ref":"#/components/responses/ForbiddenApiResponse"},"413":{"$ref":"#/components/responses/PayloadTooLargeApiResponse"},"500":{"$ref":"#/components/responses/InternalServerErrorApiResponse"}},"summary":"Create an attachment","tags":["attachments"]}}}} ``` --- # 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://docs.usepylon.com/pylon-docs/developer/api/api-reference/attachments.md?ask=&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.