{"uid":"cap_uOLr0zXEwWmj0dD5aLCqE","slug":"agentmail-attachment-id-ba1c5507","name":"AgentMail Get Attachment","description":"Get Attachment","url":"https://mpp.api.agentmail.to/v0/inboxes/:inbox_id/threads/:thread_id/attachments/:attachment_id?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["inbox_id","thread_id","attachment_id"],"properties":{"inbox_id":{"type":"string","title":"InboxId","description":"The ID of the inbox."},"thread_id":{"type":"string","title":"ThreadId","description":"ID of thread."},"attachment_id":{"type":"string","title":"AttachmentId","description":"ID of attachment."}}},"responseSchema":{"type":"object","title":"AttachmentResponse","required":["attachment_id","size","download_url","expires_at"],"properties":{"size":{"type":"integer","title":"AttachmentSize","description":"Size of attachment in bytes."},"filename":{"type":"string","title":"AttachmentFilename","description":"Filename of attachment."},"content_id":{"type":"string","title":"AttachmentContentId","description":"Content ID of attachment."},"expires_at":{"type":"string","format":"date-time","description":"Time at which the download URL expires."},"content_type":{"type":"string","title":"AttachmentContentType","description":"Content type of attachment."},"download_url":{"type":"string","description":"URL to download the attachment."},"attachment_id":{"type":"string","title":"AttachmentId","description":"ID of attachment."},"content_disposition":{"enum":["inline","attachment"],"type":"string","title":"AttachmentContentDisposition","description":"Content disposition of attachment."}}},"example":null,"exampleRequest":null,"tags":["email","inboxes","domains","drafts","threads","webhooks","messaging","ai","social"],"displayCostAmount":"0","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"unprobed","priceSource":"unknown","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"free","summary":"Free","primary":null,"accepted":[]},"paymentMethods":[],"brandName":"AgentMail","brandSlug":"agentmail","brandBaseUrl":"https://agentmail.to","brandDocsUrl":"https://docs.agentmail.to","whatItDoes":"Retrieves metadata and a temporary download URL for a specific email attachment within a thread in an AgentMail inbox.","exampleAgentPrompt":"Can you fetch the attachment with ID 'att_abc123' from thread 'thr_xyz789' in my AgentMail inbox 'inbox_def456' so I can see the filename, file type, and get a link to download it?","exampleUseCases":null,"resultDescription":"Returns an object containing the attachment ID, filename, MIME content type, size in bytes, a temporary download URL, its expiration timestamp, content disposition (inline or attachment), and optional content ID for inline references.","failureModes":["404 Not Found if inbox_id, thread_id, or attachment_id does not exist","401 Unauthorized if Authorization Bearer token is missing or invalid","410 Gone if the download_url has already expired","403 Forbidden if the caller does not have access to the specified inbox","400 Bad Request if required path parameters are malformed or missing"],"whenToPreferThis":"Use this endpoint when an AI agent needs to access or process a specific file attachment from an email thread in an AgentMail-managed inbox — particularly when you already know the attachment_id and need either metadata (filename, size, type) or a download URL to retrieve the file content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-09T18:34:11.542Z","isFirstParty":false,"canonicalSlug":"agentmail-attachment-id-ba1c5507"}