listIssueAttachments reads integration-style external resources; it does not return files embedded in Markdown.
automations/list-linear-attachments.automation.ts
issueId accepts a UUID or identifier. Common page fields are limit (1–50, default 50), after, and includeArchived; optional account defaults to the project binding.
Returns { attachments: LinearAttachment[]; pageInfo: LinearPageInfo }. Each attachment includes unique URL, title/subtitle, source metadata, grouping flag, creator, issue reference, and dates.