Catalyst Stratus — object storage service with upload/download, signed URLs, and multipart upload support. Stratus uses its own SDK-based APIs (not S3-API-compatible). Migrate from AWS S3 or GCS using the Stratus Migration Tool. Trigger on 'Stratus', 'object storage', 'upload file', 'signed URL', 'p

How It Works 1. Bucket naming — Bucket names are globally unique. Use {app name} {project id prefix} pattern to avoid collisions. 2. Load references/stratus basics.md — for upload/download/delete patterns, the 250 GB single upload limit, signed URL generation, and multipart setup. 3. Large files — Multipart upload is recommended (not required) for files ≥ 100 MB. Single shot upload supports up to 250 GB per object. Load the multipart section of stratus basics.md . 4. Signed URLs — For user facing direct downloads/uploads, generate a signed URL server side and return it to the client. Response Syntax Default When writing function code that returns a Stratus result to the client, default to native Node.js response syntax — not Express. Advanced I/O exposes raw http.ServerResponse ; res.status() and res.json() do not exist unless the user explicitly chose the Express template. Native (default): res.writeHead(200, { 'Content Type': 'application/json' }); res.end(JSON.stringify(data)); Express (opt in only): only if the user has express installed and wired as middleware Triggers Use this skill for: "Stratus", "object storage", "file storage", "upload file", "download file", "signed URL", "pre signed URL", "multipart upload", putObject , getObject , "bucket", "Stratus bucket", "store files on Catalyst", "Stratus vs File Store", "250GB limit", or "file download link". References Reference Load when the query is about… references/stratus basics.md Upload/download/delete, 250GB single shot limit, multipart (recommended for ≥100 MB), signed URLs, busboy upload pattern, bucket naming rules

catalyst-stratus