Uploadcare

REST API at api.uploadcare.com. Resources: files, groups, project. GET /files/ lists uploaded files (paginated). POST /files/local/ uploads from binary data. POST /files/remote/ uploads from URL (async ingest). GET /files/{uuid}/ retrieves file metadata (size, type, CDN URL). DELETE /files/{uuid}/ removes file. Image transformations applied via URL suffixes on the CDN URL (e.g., /-/resize/400x/ or /-/format/webp/). Group API for managing sets of files as atomic units. Webhook support for upload events.

Standard HTTP status codes with JSON error bodies. 401 for invalid auth, 404 for missing file UUID, 400 for invalid request params. Remote URL upload is async — polling required via status endpoint. File transformation errors surface as 404 or 422 on the CDN URL for invalid operations. Rate limits documented per account plan. Uploadcare CDN is globally distributed; uptime SLA on paid plans. Batch delete operations are atomic — partial failures rolled back.

Uploadcare provides file upload, cloud storage, CDN delivery, and image processing in one platform. Files are uploaded once and delivered globally via CDN with on-the-fly transformations via URL parameters (resize, crop, quality, format, blur, etc.) — no preprocessing needed. For agents, key capabilities: programmatic file upload from URLs (ingest from any source without local download), file metadata management (list, delete, copy across storage), batch operations on file groups, and URL-based image transformation for serving resized/converted images to end users. Simpler pricing than Cloudinary; strong CDN/transformation primitive. Confidence is docs-derived.

Simple auth: Authorization: Uploadcare.Simple {public_key}:{secret_key} header. Public key is used for client-side widget; secret key is server-side only. REST management API requires the secret key. Signed uploads (HMAC-based) available for preventing unauthorized uploads from the widget. Project-level key management via Uploadcare dashboard. HTTPS enforced for all API and CDN delivery.

uploadcare.com/docs provides REST API reference, image/video transformation guide (all URL operations), upload flow docs (direct, from URL, multipart for large files), widget integration guide, and webhook setup. Documentation is comprehensive with examples. Getting started requires an Uploadcare account (free plan available). Active GitHub presence with official SDKs for Python, PHP, Go, Ruby, and JavaScript.