{"service":"PDF Signing API","version":"1.0.0","storage_type":"local","endpoints":[{"method":"POST","path":"/api/documents/upload","description":"Upload document with metadata"},{"method":"POST","path":"/api/documents/upload-from-s3","description":"Upload document from S3 URL"},{"method":"POST","path":"/api/documents/{doc_id}/positions","description":"Save signature positions"},{"method":"POST","path":"/api/documents/{doc_id}/generate-link","description":"Generate signing link"},{"method":"POST","path":"/api/sign","description":"Apply signature"},{"method":"GET","path":"/api/documents/{doc_id}/download","description":"Download signed document"},{"method":"GET","path":"/api/documents/{doc_id}/verify","description":"Verify document integrity"},{"method":"GET","path":"/api/documents/{doc_id}/audit","description":"Get audit trail"},{"method":"GET","path":"/api/documents","description":"List all documents"}]}