Omniseal

Omniseal by PureCipher conceals a secret file inside a supported cover file, retrieves the hidden file with the matching private seed, checks seal integrity, and creates a clean cover with the hidden payload removed. Each operation preserves the original files.

Provide an authorized, fetchable HTTPS file URL or exact base64 bytes. Files uploaded to a Claude conversation are not automatically accessible to this connector. Selected file contents and the operation seed are processed by PureCipher’s hosted Omniseal service. No PureCipher account or API key is required.

Inputs are limited to 6 MB per file and 10 MB combined for sealing. Claude responses are limited to 140,000 serialized characters, typically restricting generated files to about 100 KB. Results are binary MCP resources; the connector does not provide hosted output download links. Larger outputs return a clear size error.

Omniseal is not a password-recovery service or general-purpose encryption tool. Use an Omniseal private seed, never an account password or API credential.