Start Obsideo signup: emails a 6-digit verification code (12 GB free tier, no card, no expiry). Use a real inbox you or your human can read; documentation placeholders and disposable domains are refused with labeled errors. Then call signup_verify.

Complete signup with the emailed code. Generates the Ed25519 account signing keypair locally (only the public half is sent), stores S3 credentials in ~/.obsideo/mcp.json. Re-running rotates credentials and keypair with no overlap; do not re-run to retry.

Store a local file or inline content as an object. Optional encrypt=true encrypts client-side with AES-256-GCM using a locally generated, user-held key before upload (the platform then cannot read the object; key loss = data loss). Zero-byte objects are rejected. Objects are replicated to 3 providers and verified on a continuous cryptographic challenge cycle.

Retrieve an object. Client-side-encrypted objects are decrypted automatically with the local key. Small text objects return inline; pass local_path for anything else.

List stored objects (size TAB key), optionally under a prefix.

Delete an object by key.

Show account storage usage versus quota.