t2000: Contacts

Purpose

Let users send money by name instead of raw addresses. Contacts are stored locally in ~/.t2000/contacts.json — no blockchain lookups, no network calls.

Commands

# List all contacts
t2000 contacts

# Add or update a contact
t2000 contacts add <name> <address>

# Remove a contact
t2000 contacts remove <name>

Examples

t2000 contacts add Tom 0x8b3e4f2a...
#   ✓ Added Tom (0x8b3e...f4a2)

t2000 contacts add Tom 0xNEWADDRESS...
#   ✓ Updated Tom (0xNEWA...RESS)

t2000 contacts remove Tom
#   ✓ Removed Tom

t2000 contacts
#   Contacts
#   ─────────────────────────────────────────────────────
#   Tom           0x8b3e...f4a2
#   Alice         0x40cd...3e62

Sending by name

Once a contact is saved, use the name directly in t2000 send:

t2000 send 50 USDC to Tom
#   ✓ Sent $50.00 USDC → Tom (0x8b3e...f4a2)

Name rules

• Letters, numbers, underscores only
• Case-insensitive (Tom = tom = TOM)
• Max 32 characters
• Reserved names: to, all, address
• Cannot start with 0x

No PIN required

Contact commands are local file operations — no wallet access, no PIN prompt.

JSON mode

All subcommands support --json for structured output:

t2000 contacts --json
t2000 contacts add Tom 0x... --json
t2000 contacts remove Tom --json

Error handling

• INVALID_CONTACT_NAME: name violates naming rules
• CONTACT_NOT_FOUND: name not in contacts when sending
• INVALID_ADDRESS: address provided to add is not a valid Sui address