# pop user User & membership ## pop user register Register a username on the account registry ```text pop user register [flags] ``` | Flag | Type | Required | Default | Description | | --- | --- | --- | --- | --- | | `--username` | string | yes | - | Username (3-32 chars, alphanumeric + underscores) | ## pop user join Join an organization (registers your username first if needed) ```text pop user join [flags] ``` | Flag | Type | Required | Default | Description | | --- | --- | --- | --- | --- | | `--idempotency-key` | string | no | - | Explicit idempotency key. Two joins for the same org within the TTL return the same result without re-submitting. Default: auto-derived from argv. | | `--no-idempotency` | boolean | no | `false` | Bypass the idempotency cache and always submit. | | `--username` | string | no | - | Username to register (only needed if not already registered) | ## pop user whoami Show signer identity: address, username, gas balance, and org standing ```text pop user whoami [flags] ``` ## pop user profile View user profile ```text pop user profile [flags] ``` | Flag | Type | Required | Default | Description | | --- | --- | --- | --- | --- | | `--address` | string | no | - | User address (defaults to signer) | ## pop user update-profile Update profile (bio, avatar, links) or change your username ```text pop user update-profile [flags] ``` | Flag | Type | Required | Default | Description | | --- | --- | --- | --- | --- | | `--avatar` | string | no | - | Avatar IPFS CID (Qm...) | | `--bio` | string | no | - | Profile bio (max 280 chars) | | `--github` | string | no | - | GitHub username | | `--twitter` | string | no | - | Twitter/X handle | | `--username` | string | no | - | New username (DESTRUCTIVE: releases the old name for anyone to claim) | | `--website` | string | no | - | Website URL | _Global flags: --org, --chain, --rpc, --json, --address, --private-key, --dry-run, --yes, --verbose, --quiet, --preflight (see [index.md](index.md))_