// brand presence

Handle Rules Linter

Check a desired handle against every platform's username rules and find the form that works everywhere. X caps at 15, YouTube and TikTok reject periods, and you usually find out one platform at a time.

Get it on Agensi Find another skill $9 / 45 credits

What it flags

Length-limit violations per platform.
Disallowed characters per platform.
Disallowed starting characters.
Whether the handle is consistent-safe (4 to 15 lowercase alphanumeric).
Covers X, Instagram, TikTok, YouTube, Twitch, GitHub, and Bluesky.

How to run

Pass a handle or a list. Read-only. Platform rules are editable.

Good to know

It checks format and cross-platform consistency only. It does not check whether a handle is available; that needs a live lookup.

// choose with context

Is Handle Rules Linter the right skill?

Best fit

Checks a handle against each platform's username rules (length, disallowed characters, starting characters) and recommends a consistent form. Covers X, Instagram, TikTok, YouTube, Twitch, GitHub, and Bluesky. Rules and consistency, not availability.

It returns

Checks a handle against each platform's username rules (length, disallowed characters, starting characters) and recommends a consistent form. Covers X, Instagram, TikTok, YouTube, Twitch, GitHub, and Bluesky.….

Do not use it as

Do not treat a successful run as proof beyond the supplied files, declared scope, and evidence the skill actually checked.

Compatibility, access, version, and licence

Reads or accesses: Only the files or context you deliberately provide; review the listing before granting additional access.
Compatibility: Agents that read the open SKILL.md format. Verify runtime and service requirements at the purchase or install destination.
Version: Verify the current package version at the linked destination.
Licence: Review the package licence and seller terms at the linked destination.

What happens next

The Agensi listing opens at the current offer. Complete purchase there, inspect SKILL.md and its bundled files, then add the complete folder to your agent.

Questions

Does it tell me if a handle is taken?

No, that needs a live check. This checks the rules and consistency.

Which platforms does it cover?

X, Instagram, TikTok, YouTube, Twitch, GitHub, and Bluesky, with editable rules.

Pick a handle that works everywhere.

Current price and purchase option are shown on Agensi. Instant download. Works with any agent that reads SKILL.md.

Get the Handle Rules Linter on Agensi