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Username guide

Instagram username checkers on GitHub: what to review

A repository can show how a checker is built, but its README is an author’s description, not proof that the current code works or that Instagram will accept a name. Review a specific revision before installing anything.

What a repository can and cannot promise

UserScan describes a Python checker for several sites, including Instagram. Its README lists an MIT license. As observed on 30 October 2026, its latest default-branch commit was 7edc62686581 dated 29 March 2025; the repository API showed no open issues at that time. These are repository observations, not a security review or evidence of current accuracy.

findmyname describes a collection of checkers. Its latest default-branch commit observed at the same time was 036859909ff5, dated 14 May 2025; GitHub’s repository API did not identify a license and showed no open issues. A missing detected license is not permission to reuse the code. Issue counts and activity change, and an empty issue list does not establish maintenance quality.

Review permissions, dependencies, and licensing

  1. Read the README and the actual license at the revision you intend to use. Verify whether the license permits your intended use and whether dependencies have separate terms.
  2. Inspect installation scripts, dependencies, network destinations, and requested credentials before running code. Do not paste an Instagram password or session cookie into an unfamiliar script.
  3. Check recent commits and open and closed issues for failures relevant to your environment. Pin a reviewed revision instead of assuming the latest branch is unchanged.
  4. Review platform and provider terms for your use. A public repository or an unofficial endpoint does not itself establish platform authorization.

Inspect how errors become results

Follow the code from response to output. A login page, missing page, network error, 429, or timeout needs its own uncertain or failure state; none alone confirms a username can be registered. Review whether the code records observation time and distinguishes a found profile from registration acceptance. A README example is not an independent production test.

Choose a maintained tool or a hosted service

Self-hosting gives you code to inspect and maintain, along with responsibility for dependencies, changes, and applicable usage rules. A hosted service shifts some operation to its provider, but still requires you to evaluate its contract, cost, data handling, and uncertain results. Compare the API options and cost questions, or use the site’s checker for an individual shortlist.