Confirm which npm user the current registry token authenticates as with npm whoami
domain: registry.npmjs.org · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Ensure a valid auth token is configured for the registry in ~/.npmrc (e.g. //registry.npmjs.org/:_authToken=<token>), normally set by npm login or npm token create
Run npm whoami — with token-based auth it calls the /-/whoami registry endpoint using the token and prints the associated username to stdout
For registries using Basic Auth, npm whoami prints the username portion of the auth string instead of calling /-/whoami
Target a specific registry with: npm whoami --registry=https://registry.example.com
Use in CI as a cheap auth sanity check before npm publish / npm ci (it fails fast when the token is missing, expired, or revoked)
Known gotchas
npm whoami is unaware of workspaces — run it from a directory whose .npmrc/registry config applies, or pass --registry explicitly
Without a valid token it errors (e.g. ENEEDAUTH or 401) instead of printing a user, so non-zero exit reliably indicates broken auth
Workspaces: because it is unaware of workspaces, npm prints the current user regardless of which workspace directory you run it from
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