Twitter User by ID API | Profile Lookup by ID

User Info by ID resolves a numeric Twitter/X user ID into the full user object: bio, follower and following counts, verification, location, and avatar. Use it when you already hold the stable ID, since handles can change but IDs do not. It is a single $0.0008 read with bearer auth.

curl -X GET "https://example.com/user/info_by_id?user_id=745273"

{  "user": {    "id": "745273",    "username": "naval",    "name": "Naval",    "followers_count": 2100000,    "verified": true  }}

{  "error": "bad_request",  "message": "Missing or malformed parameter. Fix the request before retrying."}

{  "error": "unauthorized",  "message": "The API key is missing, malformed, or revoked. Check the Authorization header."}

{  "error": "insufficient_credits",  "message": "Your balance is exhausted. Top up your credits to continue."}

{  "error": "not_found",  "message": "The resource does not exist, for example a deleted tweet or a private account."}

{  "error": "rate_limited",  "message": "Too many requests. Back off and retry with exponential backoff."}

{  "error": "server_error",  "message": "Something failed on our side. Retry with backoff; if it persists, contact support."}

Pricing

When to use

Use it to re-resolve a profile from a stored ID, for example refreshing follower counts for accounts you track by ID.

Related endpoints

• User Info by Username: Fetch a full profile by @handle.
• User Followers: Page through the accounts that follow a user.
• User Following: Page through the accounts a user follows.

FAQ

When should I use ID instead of username?

Use the ID when you already have it. The numeric ID is permanent, while a handle can be changed by the account owner.

Where do I get a numeric user ID?

Every user object returned by the API carries its id field. Capture it once from any profile, search, or follower call.

Does it return the same fields as the username lookup?

Yes. The response is the same full user object as User Info by Username, just keyed on the numeric ID.