Line API

Social / OAuth Advanced HTTPS

68 C

Metadata Score Metadata estimate · not endpoint-tested

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Overview

The LINE API lets you integrate LINE Login, messaging, and social sharing into your apps and websites for users in Japan, Thailand, Taiwan, and other markets where LINE is the dominant messaging platform. It uses OAuth 2.0 for authentication and supports both web login and in-app messaging via the Messaging API. Register your app at developers.line.biz to get your channel credentials.

Beginner Tip

LINE has two separate products: LINE Login for authenticating users and the Messaging API for chatbots. Start with LINE Login if you want social sign-in; use the Messaging API if you want to send messages to users via a LINE Official Account.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

stock price and symbol

open/close/high/low values

trading volume

market cap

historical price data

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative

{
  "status": "success",
  "data": {
    "result": "Data from Line",
    "description": "Line Login, Share on Line, Social Plugins and more",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

userId The unique LINE user ID for the authenticated user

displayName The LINE display name of the user

pictureUrl URL of the user LINE profile picture

statusMessage The custom status message set by the user on LINE

language The LINE app language setting of the user such as ja, th, or en

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request

const url = "https://api.line.me/v2/profile";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

401: The access token expired LINE access tokens have a 30-day expiry

✓ Use the refresh token to get a new access token via POST to https://api.line.me/oauth2/v2.1/token with grant_type=refresh_token

403: Insufficient permission The OAuth scope granted does not include the requested resource

✓ Check that you requested the needed scopes such as profile and openid in your LINE Login configuration at developers.line.biz

Channel access token vs user access token confusion Using a channel access token where a user token is required or vice versa

✓ Channel access tokens are for Messaging API bot operations; user access tokens from LINE Login are for accessing user profile data

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

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