> ## Documentation Index > Fetch the complete documentation index at: https://docs.coingecko.com/llms.txt > Use this file to discover all available pages before exploring further. # cg.coin.info.updated ### `cg.coin.info.updated` This event is triggered whenever there is an update to the core information of a coin. ### Potential Use Cases Instantly update your platform's UI when a token undergoes a rebrand, changes its ticker symbol, is assigned a new `category`, or updates its official logo (`image` updates). Automatically detect when an existing project deploys on a new blockchain, or when a token migrates to a new smart contract address (`platforms` additions/removals). Act immediately when CoinGecko adds critical alerts to a coin, such as a warning about a malicious activity or contract address migration notice (`public_notices`). Build automated bots that notify your community, the moment a project updates its whitepaper, GitHub repository, or official social media links. ### References based on CoinGecko coin page Untitled Presentation ## Data References The webhook will only listen for and dispatch payloads for changes in the following data fields: | Data Field | Description & Output Field Example | | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `id` | API ID of a coin. e.g.
The API ID serves as the primary unique identifier. It is typically immutable, except when an update is required to resolve unforeseen errors.
You can also retrieve the full coin id list via this [/coins/list endpoint](https://docs.coingecko.com/reference/coins-list-new) or visit respective coin page on [CoinGecko.com](http://CoinGecko.com) | | `symbol` | Ticker symbol of a coin. e.g. | | `name` | Name of a coin. e.g. | | `web_slug` | URL Slug of a coin on [CoinGecko.com](http://CoinGecko.com). e.g.
`web_slug` can be different from `coin_id`, use `web_slug` when you want to obtain the URL of a coin page on [CoinGecko.com](http://CoinGecko.com). | | `platforms.{asset_platform_id}` | Token contract address of a coin. e.g.
You can get the full list of asset platforms id via [this endpoint](https://docs.coingecko.com/reference/asset-platforms-list).
In edge cases involving changes to the `asset_platform_id` itself
(e.g., migrating from xdai to ethereum), the system will send two changes:
  1. `removal` of the old key
  2. `addition` of the new key
| | `categories` | Categories of a coin, e.g. | | `public_notices` | Public notices of a coin, including: security breach information and contract migration announcements. e.g. | | `additional_notices` | Additional notices of a coin: can mint new tokens, has unverified contract
| | `links.{site}` | Official websites and social media sites of a coin. e.g. Note: for updates related to the 4 links below, only '`update`' event will be triggered and the payload will contain an array of multiple links. If a link is being *removed*, it will return *empty* value: | | `image` | Image file name of a coin. e.g.
Instead of tracking the `image.thumb` URL in the payload,
the webhook returns the `image_file_name` (e.g., `uniswap-logo.png`). | ## Payload Each webhook payload contains a specific event ID, timestamp, and a `data` object detailing the exact fields that changed. ### Payload Structure * `event_type`: `cg.coin.info.updated` * `data`: * `id`: CoinGecko coin ID (e.g., `bitcoin`) * `symbol`: Coin symbol (e.g., `btc`) * `name`: Coin name (e.g., `Bitcoin`) * `changes`: An array of objects detailing the modifications. A single payload can contain one or multiple field changes. * `field`: The specific field that was altered. * `change_type`: Represents the action (`addition`, `update`, or `removal`). * `new_value`: The updated value (returns `null` if `change_type` is `removal`). * `old_value`: The previous value (returns `null` if `change_type` is `addition`). ### Payload Example ```json theme={null} { "event_type": "cg.coin.info.updated", "data": { "id": "bitcoin", "symbol": "btc", "name": "Bitcoin", "changes": [ { "field": "categories", "change_type": "addition", "old_value": null, "new_value": "Store of Value" }, { "field": "links.facebook_username", "change_type": "update", "old_value": "bitcoins", "new_value": "bitcoin" }, { "field": "platforms.ethereum", "change_type": "removal", "old_value": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984", "new_value": null } ] } } ```