# Farcaster

Using Farcaster social graph data propagated by [Farcaster's Hubble](https://hub.docker.com/r/farcasterxyz/hubble), and replicated locally by [Farcaster's Replicator](https://hub.docker.com/r/farcasterxyz/replicator), we have launched a set of **OpenRank APIs** that can help developers building applications, clients, frames or any consumer experience to **filter out spam** and leverage **personalized ranking and recommendations.** 

**Using our APIs**, developers can leverage and customize the algorithms to power multitude of use cases, including but not limited to **identifying high quality users** vs. sybil users, **create ranking and recommendation** engine for profiles, frames and casts, generate **better feeds**, **airdrops to valuable users** and other social and on-chain experiences like [onchain feed](https://onchain.k3l.io).

Our APIs are implemented using OpenRank, an open-source and verifiable reputation computation protocol.

{% hint style="info" %}
Global ranking is updated every 2 hours \
Personalized Graph is served on-demand
{% endhint %}

{% hint style="info" %}
Try out the APIs here! — <https://graph.cast.k3l.io/docs#/>
{% endhint %}

## Examples of using our APIs:

1. To reward high quality users in the form of airdrop or power badges, you can use our Global Profile Ranking APIs along or Channel Profile Ranking APIs to make sure the reward is given to relevant and high quality users.
2. If you are building a client, you can use our Feed APIs to power a trending for you feed and use the Channel Feed APIs to develop a channel specific trending feed.
3. To build a frames specific client you can use our Top Frames API to have the users of you app only displayed relevant and high quality frames.
4. If you want to help with discovery in your client, you can use our Personalized Network APIs, (Extended network) to display relevant users as recommended profiles to your user.
5. You can filter spam in your application by using or Global Ranking APIs.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.openrank.com/integrations/farcaster.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.