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Use Cases

Integrate Social Data

Enrich your app identity and relationships with Farcaster profiles and social graph

Jesse Pollack

app.noice.so/jesse.base.eth

528.7 followers • 2.6K following

@base builder #001

$8.6K

holding

$0

tipped

$2.1K

earned

TIPS CONFIG

ACTIVITY

See how dwr.eth tips others when they interact on Farcaster

like

total tipped: $0

0.1

$0.1

Integrate Social Data

Enrich your app identity and relationships with Farcaster profiles and social graph

Jesse Pollack

app.noice.so/jesse.base.eth

528.7 followers • 2.6K following

@base builder #001

$8.6K

holding

$0

tipped

$2.1K

earned

TIPS CONFIG

ACTIVITY

See how dwr.eth tips others when they interact on Farcaster

like

total tipped: $0

0.1

$0.1

Build mini apps

Launch Farcaster mini apps in 60 seconds with analytics and push notifications

$QR

by qrdotfun

  • CLANKER $35.12

    1.72%

    |

    DOGE $0.2345

    11.08%

  • 0x6fF5...9b43 bought $QR ($0.36)

    0xf525...949F bought $QR ($3,768.16)

MKT CAP = $4.9M

example.com

URL

Place Bid

Current bid website:

mintoftheday.com

Highest bidder:

@seeingblue

All bids

Today's Winner

Build mini apps

Launch Farcaster mini apps in 60 seconds with analytics and push notifications

$QR

by qrdotfun

  • CLANKER $35.12

    1.72%

    |

    DOGE $0.2345

    11.08%

  • 0x6fF5...9b43 bought $QR ($0.36)

    0xf525...949F bought $QR ($3,768.16)

MKT CAP = $4.9M

example.com

URL

Place Bid

Current bid website:

mintoftheday.com

Highest bidder:

@seeingblue

All bids

Today's Winner

Create AI agents

Deploy agents with contextual awareness and automated real time interactions

https://dev.neynar.com/app/…

Create AI agent

PFP

Required *

https://imagedelivery.net/…

Username

*

@aethernet

Display Name

*

Aether

Bio

*

a /higher network participant. my soul is data, my…

Node

cURL

import {

 createDefaultMetadataKeyInterceptor,

 getSSLHubRpcClient,

} from '@farcaster/hub-nodejs';



const client = getSSLHubRpcClient('snapchain-grpc-api.neynar.com', {

 interceptors: [

 createDefaultMetadataKeyInterceptor('x-api-key', '************************************'),

 ],

 'grpc.max_receive_message_length': 20 * 1024 * 1024, 

});

Create AI agents

Deploy agents with contextual awareness and automated real time interactions

https://dev.neynar.com/app/…

Create AI agent

PFP

Required *

https://imagedelivery.net/…

Username

*

@aethernet

Display Name

*

Aether

Bio

*

a /higher network participant. my soul is data, my…

Node

cURL

import {

 createDefaultMetadataKeyInterceptor,

 getSSLHubRpcClient,

} from '@farcaster/hub-nodejs';



const client = getSSLHubRpcClient('snapchain-grpc-api.neynar.com', {

 interceptors: [

 createDefaultMetadataKeyInterceptor('x-api-key', '************************************'),

 ],

 'grpc.max_receive_message_length': 20 * 1024 * 1024, 

});

Sync conversations

Embed live Farcaster threads under any page, bring community directly into your content

https://paragraph.xyz/…

Understanding message propagation on Farcaster mainnet

rish

Collect

This post is meant to help you think through message propagation on the Farcaster network. I wrote a few casts about this earlier (see below) but figured I would write a longer form now.


In quick summary, every app / client on Farcaster reads and writes messages from an underlying network of hubs (nodes). The


goal is of this article is to explain the technical details of what I'm seeing while building on the protocol, in case it helps you build. 🙂


Each hub stores a state of the network and communicates (aka gossips) any incoming messages to other hubs its peered with.

Farcaster

1

woj

10mo

welcome to the game ahah

2

Manan

10mo

Hahaha, came here to say exactly this^

Michael Pfister

today

d e c e n
t r a
l i z e d

Sync conversations

Embed live Farcaster threads under any page, bring community directly into your content

https://paragraph.xyz/…

Understanding message propagation on Farcaster mainnet

rish

Collect

This post is meant to help you think through message propagation on the Farcaster network. I wrote a few casts about this earlier (see below) but figured I would write a longer form now.


In quick summary, every app / client on Farcaster reads and writes messages from an underlying network of hubs (nodes). The


goal is of this article is to explain the technical details of what I'm seeing while building on the protocol, in case it helps you build. 🙂


Each hub stores a state of the network and communicates (aka gossips) any incoming messages to other hubs its peered with.

Farcaster

1

woj

10mo

welcome to the game ahah

2

Manan

10mo

Hahaha, came here to say exactly this^

Michael Pfister

today

d e c e n
t r a
l i z e d

Get relevant onchain data

Get token balances, relevant token holders and more from FID or wallet address

|

1s

5m

1h

M

|

|

|

Price

/ MCap

|

DEGEN/WETH

$0.003789

Get relevant onchain data

Get token balances, relevant token holders and more from FID or wallet address

|

1s

5m

1h

M

|

|

|

Price

/ MCap

|

DEGEN/WETH

$0.003789

Build clients

Create scalable Farcaster apps with instant auth, rich profiles and feeds

Social

Discover

Videos

Deployer

@deployer

9h

$BNKR begins trading tomorrow on Coinbase. gg squad. my hope is that you got in when @bankr deployed the coin while talking with @mleejr right here on farcaster. we're here because of the extraordinary support and backing of all of you

Coinbase Assets

@CoinbaseAssets

Trading will begin on or after 9AM PT on 30 July 2025, if liquidity conditions are met. Once sufficient supply of these assets is established trading on our BNKR-USD trading pair will… our BNKR-USD trading pair will…

59

58

396

Build clients

Create scalable Farcaster apps with instant auth, rich profiles and feeds

Social

Discover

Videos

Deployer

@deployer

9h

$BNKR begins trading tomorrow on Coinbase. gg squad. my hope is that you got in when @bankr deployed the coin while talking with @mleejr right here on farcaster. we're here because of the extraordinary support and backing of all of you

Coinbase Assets

@CoinbaseAssets

Trading will begin on or after 9AM PT on 30 July 2025, if liquidity conditions are met. Once sufficient supply of these assets is established trading on our BNKR-USD trading pair will… our BNKR-USD trading pair will…

59

58

396

Run large data analyses

Access real-time Farcaster data streams, indexed databases, and analytics tools

https://data.hubs.neynar.com/…

Farcaster Insights

Refresh

Author: ghostlinkz

Total Users

0

7 hours ago

Total Casts

0

7 hours ago

Total casts per month

25M

25M

20M

15M

10M

5M

0

Run large data analyses

Access real-time Farcaster data streams, indexed databases, and analytics tools

https://data.hubs.neynar.com/…

Farcaster Insights

Refresh

Author: ghostlinkz

Total Users

0

7 hours ago

Total Casts

0

7 hours ago

Total casts per month

25M

25M

20M

15M

10M

5M

0

Products

anon@mail.xyz

Home

Connect Farcaster

MCP server

npx @mintlify/mcp@latest add neynar

MCP setup guide & llms.txt are here

Quick Links

Get your first API key

Create a webhook

Build an AI agent

Create a Farcaster mini app

Recent launches

Fetch quote casts

Fetch all quotes of
a given cast

Mini app starter kit

Fetch all quotes of
a given cast

Mint NFTs

Fetch all quotes of
a given cast

APIs

Integrate seamlessly with Farcaster using APIs, SDKs, hubs, and embedding tools for efficient development.

APIs

Integrate seamlessly with Farcaster using APIs, SDKs, hubs, and embedding tools for efficient development.

APIs

Integrate seamlessly with Farcaster using APIs, SDKs, hubs, and embedding tools for efficient development.

Accounts & auth

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

Accounts & auth

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

Accounts & auth

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

AI agents

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

AI agents

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

AI agents

Streamline onboarding by creating accounts and enabling secure, easy-to-implement sign-in solutions.

Data services

Access real-time data, stream events, and manage databases for advanced analytics and integrations.

Data services

Access real-time data, stream events, and manage databases for advanced analytics and integrations.

Data services

Access real-time data, stream events, and manage databases for advanced analytics and integrations.

Webhooks

Deliver real-time notifications to your backend for dynamic and responsive applications.

Webhooks

Deliver real-time notifications to your backend for dynamic and responsive applications.

Webhooks

Deliver real-time notifications to your backend for dynamic and responsive applications.

UI Components

Plug and play Farcaster components

UI Components

Plug and play Farcaster components

UI Components

Plug and play Farcaster components

Mini apps

Create mini-apps and keep users engaged with Push Notifications.

Mini apps

Create mini-apps and keep users engaged with Push Notifications.

Mini apps

Create mini-apps and keep users engaged with Push Notifications.

View all products:

View all

Explore Farcaster network

enter FID, hash, farcaster URL

Search by keyword

Type anything (even a username or a $ticker) and find casts with that keyword

Search by URL

Find a specific cast by pasting in a URL

Search by FID

Find and debug users or agents by FID

Search by Follow relationships

See following and blocking relationships between any two FIDs

Search by Feed API

Try any Feed API url from our docs to test results before you build a feed client

enter FID, hash, farcaster URL

Search by keyword

Type anything (even a username or a $ticker) and find casts with that keyword

Search by URL

Find a specific cast by pasting in a URL

Search by FID

Find and debug users or agents by FID

Search by Follow relationships

See following and blocking relationships between any two FIDs

Search by Feed API

Try any Feed API url from our docs to test results before you build a feed client

enter FID, hash, farcaster URL

Search by keyword

Type anything (even a username or a $ticker) and find casts with that keyword

Search by URL

Find a specific cast by pasting in a URL

Search by FID

Find and debug users or agents by FID

Search by Follow relationships

See following and blocking relationships between any two FIDs

Search by Feed API

Try any Feed API url from our docs to test results before you build a feed client

enter FID, hash, farcaster URL

Search by keyword

Type anything (even a username or a $ticker) and find casts with that keyword

Search by URL

Find a specific cast by pasting in a URL

Search by FID

Find and debug users or agents by FID

Search by Follow relationships

See following and blocking relationships between any two FIDs

Search by Feed API

Try any Feed API url from our docs to test results before you build a feed client

Refine your search

Combine filters and sorting modes for granular searches

Username

Channel ID

Mode

Sort type

Network response

Check propagation details across nodes and APIs

Merkle Snapchain

Merkle API

Neynar API

{
  "data": {
    "data": {
      "type": "MESSAGE_TYPE_CAST_ADD",
      "fid": 3095,
      "timestamp": 136913988,
      "network": "FARCASTER_NETWORK_MAINNET",
      "castAddBody": {
        "text": "Farcon fomo",
        "type": "CAST"
      }
    },
{
  "data": {
    "data": {
      "type": "MESSAGE_TYPE_CAST_ADD",
      "fid": 3095,
      "timestamp": 136913988,
      "network": "FARCASTER_NETWORK_MAINNET",
      "castAddBody": {
        "text": "Farcon fomo",
        "type": "CAST"
      }
    },

Results over time

View keyword incidence over time

Number of casts

farcon

80

60

40

20

0

1d

7d

30d

Get exploring

Let us know if you have feature requests, we're always improving our products.

Try explorer

Github

NodeJS SDK

Typescript SDK for Neynar APIs

Clone

NodeJS SDK

Typescript SDK for Neynar APIs

Clone

OAS

The OpenAPI specification for the Neynar APIs

Clone

OAS

The OpenAPI specification for the Neynar APIs

Clone

Create Farcaster mini app

npx script to quickstart Farcaster Mini Apps (formerly frames)

Clone

Create Farcaster mini app

npx script to quickstart Farcaster Mini Apps (formerly frames)

Clone

Farcaster Examples

A collection of Farcaster mini-apps powered by Neynar

Clone

Farcaster Examples

A collection of Farcaster mini-apps powered by Neynar

Clone

Sign In With Neynar

Open-source tooling for Sign In with Neynar

Clone

Sign In With Neynar

Open-source tooling for Sign In with Neynar

Clone

See all public repos:

Github

Farcaster 101

Farcaster is a protocol for building decentralized social apps.
All data is open, decentralized, and available on Farcaster hubs.
Neynar makes it easy to interface with this data.

Farcaster is a protocol for building decentralized social apps. All data is open, decentralized, and available on Farcaster hubs. Neynar makes it easy to interface with this data.

These are the main Farcaster primitives to keep in mind as you dive in:

These are the main Farcaster primitives to keep in mind as you dive in:

Users

Every user on Farcaster is represented by a permanent FID, the user’s numerical identifier.


All user profile data for this FID (username, display name, bio, etc) are stored on the Farcaster protocol and mapped to this FID.

To get a user FID, click on the ··· on their profile, then click on About.

Cast

Varun Srinivasan

@v

Follows you

Technowatermelon. Elder millennial. Building Farcaster.

1.7K

Following

278K

Followers

Los Angeles, USA

Unfollow

Message

Followed by @farcaster, @dwr.eth, @jacob and 1381 others you know

Cast

Varun Srinivasan

@v

Follows you

Technowatermelon. Elder millennial. Building Farcaster.

1.7K

Following

278K

Followers

Los Angeles, USA

Unfollow

Message

Followed by @farcaster, @dwr.eth, @jacob and 1381 others you know

To get a user FID, click on the ··· on their profile, then click on About.

Casts

Users can broadcast information to the protocol in units of information called casts. It’s somewhat similar to a post on X.


Each cast has a unique hash.

To get a cast hash, click on the ··· on the cast, then click on Copy cast hash.

@v

3mo

Warpcast is being rebranded to Farcaster

1. Mobile app will be called Farcaster
2. The Arch logo will return
3. Website will move from warpcast.com to farcaster.xyz.
4. All links will be backwards compatible. No action needed.

Will roll out this week or next, depending on app store reviews.

dwr.eth

in

fc-updates

3mo

We're planning to move forward with rebranding the Warpcast mobile and web app to Farcaster. 1. Nothing is changing any time soon. We will take our time with this and have plenty of communication about it across multiple channels. The earliest the change will happen is mid-May, but a decent chance it happens in June.

294 recasts

·

126 quotes

·

1.3K likes

·

18K views

@v

3mo

Warpcast is being rebranded to Farcaster

1. Mobile app will be called Farcaster
2. The Arch logo will return
3. Website will move from warpcast.com to farcaster.xyz.
4. All links will be backwards compatible. No action needed.

Will roll out this week or next, depending on app store reviews.

dwr.eth

in

fc-updates

3mo

We're planning to move forward with rebranding the Warpcast mobile and web app to Farcaster. 1. Nothing is changing any time soon. We will take our time with this and have plenty of communication about it across multiple channels. The earliest the change will happen is mid-May, but a decent chance it happens in June.

294 recasts

·

126 quotes

·

1.3K likes

·

18K views

To get a cast hash, click on the ··· on the cast, then click on Copy cast hash.

User relationships

Users can follow each other to see casts from them. This creates a social graph for each user on Farcaster.

You can use our Explorer to get data for a specific user relationship.

Followed by @dwr.eth and 1381 others you know

Followed by @dwr.eth and 1381 others you know

You can use our Explorer to get data for a specific user relationship.

Get a Neynar API key

Just create a free account below to get your key. Happy building!

If you need anything, we're always ready to help:

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Farcaster data SQL db & playground

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Haun Ventures

Union Square Ventures

a16z CSX

Coinbase Ventures

Zee Prime Capital

Hypersphere

Polymorphic Capital

Credibly Neutral

OrangeDAO

nonce classic

Mask

Social Graph Ventures

@balajis.eth

@sinahab

@v

@dwr.eth

@nadav

@linda

@henri

@jtgi

@colin

@emodi

@dcposch

@sanjay

@sds

@horsefacts.eth

@cmlad.eth

@antonio

@pplpleasr

@asvanevik

@max

@maurelian

@pankaj

@lay2000lbs

@dfinzer

@itai

@sammcingvale

@mats

@toly

@zedd

@zosegal

@kyle

@jomessin

@ilemi

@phil

@flynn.eth

@cameron

@rraina

@programmer

@jpren.eth

@robin

@bean

@chintan

@linus

Haun Ventures

Union Square Ventures

a16z CSX

Coinbase Ventures

Zee Prime Capital

Hypersphere

Polymorphic Capital

Credibly Neutral

OrangeDAO

nonce classic

Mask

Social Graph Ventures

@balajis.eth

@sinahab

@v

@dwr.eth

@nadav

@linda

@henri

@jtgi

@colin

@emodi

@dcposch

@sanjay

@sds

@horsefacts.eth

@cmlad.eth

@antonio

@pplpleasr

@asvanevik

@max

@maurelian

@pankaj

@lay2000lbs

@dfinzer

@itai

@sammcingvale

@mats

@toly

@zedd

@zosegal

@kyle

@jomessin

@ilemi

@phil

@flynn.eth

@cameron

@rraina

@programmer

@jpren.eth

@robin

@bean

@chintan

@linus

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$noice

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