🎭Allow List

Learn how to build an Allow List for your Farcaster Frames based on various criterias by using the Airstack Frames SDK.

You can limit access to your Farcaster Frame to only certain users that fulfill a requirement by creating an allow list based on certain criteria.

Get Started

First, install the Airstack Frog Recipes:

npm install @airstack/frog hono

yarn add @airstack/frog hono

pnpm install @airstack/frog hono

bun install @airstack/frog hono

Create A Custom Allow List

You can create an allow list that checks various onchain data easily using the createAllowList function. Some of the parameters that you can add to the allow list are:

Name Type Description

Name	Type	Description
`numberOfFollowersOnFarcaster`	number	Check If the number of Farcaster followers greater than or equal to the given number.
`isFollowingOnFarcaster`	`number[]`	Check if the given FIDs are being followed by a Farcaster user.

numberOfFollowersOnFarcaster

number

Check If the number of Farcaster followers greater than or equal to the given number.

isFollowingOnFarcaster

number[]

Check if the given FIDs are being followed by a Farcaster user.

Once you have the criteria set, the function will help you check whether all the criterias are fulfilled.

By default, it will only return true for Farcaster users that satisfy ALL the given requirements. However, if you would like to check your user with a different logic, you can provide an optional custom isAllowedFunction:

import {
  createAllowList,
  CreateAllowListInput,
  CreateAllowListOutput,
  TokenBlockchain,
} from "@airstack/frames";

const allowListCriteria = {
  numberOfFollowersOnFarcaster: 100,
  isFollowingOnFarcaster: [2602],
};
const input: CreateAllowListInput = {
  fid: 602,
  allowListCriteria,
  isAllowedFunction: function (data) {
    console.log(data);
    return true;
  },
};
const { isAllowed, error }: CreateAllowListOutput = await createAllowList(
  input
);

if (error) throw new Error(error);

console.log(isAllowed);

const { createAllowList, TokenBlockchain } = require("@airstack/frames");

const allowListCriteria = {
  numberOfFollowersOnFarcaster: 100,
  isFollowingOnFarcaster: [2602],
};
const input = {
  fid: 602,
  allowListCriteria,
  isAllowedFunction: function (data) {
    console.log(data);
    return true;
  },
};
const { isAllowed, error } = await createAllowList(input);

if (error) throw new Error(error);

console.log(isAllowed);

{
  "isAllowed": true,
  "error": null
}

Check If User Is Following Farcaster User(s)

You can check if a Farcaster user is following a list of FIDs by using the checkIsFollowingFarcasterUser function:

import {
  checkIsFollowingFarcasterUser,
  CheckIsFollowingFarcasterUserInput,
  CheckIsFollowingFarcasterUserOutput,
} from "@airstack/frames";

const input: CheckIsFollowingFarcasterUserInput = {
  fid: 602,
  isFollowing: [2602, 15971, 13242],
};
const { data, error }: CheckIsFollowingFarcasterUserOutput =
  await checkIsFollowingFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

const { checkIsFollowingFarcasterUser } = require("@airstack/frames");

const input = {
  fid: 602,
  isFollowing: [2602, 15971, 13242],
};
const { data, error } = await checkIsFollowingFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

[
  { "fid": 2602, "isFollowing": true },
  { "fid": 15971, "isFollowing": true },
  { "fid": 13242, "isFollowing": false }
]

Check If User Is Followed By Farcaster User(s)

You can check if a Farcaster user is being followed by a list of FIDs by using the checkIsFollowedByFarcasterUser function:

import {
  checkIsFollowedByFarcasterUser,
  CheckIsFollowedByFarcasterUserInput,
  CheckIsFollowedByFarcasterUserOutput,
} from "@airstack/frames";

const input: CheckIsFollowedByFarcasterUserInput = {
  fid: 602,
  isFollowedBy: [2602, 15971, 13242],
};
const { data, error }: CheckIsFollowedByFarcasterUserOutput =
  await checkIsFollowedByFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

const {
  checkIsFollowedByFarcasterUser,
  CheckIsFollowedByFarcasterUserInput,
  CheckIsFollowedByFarcasterUserOutput,
} = require("@airstack/frames");

const input = {
  fid: 602,
  isFollowedBy: [2602, 15971, 13242],
};
const { data, error } = await checkIsFollowedByFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

[
  { "fid": 2602, "isFollowedBy": true },
  { "fid": 15971, "isFollowedBy": true },
  { "fid": 13242, "isFollowedBy": false }
]

Check If Farcaster User Is Followed By Certain High Profile Users

You can check if the Farcaster user is followed by certain high profile users, e.g. vitalik.eth, jessepollak, etc., by using the checkIsFollowedByFarcasterUser function:

import {
  checkIsFollowedByFarcasterUser,
  CheckIsFollowedByFarcasterUserInput,
  CheckIsFollowedByFarcasterUserOutput,
} from "@airstack/frames";

const input: CheckIsFollowedByFarcasterUserInput = {
  fid: 602,
  isFollowedBy: [
    99, // jessepollak
    5650, // vitalik.eth
  ],
};
const { data, error }: CheckIsFollowedByFarcasterUserOutput =
  await checkIsFollowedByFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

const { checkIsFollowedByFarcasterUser } = require("@airstack/frames");

const input = {
  fid: 602,
  isFollowedBy: [
    99, // jessepollak
    5650, // vitalik.eth
  ],
};
const { data, error } = await checkIsFollowedByFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

[
  { "fid": 99, "isFollowedBy": true },
  { "fid": 5650, "isFollowedBy": false }
]

Check If Farcaster User Follows The Creator Of The Frames

You can check if the Farcaster user follows the Frames' creator by using the checkIsFollowingFarcasterUser function:

import {
  checkIsFollowingFarcasterUser,
  CheckIsFollowingFarcasterUserInput,
  CheckIsFollowingFarcasterUserOutput,
} from "@airstack/frames";

const input: CheckIsFollowingFarcasterUserInput = {
  fid: 3,
  isFollowing: [99],
};
const { data, error }: CheckIsFollowingFarcasterUserOutput =
  await checkIsFollowingFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

import {
  checkIsFollowingFarcasterUser,
  CheckIsFollowingFarcasterUserInput,
  CheckIsFollowingFarcasterUserOutput,
} from "@airstack/frames";

const input: CheckIsFollowingFarcasterUserInput = {
  fid: 3, // The creator of frame
  isFollowing: [99], // The fid of user interacting with your frames
};
const { data, error }: CheckIsFollowingFarcasterUserOutput =
  await checkIsFollowingFarcasterUser(input);

if (error) throw new Error(error);

console.log(data);

[{ "fid": 99, "isFollowing": true }]

Check If Farcaster User Has Casted In A Given Channel

You can check if Farcaster user has casted in a given channel by using the FarcasterChannelParticipants API and providing:

the "cast" value to the $channelActions variable,
the channel ID (e.g. /farcaster channel ID is "farcaster") to $channelId variable, and
the FID to the $participant variable

Try Demo

Code

query MyQuery {
  FarcasterChannelParticipants(
    input: {
      filter: {
        participant: { _eq: "fc_fid:602" }
        channelId: { _eq: "airstack" }
        channelActions: { _eq: cast }
      }
      blockchain: ALL
    }
  ) {
    FarcasterChannelParticipant {
      lastActionTimestamp
    }
  }
}

{
  "data": {
    "FarcasterChannelParticipants": {
      "FarcasterChannelParticipant": [
        {
          "lastActionTimestamp": "2024-02-23T17:12:13Z"
        }
      ]
    }
  }
}

Developer Support

If you have any questions or need help building an allow list for your Farcaster Frames using the Airstack Frames SDK, please join our Airstack's Telegram group.

More Resources

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Last updated 3 months ago