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frames.js

frames.js is a TypeScript library and framework for writing and testing Farcaster Frames.

Features

  • ⚑️ Local frames debugger
  • πŸ₯³ Write Frames using React
  • πŸ”‹ Batteries included framework
  • 🌴 Tree-shakeable & Lightweight
  • πŸš€ Library with all the functions

Documentation

Look at our documentation to learn more about frames.js.

Installation

npm install frames.js
yarn add frames.js

Quick Start

Clone the frames.js starter template (with local debugger)

Run to clone the starter into a new folder called framesjs-starter

npx degit github:framesjs/frames.js/examples/framesjs-starter#main framesjs-starter

or clone from github

Alternatively, add frames.js to your existing project manually

1. Add frames.js to your project

yarn add frames.js

2. Create your Frames app

Create a frames directory in your Next.js app and add the following files:

./app/frames/frames.ts

import { createFrames } from "frames.js/next";

export const frames = createFrames({
  basePath: "/frames",
});

3. Create a Frames route

./app/frames/route.tsx

/* eslint-disable react/jsx-key */
import { Button } from "frames.js/next";
import { frames } from "./frames";

const handleRequest = frames(async (ctx) => {
  return {
    image: (
      <span>
        {ctx.pressedButton
          ? `I clicked ${ctx.searchParams.value}`
          : `Click some button`}
      </span>
    ),
    buttons: [
      <Button action="post" target={{ query: { value: "Yes" } }}>
        Say Yes
      </Button>,
      <Button action="post" target={{ query: { value: "No" } }}>
        Say No
      </Button>,
    ],
  };
});

export const GET = handleRequest;
export const POST = handleRequest;

4. Include Frames alongside your existing page's metadata

import { fetchMetadata } from "frames.js/next";

export async function generateMetadata() {
  return {
    title: "My Page",
    // ...
    other: {
      // ...
      ...(await fetchMetadata(
        // provide a full URL to your /frames endpoint
        new URL(
          "/frames",
          process.env.VERCEL_URL
            ? `https://${process.env.VERCEL_URL}`
            : "http://localhost:3000"
        )
      )),
    },
  };
}

export default function Page() {
  return <span>My existing page</span>;
}

5. Done! πŸŽ‰

Debugging your Frames locally

Prefer not to use a Framework?

You can use frames.js library helper functions instead

// page that renders a frame
// ./app/page.tsx

import { Frame, getFrameFlattened } from "frames.js";
import type { Metadata } from "next";

// Declare the frame
const initialFrame: Frame = {
  image: "https://picsum.photos/seed/frames.js/1146/600",
  version: "vNext",
  buttons: [
    {
      label: "Random image",
    },
  ],
  postUrl: `${process.env.NEXT_PUBLIC_HOST}/frames`,
};

// Export Next.js metadata
export const metadata: Metadata = {
  title: "Random Image Frame",
  description: "This is an example of a simple frame using frames.js",
  openGraph: {
    images: [
      {
        url: "https://picsum.photos/seed/frames.js/600",
      },
    ],
  },
  other: getFrameFlattened(initialFrame),
};
// handle frame actions
// ./app/frames/route.ts

import { getFrameHtml, validateFrameMessage } from "frames.js";
import { NextRequest } from "next/server";

export async function POST(request: NextRequest) {
  const body = await request.json();

  // Parse and validate the frame message
  const { isValid, message } = await validateFrameMessage(body);
  if (!isValid || !message) {
    return new Response("Invalid message", { status: 400 });
  }

  const randomInt = Math.floor(Math.random() * 100);
  const imageUrlBase = `https://picsum.photos/seed/${randomInt}`;

  // Use the frame message to build the frame
  const frame = {
    version: "vNext",
    image: `${imageUrlBase}/1146/600`,
    buttons: [
      {
        label: `Next (pressed by ${message.data.fid})`,
      },
    ],
    ogImage: `${imageUrlBase}/600`,
    postUrl: `${process.env.NEXT_PUBLIC_HOST}/frames`,
  };

  // Return the frame as HTML
  const html = getFrameHtml(frame);

  return new Response(html, {
    headers: {
      "Content-Type": "text/html",
    },
    status: 200,
  });
}

License

Distributed under an MIT License. See LICENSE for more information.

Community

Check out the following places for more Frames-related content:

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The fastest way to make a Farcaster Frame

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  • JavaScript 2.4%
  • CSS 2.4%
  • HTML 0.1%