Access Gate Middleware

$10

Backend middleware that checks NFT/token ownership before granting API or content access.

📁 12 files

TypeScriptJSONMarkdownRedis

📁 File Structure 12 files

access-gate-middleware/ ├── LICENSE ├── README.md ├── package.json ├── security-notes.md ├── src/ │ ├── abi/ │ │ └── contracts.ts │ ├── index.ts │ ├── middleware/ │ │ ├── expressGate.ts │ │ └── nextGate.ts │ └── utils/ │ ├── cache.ts │ └── chainVerifier.ts ├── test/ │ └── accessGate.test.ts └── tsconfig.json

📖 Documentation Preview README excerpt

Access Gate Middleware

Sub Protocol Product #3 — CryptoForge Store #5

Express and Next.js middleware for token-gated access control. Checks ERC-721, ERC-1155, or custom subscription contract ownership on-chain.

Features

Express middleware for REST API gating
Next.js middleware adapter for page/route gating
ERC-721 and ERC-1155 ownership verification
Custom membership contract support (Sub Protocol #1 compatible)
Redis-compatible caching layer
Rate limiting per wallet address
Configurable grace period for expired subscriptions
Full TypeScript with type definitions

Quick Start


npm install @cryptoforge/access-gate-middleware

Express


import express from "express";
import { createAccessGate } from "@cryptoforge/access-gate-middleware";

const app = express();

const gate = createAccessGate({
  rpcUrl: "https://eth.llamarpc.com",
  contractAddress: "0xYourMembershipNFT",
  contractType: "membership",
  minTierId: 1, // Silver or above
});

app.get("/api/premium", gate, (req, res) => {
  res.json({ message: "Welcome, subscriber!" });
});

Next.js


import { createNextGate } from "@cryptoforge/access-gate-middleware";
import { NextResponse } from "next/server";

export const middleware = createNextGate({
  rpcUrl: process.env.RPC_URL!,
  contractAddress: process.env.NFT_CONTRACT!,
  contractType: "erc721",
  protectedPaths: ["/dashboard", "/api/premium"],
}, NextResponse);

License

MIT

... continues with setup instructions, usage examples, and more.

📄 Code Sample .ts preview

src/index.ts /** * ╔══════════════════════════════════════════════════════════════════════╗ * ║ ACCESS GATE MIDDLEWARE ║ * ║ NFT Ownership & Subscription Verification ║ * ║ Sub Protocol #3 — CryptoForge ║ * ╚══════════════════════════════════════════════════════════════════════╝ */ export { createAccessGate, type AccessGateConfig } from "./middleware/expressGate"; export { createNextGate, type NextGateConfig } from "./middleware/nextGate"; export { ChainVerifier, type VerificationResult } from "./utils/chainVerifier"; export { CacheLayer, type CacheConfig } from "./utils/cache"; export { ERC721_ABI, ERC1155_ABI, MEMBERSHIP_NFT_ABI, } from "./abi/contracts";

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