CapClient

Node module for verifying response tokens with Cap server. Also provides an Express middleware.

No additional dependencies. Requires nodejs 18.0+ (uses Fetch API). Types included.

Install

npm install cap-client

Usage

import { CapClient } from 'cap-client';

const cap = new CapClient({
    instance: 'https://cap.example.com', // instance includes the protocol. Doesn't have to be the public hostname necessarily.
    key: '1234',
    secret: 's3cr3t'
});

const result = await cap.verifyToken('t0k3n'); // token comes from the client


// Or use the middleware:

const app = express();

app.post('/submit', cap.middleware, (req, res) => {
    if (req.capResponse) {
        res.send('verified by cap');
    }
    else {
        res.send('cap verification failed');
    }
});

// Note that body must be parsed

Development

pnpm install
pnpm run build
pnpm test