TypeScript SDK

npm install @grantex/sdk@0.3.13

import { Grantex } from '@grantex/sdk';

const grantex = new Grantex({
  apiKey: process.env.GRANTEX_API_KEY,  // required (or set GRANTEX_API_KEY env var)
  baseUrl: 'https://api.grantex.dev',   // optional, defaults to production
  timeout: 30_000,                       // optional, request timeout in ms
});

import { Grantex, verifyGrantToken } from '@grantex/sdk';

const grantex = new Grantex({ apiKey: process.env.GRANTEX_API_KEY });

// 1. Register an agent
const agent = await grantex.agents.register({
  name: 'travel-booker',
  description: 'Books flights and hotels on behalf of users',
  scopes: ['calendar:read', 'payments:initiate:max_500', 'email:send'],
});
console.log(agent.did);
// → did:grantex:ag_01HXYZ123abc...

// 2. Request user authorization
const authRequest = await grantex.authorize({
  agentId: agent.id,
  userId: 'user_abc123',
  scopes: ['calendar:read', 'payments:initiate:max_500'],
  expiresIn: '24h',
  redirectUri: 'https://yourapp.com/auth/callback',
});
// Redirect the user to authRequest.consentUrl

// 3. Exchange the authorization code for a grant token
const token = await grantex.tokens.exchange({
  code,                  // from the redirect callback
  agentId: agent.id,
});
console.log(token.grantToken);  // RS256 JWT
console.log(token.scopes);      // ['calendar:read', 'payments:initiate:max_500']

// 4. Verify signature and claims locally after fetching the remote JWKS
const grant = await verifyGrantToken(token.grantToken, {
  jwksUri: 'https://api.grantex.dev/.well-known/jwks.json',
  requiredScopes: ['calendar:read'],
});
console.log(grant.principalId); // 'user_abc123'

// 5. Revoke the token when done
await grantex.tokens.revoke(grant.tokenId);