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dpp-wallet-sdk

v0.1.0-alpha.0

Published

Wallet issuer SDK for Delegated Payments Protocol — capability issuance, OAuth linking, intent FSM, and JWKS discovery.

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Links

Git

Maintainers

roopamgargroopamgarg

Keywords

dppdelegated-paymentswalletissueroauth

Readme

dpp-wallet-sdk (v0.1 alpha scaffold)

Wallet issuer SDK for the Delegated Payments Protocol. Mirrors dpp-merchant-sdk ergonomics: TypeScript, ESM, DPPError codes, and normative JSON schemas from specs/schemas/.

Status: Package scaffold + API RFC. Method bodies throw not_implemented until AGE-36–AGE-38 land.

Install (future)

npm install dpp-wallet-sdk@alpha

Not yet published. Use monorepo file:../../wallet-sdk during development.

Quick start (sketch)

import { createWalletIssuer } from 'dpp-wallet-sdk';

const wallet = createWalletIssuer({
  issuer: 'https://wallet.example/issuer',
  signingKey: {
    type: 'kms',
    keyId: 'alias/dpp-signing',
    kid: '2026-05',
    publicJwk: { kty: 'EC', crv: 'P-256', x: '...', y: '...', alg: 'ES256', use: 'sig' },
  },
  defaultCapabilityTtlSeconds: 600,
  // Production: inject kmsSigner for your KMS/HSM (AWS helper is optional — see docs/operations/wallet-kms-signing.md)
});

// Alpha scaffold — implementations in AGE-36–AGE-38:
const { compactJws } = await wallet.issueCapability({
  sub: 'did:key:z6Mk…',
  scopes: ['pay:initiate'],
  constraints: {
    maxAmount: { value: '500.00', currency: 'INR' },
    merchantAllowlist: ['merchant:demo'],
  },
});

API surface (RFC)

| Module | Export | Purpose | |--------|--------|---------| | Issuer | createWalletIssuer, DPPWalletIssuer | Root client | | Capabilities | issueCapability | Sign capability JWS | | Intents | createIntent, submitIntent, getIntentStatus, resumeAfterUserAction | Intent FSM | | Binding | computeIntentDigest | Canonical digest for intentBind | | Agents | registerAgent, revokeAgent | Agent registry | | OAuth | createAuthorizationUrl, exchangeCode, revokeDelegation | Agent linking (PKCE) | | Crypto | exportJwks, rotateKeys | Merchant discovery |

Full contract: docs/rfc/dpp-wallet-sdk-api.md.

Integration guide

See docs/integration-guides/wallet-sdk.md for end-to-end wiring, KMS signing, security checklist, and API reference. Run the wallet-issuer example or express-wallet-issuer locally.

Develop

cd sdk/wallet-sdk
npm install
npm test

Related specifications