@solana/keychain-crossmint

Crossmint wallet signer for Solana transactions using Crossmint Wallets API.

Installation

pnpm add @solana/keychain-crossmint

Usage

import { createCrossmintSigner } from '@solana/keychain-crossmint';

const signer = await createCrossmintSigner({
    apiKey: process.env.CROSSMINT_API_KEY!,
    walletLocator: process.env.CROSSMINT_WALLET_LOCATOR!,
});

Configuration

| Field | Type | Required | Default | Description | |-------|------|----------|---------|-------------| | apiKey | string | Yes | - | Crossmint API key | | walletLocator | string | Yes | - | Crossmint wallet locator | | apiBaseUrl | string | No | https://www.crossmint.com/api | Base URL for Wallets API | | pollIntervalMs | number | No | 1000 | Poll interval for managed transaction flow | | maxPollAttempts | number | No | 60 | Max poll attempts before timeout | | signer | string | No | - | Optional delegated signer locator |

Behavior Notes

1. signTransactions uses a managed flow similar to Fireblocks PROGRAM_CALL style: create transaction, poll status, then extract a signature from Crossmint response data.
2. signMessages is intentionally unsupported and throws a signer error.

License

MIT