Action Codes Relayer SDK

> This is quick start guide for the Action Codes SDK. For more detailed API reference or Protocol documentation see docs.actioncodes.org

The Relayer SDK provides a simple, fully-typed interface to interact with any Action Codes relayer server (e.g. relay.actioncodes.org). It allows developers to generate, publish, resolve, consume, redeem, and finalize one-time action codes across supported blockchains. Currently, only Solana is supported.

To generate Action Codes visit Action Code App

We are hard at work making codes available in Solana wallets natively. Your support and commitment to the protocol is greatly appreciated.

Features

- Fully compatible with @actioncodes/protocol
- For relayer reference implementation see @actioncodes/relayer
- All types from @actioncodes/protocol are re-exported for convenience
- Typed methods for all relayer endpoints
- Built-in polling with idempotent state observation
- Protocol client integration for code generation and revocation
- Works in browsers, Node.js, and edge runtimes

Authentication

The SDK uses authentication via API key.
You can get your API key by contacting the Action Codes team.
_Soon it will be available to obtain via the dashboard at actioncodes.org._

``ts
const client = new Client(Prod, {
auth: { authorization: "Bearer your-api-key" },
});
`

Installation

`bash
npm install @actioncodes/sdk
`

Quick Start (Accepting Action Codes and sending transactions)

This example shows how to accept an action code and send a transaction or message to sign or execute to the code owner.

`ts
import Client, { Environment, Local, Prod } from "@actioncodes/sdk";

// Create a client with authentication
const client = new Client(Prod, {
auth: {
authorization: "Bearer your-api-key",
},
});

// Consume a provided action code (attach a transaction)
// After that action code is waiting for a transaction to be signed and executed
// by the code owner (user who generated the code).
await client.relay.consume({
code: actionCode.code,
chain: "solana",
payload: {
mode: "sign-and-execute-transaction",
transaction: serializedTx,
},
});

// Observe status changes (only yields when state type changes)
for await (const state of client.relay.observe("solana", actionCode.code)) {
console.log("State changed:", state.type);
if (state.type === "finalized-execution") {
console.log("Transaction hash:", state.txHash);
break;
}
}
`

Quick Start (Generating and Publishing Action Codes)

This example shows how to generate and publish an action code so it can be redeemed by the code owner.

`ts
import Client, { Environment, Local, Prod } from "@actioncodes/sdk";

// Create a client with authentication
const client = new Client(Prod, {
auth: {
authorization: "Bearer your-api-key",
},
});

// Generate and publish an action code
const actionCode = await client.protocol.generateActionCode(
pubkey,
"solana" as Chain,
async (message) => {
// sign this message and return the signature
}
);

// Redeem an action code
await client.relay.redeem({
code: actionCode.code,
chain: "solana",
payload: {
mode: "redeem-code",
intendedFor: redeemerPubkey,
},
});

// Observe status changes (only yields when state type changes)
for await (const state of client.relay.observe("solana", actionCode.code)) {
console.log("State changed:", state.type);
if (state.type === "redeemed") {
console.log("Code was redeemed");
// Once redeemed you know who is the code owner and can send a transaction or message to sign or execute to the code owner.
await client.relay.consume({
code: actionCode.code,
chain: "solana",
payload: {
mode: "sign-and-execute-transaction",
transaction: serializedTx,
},
});
break;
}

if (state.type === "finalized-execution") {
console.log("Transaction hash:", state.txHash);
break;
}
}
`

API Overview

$3

We support two online environments:

- production - production environment (points to relay.actioncodes.org)
- development - development environment (points to dev.relay.actioncodes.org)

`ts
import Client, { Environment, Local, Prod } from "@actioncodes/sdk";

// Using predefined environments
const client = new Client(Prod, {
auth: { authorization: "Bearer your-api-key" },
});

// Using environment helper
const client = new Client(Environment("production"), {
auth: { authorization: "Bearer your-api-key" },
});

// Local development if you are running the relayer locally
const client = new Client(Local, {
auth: { authorization: "Bearer your-api-key" },
});
`

$3

The protocol client allows you to generate and revoke action codes:

`ts
// Initialize protocol client
client.withProtocol(config);

// Generate an action code
const actionCode = await client.protocol.generateActionCode(
pubkey,
"solana" as Chain,
signFn
);

// Revoke an action code
const revoke = await client.protocol.revokeActionCode(
actionCode,
"solana" as Chain,
signFn
);

// Generate and publish in one step
const actionCode = await client.generateAndPublish(
pubkey,
"solana" as Chain,
signFn
);
`

$3

The relayer client provides methods for interacting with the relayer server:

`ts
// Publish an action code
await client.relay.publishWallet({
code: actionCode.code,
chain: "solana",
expiresAt: actionCode.expiresAt,
pubkey: pubkey,
timestamp: actionCode.timestamp,
signature: actionCode.signature,
});

// Resolve an action code
const resolved = await client.relay.resolve("solana", actionCode.code);

// Consume an action code (attach payload)
await client.relay.consume({
code: actionCode.code,
chain: "solana",
payload: {
mode: "sign-only-transaction",
transaction: serializedTx,
},
});

// Redeem an action code
await client.relay.redeem({
code: actionCode.code,
chain: "solana",
payload: {
mode: "redeem-code",
intendedFor: redeemerPubkey,
},
});

// Finalize an action code
await client.relay.finalize({
code: actionCode.code,
chain: "solana",
payload: {
mode: "sign-and-execute-transaction",
txHash: transactionHash,
},
});

// Observe status changes (idempotent - only yields on state type changes)
for await (const state of client.relay.observe("solana", actionCode.code)) {
switch (state.type) {
case "sign-message":
// Handle message signing request
break;
case "sign-transaction":
// Handle transaction signing request
break;
case "execute-transaction":
// Handle transaction execution request
break;
case "finalized-message":
// Message was signed
break;
case "finalized-transaction":
// Transaction was signed
break;
case "finalized-execution":
// Transaction was executed
break;
case "redeemed":
// Code was redeemed
break;
}
}

// Revoke an action code
await client.relay.revokeWallet({
code: actionCode.code,
chain: "solana",
// ... other revocation parameters
});

// Health check
const health = await client.relay.health();
`

$3

All types from @actioncodes/protocol are available directly from the SDK:

`ts
import {
ActionCode,
ActionCodeRevoke,
ActionCodesProtocol,
Chain,
CodeGenerationConfig,
SignFn,
SolanaAdapter,
} from "@actioncodes/sdk";
`

Detailed API Reference

See docs.actioncodes.org for complete API documentation.

🛡 Error Handling

The SDK uses standard JavaScript errors. Check the response status and error messages:

`ts
try {
const resolved = await client.relay.resolve("solana", "12345678");
} catch (err) {
if (err instanceof Error) {
console.error(err.message);
}
}
``

📘 Related Packages

- @actioncodes/protocol — core protocol for deterministic code generation
- @actioncodes/relayer-v2 — default relayer implementation
- @actioncodes/sdk — SDK for Action Codes

🔒 Security

- ActionCodes are short-lived (2 minute TTL by default)
- All transaction payloads are encrypted using code-derived keys
- Relayers validate protocol signatures and metadata before accepting data

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Made with ❤️ by the Action Codes team