Client Example

The official example client is available here:

https://github.com/mntgmry-tech/atomic-stream-examples

It demonstrates:

x402 HTTP payment flow for schema and renew
WebSocket connection and control messages
Renewal handling (http and inband modes)
Structured logging for events and status

Key scripts

bash

npm run dev
npm run build
npm start

Environment variables

The example uses these variables (full list in .env.example):

SVM_PRIVATE_KEY (required)
PUBLIC_HTTP_BASE_URL (default https://x402.atomicstream.net)
X402_SCHEMA_PATH (default /v1/schema/stream/mempool-sniff; set to /v2/schema/stream/<id> for v2)
RENEW_METHOD (http or inband)
WATCH_ACCOUNTS, WATCH_PROGRAMS
EVENT_FORMAT, INCLUDE_ACCOUNTS, INCLUDE_TOKEN_BALANCE_CHANGES
INCLUDE_LOGS, INCLUDE_INSTRUCTIONS, FILTER_TOKEN_BALANCES

Keypair conversion helper

If you have a Solana CLI keypair file:

bash

npm run keypair-to-base58 -- ~/.config/solana/id.json