Guides

Topic-organised guides covering everything beyond the API spec — wallet onboarding, key rotation, sandbox testing, AI-agent integration, and the three-way project-kind model.

Wallets and keys

• How to export your xpub — Ledger Live, Sparrow, Electrum, Cardano CIP-30.
• Wallets — privacy, the pool model, archival, rotation.
• Balance Sync — staleness signals and the gap-limit caveat per chain family.
• API keys — generate, rotate, revoke.
• Personal Access Tokens — PAT scopes and the mandatory-expiry policy.

Invoices, webhooks, chains

• Invoices — reorg safety and per-chain confirmation thresholds.
• Configuring partner webhooks — URL requirements and the HMAC signing protocol.
• Supported chains — fifteen-asset / seven-chain matrix with default thresholds.

Sandbox-first testing

• Sandbox projects — create a sandbox, walk the agent loop, graduate to production.
• Sandbox safety — per-chain truth table, seven-layer defense, and the recommended CI assertion.
• Agent-driven testing — how an AI coding agent walks all 7 webhook events deterministically.
• Project kinds — production, testnet, and sandbox discriminator.

MCP server

• MCP OAuth 2.1 — discovery, registration, PKCE, audience binding, token TTLs.
• Connect Claude Code — HTTP transport with OAuth or PAT.
• Connect Cursor — HTTP transport.
• Connect Claude Desktop — via the @txnod/mcp-stdio wrapper.

Billing and admin

• Billing — subscription expiry and payment-proportional top-ups.
• Admin actions on your account — what is audit-logged when an admin grants or grandfathers your account.