qntx

Multi-chain cryptocurrency wallet CLI tool for generating, importing, and managing HD wallets across 12 chains: Aptos, Bitcoin, Ethereum, Solana, Cosmos, Tron, Sui, TON, Filecoin, Spark, XRP Ledger, and Nostr. Use when the user asks to create wallets, generate addresses, derive keys, import mnemonics, produce NIP-19 `npub` / `nsec` identities, or perform any cryptocurrency wallet operation. Supports JSON output via --json flag.

Send and receive messages via the XMTP decentralized messaging protocol using the xmtp CLI tool. Use when the user asks to send, read, or monitor XMTP messages, manage conversations, create DMs or groups, check address reachability, or interact with the XMTP network.

Multi-chain transaction signing CLI tool for 12 chains: Ethereum, Bitcoin, Solana, Cosmos, Tron, Sui, TON, Filecoin, Spark, XRP Ledger, Aptos, and Nostr. Use when the user asks to sign messages, sign hashes, sign transactions, sign Nostr events, or look up addresses / public keys / NIP-19 npub / nsec from private keys. Supports JSON output via --json flag for programmatic/agent consumption.

HTML-to-Markdown converter CLI with optional web search. Use when the user asks to convert HTML to Markdown, scrape web pages to Markdown, batch-scrape URLs, search the web (SearXNG / Brave / Tavily) and get structured results, or pipe search hits through a scrape-to-Markdown pipeline. The CLI exposes two subcommands: `convert` (URL / file / stdin → Markdown) and `search` (web search with optional `--scrape` that funnels every hit through the same converter). Supports CommonMark, GFM, JSON/NDJSON streaming output with nested camelCase metadata, readable extraction, CSS selectors, and relative URL resolution.

CAIP-122 Sign-In with X CLI tool for generating signing messages and verifying signatures across Ethereum and Solana. Use when the user asks to create sign-in challenges, verify wallet signatures, generate nonces, or parse CAIP-122 messages. Supports JSON output via --json flag for agent consumption.