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Block, Inc.

Block, Inc. is a global financial-technology company building products for economic empowerment across payments, consumer finance, commerce, Bitcoin, music, and AI.
Oakland, United States

Bitkey


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Description

Bitkey is a Bitcoin self-custody wallet built as one integrated system combining security, recovery, and inheritance. It uses a 2-of-3 multisig model where the user holds two keys and a third key exists solely for recovery, meaning no single device, key, or company can move the user's Bitcoin alone. The device features an on-device screen to verify transactions and sensitive account changes, a biometric fingerprint sensor, NFC connectivity, a Corian Solid Surface exterior, an OLED touchscreen, and up to a year of battery life, removing the need for seed phrase handoffs or complicated setup. It serves everyday Bitcoin holders seeking a simpler, more resilient alternative to exchanges (which involve custodial risk) and typical hardware wallets (which rely on a single seed phrase as a single point of failure). Bitkey costs $250 and is sold directly via the company's website, with supporting resources including a blog, learning hub, and support site. Bitkey is a product of Block, Inc.

Category: Hardware Wallet

TIDAL


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Description

TIDAL is a global subscription music-streaming platform for listeners, artists, and DJs. It provides ad-free and offline listening, lossless and Hi-Res FLAC audio, Dolby Atmos content, personalized mixes, editorial playlists, family plans, and integrations for DJ software. TIDAL also operates a developer platform with public APIs and SDKs. The service is part of Block, Inc.

Category: Music

AI Rules Tools


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Description

AI Rules Tools manages AI rules, commands, and skills from a shared source and generates agent-specific configuration for AMP, Claude Code, Cline, Codex, Copilot, Cursor, Firebender, Gemini, Goose, Kilocode, and Roo. It supports synchronization checks, selective generation, and MCP configuration generation.

Category: Developer Tooling

Jupyter MCP Server


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Description

Jupyter MCP Server is a Python-based Model Context Protocol server for pairing MCP-compatible AI clients such as Goose and Cursor with JupyterLab notebooks. It provides consolidated tools for querying notebooks, modifying cells, executing code and installing packages, and setting up notebook sessions. Its architecture uses Jupyter’s REST API for agent operations and optional Real-Time Collaboration for browser synchronization.

Category: Developer Tooling

Buzz


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Description

Buzz is an open-source collaboration workspace from Block, Inc. It combines human and AI-agent identities in a signed Nostr event log, with channels, threads, DMs, canvases, media, search, audit logs, workflows, Git events, a desktop app, and agent tooling. The repository explicitly states that Buzz is not a blockchain.

Category: Uncategorized

Berd


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Description

Berd is a standalone Tauri desktop workspace for AI-agent work. It supports projects, chats, agents, skills, extensions, automations, model providers, workspace context, and session history, and communicates with the upstream Goose backend through ACP.

Category: AI Agent Platform

Afterpay


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Description

Afterpay is a live consumer and merchant payment service. Its core Pay in 4 product lets customers pay the first installment upfront and the remainder over six weeks; eligible customers can also use longer monthly plans. Customers access it through merchant checkout, the Afterpay app, and the digital Afterpay Card, while merchants receive payment upfront.

Category: Payments Infrastructure