Endless Sky Inc.

To provide developers with the tools and infrastructure needed to build powerful, scalable, and real-time Web3 applications faster by simplifying the complexity of on-chain data.

Built as the data platform for financial products on stablecoins, Goldsky provides fintechs and financial institutions with real-time blockchain data infrastructure to launch accounts, payments, custody, and settlement products without becoming blockchain companies themselves. The platform continuously indexes onchain activity across dozens of networks with production-grade latency and reliability, powering high-volume products at companies like Polymarket, 0x, Kraken, and Circle. As stablecoins evolve from crypto primitives into mainstream financial infrastructure, Goldsky abstracts away the messy parts — chains, RPCs, reorgs, indexing — so companies can ship the financial products their customers actually want.

Products

Goldsky's core products include Subgraphs for instant GraphQL APIs that query onchain data with zero maintenance, Mirror for streaming real-time blockchain data directly into databases like PostgreSQL and ClickHouse, and Edge RPC providing high-performance endpoints across 40+ EVM networks. Compose automates onchain finance workflows between offchain systems and blockchains using TypeScript. The platform is powered by Streamling, a Rust-based data processing runtime that the company open-sourced to improve efficiency across the ecosystem.

Funding

Goldsky has raised over $20 million, with the primary round being a $20 million seed in September 2022 led by Felicis Ventures and Dragonfly Capital. The round included participation from 0x Labs, Uniswap Labs, Protocol Labs, and notable angel investors including Plaid founders Zach Perret and William Hockey, plus Zhuoxun Yin of Magic Eden. The company previously secured approximately $1.4 million in a pre-seed round in October 2021.

Recent news

In April 2026, Goldsky launched a partnership with Circle to introduce "Nanopayments" for its Edge RPC and subgraph services, allowing developers and agents to pay for data access per-request using stablecoins without requiring API keys or user accounts. Subsequently, in June 2026, the company open-sourced its internal data processing runtime, Streamling, which it utilized to significantly optimize its own Turbo streaming pipelines. (Note: Public records regarding a separate entity named "Goldsky Resources" should be distinguished from this technology company.)

Technology

The core infrastructure runs on Rust with Apache Arrow and DataFusion for high-throughput, low-latency data processing. Streamling, their open-source runtime, supports WASM plugins and powers the Turbo streaming infrastructure. Frontend and customer-facing tools use TypeScript and Next.js, while backend systems operate on AWS and GCP with heavy Kubernetes orchestration. Growth engineering involves AI workflows through Anthropic and OpenAI APIs, agent frameworks, and integrations with Slack, Notion, CRM systems, and marketing analytics tools.

Benefits

Health, dental, and vision insurance is fully employer-paid for employees and families. The 401(k) plan runs through Vestwell with flexible time off and every other Friday designated as self-care days. Remote work is supported with a $2,000 home office stipend, new MacBook refreshed every two years, $100/month wellness stipend, and $75/month connectivity allowance. The company hosts semi-annual global retreats and maintains a culture of high autonomy with intense focus periods followed by recovery time.