Circle has launched Bridge Kit, a developer toolkit designed to simplify cross-chain transfers, starting with support for CCTP and USDC. According to the company, the Bridge Kit accelerates the transition from prototype to production, whether you’re upgrading an existing integration or building a new application.
Circle used CCTP (Cross-Chain Transfer Protocol) to perform cross-chain moves. This enables secure USDC transfers with 1:1 capital efficiency. However, developers are looking for a faster and easier way to introduce these features into their apps. According to the company, this kit is intended to further speed up CCTP builds.
The company says, “The Bridge Kit is the first in a new suite of app kits designed to make it easy to build all widely used stablecoins. Together, these kits provide a complete framework for on-chain app development, making it easy to integrate core stablecoin functionality such as bridges, swaps, and payments. Stay tuned for more additions this year.”
Bridge Kit has built-in monetization logic
The Bridge Kit starts with USDC support with CCTP V2. This gives developers the foundation for secure, permissionless cross-chain transfers.
It also exposes key CCTP operations as high-level SDK methods, abstracting routine setup steps and standardizing bridge flows. This allows developers to go from setup to production in days instead of weeks.
Bridge Kit also takes the heavy lifting out of cross-chain USDC transfers, allowing developers to integrate it in less than 10 lines of code. This kit configures transfer speeds, RPC endpoints, and blockchain interfaces (Viem and Ethers) to better support your current stack.
According to Circle, the Bridge Kit package comes with detailed instructions, production-ready sample code, and built-in logic to monetize every transfer so developers can earn money from anyone.
The Bridge kit is different from alternatives such as Arcana’s Chain Abstraction SDK or Bitget’s OmniConnect. Alternatives focus on helping developers manage interactions between multiple blockchains or integrate cryptocurrencies into social apps.
While they offer flexibility and broad chain coverage, they do not combine stablecoin issuance, cross-chain transfer infrastructure, and a mature developer ecosystem under one brand.
Meanwhile, Circle has built a cohesive ecosystem around USDC by connecting cross-chain transfer protocols, Bridge Kit SDKs, and liquidity networks. This gives developers the regulatory confidence that comes with being a listed and compliant issuer.
However, its ecosystem is concentrated around USDC, which limits developers who want to move other assets, and its network supports fewer blockchains than more open platforms like Axelar and OmniConnect. Critics further point to its centralized control as a trade-off for the decentralization and flexibility offered by community-driven protocols.
Circle gains support with developers beyond Tether
Circle Internet Group maintains strong momentum in the final quarter of 2025 with rapid growth in USD Coin circulation and expansion of developer infrastructure. The supply of USDC has increased to nearly $76 billion, issued across 28 different blockchains.
Stablecoins by market capitalization. Source: Rwa.xyz
It remains the second largest stablecoin on the market, accounting for around 24-26% share of the total market. The broader stablecoin sector is worth $296 billion, with Tether (USDT) still accounting for about 60-65% of the market.
Despite the differences, USDC continues to grow steadily, supported by a reputation for transparency, full reserve backing, and strong regulatory compliance, making it a preferred choice for financial institutions and regulated platforms.
Analysts say USDT benefits from deeper liquidity and the advantage of an established exchange, while Circle’s USDC is gaining ground among developers and businesses looking for reliability and legal clarity. Overall, Circle’s USDC stands out as the most trusted and fastest growing regulated stablecoin.
Investment firm William Blair & Co. recently began reporting Circle’s “outperform” rating and forecasts revenue of about $2.7 billion in 2025, growing to more than $4 billion by 2027.
