Circle announced that its Agent Marketplace now supports services running on Arc, a blockchain ecosystem focused on enabling AI-powered applications and agent networks. The integration gives autonomous AI agents access to live web search, streaming market data, and people and company intelligence, with every service priced per call in USDC, Circle's US dollar-backed stablecoin.

With the introduction of these services on Arc, Circle is continuing its push into the agentic economy. The upgrade broadens AI agents' access to real-world data and tools and enables on-chain payments in USDC. It also strengthens Arc's position in the emerging agentic economy and advances the role of stablecoins as a payments layer for autonomous systems.

As observed across the wider crypto and AI space, developers are creating autonomous agents that can compile data, make choices, and even act on their own rather than relying on traditional payment infrastructure.

Circle Expands Agent Services on Arc

The marketplace provides agents with tools they can actively use rather than static datasets to work through. Services include live web search, real-time information, people intelligence, company intelligence, lead enrichment, and more. According to Circle, the marketplace is built around a practical need: services that agents can actually use.

In a post on X shared on September 25, 2026, Circle wrote:

"The agentic economy needs services agents can actually use. Circle Agent Marketplace now supports services on Arc, helping agents search the live web, access real-time market data, enrich leads with people and company intelligence, and more. Pay per call in USDC. Explore… pic.twitter.com/hkvkYUKLPi"

— Circle (@circle), September 25, 2026, via X

The launch responds to a growing problem in the agentic economy. Many AI agents lack access to reliable services that can deliver the latest data or perform custom tasks. By linking these services together in a marketplace format, developers can let agents obtain information on demand and pay as they use it.

USDC Becomes the Payment Layer for AI Agents

USDC serves as the native payment method for the integration. Agents pay for services with Circle's stablecoin on a per-call basis, without subscriptions or traditional payment methods, establishing a programmable payment model that matches autonomous systems. Each call is billed individually, allowing agents to access tools on demand and letting developers avoid fixed subscription costs. Because USDC is designed to track the value of the US dollar, agents and service providers transact in a stable unit of account for each automated call.

The model offers several benefits for AI agents. All costs can be logged at the transaction level, settlements are processed on-chain, and services can be consumed automatically without human involvement. Taken together, these features tie each service request to a payment and an on-chain record, a flow oriented toward machine-to-machine activity rather than human account holders.

The development also supports Circle's plans to move USDC beyond basic trading and transfers. The stablecoin has been exploring avenues such as decentralized finance, tokenization of assets, and cross-border transactions, and now extends into agent-driven commerce.

The Role of USDC in Agent-to-Service Transactions

As AI agents advance, they are increasingly turning to external services for assistance. Many agent workflows demand fresh information rather than the static knowledge contained in their training data. Agents responsible for monitoring markets need up-to-date prices, sales agents need enriched data on people and companies, and research agents require access to the current content of the web.

With per-call pricing, agents consume only the resources they require, avoiding fixed operating costs. Under this usage-based structure, costs scale with actual consumption rather than fixed commitments.

The concept of an agentic economy, in which autonomous AI systems pay for and consume services on their own, has gained significant traction across the crypto sector over the past year. Developers are increasingly exploring ways to combine blockchain infrastructure with autonomous AI systems capable of completing complex tasks independently. With the Arc integration, Circle places USDC at the center of these agent-to-service interactions.

Additional details on the Arc integration are available on Circle's Agent Marketplace page.

Source: Crypto Ninjas