Key Highlights
- Openmind and Circle collaborate to accelerate the development of the x402 protocol.
- The partnership focuses on adopting and promoting the open-source x402 protocol for automated microtransactions.
- The initiative works for enabling the future economy of autonomous AI agents and automated services.
Circle, the cryptocurrency payment firm, has partnered with decentralized AI robotics company Openmind to accelerate the development of the x402 protocol, an open standard designed to enable autonomous software agents to conduct microtransactions across the internet.
The collaboration aims to create a unified M2M payments architecture capable of supporting the projected surge in “agentic payments,” where AI agents autonomously pay for content, API usage, model inference, and research tasks at extremely high frequency.
The move, announced on Tuesday in an X post, centers on addressing the infrastructure required for the growing economy of autonomous software agents.
Moreover, the companies aim to develop foundational, interoperable infrastructure needed for the emerging autonomous agent economy and AI services.
Key changes to protocol
A core part of the integration is Circle’s proposal to adjust how the x402 specification treats payment validation. Today, sellers rely on a /verify call to confirm that a buyer has authorized a payment. Circle argues that this creates a security gap if a malicious buyer tries to withdraw or double-spend funds between verification and settlement.
Because Gateway’s off-chain /settle function atomically commits funds and cannot be reversed, Circle is asking the community to consider removing /verify from the x402 specification entirely and treating /settle as the authoritative confirmation.
Circle is also seeking feedback on whether the existing EIP-3009 “exact payment” scheme should remain the default for x402. While technically compatible, the exact scheme was never designed for multi-chain workflows or ultra-high-frequency payments.
Circle is evaluating a new “deferred” or “batched” x402 payment type tailored for Gateway’s cross-chain, high-volume architecture. This update would allow AI agents to execute millions of tiny payments without having to interact with on-chain settlement for each request.
Focus on the x402 protocol
They are leading a joint effort to implement the practical use of the x402 protocol, a specification that prescribes how autonomous software agents should execute microtransactions.
The standard enables machines to pay for access to digital services, such as APIs or data streams, with a small digital payment in exchange for the service desired, thus enabling a pay-per-use model to replace subscriptions and API keys, fostering native commerce for the internet of machines.
Roles of Openmind and Circle
Openmind is focused on building decentralized infrastructure for intelligence and thus brings a deep perspective of autonomous agent needs into ensuring that the standard is robust and practical for complex AI workflows.
Circle brings expertise in stablecoin technology to ensure a sound and compliant mechanism in value transfer, likely using a digital currency such as USDC to facilitate near-instant and low-cost global settlements between automated parties.
The demand for M2M payment standards has grown rapidly with the advancement of artificial intelligence and decentralized networks. Historically, automated payments relied on traditional banking rails that were too slow, too expensive, and lacked the granularity required by the microtransactions characteristic of an AI economy.
Need for M2M standards and future implications
The X402 protocol itself originated as an open-source contribution, primarily incubated by teams at Coinbase that recognized the need for a universally accepted method of API monetization. This specification extends HTTP status codes by defining when a given machine request requires payment.
Standardizing the payment method greatly lowers the barrier for developers to create and monetize autonomous services. It could enable a new class of “money-aware” AI agents capable of navigating and paying for services seamlessly on the open internet independently of human interference.
Additionally, the wide adoption of the X402 protocol is important for ensuring that the global proliferation of autonomous agents will be underpinned by a stable and shared mechanism for efficient value exchange.
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