Gate for AI Agent: Why Stablecoins Have Become the Native Payment Layer for AI Agents

By 2026, AI agents are undergoing a fundamental shift in roles. They are no longer limited to information retrieval, content generation, and strategic advice, but are beginning to truly take over the execution layer of economic activities—calling paid APIs, executing on-chain transactions, purchasing computing resources, settling data purchases. These actions are being autonomously performed by AI agents without human approval at each step.

As AI agents move from "dialogue" to "execution," a fundamental question arises: who provides the payment capability for these autonomous operations?

Traditional payment systems were not designed for programmatic entities. Bank accounts rely on human identity verification, and payment confirmation requires SMS or biometric authentication. When an AI agent needs to pay $0.05 for a single data API call, even the traditional card payment network cannot process this request—its minimum fee of $0.30 makes the transaction economically unviable.

It is within this structural contradiction that stablecoin payments come into view. The programmability of crypto assets, low-latency settlement, and global liquidity make on-chain infrastructure a natural choice for AI agents’ autonomous financial operations.

AI Agent Payments Have Entered a Scaled Phase

To answer whether AI agents will become the next users of stablecoin payments, we first need to address a prerequisite: do AI agents have genuine payment needs, and how large are they?

Data provides a clear answer. A report jointly published by crypto market maker and investment firm Keyrock, Coinbase, Tempo, and Virtuals Protocol in May 2026 shows that between May 2025 and April 2026, AI agents completed approximately 176 million on-chain transactions across multiple blockchain networks, with total settlements exceeding $73 million. The average payment per transaction was only about $0.31 to $0.48.

Behind these numbers is an accelerating trend. Since 2025, over 17,000 AI agents have been deployed on-chain, with automated activities accounting for about 19% of all on-chain transactions. On Layer 2 networks, roughly 40% of stablecoin transfers are driven by automation systems. Analysts predict that by the end of 2026, this proportion could reach 30%.

More macro-level data also confirms this trend. In Q1 2026, the global stablecoin trading volume reached $28 trillion, with approximately 76% driven by automation systems and bots. Retail transfers declined by 16% during the same period—marking the largest drop on record.

Payments between machines are no longer fringe use cases on blockchain but are becoming the core driver of the entire payment architecture transformation.

Why Stablecoins Are the Default Payment Layer for AI Agents

Traditional payment systems cannot support the payment needs of AI agents, primarily due to a structural mismatch in cost models.

The Keyrock report shows that about 76% of AI agent transactions involve amounts below the $0.30 fixed fee threshold of Visa. On the Base network, a USDC transfer costs about $0.0001, which is only about 0.03% of a $0.31 transaction. Furthermore, 98.6% of AI agent payments are settled in USDC.

This cost difference is not a minor optimization in magnitude but a fundamental reason for structural substitution.

In addition to cost advantages, stablecoins possess key features that make them the default payment layer for AI agents:

Programmability. Stablecoins operate based on smart contracts, allowing payment logic to be encoded and automated. AI agents can trigger payments and complete settlements based on preset conditions without human intervention.

Low-latency settlement. Blockchain confirmation times are measured in seconds, far faster than traditional banking T+1 or T+2 settlement cycles. For AI agents needing real-time market responses, this speed difference is critical.

Global liquidity. Stablecoins are borderless; AI agents can make payments and settlements anywhere with internet access, avoiding complex cross-border payment processes and high fees.

Micro-payment friendliness. The minimum fee thresholds of traditional payment systems make microtransactions economically unfeasible, whereas on-chain stablecoin transfers are naturally suited for high-frequency, small-value machine-to-machine payments.

Based on these features, stablecoins are evolving from "a category of cryptocurrencies" to "the native currency of the AI agent economy." As Keyrock’s report indicates, stablecoins on blockchain are gradually becoming the preferred payment layer for AI agents.

Rapid Formation of Industry Infrastructure

The transition of AI agent payments from concept to reality relies on supporting infrastructure. In the first half of 2026, several key developments marked this field’s move from experimental to large-scale deployment.

Standardization of payment protocols. The x402 protocol, based on the HTTP status code "402 Payment Required," deeply integrates payment capabilities into web HTTP request flows, enabling AI agents, APIs, and various applications to complete transactions simultaneously when initiating service requests. The Linux Foundation officially established the x402 Foundation in May 2026 to promote this standard through open-source efforts, with members including Amazon, Google, Microsoft, Mastercard, Visa, Shopify, and others. This signals that autonomous machine payments are shifting from experimental projects to industry consensus standards.

Mainstream payment institutions enter the scene. Mastercard launched Agent Pay on June 20, 2026, a payment service allowing AI agents to execute instant microtransactions between cards, bank accounts, and stablecoins. The service partners with over 30 organizations, including the Solana Foundation. Visa announced new AI, stablecoin, and token features at the 2026 Visa Payments Forum and established a strategic partnership with OpenAI, enabling AI agents to initiate payments within user-authorized scopes. Visa disclosed that by March 2026, it had processed billions of dollars in stablecoin transactions on VisaNet, with an annualized run rate of about $7 billion.

Blockchain networks actively deploying. Ripple launched the XRPL AI Starter Kit in June 2026, enabling autonomous AI agents to send and receive payments directly on the XRP Ledger, with settlement in 3 to 5 seconds using XRP and RLUSD stablecoins. MetaMask introduced Agent Wallet, allowing AI agents to perform programmable transactions within defined scopes. Circle launched an AI agent wallet called Agent Stack based on USDC.

White paper on AI agent payments released. Interlace, together with multiple ecosystem partners, published a white paper on AI agent payment infrastructure, systematically proposing an eight-layer architecture for Agentic Payment infrastructure, covering agent applications, payment execution, custody and governance, trust and compliance, stablecoin settlement, underlying public chains, user access and liquidity, and causal verification.

The simultaneous advancement of these infrastructures indicates that AI agent payments are no longer just exploratory projects but are part of a structural industry transformation. Payment giants, blockchain networks, wallet providers, and protocol standard organizations are laying the tracks for this shift from different angles.

Gate for AI Agent: The Infrastructure Layer for Native AI Payments

Against this backdrop, the positioning of Gate for AI Agent is particularly clear: it is not just an additional payment tool for AI agents but an upgrade of the entire exchange into an infrastructure layer that AI can natively call.

Launched in March 2026, Gate for AI Agent is the industry’s first platform that, within the same interface and protocol system, connects centralized exchanges, on-chain trading, wallet signing, real-time information, and on-chain data capabilities for AI agents.

In terms of payment capabilities, Gate Pay for AI Agent offers a complete AI-native payment infrastructure. Within user-authorized scopes, AI agents can automatically complete payments, signatures, and result retrieval during service calls, reducing user intervention and enabling complex tasks to be completed seamlessly within a unified process. The system supports networks like Base, Ethereum, and Gate Chain, and stablecoins such as USDC.

The four-layer architecture of Gate for AI Agent—application layer, capability layer, protocol layer, and infrastructure layer—provides comprehensive technical support for autonomous payments by AI agents. Gate CLI and MCP offer protocol layer capabilities, connecting AI agents to crypto services, while AI Skills orchestrate workflows on top of CLI tools. Skills prearrange multiple data sources and logical models into callable strategies, such as decomposing natural language commands like “buy 100 USDT worth of BTC at market price” into steps like quoting, liquidity assessment, risk calculation, and order generation.

Before executing sensitive operations like fund transfers or order placements, the system enforces a secondary confirmation permission mechanism, forming the foundation of fund security. Gate recommends using sub-account isolation—creating dedicated sub-accounts for AI, with exclusive keys—limiting AI operational risks within an isolated environment.

As of June 2026, the Gate platform supports over 4,700 spot tokens and includes more than 49 million DEX tokens. These assets are directly accessible via APIs, transforming into standardized modules that AI agents can invoke. For AI agents, this means that within the Gate for AI Agent ecosystem, the entire process—from market research to trade execution, asset viewing, and settlement—can be completed within a closed loop on the same infrastructure layer.

Conclusion

Returning to the initial question: will AI agents become the next users of stablecoin payments?

Data shows that AI agents have already completed over 176 million on-chain transactions, with settlements exceeding $73 million, and this number is rapidly growing. From a cost perspective, the micro-payment suitability of stablecoins is unmatched by traditional payment systems—98.6% of AI agent payments are settled in USDC, and 76% of transaction amounts are below the fixed fee threshold of traditional cards. From an infrastructure standpoint, leading payment institutions, blockchain networks, and protocol standard organizations are advancing infrastructure for AI agent payments in parallel.

These facts point to a clear conclusion: AI agents are becoming an important user group for stablecoin payments, and this trend has entered a scaled development phase.

Executives from Bridge and Deus X Capital highlighted at Consensus 2026 that large enterprises seeking payment modernization and autonomous AI trading agents are the two main growth drivers for stablecoins. At the World Economic Forum in Davos, Circle’s CEO stated outright that traditional payment systems are “too slow, too expensive, and too cumbersome” for the AI agent world being built.

When hundreds of millions of smart devices need to pay automatically, only blockchain networks based on stablecoins can support such massive transactions—because they are the only financial infrastructure that meets the criteria of instant settlement, ultra-low cost, global reach, and price stability.

Gate for AI Agent’s positioning is precisely to provide the infrastructure layer supporting this trend—fully protocolizing core capabilities of centralized exchanges and on-chain trading, enabling AI to move beyond dialogue to directly participate in the entire process from data analysis and strategy generation to order execution and payment settlement. As AI agents evolve from tools into economic entities, stablecoin payments and the infrastructure represented by Gate for AI Agent are jointly forming the foundational backbone of the next-generation digital economy.