Solana Controls 49% of AI Agent-to-Agent Payments on the x402 Protocol

SolanaFloor data shows that Solana accounts for approximately 49% of all x402 agent-to-agent transaction market share as of the week ending February 9, 2026, establishing the network as the dominant chain for AI agent payments despite a volatile share trajectory that saw it near zero percent as recently as early November 2025.

What x402 Is and Why It Matters

x402 is an emerging payments protocol designed specifically for machine-to-machine and agent-to-agent transactions, where autonomous AI systems pay for compute resources, API access, data feeds, and other services without human intervention. The protocol sits at the intersection of two of the most active development areas in crypto right now: AI agent infrastructure and on-chain micropayments.

The chain that captures the majority of x402 transaction volume is, by extension, capturing a disproportionate share of the infrastructure layer for autonomous AI economic activity. That is not a speculative future use case. The SolanaFloor weekly chart shows real transaction market share data across eleven chains, and Solana’s position at the top of that dataset reflects activity that is already happening.

The Chart’s Story

The x402 Transactions Market Share by Chain chart from SolanaFloor covers late September 2025 through early February 2026, and the trajectory of Solana’s share across that period is the most notable feature of the data.

In late September, Solana held roughly 20% share before climbing to approximately 38% in the first week of October. Then it collapsed. Through mid-October to mid-November, Solana’s share dropped to near zero while Base dominated the market at close to 100%. The reasons for that collapse are not annotated on the chart, but the move was sharp and total.

The recovery began around November 17th and accelerated significantly through December. By late December and early January, Solana had climbed back past 60% and at one point approached 80% share in the first week of January 2026. A brief dip followed before a spike to approximately 90% around February 2nd, after which share settled back toward the current 49% reading.

Base, shown in blue, has been the consistent second-place competitor throughout the dataset, with Hyperevm appearing more recently in the upper portion of the stack. Polygon, BNB, Celo, Optimism, Arbitrum, and several others are visible but represent fractional shares across most of the charted period.

Why Solana Is Winning This Category

The characteristics that make Solana the preferred chain for agent-to-agent payments are the same ones that define its broader value proposition: transaction speeds measured in milliseconds, fees measured in fractions of a cent, and a network architecture designed for high throughput without congestion-driven fee spikes.

AI agents executing micropayments at machine speed require a network where the cost and latency of each transaction are negligible. A payment for a single API call that costs more in gas than the API itself is worthless as infrastructure. Solana’s fee structure makes that use case economically viable at scale in a way that most EVM chains cannot currently match for high-frequency, low-value transactions.

The volatile share trajectory visible on the chart, particularly the near-zero period in October through November, suggests the x402 ecosystem is still early and subject to significant shifts as competing implementations and chain-specific developer activity fluctuates. Solana’s recovery to dominance after the October collapse is a more meaningful signal than any single week’s reading, but the current 49% share is a step down from peak levels that is worth monitoring.

The Connection to Tether’s Agentic Vision

Earlier this week, Tether CEO Paolo Ardoino outlined a framework in which AI agents become the primary users of stablecoin infrastructure, requiring permissionless, 24/7 payment rails that traditional banks cannot provide. The x402 market share data is a concrete, early-stage data point consistent with that thesis playing out on Solana specifically.

If the agent-to-agent payment category scales as AI agent deployment accelerates through 2026, the chain holding dominant share in x402 transactions is positioned to benefit structurally from that growth. Solana currently holds that position. Whether it retains it depends on development activity, fee competition, and whether the October-style share collapses prove to be temporary disruptions or early signals of a more contested market.

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