x402
x402 is an open standard for paying over the web with stablecoins. A website or API can ask for payment inside a normal HTTP request, and a person or an AI agent can settle it in one step. Coinbase and Cloudflare started the project and moved it to a foundation under the Linux Foundation in 2026, with card networks, banks and cloud providers among the members.
The emerging open standard for machine-native web payments: permissionless, neutral-governed infrastructure with serious backers, carrying mostly fiat-pegged money today.
M69 Score
Scored against the Money2069 Manifesto — see methodology. Higher = more aligned.
Detailed Rating Breakdown
Issuance Model3x2.0
x402 issues no money of its own; it moves existing tokens. Settlement today is dominated by fiat-backed stablecoins (mostly USDC), so the money it carries scores low on M69 issuance criteria.
Spending Power Stability2x2.0
No stability mechanism of its own; inherits the properties of whatever asset settles the payment, which in practice means a USD peg.
Fiat Independence & Interoperability2x3.0
Asset-agnostic and chain-agnostic by design, which is real optionality, but current volume is fiat-stablecoin denominated. Strong marks on FI-08: it is exactly an open standard for cross-system payment interoperability.
Traction2x4.0
Roughly 69,000 active agents, 165 million transactions and about $50M cumulative volume by April 2026; 22 launch members including Visa, Mastercard, Amex, Google, Microsoft, AWS and Stripe. Young (2025 launch), and volume is still small in absolute terms.
Sovereignty4.0
Open-source spec, permissionless to implement, self-hostable facilitators, no protocol-level censorship point. Practical flows still concentrate on Coinbase-run infrastructure and Base.
Governance3.0
Moved from a single company to a neutral foundation under the Linux Foundation in April 2026. Governance is young and member-driven rather than user-driven.
Resilience3.0
Simple, well-documented spec that others can re-implement; no crisis history yet. Scores well on AI-agent readiness, which is the point of the design.
Inclusivity4.0
No KYC at the protocol layer, no minimum, near-zero fees on supported chains; machines and humans transact under the same rules. Access depends on holding stablecoins in the first place.