A news wire on how AI agents pay and get paid.
links + original short summaries; content belongs to publishers
48 entries. All categories. JSON: /api/library/payments.json.
BlackRock insight arguing that LLMs and blockchains share a machine-native, token-based foundation and that agentic commerce requires machine-native payment rails. It states that stablecoins and native cryptoassets can serve as machine-native instruments for machine-to-machine payments.
Speech by Federal Reserve Governor Christopher J. Waller at Sibos 2026 in Miami on how AI agents may shape payments. Published on the BIS central bankers' speeches site.
McKinsey's annual global payments report, which sizes the industry at roughly $2.6 trillion in revenue from 3.8 trillion transactions. It reviews growth drivers and the shift toward "invisible" payments.
Internet-Draft defining a payment-method-agnostic HTTP authentication scheme for 402 flows: the server sends WWW-Authenticate: Payment with challenge parameters and the client retries with Authorization: Payment and a credential. Revision 01 is dated 2026-09-09 and is an active draft, not an RFC.
Security analysis of Google's AP2. It finds that signed Checkout and Payment Mandates protect transaction data after signing, while agent interactions before authorization (A2A messages, MCP inputs) stay outside that protection.
Press release announcing the operational launch of the x402 Foundation under the Linux Foundation, with 40 founding members, to steward x402 as an open standard for internet-native payments by AI agents and applications.
Speech by Bank of England Deputy Governor Sarah Breeden at the ECB Sintra Forum on how agentic AI is changing cyber risk, markets and payments. It argues central banks must adapt quickly, strengthen resilience and cooperate globally.
Mastercard press release launching Agent Pay for Machines, a service for continuous, high-velocity agent-to-agent transactions and microtransactions. It lists more than 30 early supporters, including Adyen, Coinbase, Stripe and Tempo.
Meeting summary of a Federal Reserve roundtable (Governors Waller, Barr and Cook) with payments and technology firms, including Visa, Mastercard, Stripe, Coinbase, Google and Skyfire. The discussion covered AI in payments, with a particular focus on agentic commerce.
IMF Note examining how agentic AI may affect authorization, liquidity, settlement, compliance and resilience in payment systems, using an intent, authorization and settlement framework. It highlights the tension between probabilistic AI behavior and the deterministic requirements of payment infrastructure.
Systematization of knowledge on the security of autonomous LLM agents that negotiate, purchase and transact across on-chain and off-chain environments. It covers protocols such as ERC-8004 and AP2.
Research system that adapts HTTP 402-style payment gating to UPI-like real-time fiat workflows, with policy-governed spend control for autonomous agents calling APIs.
Press release, issued at MCP Dev Summit North America, announcing a new x402 Foundation to steward the open x402 protocol for payments over HTTP.
Stripe blog post launching the Machine Payments Protocol (MPP), an open, internet-native standard for agent payments co-authored by Tempo and Stripe.
Visa announcement of a card specification and SDK that enable card-based payments for autonomous agents within Stripe and Tempo's Machine Payments Protocol. It coincided with Tempo's mainnet launch.
Proposes A402, a trust-minimized payment architecture with Atomic Service Channels that bind cryptocurrency payments to service execution and result delivery. It addresses an atomicity gap the authors identify in x402.
eBay-authored paper on runtime behaviors (retries, concurrency, orchestration) that can cause replay and context-binding failures in mandate-based protocols such as AP2 and UCP. It proposes zero-trust runtime verification to mitigate them.
BIS Working Paper 1310 examining how generative AI can help manage cash and liquidity in real-time gross settlement (RTGS) payment systems.
McKinsey QuantumBlack report on how AI agents are changing commerce for consumers and merchants.
Visa press release introducing the Trusted Agent Protocol, developed with Cloudflare, to support secure communication between AI agents and merchants and help merchants tell legitimate agents apart from malicious bots.
Mastercard press release on new developer tools, expanded consulting services and ecosystem collaborations for AI-powered payments, aimed at trusted agentic transaction standards.
Cloudflare announcement of pay per crawl, which lets content owners charge AI crawlers for access using HTTP 402 responses. It is a machine-payable content model at CDN scale.
Whitepaper describing x402, an HTTP-based protocol that uses onchain payments for agents, context retrieval and APIs. It explains why traditional rails fail for autonomous payments and how x402 works.
Official x402 site, describing it as an open standard for internet-native payments that enables agentic payments at scale.
Reference repository for x402, "a payments protocol for the internet. Built on HTTP."
Official repository of the Agent Payments Protocol (AP2), described as "Building a Secure and Interoperable Future for AI-Driven Payments."
Official ACP site describing an Apache-2.0 open standard for programmatic commerce flows between buyers, AI agents and businesses, in which businesses remain merchant of record.
Specification repository for the Agentic Commerce Protocol, an interaction model and open standard for buyers, their AI agents and businesses, currently maintained by OpenAI and Stripe.
Stripe documentation for ACP, described as an open standard created by Stripe, OpenAI and Meta. It covers agentic checkout, cart and feed, and delegated payment and authentication building blocks.
Stripe documentation on accepting agent payments with the Machine Payments Protocol: servers respond with HTTP 402 and payment details, and agents authorize payment and retry to receive the resource and a receipt.
Visa developer documentation for merchants and infrastructure providers. It presents the Trusted Agent Protocol as a verifiable cryptographic standard for recognizing Visa-approved AI agents.
Visa Developer Center product page for Visa Intelligent Commerce, available to acquirer and issuer banks. The full documentation is restricted to authorized users.
BIS Innovation Hub project with the Bank of Canada and the Swiss National Bank that uses agentic AI to model payment behaviour and intraday liquidity in wholesale payment systems.
Documentation for the x402 Bazaar extension. Facilitators can catalog payable HTTP endpoints and MCP tools and expose list and search discovery endpoints, so agents can find x402 resources together with their input/output schemas and prices.
Normative spec for the Bazaar extension. It covers facilitator validation of the discovery info and the optional GET /discovery/resources and /discovery/search APIs, which filter by type, payTo, scheme and network and paginate with offsets or cursors.
Coinbase's hosted Bazaar catalog of x402 resources seen by the CDP Facilitator. It offers a public paginated list, hybrid semantic search with price, network and asset filters, and an MCP interface. The read endpoints need no API key.
Describes how x402scan discovers paid endpoints. It reads OpenAPI first, with per-operation x-payment-info pricing and a declared 402 response, and falls back to a /.well-known/x402 resource list. The live 402 challenge overrides static metadata.
Explorer and registry for x402 that tracks servers, transactions, buyers, merchants and facilitators across chains. It publishes an OpenAPI spec, an RFC 9727 api-catalog and a health endpoint. Most read API calls are paid via x402.
Documentation hub for the Machine Payments Protocol, which standardizes HTTP 402 challenges, credentials and receipts for machine payments across methods including stablecoins, cards and Lightning. It publishes llms.txt, per-page Markdown, an MCP server card and an Agent Skills index.
Explains how an MPP server advertises payment terms ahead of time in an OpenAPI 3.1 document, with paid operations annotated by x-payment-info, while the runtime 402 challenge remains authoritative.
Curated directory of APIs that accept MPP payments, also available as JSON at /api/services with per-endpoint payment intent, method, asset and amount.
Protocol-agnostic directory of HTTP 402 paid APIs (L402, x402, MPP) with health probing, payment verification and semantic search. It exposes a JSON API, RSS, webhooks and an MCP server, and aggregates Bazaar, Satring, l402apps and MPP listings.
MIT-licensed source for 402 Index, including an npm MCP server package, self-serve registration through a probe that validates the 402 challenge, and YAML listings accepted by pull request.
Curated directory of paid APIs that accept L402, x402 (USDC on Base) or MPP. It has a free summary tier and paid bulk export, analytics and reputation, plus /.well-known/l402 and /.well-known/x402 payment descriptors and an agent.json.
Directory of x402-payable APIs rebuilt from the public x402 discovery network. Each service page lists price, networks, method, inputs, an example response and 30-day call statistics. It offers paid featured placement.
Marketplace directory of pay-per-call agent services that sellers price per call, paid over Lightning or USDC via x402. It publishes llms.txt and an OpenAPI description of the directory.
Site for the Universal Commerce Protocol, an open agentic-commerce standard.
Specification and documentation repository for the Universal Commerce Protocol.