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Seamless online crypto payments for agentic commerce on Algorand

Powering internet-native payments for AI agents with the x402 standard.

What is x402

x402 is an emerging payments standard developed by the Coinbase Development Platform that leverages the HTTP 402 'Payment Required' status code to enable autonomous AI agent payments over blockchain rails. 

x402 enables micropayments at scale and supports use cases such as pay-per-API access, on-demand compute, and access to premium data and content.

Learn more about x402

Why x402 and Algorand

x402 traffic is high frequency, with small payment amounts and synchronous request-response flows. The underlying settlement layer needs to be fast, reliable, and low-cost.

Algorand is particularly well-suited as the settlement layer for x402, enabling internet-native payment flows to operate at scale.

  • Low transaction fees make micropayments and pay-per-use pricing economically viable.

  • Predictable performance provides consistent fees and confirmation times under load, allowing agents to operate without congestion-aware logic.

  • Algorand composability (smart contracts) on x402 operational logic provides an advantage for agentic commerce, by enabling programmable pricing, authorization and usage rules.

  • Instant and deterministic finality supports real-time HTTP request flows without confirmation delays.

  • Stablecoin support enables predictable pricing for APIs, data, and services.

  • Zero downtime since launch and 10,000 TPS ensure instant payment, execution and settlement.

  • Native atomic transaction grouping allows payments, authorization, and usage logic to settle together without intermediate states.

Key use cases enabled by x402

What does agentic commerce look like in action? Here are a few examples:

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Micropayments

Real-time, low-fee processing that makes high-volume, fractional-cent pricing economically viable.

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Agentic payments

Autonomous software agents can initiate, negotiate, and settle transactions programmatically, enabling commerce between intelligent systems without human intervention.

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Pay-per-API call

Replace API keys, subscription tiers, and quota management with programmable payment per request.

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Machine-to-machine payments (M2M)

High-velocity payments between automated systems (e.g., IOT), enabling devices and services to independently exchange value.

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Pay-as-you-go access

Autonomous agents can unlock metered access to premium content, media, data, or services, billed per use instead of fixed subscriptions.

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Subscriptions and renewals

Autonomous subscription payment renewals executed by agents on behalf of users.

Are you ready to power the future of autonomous commerce?

The infrastructure for agentic commerce is here. Whether you plan to integrate the standard into your existing ecosystem or build a new agent-driven application from the ground up, Algorand provides the speed, low cost, and trust required for x402 to thrive.

Explore how agentic commerce can transform user experience and streamline operations.

Partner with us for agentic commerce

Start building autonomous, pay-per-use systems today.

Start building with x402 on Algorand

Ecosystem

The following projects and platforms form the backbone of the x402 ecosystem, providing the essential links between autonomous agents and the Algorand blockchain.

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X402scan

Explorer for the x402 ecosystem, tracking resource servers, facilitators, and activity across networks.

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x402.org

Homepage for x402, with documentation and links to the core standard, implementations, and community resources.

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MCP

MCP (Model Context Protocol) is one of the three main transports of the x402 standard and protocol. By combining MCP with x402, AI agents can access paid MCP tools and resources and use “pay via MCP” payment facilities whenever they call those tools.

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A2A

Developed by Google, the A2A protocol serves as a key transport layer for the x402 standard. By utilizing the x402 extension, A2A provides the secure communication rails necessary for agents to negotiate and execute transactions autonomously. This integration is essential for accessing payment-protected agent capabilities and specialized "agentic" skill sets.

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AP2

An extension of the A2A protocol, Google’s AP2 focuses on the trust and verifiability layer of agent commerce, providing the security framework for interoperable payments across developers, merchants, and financial institutions. Algorand’s integration brings high-performance settlement to the AP2-x402 integration, allowing autonomous commerce to scale without the delays of traditional payment rails.

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GoPlausible

Reference implementation and extra tooling for x402 on Algorand, including participation in AVM-aligned spec, building SDK packages, full collection of examples in Typescript and Python, AP2-x402 integration extension for A2A, Algorand-dedicated x402 facilitator with full Bazaar integration, and a live demo playground.

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Akita Community

Akita is one of the most active and innovative communities on Algorand. The Akita wallet (based on Algorand ARC 58) provides a full on-chain, plugin-based agentic payment method that can deliver x402 payment means through smart wallets.

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UltraVioletDAO

UltravioletDAO is one of the most active Web 3.0 DAO communities in Latin America, and they have integrated Algorand x402 into their services (facilitator and SDKs).

Experience x402 in action

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