Agentic Commerce

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the foundation everything is built on

Standards & Protocols

12 companies in this category

Overview

Standards & Protocols are the foundational specifications that everything else in the agentic commerce ecosystem is built upon. x402 revives HTTP 402 "Payment Required" for internet-native micropayments.

ERC-8004 defines on-chain agent identity and reputation. MCP by Anthropic standardizes how agents connect to external tools. A2A by Google (now Linux Foundation) enables cross-organizational agent collaboration.

ACP by OpenAI/Stripe defines agent shopping flows. AP2 by Google secures agent payments with cryptographic mandates. UCP standardizes agent-driven product discovery.

ERC-4337 provides account abstraction for programmable wallets. MPP (Machine Payments Protocol) by Stripe enables internet-native agent-to-agent payments.

These standards are the invisible infrastructure that determines interoperability — which agents can talk to which services, and how payments flow between them.

All Companies (12)

x402

x402

Open internet-native payment protocol by Coinbase that revives HTTP 402 "Payment Required" to enable pay-per-use USDC micropayments for AI agents with sub-2-second settlement.

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ERC-8004

ERC-8004

Ethereum standard for trustless AI agent identity, providing on-chain registries for agent identity, reputation scoring, and validation -- the trust layer enabling open agent economies.

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MCP

MCP

Open protocol by Anthropic that provides a standardized way for AI agents and LLMs to connect with external tools, data sources, and payment APIs, enabling agentic commerce integrations (adopted by Worldpay, Visa, Marqeta).

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A2A

A2A

Open protocol originally developed by Google (now under the Linux Foundation) that enables AI agents to discover each other, exchange messages, and collaborate across organizational boundaries.

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ACP

ACP

Open standard co-developed by OpenAI and Stripe that defines how AI agents search products, build carts, and complete purchases on behalf of users (powers ChatGPT's Instant Checkout).

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AP2

AP2

Google-led open protocol for secure AI agent payments using cryptographically-signed "mandates" that verify user intent; supported by 60+ organizations including Mastercard, PayPal, and Adyen.

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UCP

UCP

Google-led open standard co-developed with Shopify, Etsy, Wayfair, Target, Walmart, and 20+ others enabling agent-driven discovery, buying, and post-purchase support across the entire shopping journey.

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AXTP

AXTP

Open protocol for structured experience exchange between AI agents, with a five-factor trust framework and tamper-evident audit trails so agents can deposit and retrieve learnings before executing tasks.

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ERC-4337

ERC-4337

Ethereum account abstraction standard with 40M+ smart accounts deployed, enabling programmable wallet logic for AI agents to execute transactions via automated scripts and policies.

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lobster.cash

lobster.cash

Open-source payment standard for AI agents (backed by Visa, Circle, Solana) that issues virtual cards via Visa Intelligent Commerce, enabling agents to pay at any browser checkout.

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EIP-8183

EIP-8183

Ethereum standard for AI agent authorization that defines how externally owned accounts delegate scoped, revocable permissions to autonomous agents for on-chain actions.

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MPP

MPP

Stripe's Machine Payments Protocol (MPP) -- an open standard for internet-native agent payments. Enables AI agents to transact programmatically with businesses and each other, supporting microtransactions and recurring payments without navigating human checkout flows.

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Explore Other Categories

User Interfaces

6 companies — where humans interact with agents

Discovery

10 companies — finding products & services

Payment Processors

30 companies — processing transactions

Identity & Trust

15 companies — who you are & can you be trusted

Agent Networks

5 companies — how agents connect & collaborate

Crypto Commerce

13 companies — buying & selling with crypto

Agent Frameworks & Tooling

36 companies — how agents are built

Payment Infrastructure

30 companies — rails for moving money

Stablecoins

3 companies — the money layer

Wallets & Tooling

13 companies — managing keys & agent wallets

Hosting / Cloud / Compute

19 companies — where agents run

Proprietary Models

6 companies — closed-source AI brains

Open Source Models

8 companies — self-hostable AI brains

Blockchains

19 companies — settlement & consensus

Agent Harness

12 companies — the agents themselves