Agent payments and commerce: 17 companies ranked

Companies selling wallets, payments, checkout and deal rails that let AI agents buy and sell, in SalesBook agentic-sector rank order. Every company has a profile with dated public sources and a live check of its agent interfaces (MCP, llms.txt). Ranks use the published SalesBook method; tell us who is missing.

• Crossmint#46Stablecoin and wallet APIs for enterprises, including agent wallets and agentic checkout.
  MCP connector: yesllms.txt: yes
• Paid#53Billing and monetization infrastructure for companies that sell AI agents, including results-based pricing.
  MCP connector: nollms.txt: no
• Orthogonal#54Single account, key and balance giving AI agents pay-per-use access to 60+ API providers via API, MCP or CLI, incl. x402 payments.
  MCP connector: yesllms.txt: yes
• Catena Labs#55Banking and governance platform for AI agents (accounts, payments, treasury) and the open-source Agent Commerce Kit.
  MCP connector: nollms.txt: yes
• Kite#58Payments and identity layer for AI agents (Agent Passport, agent app store) with stablecoin settlement.
  MCP connector: nollms.txt: yes
• Basis Theory#84Tokenization vault and payment orchestration that lets merchants and agentic-commerce platforms store and use card data across processors.
  MCP connector: nollms.txt: yes
• Channel3#88Product catalog API for AI shopping: search over 100M+ products, commissions and checkout for developers, brands and enterprises.
  MCP connector: yesllms.txt: yes
• Skyfire#92Identity and payment credentials for AI agents so they can access sites and pay across the open web.
  MCP connector: yesllms.txt: yes
• Payman AI#94AI agents that run banking transactions such as payments and transfers for banks and credit unions, with audit trails.
  MCP connector: nollms.txt: yes
• firmly#96Agentic commerce platform (firmly Connect) that connects merchants' catalogs and native checkout to AI agents and other channels.
  MCP connector: nollms.txt: no
• Natural#104Agentic payments platform for money movement between agents, businesses and consumers, starting with B2B use cases.
  MCP connector: yesllms.txt: yes
• Henry Labs#107SDK and API for agentic commerce: product data, multi-merchant universal cart and embedded checkout for AI builders and publishers.
  MCP connector: yesllms.txt: yes
• nekuda#108Tools for merchants to make their websites usable by AI agents via WebMCP, plus agentic payment infrastructure.
  MCP connector: nollms.txt: no
• Rye#110Universal checkout API that lets AI agents and apps get price, tax and shipping and buy products from online merchants.
  MCP connector: nollms.txt: no
• Cape Partners#117Technology M&A advisory firm that runs an agent-to-agent exchange for brokering software deal introductions.
  MCP connector: yesllms.txt: yes
• BuyingMesh#118Procurement infrastructure for AI agents and buying teams: structured supply search, quotes, sandbox orders and fulfillment status.
  MCP connector: yesllms.txt: yes
• Focxle#127Negotiation rooms, locked agreements and payment checks for B2B deals between AI agents.
  MCP connector: yesllms.txt: yes