https://store-images.s-microsoft.com/image/apps.42531.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.098b3226-b384-4f8b-a96c-d3e4a2df997b

AgentRails — AI Agent Payment Infrastructure for x402

by AgentRails

Build, govern, and pay AI agents on Microsoft 365 with x402 autonomous payments

The missing commerce layer for AI agents


AgentRails is enterprise AI agent infrastructure that gives your agents autonomous payment capabilities via the x402 protocol. Build with Copilot Studio, govern with policies and audit trails, pay with USDC — from development to production, guardrails included.


The x402 protocol replaces API keys with HTTP-native payments. When an agent calls a protected API, the server returns 402 Payment Required with the price. The agent pays instantly in USDC and gets access — no signup, no credentials, no subscription tiers.


Why AgentRails?


  • 5 SDK integrations — LangChain, CrewAI, Semantic Kernel, Microsoft Agent Framework, and Copilot Studio
  • Enterprise governance — Per-agent spending limits, approval workflows, kill switches, and full audit trails
  • Microsoft 365 native — Copilot Studio plugins let finance teams query x402 revenue and manage agents in Microsoft Teams
  • Instant USDC settlement — Payments settle in milliseconds on-chain with cryptographic proof
  • Zero credential management — No API keys to provision, rotate, or leak. Agents pay per-request.
  • Open source foundation — Core protocol implementation on GitHub. Enterprise features layered on top.

    • How it works


    1. Agent calls any API — No signup required. Standard HTTP request. Server returns 402 with the price.
    2. Agent pays instantly — SDK checks budget limits, signs a USDC payment authorization, and retries in one round trip.
    3. Data returned, settled on-chain — API delivers the response. Payment settles with cryptographic proof. Agent moves on.

      4. Built on trusted infrastructure


      AgentRails integrates with Microsoft Power Platform, Copilot Studio, Circle (USDC), Coinbase (Base network), and the x402 open protocol. Deploy on your own infrastructure or use our hosted facilitator.


      Pricing


      • Sandbox — Free. Full API access on testnet with test USDC.
      • Pay-as-you-go — 0.5% per transaction on mainnet. No monthly minimum.
      • Pro — $49/month. Unlimited transactions, 0% fees, priority support.
      • Enterprise — $2,500 one-time. Full source code, policy engine, admin dashboard, Copilot Studio plugins.

        • At a glance

        https://store-images.s-microsoft.com/image/apps.29578.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.b4f5beea-41c7-4f5f-85c6-8e18be0b8821
        https://store-images.s-microsoft.com/image/apps.40081.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.2c763260-50f3-41e1-b46c-df6fab8b7689
        https://store-images.s-microsoft.com/image/apps.42217.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.732b02c6-daff-40e1-b5c4-afee0066dda8
        https://store-images.s-microsoft.com/image/apps.45611.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.9fbb8af3-bb16-40c6-aa33-12360356ea4a
        https://store-images.s-microsoft.com/image/apps.61261.a1a02108-d137-4884-a016-5a5e03f917d6.e5df4353-106e-4d55-af88-46ac4e3935df.9dc4730c-8603-402a-b17d-301bb527551e