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InFlow — agentic MPP (Machine Payments Protocol) / x402 payments…

@inflowpayai

Repository

About InFlow — agentic MPP (Machine Payments Protocol) / x402 payments…

A wallet for your agents to onboard and pay. Agentic MPP / x402 payments from your machine - CLI + MCP server.

#cli#mcp#payments#onboarding#wallet#mpp#ai-agents#stablecoins#http-402#mcp-server#agent-skills#x402#agentic-commerce#agentic-payments

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "inflow": {
      "command": "npx",
      "args": [
        "-y",
        "@inflowpayai/inflow",
        "--mcp"
      ]
    }
  }
}

Tools

19

Authenticate with InFlow

Log out from InFlow

Check authentication status

List the authenticated user's balances

List the authenticated user's configured deposit addresses

Detect a URL's payment protocol(s) and show MPP and x402 challenges together. Read-only probe - no auth, no payment. Read `detected` to choose a pay rail (MPP wins when both are present).

Best-effort cancel of an MPP approval.

Decode a raw WWW-Authenticate: Payment header, or a base64url credential / receipt.

Show the seller's MPP challenge(s) for a URL. Read-only probe - no auth, no payment.

Pay an MPP-protected resource and return the seller response.

Poll the buyer-side state of an in-flight MPP transaction.

List the methods the buyer can pay with - by intent, settlement rail, and currency.

Retrieve the current authenticated user

Best-effort cancel of an x402 approval.

Decode a raw PAYMENT-REQUIRED header value.

Show the seller's PAYMENT-REQUIRED accepts for a URL. Read-only probe - no auth, no payment.

Pay an x402-protected resource and return the seller response.

Poll the signing state of an in-flight x402 transaction.

List the buyer-side capability cache (scheme x network).

Overview

What is InFlow?

InFlow is an agent-native and human-accessible command-line entry point for performing payments via the Machine Payments Protocol (MPP) and x402. It targets both automated agents (e.g., MCP-integrated assistants) and humans using the raw CLI.

How to use InFlow?

Install globally with npm install -g @inflowpayai/inflow or run directly with npx @inflowpayai/inflow. For agents, add the agentic-payments skill via npx skills add inflowpayai/inflow-cli or install the bundled plugin in hosts like Claude Code, Cursor, or Codex. The default MCP entry runs npx -y @inflowpayai/inflow --mcp.

Key features of InFlow

  • Agentic and human-accessible via CLI or MCP assistants.
  • Supports MPP (Machine Payments Protocol) and x402 payments.
  • Provides command groups: auth, x402, mpp, user, balances, depositAddresses.
  • Global flags and --format agent rendering.
  • Ships as a skill and bundled MCP server plugin.
  • Published as npm package @inflowpayai/inflow.

Use cases of InFlow

  • An agent autonomously makes micropayments using MPP or x402.
  • A human initiates payments through an MCP-integrated assistant.
  • A developer explores payment commands via the raw CLI.
  • Integrating payment capabilities into agent hosts (Claude Code, Cursor, Codex).
  • Using the headless @inflowpayai/inflow-core client in custom scripts.

FAQ from InFlow

What is InFlow and what does it do?

InFlow is a command-line and MCP‑integrated tool for making agentic payments via the Machine Payments Protocol (MPP) and x402. It is built for both automated agents and human users.

How do I install InFlow?

Install the binary globally with npm install -g @inflowpayai/inflow or run with npx @inflowpayai/inflow. For agents, add the skill or plugin as described in the README.

What are the runtime requirements for InFlow?

Node.js >= 22 is required. The project is a pnpm + Turborepo monorepo.

How can I use InFlow with agents?

Add the agentic-payments skill via npx skills add inflowpayai/inflow-cli, or install the plugin in Claude Code, Cursor, or Codex (the repo’s plugin files are auto-discovered). The MCP server is bundled and runs inflow --mcp.

What is the license for InFlow?

InFlow is released under the MIT License.

Frequently asked questions

What is InFlow and what does it do?

InFlow is a command-line and MCP‑integrated tool for making agentic payments via the Machine Payments Protocol (MPP) and x402. It is built for both automated agents and human users.

How do I install InFlow?

Install the binary globally with `npm install -g @inflowpayai/inflow` or run with `npx @inflowpayai/inflow`. For agents, add the skill or plugin as described in the README.

What are the runtime requirements for InFlow?

Node.js >= 22 is required. The project is a pnpm + Turborepo monorepo.

How can I use InFlow with agents?

Add the `agentic-payments` skill via `npx skills add inflowpayai/inflow-cli`, or install the plugin in Claude Code, Cursor, or Codex (the repo’s plugin files are auto-discovered). The MCP server is bundled and runs `inflow --mcp`.

What is the license for InFlow?

InFlow is released under the MIT License.

Comments

Basic information

Category

Developer Tools

Transports

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Author

inflowpayai

Submitted by

Nas Kavian

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