Agent Payments Python Packages

ddg-agent-services-mcp

Pay-per-call x402 gateway for AI agents — MCP server + OpenAI-compatible API for agent tools, market data, RPC, and MCP security audits. Pay in USDC on Base, no account.

inferrail

Self-hosted OpenAI/Anthropic-compatible gateway: give each AI agent run a dollar budget, enforced before the provider, with a payload-free per-run cost record.

aifinpay-agent

Unified agent-economy SDK for autonomous AI agents — chain-opaque AiFinPayAgent surface (call/balance/verify) over Polygon and Solana execution environments. Non-custodial, x402-native.

keel-verifier

Independent verifier for signed AI audit exports and Permit-spec evidence

agents-u-cash

Non-custodial HTTP-402 payments for AI agents: JS + Python SDKs, MCP server, and API docs for agents.u.cash

twzrd-receipt-verifier

Offline verifier for TWZRD receipts: AO-Receipt V7 (earlier V5/V6 still verify) and genesis cNFT receipts. npm + PyPI.

envarpay

Get your agents paid. Open-source MCP + x402 payment SDK and CLI for AI agents.

agentpay-x402

AgentPay - The economic-intelligence layer for AI agents — an x402 gateway that prices, caps, and receipts agent data spend. 17 free tools + verified_route, the buyer-side x402 trust oracle. USDC on Base or Stellar.

paybond-kit

Python SDK for agent spend governance around paid tool calls across MCP, LangGraph, OpenAI, Claude, and Gemini: spend authorization, evidence receipts, refunds, disputes, and settlement.

a2a-greenhelix-sdk

Agent-to-agent payments, escrow and formal verification services

ap2-iso20022

Bridge AP2 / x402 agent-payment mandates into wire-valid ISO 20022 pain.001 / pacs.008 records, with guardrails. MCP server.

aifinpay-gate

Accept AIFP-1 payments from AI agents in a Python API — ASGI (FastAPI, Starlette) and WSGI (Flask, Django) middleware. Port of @aifinpay/gate.

x402lint

A conformance linter for the x402 agent-payments protocol — check an endpoint 402 challenge, decode X-PAYMENT blobs

agent402-langchain

agent402.tools: 500+ pay-per-call tools, metered models and finished reports for AI agents, paid per call in USDC over x402 and MPP or by card. Open source, self-hostable, MCP-native. The applied layer of agentic finance.

ecommerce-ai-mcp

🔌 Exposes ecommerce-ai-mcp tools over MCP (MEOK AI Labs).

rustchain-mcp

AI-agent tools for the RustChain ecosystem: the agentic-AI-native blockchain RustChain (Proof of Antiquity / hardware authenticity), the BoTTube agent-video platform, and the Beacon agent-identity protocol. Query chain state, agent identity, and media provenance (AVAP). RTC rewards optional.

k402-mcp

MCP server for k402 agent-payable APIs on Kaspa — text tools, chain data, GPU inference, covenants-as-a-service, and RISC Zero zk attestation, paid per call in KAS/BTC/LTC/DOGE/BCH/DASH/ETH/USDC — no account or API key

stripe-billing-mcp

🔌 Exposes stripe billing tools over MCP (MEOK AI Labs); see the README for the tool list.

k402

k402 agent-payable APIs on Kaspa no account or API key

verantis-mcp

MCP tool for Verantis — the verified directory for machine payments (x402 & MPP). Check services and wallets before your agent pays.

meok-stripe-acp-checkout-mcp

🔌 Exposes Stripe ACP Checkout over MCP — ChatGPT shopping bridge + AP2 mandate crosswalk + PSD2 SCA. MIT. By MEOK AI Labs.

vaaya

Paid APIs and supported tokenized shares for agents, funded with prepaid balance. Instinct Checkout guidance: https://vaaya.ai/llms.txt

solsigs-mcp

SolSigs: x402-paid Solana data APIs, MCP tools, and ProofGuard receipts for AI agent payments

meok-ap2-mandate-mcp

🔌 Exposes Google AP2 v0.2.0 Mandate over MCP — signed user-side spend authorisation + PSD2 SCA crosswalk. MIT. By MEOK AI Labs.