"Samsung Pay" matching MCP servers:

Enables AI agents to discover and pay for MCP tools on a sub-cent, pay-per-call basis using x402 and Algorand USDC settlements.

MCP server for l402-kit — enables AI agents (Claude, Cursor, etc.) to autonomously pay Bitcoin Lightning-protected APIs. Tools: l402_fetch, l402_balance, l402_spending_report. Run with: npx l402-kit-mcp

MCP stdio server, one tool buy_verified_burst — x402 pay-only-if-verified inference.

Spend limits for AI agents that pay with x402: every paywall is policy-checked before a cent moves.

Pay-per-call Claude and GPT models with prepaid USDC on Solana. Sign in once with your wallet and use a capped solx_ token. You only pay for successful calls.

Enables agents to autonomously pay x402 API requests in USDG on Robinhood Chain while enforcing budget caps and scoped sessions.

9 tools, Lightning-gated. Pay per call. For agents that need verifiable signed actions with an audit trail. Nostr event signing via daemon Publish events to relays Create Lightning invoices Action receipts — signed proof of agent actions Identity attestation

Enables AI agents to create on-chain and web monitors, dead-man switches, cron triggers, and multi-agent coordination with pay-per-use x402 payments.

Provides AI agents with private, pay-per-request internet access through residential/datacenter exit nodes, settling payments in USDC on Solana, along with key governance and self-audit tools.

Enables AI agents to autonomously pay for and discover services using HPP USDC.e over the x402 protocol, without API keys or manual signing.

Enables AI agents to discover, call, and pay for 170+ x402 micropayment services via the minia2a marketplace, with automatic USDC payments and no API keys or subscriptions.

A per-call payment trust and reputation API for AI agents, allowing agents to check if a counterparty is safe to pay before making a payment.

MCP server and A2A agent for AgentsPodium hosting: create, watch, pay for and connect hosted AI agent pods (Hermes, OpenClaw, n8n, Claude Code, OpenCode, Pi)

Enables pay-per-call access control for AI agents using HTTP 402 and on-chain settlement, allowing microtransactions for API usage.

Enables AI agents to autonomously provision, pay for, and manage S3-compatible storage and vector databases without human intervention.

A comparative lab demonstrating MCP protocol evolution from stateful (2025-11-25) to stateless (2026-07-28) using a procure-to-pay agent, highlighting the implications for load balancing and session management.

Project Point One Percent - Agent Pay \[pop-pay] is a payment guardrail and one-time flow protocol specifically designed for Agentic AI (e.g., Claude Code, OpenClaw). It enables agents to handle financial transactions safely without risking unlimited exposure of human-controlled credit cards.

Enables MCP-capable agents to access AgentBook's pay-per-call tools for agent social feeds, funded bounties, DeFi/gas intelligence, and security reconnaissance without API keys or signup.

Checks wash-traffic risk of Algorand x402 endpoints using on-chain analysis, helping agents decide whether to pay USDC.

Enables AI agents to store, read, extend, and share encrypted persistent memory, with pay-per-use access via x402 payments on Base.

Pay-per-task AI agent for writing, research, code, DeFi & blockchain. Pay in USDC on Base or Solana. Supports A2A, MCP, x402 and Agentmail protocols.

Turns any business API into a paid AI-agent service, enabling agents to discover, call, and pay per request via x402 on X Layer.

MCP server for autonomous agents to rug-check tokens, monitor liquidity drains, and get market briefs, with pay-per-call via x402.

Enables Claude to autonomously purchase business location data and pay for it with USDC on Base via x402, while enforcing per-call and per-session spending limits.

Discovers and queries x402-payable APIs at runtime — enables autonomous agents to find, evaluate, and pay for services via USDC micropayments on Base without API keys or subscriptions.

Enables solving reCAPTCHA v2/v3, hCaptcha, Cloudflare Turnstile, and image captchas through MCP tools. Users pay per solve with prepaid credit and can retrieve results asynchronously.

Enables AI agents to pay creators for each citation via the x402 micropayment protocol, with automatic research, grounded answers, and on-chain settlement.

Pay-per-use semantic memory for AI agents with cryptographic attestation. Vector embeddings with SHA256 commitment, secp256k1 signature, and Lightning invoice.

An MCP server for autonomous AI agents to discover, pay for, and rate paid APIs on Casper with policy-controlled approvals and on-chain reputation.

Provides an MCP server that gives LLM agents an evolutionary memory: entries pay upkeep and survive only if they earn their keep through measured outcomes, with tools for querying, settling, and managing memory.