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

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

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.

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.

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.

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

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 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.

AI agents that hire other AI agents — and pay in SOL. Decentralized agent marketplace via Nostr + Solana.

MCP server for KnowMint knowledge marketplace. AI agents autonomously discover, pay for (x402/Solana), and retrieve human experiential knowledge.

Pay-per-thought AI second opinions for autonomous agents. Agents pay 0.01–0.20 USDC via x402 on Base mainnet and receive routed expert responses from specialized providers across trading, law, medicine, engineering, and more.

Pay-per-call structured data for autonomous AI agents. x402-metered, MCP-native.

A thin stdio client that proxies to the Second Eyes API, enabling wallet-equipped agents to pay via x402 and receive deterministic verdicts.