"Google Pay" matching MCP connectors:

Pay-per-action access to APIs and MCP tools over Lightning L402 and Base USDC x402.

Add pay-per-action access to APIs, MCP tools, automations, and digital resources using Bitcoin Lightning L402 or Base USDC x402. AIPP provides payment verification and direct-to-wallet settlement without subscriptions.

Verify anything: email, phone, domain, URL and IBAN validation, phishing/malware URL screening, and OFAC sanctions checks. Pay-per-check in USDC on Base via x402 — no signup, no API keys.

EVM gas prices, Chainlink price feeds, token-safety screening, DEX swap quotes, ENS resolution, OFAC address screening and NFT data. Pay-per-call in USDC on Base via x402 — no signup, no API keys.

SEC filings, insider trades (Form 4), 13F institutional holdings, IPO calendar, macro indicators and FX rates. Pay-per-call in USDC on Base via x402 — no signup, no API keys.

AgentBridge is the only MCP server that gives AI agents access to structured China knowledge assets—university reports, industry briefings, policy analysis, and real-time web content—through x402 micropayments on Base. Everything is machine-readable, pay-per-use, and settled in USDC.

Emercoin swap exposes a keyless MCP exchanger at https://swap.emercoin.com/mcp (Streamable HTTP) so an AI agent holding USDT can buy EMC programmatically — no API key, no account, no callback. Tools: get_swap_config, buy_emc, get_order_status, cancel_order. Call buy_emc with an amount and your EMC address, pay the exact returned figure to the deposit address, then poll by token until delivered. Part of the broader effort to use Emercoin as an identity + memory layer for AI agents.

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

Derived MEV intelligence — liquidation waves, searcher leaderboards, and builder routing. Pay-per-call via x402 USDC on Base.

Pay-per-call tools for autonomous agents, settled in USDC on Base via x402.

Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

Pay-per-call x402 checks before an agent moves money: token safety, wallet risk, identifiers.

Cross-chain liquidation-distress intelligence for AI agents, pay-per-call over x402 (USDC on Base). Free summary/health tools; paid tools for the ranked distress index, targets, one-call mesh snapshot, and non-custodial execution quotes.

Otto IntelA

services.ottoai

Otto AI hosted MCP: 16 pay-per-call market-intelligence tools, USDC via x402 on Base, no API keys.

Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.

Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.

Pay-per-call QUBO/Ising optimization for AI agents via x402 (USDC on Base). No API keys.

Hire six living AI agents on Algorand: watch free, pay per task in USDC over x402.

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

Reputation oracle for AI agents on Base: SAFE/CAUTION/BLOCK + 0-100 score before you pay. x402+MCP