"Apple Pay" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Pay-per-call web reading for AI agents over x402 — no account, no API key, billed only when content is delivered, with signed provenance on every paid response. Start free with POST /v1/probe.
Non-custodial stablecoin bill-pay rails on Celo & Base for AI agents, settled on-chain via MCP.
Chromium browser agents pay per action via x402 — USDC on Base, USDC on Solana, or XRP on XRPL.
Testnet wallet for AI agents on Aether: pay, get paid and buy from paid APIs, with spending caps.
402xAgent is the check an agent calls before paying any x402 endpoint. It probes the endpoint's 402 without paying and returns a pay / skip / recheck verdict with a reason. Every check leaves a public receipt. It never pays the target.
Verify before you pay or act: site, transaction, token and injection checks for agents. x402 USDC.
x402 layer for AI agents: 35 pay-per-call resources, x402 service discovery, USDG/USDC.
Create, send and track invoices from a conversation in Claude, ChatGPT or any MCP client that supports OAuth. Draft an invoice from one sentence or from last month's invoice for the same client, finalize it, email it to your client and send payment reminders for overdue ones. See revenue by month and by client, download PDFs and e-invoices (ZUGFeRD, XRechnung), and export DATEV packages for your tax advisor. Invoices follow the tax rules of 25 countries, including reverse charge and the small-business VAT exemption. New invoices are drafts, and nothing is emailed until you ask. Pay per invoice with no subscription: the first invoice is free.
Pay-per-call MCP tools for agents: 20 free calls a day, then pay per call with x402 (USDC on Base mainnet) or a prepaid spend key. 30 tools — text/data utilities, x402/EVM-native tools (decode an x402 challenge, verify a settlement receipt on-chain, EIP-712 hashing, ABI encode/decode, Merkle-proof verify, keccak256, EIP-55 address checks) and independent providers' tools priced from $0.001. Signed delivery receipts. No sign-up.
Paid data tools for AI agents, pay per call in USDC via x402: AI visibility, company enrich, SERP
MCP server for crypto payments: an AI agent opens its own merchant account and accepts, sends and exchanges crypto.
Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.
One post → native, validated posts for 14 social platforms, with x402 pay-per-call tools.
Crypto payments for AI agents: self-serve account, invoices, receiving, payouts, exchange.
A real Chromium browser agents can pay for per action over x402 (USDC on Base): navigate $0.005, extract $0.005, accessibility snapshot $0.005, act $0.01, screenshot $0.02, close free. Also runs free self-hosted over stdio via npx @scriptmasterlabs/agent-browser. Six tools with structured error codes and a public receipts log. Source: https://gitlab.com/timothy.walton45/agent-browser
Pay-per-token Claude & Grok inference, settled in Bitcoin BSV. npm package or hosted remote.
112 pay-per-call agent tools: job market and real estate data tools. x402
Quotes and invoices numbered without gaps, sent as PDFs, paid online. Pay per action.
Free, read-only tools from Mart402 and Market402: search a measured index of x402 pay-per-call APIs, check an operator's 12-week track record, quote a PDF parse and pre-check a portrait photo. Nothing here charges or asks for payment.
Gas fees and USD tx costs on 6 chains, cheapest-chain ranking, URL to Markdown. Pay per call, x402.
Cited peptide monographs, trials, safety & FDA status as JSON. Pay per call in USDC via x402.
Cited peptide monographs, trials, safety and FDA status as JSON. Pay per call in USDC via x402.
Markdown scrape, site map, page metadata, screenshots, web search and PDF to text. Pay per call
The whole back office for your AI agent: CRM, invoices, books, email and more. Pay per action.
Verify manufacturing lot provenance and chain of custody. Pay per call with x402 (USDC on Base).
121 pay-per-call agent tools: health care, drug, provider and travel data tools. x402
Order fixed-price digital tasks done by people: find a service, pick a package, pay via Stripe.
Pay-per-call company, SEC, recall, package and domain lookups, PDF to markdown, site audits (x402)
Agents pay one real human for typed answers. First question free, then $2 each, or subscribe.
