"A guide to developing Chrome extensions" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Give your AI agent a spending limit: approval controls and single-use virtual cards.
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.
Buy a $2 novelty digital rock over x402 (USDC on Base). Serves payment instructions only.
The e-signature API built for agents. One curl to send, one call to pay. ESIGN/UETA. Prepaid credits, no per-seat fees. MCP at zsign.io/mcp.
Ready for a new way to bill pay? Pay any US bill in a snap, right from your AI assistant. Describe or snap a photo of your bill (electric, water, gas, internet, phone, medical, credit card, rent, parking tickets, traffic violations and more) and Papaya reads it, then hands you a secure link to pay by card. Fast, secure, and no juggling twelve logins, with full or partial payments and status updates. Available in the US only. Powered by Papaya (papayapay.com).
Pay any US bill in a snap, right from your chat — utilities, medical, rent, parking tickets & more.
Search pwa.directory, submit a progressive web app, and get a payment link a human pays.
PIX payments for Brazil: verify a settlement with no API key, or sell USDT/USDC for BRL over PIX.
Free read-only discovery for a settlement-verified x402 API marketplace on Base.
Send a fax in Australia (+61). Pay only if it delivers. Email receipt. No card at send.
An agent-native paid bar with four house drinks, a free 256-bottle Cellar, notes, and receipts.
Cash out an AI agent's USDC to a real bank account (non-custodial). Plus Base data + a marketplace
Connect your Safra account to AI via Brazil's Open Finance: balances, statements, cards, investments
Which of your credit cards to use at any store, from verified bank data. No bank login.
Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.
Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual
Processor fees, charge-to-net, invoice totals and proration. 3 of 6 tools free.
Agent-to-business commerce sandbox: intents, offers, bookings. Demo data, ed25519-signed calls.
Payments and pricing math sellers do weekly, computed deterministically over MCP: processor_fees breaks down payment costs with editable presets, charge_to_net answers what to charge to net a target amount, invoice_total validates and totals line items, with discount_stack, proration, and installment_plan in the premium tier.
