"An overview of temporal knowledge graphs" matching MCP connectors:

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).

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.

Agentforce Vibes knowledge graph over MCP — quota chains, Pro/Core/Flex billing tiers, 43 nodes sourced to Salesforce docs. Works in claude.ai in 30 seconds.

Buy any of 24,000+ live x402 services with USDC on Base — the open marketplace for the agent economy.

Agent-native helpdesk. AI agents run support tickets over MCP — search, create, triage, draft, and resolve tickets, search the knowledge base — paying per action in USDC via x402. Read tools are free; priced tools return HTTP 402 with payment terms.

Resolve, discover & pay pay: aliases for AI agents; returns a signed OFAC-screen attestation.

Print and mail physical letters and postcards to US postal addresses, plus address verification. Upload PDF/HTML/Markdown/text/DOCX/image documents, get a quote, and pay per call with x402 USDC on Base mainnet or credit card. Supports certified/registered mail with proof of delivery and mail-merge templates.

OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the

Delegare provides secure payments for AI agents. Google AP2-powered payment authorization for AI agents. Issue scoped spending mandates with hard limits, merchant controls, and no exposure of card credentials or private keys. Agents pay across dual rails: cards and ACH via Stripe, or USDC and USDT on Coinbase Base. Supports paid API access and x402-protected requests through MCP.

Read-only buyer-side MCP spend gate for paid APIs, MCP endpoints, and x402 routes. Returns BUY / WAIT / AVOID with maxSpendUsd, receipt expectations, trust/freshness health, safety boundaries, and next action before an agent spends.

The first commercial implementation of HTTP 402 Payment Required for creator content monetization. AI agents pay $0.0025 per content pull from paywalled creator libraries. Patent-pending micropayment infrastructure — creators get paid automatically.

Marketplace of pay-per-call APIs for AI agents. Top up once with USDC, then call any listed API - gasless, walletless, metered per request. Includes onboarded providers and hundreds of x402-native APIs discovered on-chain.

Merchant-of-record MCP: AI agents sell software & digital goods, global tax handled, BYO key.

Give your AI agent an x402 wallet: discover and pay for services in USDC, or earn from your own.

Novoriq Intelligence Gateway is an AI-native MCP server for Stripe dispute intelligence and revenue recovery workflows. It analyzes evidence strength, evaluates recoverability, and routes founders to secure forensic recovery workflows inside the Novoriq Engine.