"Researching an author based on their books" matching MCP connectors:

ManaBuy MCP Server is a stdio-based Model Context Protocol server for integrating ManaBuy product and order APIs with MCP clients. It exposes tools for product search, product detail retrieval, SKU and order-field inspection, order quotation, authenticated order creation, order status lookup, and order detail retrieval, with explicit confirmation required before any order-creation workflow.

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.

x402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.

Pay-per-query x402 business intelligence on Base, settled in USDC via the native 402 payment flow.

78 agent APIs with x402 micropayments on Base. USDC settlement.

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.

Discover Algerian COD stores on Mystoq, or manage your own: products, prices, shipping/fraud tools.

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

Print & mail PDF/HTML/Markdown/text/DOCX/images to US addresses; pay per call in x402 USDC on Base.

Pay-per-call JSON repair + JSON Schema validation for AI agents (USDC on Base, x402).

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.

Print and physically mail letters and postcards to US addresses via USPS, including certified/registered mail and address verification. Paid per call in USDC on Base via the x402 protocol, no signup.

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Multi-seller shopping for AI agents. Settle via Stripe MPP or x402 USDC on Base. Hosted.

Business finance on Conta Simples, bank and card statements, corporate cards (list/block/unblock), c

Digital account and billing on Asaas with the full official REST API v3 (api.asaas.com), balance, ch

Multi-seller shopping for AI agents. Settle via Stripe MPP or x402 USDC on Base. Hosted.

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.