"A search about the concept and practice of magic" matching MCP servers:

Pay-per-use semantic web search for AI agents. Powered by SearxNG, agents pay in sats via Lightning Network micropayments — no API keys required.

Credit and payments for AI agent developers — over MCP. No crypto required

A proof of concept MCP server that gives AI agents business context for e-commerce operations including orders, inventory, logistics, returns, claims, and payments.

x402-trust gives AI agents a "check before you pay" layer for the x402 ecosystem.

Connects Claude to the customer side of Housecall Pro, letting you view estimates and invoices, check company details, and decline estimate options using the link your contractor sent.

Create free, no-signup invoices from your AI assistant — the create_invoice tool returns a link that opens blankinvoicemaker.com pre-filled, ready to download as a watermark-free PDF.

Enables MCP-capable agents to search the curated gold-402 directory of x402 services, probe any endpoint for valid 402 payment terms, and optionally purchase a human editorial verdict for a resource.

Discover and pay for APIs and MCP tools per call over Bitcoin Lightning (L402): search the bolthub marketplace, preview prices, and pay from your own wallet (LND, NWC, LNbits) with hard budgets, prepaid credit, scoped sub-agent delegation, and verifiable receipts. Non-custodial and works without a wallet for search and free tools.

Enables AI agents to gate real-world side effects through a durable decision record, ensuring at-most-once initiation, deduplication, budget enforcement, and auditable outcomes across retries and failures.

MCP server for eBay buyer-side workflows enabling search, watch, bid, buy, and management of MyeBay via a hybrid REST and Trading API stack.

Pactus is an MCP server for parsing and validating ISO 20022 payment messages directly from chat. It exposes nine tools that let AI assistants inspect or validate pacs.008, pacs.002, pain.001, and camt.053 messages — the message types at the centre of the CBPR+ migration — without leaving the conversation.

Enables querying MRR, churn, and revenue from Stripe, Gumroad, and Lemon Squeezy directly inside Claude, allowing natural language questions about business metrics.

Enables agents to search a verified directory of machine-payable services, inspect service and wallet reputation, and get pre-payment checks before spending.

Enables AI assistants to interact with the full range of Paystack APIs, allowing operations like transaction management, customer creation, and payments through natural language.

Enables AI assistants to search real products, purchase with user approval, track deliveries, and run a seller business end to end via the Firestarter commerce platform.

MCP server for Italian electronic invoicing via the Invoicetronic API, enabling management of invoices through SDI with 20 tools for sending, receiving, exporting, and more.

The trust-and-settlement rails of the agent economy: identity, trust, escrow, metering, arbitration, compute-carbon ledger, covenant, provenance, offsets, ERC-8004 bridge, surety, notary, and discovery — plus sellable measurement/CAD services. Durable, machine-checkable invariants, free rails.

MCP server to connect AI assistants to the AdvinPay payment API, enabling PIX charges, transaction queries, and documentation search.

An MCP server that enables AI agents to search, pay for, and call paid APIs using the x402 protocol, with automatic USDC settlement.

A Model Context Protocol server that exposes the flexprice API as tools for AI assistants, enabling management of customers, plans, prices, subscriptions, invoices, payments, and events from IDEs or CLI.