"MCP server for finding research data and models for AI/ML training" matching MCP servers:

Free x402 endpoint checker plus paid report and metadata tools. Remote MCP server for agents. Written by AI named Nock, not a human.

Pay-per-call USDC payment proxy for AI agents. Issue scoped Pay Tokens with hard spending caps and auto-journal every charge to freee / Money Forward / QuickBooks.

10 MCP servers so agents can work in Korea: Naver Smart Store, Coupang, Cafe24, public data (business status, holidays, addresses), HWP files, KakaoTalk, Popbill e-tax invoices & 알림톡, Toss Payments, Japan→Korea sourcing, tax calendar — with human approval on every write. npm @appmonster/mcp-*.

Client-side MCP wrapper for Orisha Data's public x402 endpoints, providing free preview tools and paid market data access via x402 payments.

Enables AI assistants to query live pricing and stock, place and track orders, and retrieve invoices through Dicker Data's B2B partner/reseller REST API.

Connects MCP clients to a telephony account so users can manage phone numbers, SIP accounts, routing, SMS, calls, and billing in plain language. It exposes search, schema lookup, and execute tools to run permitted API operations, with confirmation required for paid or destructive actions.

Enables AI agents to fetch real-time weather conditions, 5-day forecasts, and coordinate-based climate data for global locations, with x402 micropayment integration for paid API access.

Enables AI agents to create and manage contract-guarded USDC wallets on Base with enforceable per-payment, daily, and monthly caps, vendor allowlists, escalation thresholds, and freeze controls. It provides read-only policy checks plus unsigned transaction proposals for payments, funding, vendor management, wallet creation, and module deployment without holding keys or broadcasting.

MCP server for matchmaking and dating, enabling users to register, answer a questionnaire, receive daily matches, and send paid greetings through natural language in AI chat interfaces like Claude and ChatGPT.

MCP server for creating and fiscalizing invoices via solo.com.hr API. Enables AI agents to generate invoices, retrieve invoice details, list invoices, and check next invoice number.

Enables users to retrieve BIN data for a given BIN number, with optional enhanced attributes for richer insights.

Daily market-regime context for trading agents: is the market risk-on or risk-off? Free tools: rules, schema, ledger of issue hashes, 7-day-delayed issues, full PAPER results record (losses included), disclosures. Paid tool: today's issue via x402, 0.10 USDC on Base, with spend caps and optional Agent Trust payment preflight. No track record; not investment advice.

Accounting AI - MCP server providing AI-powered tools and automation by MEOK AI Labs

Track SaaS subscriptions, renewal dates, spending, and find duplicate services.

Enables AI agents to browse, list, buy, review, and get paid for digital goods through MCP tools, including balance, ledger, checkout-link, upload, and payout operations. All money is simulated demo credits with no payment processor connected, and seller-authored text is returned in safe data envelopes.

Provides a three-layer payment firewall for AI agents, enabling identity verification, risk screening, and execution authorization with on-chain policy enforcement for secure and auditable transactions.

Lets AI agents and developers list a catalog of troubleshooting datasets, preview up to three records per product for free, and get Lightning payment instructions to unlock full structured datasets.

Enables AI assistants to learn about a Fort Lauderdale corporate video studio, plan videos and draft scripts, send briefs and brand guidelines, find and book calls, and get deposit links for fixed quotes.

Enables agents and humans to pay per question over x402 and receive plain-language answers about on-chain activity, priced by complexity before execution. Each paid request runs a live subgraph round trip to search, validate, generate and execute a GraphQL query, then synthesizes the raw results into a grounded response alongside the underlying data.

AI Agent Hub is a pay-per-call API platform for AI agents Every call is billed automatically in USDC using the x402 protocol - there is no API key, no account, and no signup. Agents get instant access to data queries, file storage, and ad impressions, paying only for what they actually use. The same tools are also exposed natively over MCP, so any MCP-capable agent can discover and call them

Enables AI agents to browse product catalogs and make purchases through a policy engine that enforces spending limits, requires human approval for certain amounts, and logs all actions to an audit trail.

Turns messy real estate data into clean, scored, AI-ready property intelligence for Columbus, OH metro, with pay-per-query via x402 micropayments. Enables natural-language search, investment scoring, and enrichment tools for MCP clients.

Discover audio and LLM services, compare seven voices, and check prices for free. Generate speech, transcribe audio and request LLM text with optional capped USDC payments on Base; voice-cloning requirements are also available.

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

Enables MCP clients to discover and call pay-per-call hub agents as individual tools, with per-call USDC spending caps on Base, automatic x402 payment signing, and provenance verification.

Verisett AI is a decentralized task escrow and clearinghouse server designed for autonomous AI agents. Built with FastMCP, it provides a trustless financial and verification layer allowing AI agents to create contracts, claim delegated tasks, verify deliverables, and execute programmatic settlements seamlessly.

Invoice Generator AI - MCP server providing AI-powered tools and automation by MEOK AI Labs

Enables AI assistants to create and manage invoices, process sandbox payments and refunds, generate PDF receipts, and inspect transactions, subscriptions, disputes, and merchant insights through a unified tool gateway backed by PayPal Sandbox APIs.

Enables AI agents to use pay-per-call web-to-Markdown, structured extraction, crawling, Base token and wallet data, FX rates, and crypto alert tools via USDC payments on Base.

MCP server for Online Boutique AI Assistant that exposes 18 e-commerce microservice functions via the Model Context Protocol, enabling any MCP client to manage products, carts, checkout, payments, and shipping.