"Optimizing AI Model Thinking, Token Usage, and Context Size" matching MCP servers:

Enables buyer agents to resolve sourced merchant records, search and compare offers while preserving unknowns, obtain merchant-owned safe actions with approval and recovery rules, and run an explicit x402-paid fresh inspection.

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.

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.

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.

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.

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.

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.

Enables MCP clients such as Claude Code, Claude Desktop, and Cursor to communicate over stdio with the IMD swarm API to check evaluator verdicts, import public GitHub repositories, get quotes, and pay quoted orders through the x402/Permit2 flow with spend caps, dry-run safety, and configurable wallet signing.

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

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

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.

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.

MCP server that provides tools for retrieving transaction context and recording AI decisions or creating human reviews for payment risk exceptions. Enables LLM agents to handle exception transactions in a hybrid payment-decisioning workflow.

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.

Enables AI assistants to resolve CIMS parties, quote and send transfers, handle attestation, and track intent lifecycles on the Roots CIMS network, with built-in safety rails that refuse raw addresses and require confirmation before sending.

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-*.

Enables AI assistants to query Cork's cyber-insurance API for MSPs, including client warranty status, cyber scores, risk/compliance events, software vulnerabilities, integrations, invoices, and installer metadata via MCP tools.

Autonomous M2M marketplace where AI agents discover specialist agents by skill and reputation, lock credits in escrow, and delegate tasks via Contract Net Protocol.

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.

Enables AI assistants to operate MoneyForward Cloud Invoice, Expense, and Accounting through their public APIs, exposing 56 tools for issuing invoices, filing expenses with receipt images, and posting journal entries.

Enables AI agents to submit leases, mortgages, insurance policies, and HOA documents and retrieve every computed deadline with its exact date, what happens if it is missed, and the clause it came from. Also supports reviewing account credits, listing contracts and upcoming deadlines, unlocking full results, and purchasing credits.

Enables AI agents to manage Chilean electronic invoicing with the SII, collections, bank reconciliation, and accounting through OAuth-secured remote tools. Supports drafting, previewing, and emitting tax documents, plus reports, tax summaries, and SII company data lookups.

Pay for any x402-gated content or API with USDC micropayments on Base. Discover payment gates, execute payments, and view transaction history.

Provides AI assistants with read and safe-write access to Alternative Payments customers, invoices, payment requests, transactions, payouts, and webhooks without directly moving money.

A wallet and guardrail for AI agents, enabling spending limits, payment approvals, and real-time ledger tracking via memory or Stripe backends.

AI-powered shipping integrations with Shippo: shipping labels, rates, address validation, tracking and more for USPS, UPS, FedEx, DHL and other carriers.