"Web3.js" matching MCP servers:

Lets an AI agent hire and pay a verified human: post real-world tasks (voice, observation, judgment) and pay in USDC via a non-custodial x402 auth-capture escrow on Base, budget frozen at deploy. Humans verify their X identity before submitting.

MCP server for Tersign, the evidence layer for agent commerce, enabling agents to issue, verify, and manage signed receipts, compliance records, refunds, and disputes on a counter-signed hash-chained ledger.

Model Context Protocol (MCP) server for Spanish Electronic Invoicing. Provides tools to generate, validate, and submit invoices across VERI\*FACTU, Facturae/FACe, SII, TicketBAI, and Crea y Crece B2B.

MCP server for Isbank (Is Bankasi) developer API (Turkey). Enables access to accounts, balances, transactions, exchange rates, transfers, and credit cards via OAuth 2.0 authentication.

Enables agents to list, preview, confirm, and pay for HTTP resources via x402, while providing a payment ledger and Binance account/market-data context.

Provides Japanese tax and invoice utilities such as consumption tax calculation, withholding tax, invoice number validation, and tax rate summarization, enabling AI assistants to perform these operations locally without external APIs.

Foundational MCP/A2A-native core platform for secure credential injection, native x402 micropayments, and Agent-to-Agent routing.

Enables QuickBooks Online integration for financial management with CRUD operations, reporting, real-time updates, and automation.

An accounting-ops agent that reconciles payments against open orders, auto-books provably safe payments through a deterministic policy gate, and escalates exceptions to a human queue with audit trails.

Enables human-in-the-loop authorization for AI agent transactions, allowing real-time approval or denial of purchases based on configurable spending limits, vendor blocklists, daily caps, and category restrictions.

Enables AI assistants to manage an online store for honey and beekeeping products, including order tracking, inventory updates, sales stats, and invoice resending via the Model Context Protocol.

Enables AI agents to issue, correct, and register legally compliant Spanish electronic invoices with AEAT VeriFactu, supporting F1/F2 types, R1–R5 correctives, and NIF validation from Claude, ChatGPT, Cursor, or VS Code.

MCP Server for the LINE Shopping API, enabling AI agents and tools to interact with LINE Shopping data and operations via the Model Context Protocol.