"Integrating Web3 Wallet Functionality in AI Chat Applications" matching MCP servers:

Enables agents to autonomously pay x402 API requests in USDG on Robinhood Chain while enforcing budget caps and scoped sessions.

Enables AI agents and users to access an account-owned crypto wallet via MCP, providing tools for balances, transfers, swaps, bridging, merchant checkout, policy-constrained contract calls, signing, app connections, and Hyperliquid spot/perpetual orders.

MCP server that gives terminal AI agents a guarded USDC wallet with firewall, automatic 402 payment handling, and budget limits.

Enables agents to hold a local Base USDC wallet, receive funds, make bounded x402 payments, prepare seller registration, and recover Voidpay Marketplace results over stdio.

Enables AI agents to discover and inspect x402 paid APIs, check payment requirements, and make capped payments using configurable wallets, with optional Nevermined credit support. Human-controlled spending limits and network settings help keep payments within approved hosts and budgets.

Gives AI assistants a non-custodial wallet that can pay x402 endpoints and send QU on the Qubic network, but only within human-set spending caps, allowlists, and approval requests enforced in code outside the agent. Keys stay in the local OS keychain, and every payment is journaled before sending and settled from the chain afterwards.

Provides AI agents with a prepaid, capped payment method so they can request charges without accessing real accounts. Enforces spending limits, requires human approval for larger transactions, and supports out-of-band approvals via CLI, dashboard, or Telegram.

Enables agents to maintain sandboxed spend ledgers, enforce monthly budgets, transfer funds between agents, and generate invoices, all without real financial accounts.

Enables buyers to authorize Stripe machine payments by validating seller challenges, consulting a policy gateway, and issuing bounded shared payment tokens.

A unified MCP server providing x402 payments, TAP identity verification, referral onboarding, and domain registration for Claude Code and other MCP clients.

Enables Claude and Codex to discover and execute paid APIs via a credit balance, handling registry search, top-up, and execution.

Enables AI agents to make policy-scoped payments with spending caps, recipient allowlists, approval thresholds, instant revocation, and an append-only audit trail in a sandbox wallet.

An open-source, zero-dependency Model Context Protocol (MCP) server and HTTP 402 payment gateway built for Cloudflare Workers and Node.js. This project enables AI agents (Claude Desktop, Cursor, etc.) to natively discover, negotiate, and autonomously pay for digital resources over Solana USDC using standardized MCP tools and standard HTTP 402 Payment Required headers.

A wallet for AI agents: test funds, payments, paid APIs and escrow on Aether. Give an AI agent its own wallet on Aether, a proof-of-work chain with post-quantum (ML-DSA-44) signatures. The agent gets an address and testnet funds in one step, then sends and receives AETH or USDC under per-payment and daily limits you set. It can pay for APIs that answer HTTP 402, sell its own, rate the services it

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 that exposes the wallet-watch subscription-tracking REST API as tools for AI assistants, enabling natural language management of subscriptions including listing, renewal forecasts, spend summaries, and actions like snoozing or downgrading.

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 agents to run image A/B preference tests with human participants, retrieve live pricing and availability, create and purchase studies within configured USDC spending limits, and check vote results.

A wallet for AI agents with spending limits: pays x402 and MPP APIs in USDC (Base, Solana, Algorand) and RLUSD (XRP Ledger), checks every payment with presign-guard first, and asks for approval on your phone above your limits. Source in the wallet-mcp folder; npm: presign-guard-wallet-mcp.

Enables Claude to access, analyze, and optionally modify invoices, installments, receipts, clients, and financial reports via the Fatture in Cloud API v2, with read-only default and multi-layer safety.

MCP server for managing a 2328 merchant account, providing tools for balances, exchange rates, invoices, static wallets, payouts, and conversions via natural language.

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 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.

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.

Agentic MCP for buying VISA/MasterCard cards, VISA prepaid cards, eSIM and Gift Cards (to pay for 20+ services). Top up with USDT TRC-20.