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"Free and open-source GPS without an API" matching MCP servers:

  • open-payments-mcp

    devcer
    F
    license
    B
    quality
    C
    maintenance
    Enables Open Payments operations such as creating incoming payments, quotes, and outgoing payments via the Interledger protocol. Supports wallet address retrieval, grant management, and payment flow automation.
    10

  • mcp-nexi-pos-api

    Knoseman
    F
    license
    -
    quality
    A
    maintenance
    An MCP server for Nexi POS payment operations, enabling creation of purchases and refunds, polling payment states, confirming transactions, and recovering unconfirmed transactions.
    20

  • incomeos-mcp

    Perufitlife
    A
    license
    -
    quality
    C
    maintenance
    Query your income by month and source, and log new monthly income, from any MCP client. Backed by IncomeOS, an open-source income tracker with Stripe sync plus manual entries for sources without an API.
    1
    MIT

  • mailsnail

    iancollins27
    A
    license
    -
    quality
    B
    maintenance
    An open-source MCP server for sending physical mail (letters, postcards, certified mail) directly from AI agents, with per-piece payment and no account signup needed.
    MIT

  • Quaderno MCP Server

    AnderRahe
    A
    license
    -
    quality
    D
    maintenance
    Connects AI assistants to Quaderno's tax compliance engine, enabling tax calculation, tax ID validation, and invoice creation via natural language.
    MIT
  • @gravv/mcp by GravityFinance

    @gravv/mcpofficial

    GravityFinance
    A
    license
    A
    quality
    A
    maintenance
    MCP server for the Gravv payments API that lets AI assistants onboard customers, run KYC, open accounts, move money, issue cards, and exchange currency, with built-in documentation search and safety confirmations for money-moving operations.
    2
    617
    MIT

  • smartbill-mcp

    bogdanripa
    A
    license
    A
    quality
    B
    maintenance
    An MCP server for the SmartBill Cloud API. It lets an MCP client issue and manage Romanian invoices, proformas and payments, download document PDFs, and read VAT rates, series and stock levels.
    23
    1
    MIT

  • @powforge/captcha-mcp

    zekebuilds-lab
    A
    license
    A
    quality
    B
    maintenance
    MCP server that gates API calls to AI agents using proof-of-work (free) or Lightning payment (3 sats), providing challenge, verify, and status tools for per-call authentication without accounts.
    3
    64
    1
    MIT

  • OpenAPI Doctor

    Baneado98
    A
    license
    A
    quality
    C
    maintenance
    A template for building MCP servers with a built-in paywall gate that offers free local execution and premium server-side execution via Stripe and x402 payment lanes.
    1
    MIT

  • blank-invoice-maker-mcp

    InnarM
    A
    license
    A
    quality
    B
    maintenance
    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.
    2
    61
    1
    MIT

  • fabtally-mcp

    zvmzaretsky
    F
    license
    A
    quality
    B
    maintenance
    MCP server for real FDM 3D-printing slicing, quoting, and design-for-manufacturability analysis via the FabTally API, supporting 12 printer profiles and 12 materials. Includes free discovery/printability tools and paid slice/quote/orientation tools settled via x402 (USDC on Base).
    6
  • bolthub by signaltech-org

    bolthubofficial

    signaltech-org
    A
    license
    A
    quality
    A
    maintenance
    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.
    19
    MIT

  • x402-gateway-mcp

    Marysbrain
    A
    license
    A
    quality
    B
    maintenance
    Enables MCP clients to access all endpoints of an x402 gateway by paying real-time microtransactions (USDC on Base) per API call, with automatic tool discovery and spend guardrails.
    23
    89
    MIT

  • MCP Midtrans Documentation

    rissets
    A
    license
    A
    quality
    D
    maintenance
    Enables AI agents to integrate Midtrans payments by providing comprehensive documentation, API references, and code examples for 15+ payment methods across 5 languages. Includes tools for generating charge requests, webhook handlers, and searching documentation without requiring API keys.
    9
    1
    MIT