"How to modify local files" matching MCP servers:

Enables AI agents to discover and pay for x402-gated HTTP APIs, handling 402 Payment Required flows with local signing. Supports EVM and Solana with non-custodial wallet management.

A local, read-only stdio MCP server that lets a Grok Build CLI agent check how much of its weekly SuperGrok / Grok Build usage pool is left, when the period resets, and its Extra Usage cap via tools like get_budget. It reads the existing grok login session and returns per-product figures as JSON, mirroring the TUI /usage screen, so agents can pause before expensive work when quota runs low.

Enables AI agents to verify links and payments for scam risk before acting, returning deterministic allow/ask/deny verdicts with scores, reasons, and warnings using local checks.

A read-only MCP server for the open-banking.io PSD2 API that lets AI agents query personal bank balances and transactions via natural language, with zero-knowledge encryption ensuring all sensitive data is decrypted in-process and never exposed to third parties.

Enables AI agents to call paid APIs and settle HTTP 402 payment challenges with USDC on Base, without private keys ever being involved.

Enables AI agents to call LLM APIs via x402 micropayments in USDC on Base network, manage a local wallet, and query consumption records.

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.

Enables running a local MCP server for Poland's KSeF (Krajowy System e-Faktur) e-invoicing system, so invoice data stays on the user's own machine rather than passing through an intermediary service. It currently exposes only a diagnostic server_info tool, with invoice search and retrieval tools still to come.

Enables issuing credit notes and credit memos against an invoice or standalone as revisable drafts that can be finalized into frozen numbered documents, then rendered as Markdown or printable HTML with totals broken down by currency, reason and month. All amounts are handled as integer minor units and all data stays local, so nothing is sent anywhere.

Payment firewall for AI agents: a signed, independently verifiable verdict on every money-moving action. Blocks wrong/lookalike payee, over-cap, and duplicate-invoice (BEC) fraud before money moves — anyone can verify a verdict against the public JWKS. Free, local-first, non-custodial.

Enables AI agents to stamp, cancel, and query Mexican CFDI 4.0 invoices through MCP tools, with support for local stdio and hosted HTTP transport.

A local MCP server that integrates ProofJSON to assess invoices before payment, providing allow/review/block decisions with confidence scores and verification capabilities.

Enables AI clients to check an application balance and preview or send bulk SMS and airtime, either through a hosted OAuth connection that needs no local install or via a self-hosted stdio/Cloudflare Workers deployment using your own credentials. Sending is preview-only by default and gated behind environment, recipient allowlist, and mutation opt-in settings.

Russian business paperwork as PDF: invoices with a bank payment QR code (GOST R 56042), acts of completed work, payment QR codes and amounts in words. Requisites are checksum-validated; fully local, no API key.

Enables MCP clients to get quotes for certified human translations of official documents, upload source files, place and pay orders, and track delivery and payment status.

It enables an LLM agent to list and inspect invoices, run three-way matches against purchase orders and goods receipts, and route exceptions under server-enforced policy.

Unofficial MCP server to operate MakeLeaps clients, quotes, and invoices from LLMs via the MakeLeaps API, with local execution and no telemetry.

Provides read-only access to a therapy practice's client portal, letting users view upcoming appointments, paperwork requests, standing forms, balances, receipts and secure message threads, and download completed documents and payment receipts as PDFs. It authenticates either with server-side credentials or by relaying requests through the user's already signed-in browser tab, and never sends messages, signs forms, uploads files, or makes payments.

Enables querying and downloading Equatorial Energia invoices via MCP tools, supporting listing consumer units, listing invoices, and downloading second-copy PDFs with local data extraction.

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 parse, validate, send, and inspect X12 EDI documents via the SignalEDI Core API, with optional QuickBooks integration and a demo mode for keyless local testing.

Local, privacy-first access to bank and credit-card transactions for Copilot, backed by SimpleFIN.

Enables users to access transaction reports and exports, create payment links, and optionally match payments to a payer roster workbook through an MCP interface.

Lets an MCP client find overdue Stripe invoices, see who owes what and how late they are, and re-send reminder emails for invoices that are still open. Runs read-only unless writes are explicitly enabled, re-checks invoice state before sending, and logs every call to an audit trail.

A local MCP server providing payment validation tools and resources, including card number Luhn checks, card network detection, and IBAN validation, with no network calls required.

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.

Enables agents to price, send, and track encrypted file transfers, with files chunked, encrypted, and hashed locally before any network relay, and to retrieve signed collection receipts. It supports prepaid credit pools and gives agents a privacy-first transfer capability within their own trust domain.

Enables AI agents to integrate client systems with a coupon-management REST API through local stdio, covering eligible coupon discovery, quotes, redemptions, payment recording, reconciliation, and reversals while following the correct integration flow.

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 spend with the user's own key by paying via USDT TRC-20 and buying Visa/Mastercard prepaid cards, travel eSIMs, and gift cards, and also provides access to policy and how-to documentation.