"Understanding and Building Probability Density Functions (PDF) Models" matching MCP servers:

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.

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

Enables AI agents to call Safaricom's M-Pesa Daraja API directly, sending STK push prompts, checking balances, looking up or reversing transactions, and receiving results as SUCCESS, FAILED, or UNKNOWN. Requests are sent once per idempotency key with sandbox-by-default operation, so agents can operate and test payments without risking double charges or real money.

Reads and validates any European e-invoice a business receives — XRechnung, UBL, CII, ZUGFeRD/Factur-X PDF, Peppol BIS 3, FatturaPA, KSeF FA(3) — into canonical EN 16931 JSON with plain-language fix hints in EN/DE/PL/IT/FR, plus PDF, CSV and DATEV export. Nothing is stored; works without a key on a small daily quota.

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.

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.

Create invoices from any MCP client via the Invovate API — compute totals and generate PDF, JSON, or UBL invoices in 11 languages. Exposes four tools: calculate_invoice_totals (no API key needed), generate_invoice_pdf, generate_invoice_ubl, and get_invoice_capabilities.

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.

AI-powered invoice automation. Create PDF invoices, predict late payment risk 0-100, auto-send reminders, reconcile Stripe/PayPal payments, track cash flow. 10 MCP tools, 4 resources.

MCP server for POP — enabling LLMs to generate, submit, and manage Italian e-invoices (FatturaPA/SdI), Peppol invoices, and PDF invoices directly from AI assistants.

Enables building client statements of account from existing invoices, credit notes, and deposits, with aged outstanding balances, PDF/plain-text output, and drafted payment chasers at friendly, firm, or final levels.

MCP server for cryptocurrency payment integration, enabling payment requests, webhook verification, and payment URL building.

Enables AI agents to generate documents (PDF/DOCX/Factur-X) and manage electronic signatures (eIDAS/PAdES) via natural language using LayerOne's DocX and Sign APIs.

Enables MCP clients to render HTML to PDF and check a prepaid account balance through two tools, returning PDF resources plus render and billing metadata.

Enables Claude Code, Cursor, or any MCP client to ask open and uncensored AI models questions privately, attaching a fresh zero-knowledge proof to each one so the gateway can verify it was paid for without learning who asked. Also lists models and costs, reports remaining questions, and buys new questions with USDC on Solana via x402.

Enables MCP clients such as Claude and Cursor to manage customers, create and update draft invoices, list or download invoices as PDF and XML e-invoices, and record and list payments in a BillingEngine account. It runs locally with your API key and never deletes data.

Enables AI models to query and compare Brazilian card machine MDR rates and monthly costs across brands and business profiles, including tools for listing brands and tiers, calculating costs, and ranking options.

Enables AI agents to convert documents, images, and data files across 50+ format pairs and to run PDF/image operations such as merge, split, compress, rotate, protect, unlock, extract text, and resize or compress images. Files are passed URL-in and returned URL-out (or saved locally in stdio mode), with tools for checking credits and generating Stripe checkout or billing-portal links.

An MCP server for Grubhub that enables searching restaurants, browsing menus, building carts, checking out, and placing orders, with additional support for campus dining cards.

Enables agents to run 14 billing and finance workflows across Stripe, Gmail, Slack, Google Calendar, Sheets, Drive, Docs, GitHub, Shopify, Linear and Notion — from generating invoices and chasing failed payments to reconciling payouts, assembling dispute evidence and building revenue and fee reports. Reads run automatically, while anything that creates, sends, changes or deletes is shown for approval first.

Connects a locally configured Morning (Green Invoice) accounting account to AI agents for searching customers, invoices, and expenses, uploading receipts from PDF, JPEG, or PNG files, and creating or updating customers and items through the API. All write operations are prepared as drafts that must be explicitly approved by the user before anything changes in the accounting system.

Enables AI assistants to pay for online purchases and subscriptions using one-time prepaid USD Visa cards drawn from the user's own wallet. Every charge requires explicit user approval, and each card is loaded with only the needed amount and freezes after a single payment.

Connects MCP clients to a telephony account so users can manage phone numbers, SIP accounts, routing, SMS, calls, and billing in plain language. It exposes search, schema lookup, and execute tools to run permitted API operations, with confirmation required for paid or destructive actions.

Enables users to plan, prepare, pause, and track connected-TV, digital street-screen, and mobile ad campaigns in plain language through any MCP client, from drafting budgets and audiences to adding creatives and retrieving performance. Payments and activation are never handled in chat; the server provides the exact amount and a link so users complete them in the Publicit dashboard.

Enables opening a Vivid Business account directly from an AI chat by sharing company details or documents, with automatic extraction and pre-filled setup.

Integrates PayU payment services with AI tools through the Model Context Protocol, enabling payment link creation, transaction retrieval, and settlement analysis.

Enables autonomous financial agents and payment systems to analyze transaction streams in real time, detect velocity-based fraud patterns such as card testing, volume spikes, and account takeovers, and produce balanced ledger records with audit telemetry.

An MCP server that enables AI agents to search, pay for, and call paid APIs using the x402 protocol, with automatic USDC settlement.

Enables autonomous financial agents to optimize payment recovery by analyzing decline-code retry windows and mitigating involuntary churn, while enforcing balanced double-entry ledger records, HMAC-SHA256 signature verification, and sliding-window fraud detection through an MCP-compatible interface.

Base library for building MCP e-invoicing servers: abstract base classes, shared Pydantic models, XML utilities, and OAuth2-capable async HTTP client.