"MDN Web Docs" matching MCP servers:

MCP server for validating and generating Brazilian documents (CPF, CNPJ, and bank boletos) with 6 tools, a resource, and a prompt.

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 local deep research on any cryptocurrency token by aggregating market data, protocol metrics, exchange listings, web search results, and structured reports across multiple sources without requiring an API key.

Enables MCP clients to search, browse, preview, and download CSMAR financial data using institutional IP authentication, no account or password required.

Enables read-only consultations of DCTF WEB data from the official source via MCP over HTTP, using prepaid credits.

Enables authenticated MCP clients to automate UI-only operations on Digital Invoicing Software via Playwright, including login/session checks, navigation, dashboards, invoice validation/edit/duplication/export, reporting, screenshots, and user management with per-tenant isolation.

Official Dodo Payments MCP servers - dodopayments-api for live payments, subscriptions, customers, products, refunds, license keys, and usage-based billing (browser OAuth, no API key needed) and dodo-knowledge for semantic search over Dodo Payments documentation.

Pay-per-call data and tools for AI agents over x402, by UnyKorn. 360 endpoints: DeFi and market data, multi-chain wallet reads, wallet and token risk signals, SEC filings, web and domain intel, and AI text tools. Settled per call in USDC on Base ($0.001-$0.25). No API keys or subscriptions; unpaid calls return the exact quote first.

Enables AI coding assistants and agents (Cursor, Claude Code, Windsurf) to access 19 native MCP tools and 400+ deterministic sub-30ms edge APIs—web-to-markdown, TokenSlimmer (-70% LLM cost cutter), prompt security shield, SEPA IBAN VoP, and EU DORA/AI Act compliance—via https://topaigateway.com

One endpoint in front of 950+ data APIs — SEO and AI visibility, finance, social, web search, sales and agent mail. tools/list returns five meta tools, not 580, so the catalogue never lands in a context window. Most clients can point straight at https://mcp.aisa.one/mcp; this package is the stdio bridge for the ones that only spawn a local command. OAuth, nothing to paste.

Non-custodial USDC <-> bank for AI agents. Free quotes; $0.05 USDC per session via x402; 1% commission itemised in every quote. Own funds only. PT + EU/EEA (not UK). 18+.

Open-source MCP server exposing the Agent402.Tools catalog: 500+ pay-per-call tools for AI agents, including browser rendering, web search, PDFs, OCR, LLM inference, code execution, live financial/crypto/macro data, SEC EDGAR, and wallet-keyed memory. Free via proof-of-work, or pay per call in USDC across ten chains via the x402 protocol. No API keys, no signups

Enables searching J-Quants API endpoints, retrieving detailed documentation, generating executable sample code, and answering FAQs via MCP clients like Claude Desktop.

Enables read-only queries to ARCA's agricultural web services for electronic waybills, taxpayer registry, and receipts, allowing agents to retrieve fiscal data without modifying documents.

Five tiny, single-purpose MCP servers for AI agents — arXiv search, YouTube transcripts, web-to-Markdown, market quotes & FX, and a persistent memory vault. No API keys, no bloat.

Free stock, ETF & crypto analysis for AI agents: 10-point score, descriptive verdict and all key metrics for any ticker. Remote MCP server (Streamable HTTP, no auth, nothing to install) at https://www.stoxlyonline.com/api/mcp, plus a stdio server (server.js) for platforms that run MCP servers as a local process. Rate limit: 30 tool calls per IP per hour. Docs: https://www.stoxlyonline.com/mcp

Provides Plaid developers with sandbox integration tools for creating test items, reading financial data, simulating webhooks and login failures, plus docs-quality tools for API search and OpenAPI-vs-Postman-vs-docs drift checking.

One remote MCP server with about 260 tools (also split into 11 focused servers, below) for AI agents: https://tanod.dev/mcp. Connection: streamable HTTP and stateless, with no API key, no account and no OAuth. Setup for 20 clients: https://tanod.dev/connect/?src=gh_mcp Docs for agents: https://tanod.dev/llms.txt OpenAPI: https://tanod.dev/openapi.json

Read-only MCP connector for querying the Protheus (TOTVS) system, exposing 10 GET endpoints as MCP tools with OAuth2 authentication and friendly error handling.

Enables read-only access to Benepass employee-web API, allowing users to view HSA accounts, investments, transactions, documents, and benefits without write operations.