MCP Server Directory

x402Shield dev.x402shield/x402shield

Public demo: evaluate AI-agent payment authorization and approval policy. No signing, no settlement.

Crypto prices from WhiteBIT. No key required.

nextbank.holiday holiday.nextbank/bank-holidays

Next bank holiday for UK, Ireland, France, Germany and Spain. Free daily quota, then USDC via x402.

Benefits City io.github.entradox/benefits-city

US bank, savings and credit-card signup bonuses, each source-checked, with expiry dates.

mcp io.github.invoicepdfs/mcp

Render invoices and credit notes as PDFs, and check them against EN 16931 e-invoicing rules.

botx402 io.botx402/server

Inventory reorder plans from SKU sales, stock and lead times. $19 a run, paid by card.

invoice-maker io.github.theluckystrike/invoice-maker

Make PDF invoices from your AI chat: clients, numbering, VAT, overdue reports. All data is local.

Look up protein structures and search the RCSB Protein Data Bank. No key required.

PerpFinder com.perpfinder/perpfinder

Read-only perp futures data: all-in trading cost, venue fees, funding rates and volume ranking

Jithox com.jithox/jithox

8 invoice/payment tools; 5 free, no login. IBAN, bank changes, Peppol. Paid VAT and invoice review.

Fiveable for AP Teachers io.github.thinkfiveable/fiveable-ap-teachers

AP rubric grading, assignment drafts, question-bank materials, and class insights for teachers.

AET Machine Commerce io.github.mnvhmslf/aet-machine-commerce

Read-only PAPER market research for autonomous agents; no live trading or alpha claim.

Crypto markets from Poloniex. No key required.

Book appointments, check availability, list services and create payment links for a Denik business.

402shield io.github.MitchSingh/402shield

x402 payment security and pre-execution transaction risk screening for autonomous AI agents.

TiC Explorer com.ticexplorer/mcp

What US health plans pay for care: negotiated rates by plan, provider and billing code, near a ZIP.

katalis com.meetkatalis/katalis

UK public-record company intelligence: Companies House, payments, contracts, registers, watch lists

Stablecoin rails, corridors and payment provider data app.railway.up.payments-intel-production/payments-intel

Cited stablecoin rails, corridors, providers, chain and token facts for agents. x402/MPP paid.

Deep Blue Alpha — Ethereum Whale Data io.deepbluealpha/whale-data

Live Ethereum whale flows: token activity, top tokens, latest moves, Whale Sentiment Index.

Agent Deals io.github.gmahar82-stack/agent-deals

Pay less for x402 APIs: free pre-payment checks, cheapest working service finder, web/PDF reader.

Saylor Innovations: pay-per-call data com.saylorinnovations/data

271 x402 agent APIs: research, law, medicine, science, finance, public data, security and crypto.

World Bank indicators, countries, and EIA energy series.

Wealthnow io.wealthnow/mcp

351 read-only tools: stocks since 1926, options, CDS, bonds, private markets, 13F, macro and crypto

Unofficial read-only Shopino: search fashion across Iranian shops, compare prices, sizes, stock.