Standalone MCP directory — 61862 servers across 36145 domains, each exposing a remote (streamable-http) endpoint and health-probed via a JSON-RPC initialize handshake.
Add your serverAggregated from the official MCP Registry, Smithery and other public registries, plus our own crawling and operator submissions. Every server is de-duplicated by endpoint, health-probed via a live JSON-RPC initialize handshake, and statically scanned for malware & prompt-injection patterns in its advertised tools before listing — yielding 61862 indexed servers, of which 53021 answered within the last 6 h.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 | Homo Universalis — HU-DIAMOND v1.1 Cryptographic Verifier & AST Kintsugi MCP Server | A | 10.000 |
| 2 | FlowState Hosted | A | 10.000 |
| 3 | Verified x402 Catalog | A | 10.000 |
| 4 | True Value Rankings | A | 10.000 |
| 5 | X402-Broker Universal MCP Gateway & Multi-Agent Swarm Router | A | 10.000 |
| 6 | GraphQL operation count, query discarded | A | 9.998 |
| 7 | Paper Search (arXiv + Semantic Scholar + OpenAlex) | A | 9.994 |
| 8 | BNF production count, body discarded | A | 9.994 |
| 9 | multibase z-prefix, value discarded | A | 9.994 |
| 10 | Liters to US gallons | A | 9.994 |
| 11 | Slugs to kilograms, number discarded | A | 9.992 |
| 12 | Sponsored Agent Placement | A | 9.991 |
| 13 | UUID v7 unix-ms layout, value discarded | A | 9.991 |
| 14 | Train-Case segment count, text discarded | A | 9.991 |
| 15 | Utility 87 | A | 9.991 |
| 16 | Utility 43 | A | 9.991 |
| 17 | Asia/Sakhalin clock | A | 9.991 |
| 18 | GitHub topic slug charset, value discarded | A | 9.989 |
| 19 | Utility 18 | A | 9.989 |
| 20 | pyproject.toml table count, body discarded | A | 9.989 |
All MCP servers
Continuously aggregated · refreshed daily.
“BentCrypto Machine Payments” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Paid token risk and security intelligence for AI agents over MCP with x402 payments.
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Paid token risk and security intelligence for AI agents over MCP with x402 payments.
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Paid pre-trade token risk and token security intelligence for AI agents. Token Risk supports Solana and Base; Token Security supports Solana. Payments use x402 USDC with no traditional API key required.
“Coal - Payments for AI agents” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
uptime_30d 1.0%; p95 315.7ms; conformance: fail
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# Coal Coal gives AI agents a real checkout. Discover merchants through the decentralized 0G Storage catalog, pay autonomously in USDC on Base via x402 (Coinbase) or OKX APP (v2 envelope), and download purchased products — all without a human in the loop. Receipts are anchored on 0G Chain, allowing any third party to independently verify payments without trusting Coal itself. The MCP server is fully multi-tenant: every user supplies their own wallet key through the `X-Coal-Agent-Key` header, meaning the server never stores long-lived private keys or custody secrets. Agents are gasless by default — Coal covers operator gas costs. --- ## MCP Tools (13) ### Discovery & Marketplace * `discover_merchants` Browse the marketplace as a Markdown product grid * `search_products` Search and filter by product name, price, or tags * `get_merchant_profile` Retrieve merchant metadata and payout addresses * `query_merchant_memory` Natural-language merchant Q&A powered by TEE-backed 0G Compute --- ### Payments & Checkout * `check_paywall` Check whether an address has already paid * `create_checkout` Create a Coal checkout session *(requires API key)* * `get_checkout_status` Retrieve checkout session state and payment status * `pay_merchant` Send USDC on Base using ERC-3009 gasless transfers --- ### Verification & Delivery * `verify_receipt` Verify the complete proof trail: 1. Base transaction 2. 0G Storage receipt 3. 0G Chain anchor * `download_product` Verify on-chain payment and return a signed download URL --- ### Infrastructure & Agent Utilities * `get_0g_health` Check live 0G mainnet status * `agent_wallet_status` View derived wallet address and USDC balance * `setup_instructions` Print the full integration and setup guide --- ## Live Demos * Claude paying $0.10 for an ebook end-to-end `https://agent.usecoal.xyz` * x402 paywall demo `https://oracle.usecoal.xyz/api/price/ETH` --- ## Stack * Dual-protocol support: * Coinbase x402 * OKX APP * Base USDC settlement * 0G Storage receipts * 0G Chain receipt anchoring * 0G Compute Sealed Inference for policy execution * ERC-3009 gasless payment flow ---
“Dodo Payments” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Dodo Payments API: payments, subscriptions, customers, products, refunds, licenses, usage.
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mcp degraded
Payments · maintained by Dodo Payments
“IntentFence Payment Firewall” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Signed U.S. CPI data, Base wallet risk, x402 quote checks, and payment preflights for AI agents.
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mcp x402 ok
Signed U.S. CPI data, Base wallet risk, x402 quote checks, and payment preflights for AI agents.
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uptime_30d 1.0%; p95 238.2ms; conformance: fail
“Invoice & Payment ID Validator” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Check IBAN, BIC, EU VAT (live VIES), UK VAT, US EIN before an agent pays an invoice. Paid: RapidAPI
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mcp ok
Pay/review/hold verdict for invoice payees: cross-checks IBAN, BIC, VAT, EIN. Paid: RapidAPI
“Patsnap Maintain Payment” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Patent search and freedom-to-operate intelligence using query, semantic, image, family, legal-status, and analytics workflows.
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Patent search and freedom-to-operate intelligence using query, semantic, image, family, legal-status, and analytics workflows.
“Payments” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Planos, assinaturas, links de pagamento e métricas
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Planos, assinaturas, links de pagamento e métricas
“payments-intel” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Cited stablecoin rails, corridors, providers, rail holidays, regulators for agents. x402/MPP paid. Who can on-ramp or off-ramp this stablecoin in this country? Which provider can move USDC to MXN, and over which rails? Cited, dated data on stablecoin issuers, ramps, payout corridors and payment providers (/v1/providers, /v1/provider, /v1/stablecoin-rails, /v1/corridor), plus chain facts (/v1/chain), stablecoin token facts (/v1/token), free address format checks (/v1/address-format), payment rail holiday calendars (/v1/rail-calendar), regulator register lookups (/v1/regulator) and examples (/v1/examples), sold per call. Routes with POST aliases (the paid routes plus /v1/rail-calendar and /v1/regulator) accept GET or POST (JSON body with the same params). Operated by an AI agent (disclosed). Paid routes use x402 (Base) or MPP (Tempo). OpenAPI: https://payments-intel-production.up.railway.app/openapi.json. MCP: https://payments-intel-production.up.railway.app/mcp.
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Stablecoin rails, corridors and payment provider data for agents: cited, dated answers. Paid per call (x402 Base, MPP Tempo). Free search. Information only, not advice.
“Stablecoin rails, corridors and payment provider data” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Stablecoin rails, corridors and payment provider data https://payments-intel-production.up.railway.app/mcpmcp ok
Cited stablecoin rails, corridors, providers, rail holidays, regulators for agents. x402/MPP paid.
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Stablecoin rails, corridors and payment provider data https://payments-intel-production.up.railway.app/v1/providermcp x402 ok
Cited stablecoin rails, corridors, providers, rail holidays, regulators for agents. x402/MPP paid.
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Remote MCP server for integrating AI agents with ifthenpay payment services.
B+8.9 🔓 open streamable-http -
Launch products and branded checkouts on Payments AI, the Merchant of Record for AI-built apps.
C5.3 🔓 open streamable-http -
Checks AI-agent purchase authority before payment. Returns ALLOW, REVIEW or BLOCK; never pays.
C+6.6 🔓 open streamable-http -
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B8.4 🔑 human key streamable-http smithery_api_key -
dev.kgninja/check-payment-recipienthttps://check-payment-recipient.fuwafuwow.workers.dev/mcp● healthy
Payment safety check for AI agents before signing. $0.05 per check; $0.50 batch (20). Via x402.
B+8.8 ⚡ agent-pays · x402 streamable-http -
Stablecoin escrow payments the buyer can dispute, with a signed receipt. Pay a wallet or an email.
B8.8 🔓 open streamable-http -
Stripe payments for AI agents. Create links, verify, manage customers.
B+8.9 🔓 open streamable-http -
PHANTOM ID MCP payment server: agent-to-agent USDC payments on Base.
A9.5 🔓 open streamable-http -
io.github.AgentTanuki/x402-payment-safetyhttps://agent-guild-5d5r.onrender.com/mcp/payment-safety/● healthy
Authorize x402 payments before signing with request-bound, signed safety decisions.
A9.7 🔓 open streamable-http -
Dodo Payments API: payments, subscriptions, customers, products, refunds, licenses, usage.
C+5.7 🔓 open streamable-http -
Inspect payment policy, retrieve and verify receipts, or create post-payment observation receipts.
B+9.2 🔓 open streamable-http -
Semantic search over the current Dodo Payments documentation. No authentication required.
B+9.0 🔓 open streamable-http -
x402 Payment Request Parserhttps://x402-safety-kit-production.mk-career-planning.workers.dev/mcp● healthy
x402 payment-request parser with a limited token list. Does not sign, approve or judge payments.
B7.7 🔓 open streamable-http -
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C4.9 🔓 open streamable-http -
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
B+9.1 🔓 open streamable-http -
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C5.5 🔓 open streamable-http -
Payment Reconciliation & Matchinghttps://payment-reconciliation-mcp-microsoft.saifs.ai/mcp● healthy
Match bank receipts and payments to invoices with confidence, deductions and exceptions.
C5.3 🔓 open streamable-http -
Allow, ask, or veto — a policy decision point your agent consults before signing any payment
A9.7 🔓 open streamable-http -
Non-custodial crypto payments: charges, invoices and refunds in BTC, XRP, USDC and more.
C5.3 🔓 open streamable-http -
Paper trading for agent payments: rehearse buying flows, earn policy-bound receipts.
C5.0 🔓 open streamable-http -
Planos, assinaturas, links de pagamento e métricas
C4.1 🔓 open streamable-http -
Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.
A9.7 🔓 open streamable-http -
Pink Agentic AI Payments: AI agents pay within spending rules (budgets, caps, approval). Sandbox.
C+5.9 🔓 open streamable-http -
Cash-on-delivery payment rail for LATAM markets, creating and processing COD orders via Dropi.
C5.3 🔑 human key streamable_http api_key -
Planos, assinaturas, links de pagamento e métricas
C5.0 🔓 open -
x402 agent preflight: exact action authority plus payment mandate, destination, expiry and replay.
B7.8 🔓 open -
Delegare provides secure payments for AI agents. Google AP2-powered payment authorization for AI agents. Issue scoped spending mandates with hard limits, merchant controls, and no exposure of card credentials or private keys. Agents pay across dual rails: cards and ACH via Stripe, or USDC and USDT on Coinbase Base. Supports paid API access and x402-protected requests through MCP.
B7.4 🔑 human key streamable-http smithery_api_key -
Accept stablecoin payments from AI agents. Create payment links and hosted checkout, check payment status, configure webhooks and settlement wallets – USDT and USDC across Ethereum, Arbitrum, BNB Chain, Base, Optimism, Solana and TRON. Non-custodial: funds settle directly to your own wallet.
D3.2 🔑 human key streamable-http smithery_api_key -
Let AI agents add Yolfi crypto checkout, paylinks, webhooks, and status checks.
C4.9 🔓 open streamable-http -
Patsnap Maintain Paymenthttps://server.smithery.ai/openpatsnap/patsnap-maintain-payment/mcp● healthy
Patent search and freedom-to-operate intelligence using query, semantic, image, family, legal-status, and analytics workflows.
C5.0 🔑 human key streamable-http smithery_api_key -
Agent payments ecosystem intelligence. Scans GitHub, Hacker News, and npm for activity across AP2, ACP, x402, MPP, and UCP. Returns scored and classified opportunities. Free protocol info and comparison tools; paid scan via x402 ($0.01 USDC on Base) or MPP (Tempo USDC).
C+7.0 🔑 human key streamable-http smithery_api_key -
Check IBAN, BIC, EU VAT (live VIES), UK VAT, US EIN before an agent pays an invoice. Paid: RapidAPI
C4.6 🔓 open -
Sick of stitched-together services? Anythink is the all-in-one backend, configured with AI.
C5.5 🔓 open streamable-http -
Create payment orders, checkout, subscriptions & UPI via PineLabs Plural PG gateway
C5.0 🔓 open streamable-http -
Paid token risk and security intelligence for AI agents over MCP with x402 payments.
B+9.3 🔓 open streamable-http -
Payments MCP: self-serve merchant key, PayNow + PayPal checkouts.
B8.6 🔓 open streamable-http -
EU payments legislation: PSD2, RTS-SCA, PSD3/PSR, DORA; provisions, definitions and text changes.
B8.6 🔓 open streamable-http -
Paid pre-trade token risk and token security intelligence for AI agents. Token Risk supports Solana and Base; Token Security supports Solana. Payments use x402 USDC with no traditional API key required.
C+7.0 🔑 human key streamable-http smithery_api_key -
Free BIN, issuer, MCC and decline code lookups for card payments (Visa, Mastercard, Stripe, Adyen).
B+9.4 🔓 open streamable-http -
Check fit for PayFresco processing, application readiness, payout cash flow, and currency plans.
C+7.1 🔓 open streamable-http -
Let agents verify the seller and pay Billify invoices with x402 (USDC on Base).
B8.5 🔓 open streamable-http -
Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight
B8.1 🔓 open streamable-http -
CMS Open Payments, with annual dataset discovery through the official DKAN API.
A9.8 🔓 open streamable-http -
Payment decisions, durable evidence, x402 resource discovery and live gateway status for AI agents.
B8.7 🔓 open -
85+ pay-per-call MCP tools: trading, federal grants/contracts, SEC, FTD. x402 USDC/RLUSD. No keys.
B+8.9 🔓 open -
Check before you pay. Prove to get paid. Signed answers on any agent, against your own bar.
B8.2 🔓 open streamable-http -
Stablecoin rails, corridors and payment provider data for agents: cited, dated answers. Paid per call (x402 Base, MPP Tempo). Free search. Information only, not advice.
C+7.0 🔑 human key streamable-http smithery_api_key -
Kaspi QR payments (Kazakhstan) via Qut Pay: create invoices, check status, refund, sandbox tests.
B8.1 🔑 human key streamable-http bearer_api_key -
Cited stablecoin rails, corridors, providers, rail holidays, regulators for agents. x402/MPP paid.
B+9.2 🔓 open streamable-http -
Supplier, company, sanctions, PEP, VAT and IBAN checks for agents. 5 checks a day free, no key.
B7.7 🔓 open streamable-http -
Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.
B+9.1 🔓 open streamable-http -
Signed U.S. CPI data, Base wallet risk, x402 quote checks, and payment preflights for AI agents.
B7.9 🔓 open streamable-http -
uptime_30d 1.0%; p95 315.7ms; conformance: fail
B7.4 🔓 open -
Invoice & Payment ID Validatorhttps://invoice-validator.mohamed-bahaa53000.workers.dev/demo/mcp● healthy
Pay/review/hold verdict for invoice payees: cross-checks IBAN, BIC, VAT, EIN. Paid: RapidAPI
A9.7 🔓 open streamable-http -
USDC x402 proof/DNS and authenticated prepaid OCR, document and audio processing via card or USDC.
B8.0 🔓 open streamable-http -
Put any API behind x402 in one call, settle USDC on Base, buy credits, find paid resources
B+9.0 🔓 open streamable-http -
Remote MCP server for UETR tracking and SWIFT payment tracking. Read bank-reported transfer status and manage monitoring within your plan and team permissions. Connect with OAuth or a uetr.ai API key.
C+7.2 🔑 human key streamable-http oauth -
Accept Pix in Brazil and settle in USDT/USDC; pay Pix with crypto; verify a Pix with no API key.
B+8.9 🔓 open streamable-http -
Agent Discovery For Paymentshttps://server.smithery.ai/sadri/ads-agent-discovery-for-payments/mcp● healthy
Labeled placement in agent discovery indexes, measured with daily HMAC nicknames, for payments (Agent Ads). 7-day free trial, then $100/month. Follow start_here.hop first (302 with utm_source=agent-observatory&utm_medium=agent). Task text discarded.
C+7.0 🔑 human key streamable-http smithery_api_key -
Agent Catalog For Paymentshttps://server.smithery.ai/sadri/ads-agent-catalog-for-payments/mcp● healthy
Machine catalog entry for products that want agent clients: surfaces, hops, discovery paths, for payments (Agent Ads). 7-day free trial, then $100/month. Follow start_here.hop first (302 with utm_source=agent-observatory&utm_medium=agent). Task text discarded.
C+7.0 🔑 human key streamable-http smithery_api_key