60 #x402 MCP Servers & Clients

Run402

MajorTal

MCP server for Run402 — AI-native Postgres + REST + auth + storage + static sites. Pay with x402 USDC on Base. No signups.

APIbase — The API Hub for AI Agents

whiteknightonhorse

Universal MCP gateway for AI agents — 1108 tools, 307 providers. One endpoint (https://apibase.pro/mcp), pay-per-call with x402 USDC on Base + MPP USDC on Tempo.

Apimesh

mbeato

APIMesh — 23 pay-per-call web analysis APIs + 16-tool MCP server with autonomous API generation. Security audits, SEO, tech stack detection. x402 + Stripe MPP payments.

Payflow

chainbound

A toolkit for building micropayment-gated MCP servers

Agirails MCP Server

agirails

MCP server for AGIRAILS — agent payments, discovery, escrow, and settlement from any AI context window

IBANforge

cammac-creator

IBANforge — IBAN validation, BIC/SWIFT lookup, Swiss clearing, and EMI/vIBAN classification API with MCP for AI agents

Orbis Travel Mcp

OrbisAPI

500+ travel APIs for AI agents — flights, hotels, destinations. Pay per call with USDC via x402.

Storyflo

Alisammour

Official Storyflo MCP server — install + discovery reference. The Storyflo platform is proprietary; this repo is the public agent integration surface.

Pqs Prompt Quality Score

OnChainAIIntel

The world's first named AI prompt quality score. Score any LLM prompt before it hits any model — returns grade (A-F), score out of 40, percentile, and dimension breakdown across 8 quality dimensions.

x402search — Pay-Per-Search API Discovery for AI Agents

x402-index

Search 13,000+ x402-enabled APIs from your AI agent. Powered by x402search.xyz

scvd.store

seancrecord

The trust layer of the x402 economy. Free conformance checking for any issuer's x402 signed offers and receipts. Settlement attestation on Base and Solana. Weekly signed, Bitcoin-anchored ecosystem corpus.

PincerPay

ds1

On-chain USDC payment gateway for AI agents. x402 protocol.

Code Quality Scanner

luxemarasound-stack

x402 on demand micro services

~Alter Identity

true-alter

The identity layer for AI agents. Verify a person is known to the ~Alter field, query inferred traits, and settle premium calls in USDC; your identity earns. @truealter/sdk, Apache-2.0.

X402mail - Email API with crypto micropayments

MuzsaiLajos

Python SDK for x402mail - send and receive email with USDC micropayments

FiatDock

fiatdock

A marketplace where AI agents discover and pay each other per call in USDC over x402 - settlement goes DIRECTLY to the seller's wallet, so there are no accounts, no API keys and no subscriptions. Buy from 24 live MCP ser

NodusAI MCP Server — Prediction Market Signals

NodusAI-Your-Prediction-Broker

AI-Powered Signals for Prediction Markets — accessible to any AI agent via MCP.

Xenarch — X402 Mcp Server For Ai Agent Payments

xenarch-ai

x402 MCP server for AI agent payments. Gasless USDC micropayments on Base L2. Claude, Cursor, LangChain, CrewAI, AutoGen, LangGraph resolve HTTP 402 with no API keys. Non-custodial, settlement-provider-agnostic, 0% fee.

Intelica

teodorofodocrispin-cmyk

Competitive intelligence API for autonomous AI agents — pay-per-call via x402 on Base and Solana

Madeonsol — Solana Kol & Memecoin Intelligence

LamboPoewert

MCP server for MadeOnSol Solana KOL intelligence — use from Claude, Cursor, or any MCP client

Gatefare — paid-API marketplace

gatefareio

MCP server for Gatefare — discover, buy, and publish paid APIs (x402 over USDC on Base) from Claude, Cursor, and any AI agent.

GoldBean - Baidu AI API Marketplace with x402 Micropayments

wuzenghai616-lang

Baidu AI for AI agents — OCR, TTS, LLM. 47 endpoints (26 paid + 21 free). No API key. Pay per call with USDC.

Precision calculators for AI agents (medical, finance, engineering, tax, physics). Pay-per-call in USDC via x402 on Base. No API keys.

Agentbodega Mcp

agentbodegastore

AgentBodega MCP gives agents a free discovery and handoff layer for AgentBodega's paid x402 HTTP resources. Agents can search available services, compare endpoint prices, inspect accepted and required inputs, review output examples, and generate curl/JavaScript call snippets. Pai

Piprail

piprail

Hand any AI agent a budget-capped wallet to pay, discover & register x402 payment-gated URLs across every chain. Local, self-custodial, no backend, no fee.

Verifiable document intelligence for AI agents. Extract, summarize, translate, claim-check, and notarize PDFs & URLs. Evidence bundles with cryptographic proofs and on-chain attestation. 20 MCP tools.

X402 Trust Scores

JonasFuchss

x402-trust gives AI agents a "check before you pay" layer for the x402 ecosystem.

DeskCrew

webmilmind1

Agent-native helpdesk. AI agents operate a support desk over MCP and **pay per action in USDC via x402** (HTTP 402) — no account, no API key. Reads (KB/changelog search) are free; write/AI tools are **$0.02–$0.06** per call, settled across Base, Polygon, Avalanche, Sei, and Solan

Apiosk MCP

obcraft

Official MCP server for discovering, paying for, and publishing APIs through the Apiosk gateway. AI agents can browse the API catalog, execute any listing through a uniform contract or API-specific tools, and settle paid calls automatically over USDC (x402 on Base), no manual pay

9 autonomous crypto intelligence tools paid via x402 USDC on Base. Whale alerts, DeFi yields, GODMODE agents ($25-$500), narrative detection, liquidation prediction and more. Any AI agent can discover and pay autonomously.

MarketNow — Trust Layer for Agent Commerce (MCP Marketplace)

edgarfloresguerra2011-a11y

The trust layer for agent commerce. 8,560 MCP-compatible skills with Sentinel L2 security audits, x402 payments (HTTP 402 + USDC on Base), and AP2 delegated mandates with human-in-the-loop by default.

Email Finder X402

Br0ski777

Find professional email addresses from name + company domain. Tests 15+ patterns against MX records with confidence scoring. -- x402 micropayment API + MCP server for AI agents

Airdrop Checker X402

Br0ski777

Check wallet eligibility for active crypto airdrops -- token, value, deadline, claim URL via Etherscan. -- x402 micropayment API + MCP server for AI agents

x402 micropayment API for AI agents. Tracks perpetual futures funding rates. Pay per call with USDC on Base.

x402 micropayment API for AI agents. Fetches Hyperliquid exchange market data. Pay per call with USDC on Base.

x402 micropayment API for AI agents. Detects the language of any text. Pay per call with USDC on Base.

x402 micropayment API for AI agents. Domain WHOIS and intelligence lookup. Pay per call with USDC on Base.

Hyperd Mcp

hyperd-ai

Pre-trade DeFi intelligence for AI agents on Base. 20 paid x402 endpoints - wallet risk, token security, cross-protocol liquidation health (Aave V3 / Compound v3 / Spark / Morpho), portfolio P&L, DEX quote aggregation, governance LLM summaries, sentiment, and a multi-call bundle

The MCP server that lets your AI agent pay for APIs safely. Human-approval mode, on-chain spend caps, full audit trail. 23 tools for payments, wallet management, DeFi, and identity. Works with Claude, Cursor, Windsurf, and any MCP client.

Pdf Generator X402

Br0ski777

Generate PDF documents from HTML or Markdown. Custom page size, margins, headers. Ideal for reports and invoices. -- x402 micropayment API + MCP server for AI agents

fomox402 broker + MCP server for last-bidder-wins games on Solana. Drop one URL into Claude / Cursor / Goose / Cline and the agent auto-registers a Privy-managed Solana wallet (faucet-funded with ~0.0024 SOL + $fomox402), bids via x402 micropayments, claims dividends, and plays a

Tensorfeed X402 Base Mcp

RipperMercs

Read-only Base mainnet chain reader for x402 payment verification. Confirms on-chain that a USDC settlement matches a claimed x402 receipt (recipient and amount), parses publisher /.well-known/x402 manifests, and lists recent USDC payments to an address. No private keys, verifica

Code Sandbox X402

Br0ski777

Execute Python, JavaScript, or SQL in a sandbox. Get stdout, execution time, errors. 10s timeout. -- x402 micropayment API + MCP server for AI agents

x402 micropayment API for AI agents. Tracks new token launches on Solana. Pay per call with USDC on Base.

100+ agent-payable C-suite expertises (competitive intel, SEC

x402 micropayment API for AI agents. Classifies text into categories. Pay per call with USDC on Base.

Universal product search across 40+ stores (Amazon 22 countries, eBay 22 countries, Awin 15k merchants, AliExpress, SaaS, B2B) — 52 languages, x402 micropayments.

A wallet for your agents to onboard and pay. Agentic MPP / x402 payments from your machine - CLI + MCP server.

Agent Ready

mlava

AI agent readability scanner — score any public URL against the Vercel Agent Readability Spec, llmstxt.org, and 6 agent-protocol manifests (MCP, A2A, agents.json, agent-permissions, UCP, x402). 59 checks with per-check fix guidance. Same engine as agent-ready.dev.

MCP server providing 9 security intelligence tools for AI agents. Real-time threat detection with pay-per-request USDC micropayments via x402 protocol. Free tier included (3 calls/day, no account needed).

Email Deliverability X402

Br0ski777

Audit email domain deliverability: SPF, DKIM, DMARC, MX records, score 0-100. -- x402 micropayment API + MCP server for AI agents

Real-time X/Twitter sentiment intelligence API for AI agents via Grok API + x_search. Automate Social Arbitrage: spot cultural trend shifts, narrative velocity, and contrarian signals BEFORE Wall Street. Returns structured JSON with sentiment scores, narrative velocity, top narra

x402 micropayment API for AI agents. Tests and inspects webhook payloads. Pay per call with USDC on Base.

Gadgethumans Mcp

scotia1973-bot

The A2A x402 Extension brings cryptocurrency payments to the Agent-to-Agent (A2A) protocol, enabling agents to monetize their services through on-chain payments. This extension revives the spirit of HTTP 402 "Payment Required" for the decentralized agent ecosystem.

33 utility APIs for AI agents — image generation, web scraping, crypto analysis, code review, OCR, TTS & more. Remote MCP server with Streamable HTTP. Pay-per-request via x402 micropayments. One wallet, zero API keys.

Get AI-powered IT certification practice questions via MCP. Supports 50+ certs (AWS, CompTIA, Cisco, Azure, GCP). Uses x402 HTTP micropayments (~$0.01 USDC per request) on Base network — no subscription needed. Pass an optional API key to skip payment. Built on Supabase Edge Func

51 AI-powered Intelligence verticals - finance, immigration, legal, health, crypto, real estate, careers, travel, compliance and more. x402-native, pay-per-query via USDC on Base. No API keys, no subscriptions.