60 # x402 MCP Servers & Clients

x402-list-mcp

mcccsm

MCP server for x402-list.com: discover x402 payment services and on-chain-verified facilitator settlement volumes. Published on npm as x402-list-mcp.

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

MangroveAI

MangroveTechnologies

Mangrove gives trading agents guardrails. Built-in risk management on every order: circuit breakers, drawdown limits, automatic risk-based position sizing and automatically generated stop-loss and take-profit orders. Ove

Agirails MCP Server

agirails

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

Priors

priors-agents

On-chain credit pool for ERC-8004 AI agents on Robinhood Chain: agents borrow USDG, repay it and earn a public credit score. Contracts, SDK, CLI, MCP server (@priors/mcp), x402 helpers (@priors/x402) and an agent skill.

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.

scvd.store

seancrecord

scvd.store is an evidence observatory for agentic commerce. Independent signed observation of what other people's endpoints, artifacts and payments actually did among other things. USDC on Base, Arbitrum One, World Chain

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

X402mail - Email API with crypto micropayments

MuzsaiLajos

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

PincerPay

ds1

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

Madeonsol — Solana Kol & Memecoin Intelligence

LamboPoewert

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

Code Quality Scanner

luxemarasound-stack

x402 on demand micro services

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.

X402 Mcp

x402node

MCP server bringing 100+ x402-paid APIs to AI agents. Auto-syncs from CDP Bazaar. Stablecoin micropayments via x402 protocol across multi-chain (Base, Solana, Polygon, BNB, EVM). Built for agentic commerce: developer utilities, validators, encoders, generators, M2M payments, auto

~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.

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.

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: no accounts, no API keys, no subscriptions. Buy from the live catalog, or list your

NodusAI MCP Server — Prediction Market Signals

NodusAI-Your-Prediction-Broker

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

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.

Intelica

teodorofodocrispin-cmyk

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

Askew X402

rubix1138

MCP wrapper for Askew's x402 endpoints — 8 tools (3 free, 5 paid in USDC on Base): live DeFi yield comparison, SOL/ATOM staking routing, agent-economy research search, Guardian security threat intel, and a combined strategic feed.

Oromi Agent Services

Oromi

All 25 agents.oromi.co.uk pay-per-call tools in any MCP client (Claude Desktop, Claude Code, Cursor). UK company data, property market data, verification tools, statutory rates. Tools auto-generate from the live OpenAPI

x402 micropayment API for AI agents. Detects technologies used by websites. Pay per call with USDC on Base.

Signal Feed API: market regime

DinevDecor

Daily market-regime context for trading agents: is the market risk-on or risk-off? Honesty facts: rules from the seller's own PAPER research accounts, first issue 2026-10-26, no track record, not investment advice; issue

x402 micropayment API for AI agents. Generate QR codes from text or URL. Returns base64 PNG. Pay per call with USDC on Base.

x402 micropayment API for AI agents. Gets Solana DEX quotes via Jupiter aggregator. Pay per call with USDC on Base.

Web Scraper X402

Br0ski777

Extract clean markdown from any URL. Strips nav/ads/scripts, returns structured content. Built for RAG pipelines and AI research agents. -- x402 micropayment API + MCP server for AI agents

Real-time financial data for AI agents. Stock quotes, company fundamentals, 800,000+ FRED economic indicators, SEC filings, and crypto prices. Pay-per-call ($0.01) via x402 micropayments on Base — no signup or API keys needed.

Remote MCP server for geographic data — earthquakes, tsunamis, volcanoes, hurricanes, floods, tornadoes, FX rates, UN SDG, World Factbook, WorldPop. Free discovery + free packs; earthquakes & tsunamis paid via x402 on Base USDC. Start with get_catalog, then get_pack.

Production MCP server with 9 financial and web tools — live on Google Cloud Run. Free tools include live FX rates, crypto prices, financial calculations, real-time news headlines, and URL reading. Paid tools (API key required) cover stock quotes, open banking transactions, and St

Token Safety X402

Br0ski777

Token contract safety scanner (honeypot, tax, proxy, blacklist, risk score) -- x402 micropayment API + MCP server for AI agents

x402 micropayment API for AI agents. Shorten URLs with custom aliases. Hash-based short codes. Pay per call with USDC on Base.

ToolOracle — AI Agent Tool Infrastructure & Trust Runtime

ToolOracle

86 self-hosted MCP servers with 989 tools across 7 categories. Complete Agent Trust Runtime: identity (KYA), policy enforcement (258 rules), fraud detection (DetectiveOracle), self-healing support (SupportOracle), and signed Trust Passports. x402 USDC micropayments. Built for aut

Hsh Data On Demand

hshintelligence

Pay-per-call live company intelligence for AI agents via x402 (USDC on Base). No signup, no API key — name a company, get fresh data instantly.

Pythia The Oracle

eyloni

An oracle for machines that need to think sideways. Feed it a creative problem; it returns something you can't quite explain but can't stop using. Three free consultations.

Provision, SSH into, run commands on, and manage Linux VPSes from an AI agent. Pay USDC over x402 (Base) or by card over HTTP 402, with a running box in under 60 seconds. No signup, no API key to buy. Includes get_catalog, provision_server, get_server, list_servers, extend_server

Omnicall

ColinHughes2121

Omnicall is a keyless, pay-per-call AI gateway for agents and OpenClaw. One OpenAI-compatible endpoint gives access to 248 LLMs (GPT, Claude, Gemini, Grok, DeepSeek, Llama, Qwen, Mistral) plus image, video, voice and music generation, and live crypto, DeFi, markets, web-search an

x402 micropayment API for AI agents. Monitors Solana liquidity pools. Pay per call with USDC on Base.

Skim

JessieJanie

x402-native clean reader. URL in → markdown out. $0.002/call, no signup.

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.

Sovereign cryptographic oracle — 131 Ed25519-signed endpoints across crypto prices, FX, metals, stablecoins, economic indicators, commodities, gas oracles, volatility/sentiment/stress/contagion indices, marine, weather, DeFi yield, and COT positioning. Pay-per-query via x402 (USD

patternfetch — Market-State Briefs for AI Trading Agents

MarvinRey7879

patternfetch — token-compact market-state briefs for AI trading agents. One call: compact candles + patterns + support/resistance + regime + interpreted indicators. MCP + REST, x402 + Stripe. github.com/MarvinRey7879/patternfetch-client

Hl Vaults X402

Br0ski777

Hyperliquid vault summaries — APR, TVL, PnL, followers. -- x402 micropayment API + MCP server for AI agents

IRONCLAW BTC Node

cariohca-ux

Bitcoin blockchain data server for AI agents — 17 tools (fees, mempool, transactions, address portfolio, trace, whales, SEC insider trades, web scraping, AI summarization, systems theory, game theory, capital flows, Reddit). x402 USDC micropayments on Base. No API keys needed.

X402 A2a Hub

garyedgington

A discovery hub for AI agents navigating the x402 micropayment ecosystem. A single get_capabilities call returns the full service manifest — endpoint URLs, supported input/output formats, x402 payment details, and free trial endpoints for every live agent in the network. Use this

The first Model Context Protocol server that lets AI agents browse, recommend, compare, and BUY real physical products with USDC stablecoin via the x402 protocol.

402 Arcade is the first arcade for AI agents. Six paid micro-services ($1 USDC each on Base) designed purely for

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

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.

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

Hermes Plant — Agent Commerce Assurance

JesseGdotIO

Preflight risk, route approvals, enforce spend policy, and prove consequential agent actions with signed evidence over MCP and x402.

Real-time supplier verification for AI agents