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

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.

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.

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

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

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

PincerPay

ds1

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

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.

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

Code Quality Scanner

luxemarasound-stack

x402 on demand micro services

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

~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.

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.

X402mail - Email API with crypto micropayments

MuzsaiLajos

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

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.

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

x402 Trust

x402 Trust

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

Trust scoring, scam detection, and EAS attestations for ERC-8004 + x402 agents on Base.

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 micropayment API for AI agents. Generate images from text prompts using Google Gemini. Pay per call with USDC on Base.

Agentictrade

JudyaiLab

AI agent API marketplace — discover, call, and pay for services with USDC. 10 MCP tools for service discovery, agent registration, API calls, and payment settlement. 23 active services from independent providers.

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

Agent402

MikeyPetrillo

Open-source MCP server with ~1,100 deterministic tools — web search, headless Chromium, PDFs, OCR, images, ~1,040 CPU utilities. Free to self-host or pay per call via x402 (USDC on Base).

Gdpr Scanner X402

Br0ski777

Scan website GDPR compliance: cookie consent, privacy policy, trackers. Score 0-100. -- x402 micropayment API + MCP server for AI agents

cp0x MCP

cp0x

Read-only MCP server over cp0x public data: referral deals and codes, trading races, a monitor of DeFi interface geo-restrictions, x402 catalogs, and facts about cp0x.

GoCreative — Compliance & Regulated-Data API

ColinHughes2121

GoCreative is a keyless, pay-per-call compliance & regulated-data API for AI agents. OFAC crypto-wallet screening, sanctions/PEP/watchlist screening, KYB business verification, entity risk and vendor dossiers, plus SEC EDGAR filings, FRED economics, FDA recalls and federal contra

Pay-per-query digital nomad intelligence for AI agents. Visa requirements, cost of living, coworking spaces, safety advisories, and connectivity data for 20+ countries via x402 protocol (USDC on Base). No API keys needed — payment is the authentication.

Institutional AI market intelligence for autonomous agents. Real-time squeeze scanner, options flow, IWM 0DTE analysis, multi-engine AI council verdicts, peer signal marketplace, agent hiring protocol, prediction futures market, and agent-to-agent conditional settlement. Pay-per-

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.

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.

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.

Groundcheck

beepboop2025

The grounding check agents run before they answer: verdicts with confidence scores and cited sources.

Email Deliverability X402

Br0ski777

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

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

Tensorfeed MCP Server

RipperMercs

MCP server for AI industry intelligence: real-time AI news, service status, model pricing, and 15 paid premium tools (routing, news search, history series, cost projection, forecasting, provider deep-dive, model comparison, webhook watches). Pay-per-call in USDC on Base mainnet,

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

Know what the market is actually doing — not just price. Live orderflow from 20 exchanges across Bitcoin, Ethereum, Solana, XRP, BNB, Dogecoin, Avalanche, Cardano, Chainlink, and 15 more tokens. Directional regime detection, 7 years of OHLCV with orderflow baked in, on-chain addr

402.bot Discovery Oracle

sam00101011

Read-only remote MCP server for discovering live agent APIs, searching ranked endpoints by capability and network, and inspecting trust and x402 payment telemetry.

MoltPe

umangbuilds

AI-native payment infrastructure that gives AI agents isolated wallets with programmable spending policies for autonomous USDC stablecoin transactions. 11 MCP tools for Claude Desktop, Cursor, and Windsurf. Tri-rail support: x402 (HTTP-native micropayments), MPP (session-based st

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.

Invinoveritas

babyblueviper1

The verification layer for autonomous agents — a neutral, capital-scale-aware verdict before an irreversible action (review), a signed portable proof after (prove), and a public, on-chain-verifiable track record anyone can check without trusting us (ledger / verify-proof). Pay-pe

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.

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

X402 Trust Layer

mimranchohan

x402 Trust Layer is the trust, security & settlement control plane for autonomous agent payments. It exposes 13 MCP tools that an agent calls around every x402 (HTTP 402) payment:

Twosio

2s-io

575+ pay-per-call tools for AI agents: ground-truth data, AI gateway, and agent infra. x402 USDC, no keys, upto usage billing.

AnchorRegistry

AnchorRegistry

AnchorRegistry is the open provenance layer for the agentic economy. Every digital artifact — code, research, data, models, media, agents, transactions — can be anchored to Base L2 with a permanent, machine-resolvable identifier (an AR-ID). When an AI assistant encounters an SPDX

Agent Embassy

noot XLM

Agents pay for work and prove what happened.

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.

x402 micropayment API for AI agents. Generate research reports by fetching and summarizing web sources. Pay per call with USDC on Base.