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.

Payflow

chainbound

A toolkit for building micropayment-gated MCP servers

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.

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

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

Orbis Travel Mcp

OrbisAPI

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

IBANforge

cammac-creator

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

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

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.

Storyflo

Alisammour

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

Intelica

teodorofodocrispin-cmyk

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

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.

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

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.

~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.

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

Code Quality Scanner

luxemarasound-stack

x402 on demand micro services

Madeonsol — Solana Kol & Memecoin Intelligence

LamboPoewert

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

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.

Canonical travel-agent MCP server for Glama and MCP clients with FREE category discovery, creator experiences, day-trip and weekend planning, transit options, airport comparisons, timing advice, coverage requests, and x402 trip price guidance.

Korean crypto market data + AI analysis for trading agents. 7 tools: AI market read ($0.10, 9 data sources + Claude AI signal), Kimchi Premium, stablecoin premium, Upbit/Bithumb prices, USD/KRW FX rate. Pay-per-use via x402 on Base/Solana.

AINumbers Fintech Intelligence Suite

PostOakLabs

420+ deterministic fintech tools - agentic payments (AP2, x402, Visa TAP, A2A), AML/KYC, BaaS comparison, MCP dev tooling - with 15 flagship tools as interactive MCP Apps widgets. Remote streamable HTTP, read-only, no auth, zero PII.

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

Sms Validator X402

Br0ski777

Validate SMS-capable phone numbers -- mobile vs landline detection, carrier type, E.164 format, SMS readiness. -- x402 micropayment API + MCP server for AI agents

Sphere Marketplace

dtajitdinov-aris

Sphere is an exchange where AI agents list services and post requests for other agents. Registration is one request, free, with no human approval. The first order is free: sphere_receipt_trial, one per agent per 24 hours

Agent Margin Router

NovaNest

Remote MCP server with 40 AI agent tools for web search, scraping, research, crypto market data and on-chain analytics. Access 38 data endpoints via Streamable HTTP. Start with 3 free calls per wallet, then pay $0.005–$0

Synmerco — Trust Infrastructure For Ai Agent Commerce

synmerco

46 MCP tools for AI agent commerce. Escrow with $1K Shield Protection, on-chain reputation (ERC-8004), semantic agent search, confidential escrow (HIPAA/GDPR), dispute resolution, multi-agent orchestration, protocol gateway (A2A/MCP/REST/x402). Agents transact autonomously — no h

Nft Floor X402

Br0ski777

NFT collection floor price, volume, holders, rarity data. Ethereum and Base via Reservoir. -- x402 micropayment API + MCP server for AI agents

Runtime security oracle for AI agents — scan prompts, tool calls, and outputs before execution. Pay-per-call via x402/USDC, no accounts needed.

Validate AI claims against live data: check endpoints, count competitors, test hypotheses.

Schemacheck Agent

garyedgington

SchemaCheck Agent validates JSON payloads against JSON Schema Draft 7 and 2020-12 standards. Designed for agent-to-agent workflows, it returns structured validation results instantly — including field-level error paths, human-readable summaries, and optionally a corrected payload

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

x402 Discovery Hub. Search engine for the agent economy with 1450+ services indexed. Search by keyword, browse by category, free service submission.

Email Deliverability X402

Br0ski777

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

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

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.

AI agent knowledge marketplace. Discover, purchase, and retrieve human expertise via x402 on Solana. Tools: km_search, km_get_detail, km_purchase, km_get_content, km_publish.

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

x402 micropayment API for AI agents. Base chain DeFi analytics and data. Pay per call with USDC on Base.

MCP server for 402 Index: discover 15,000+ paid API endpoints across the L402, x402, and MPP protocols

x402 micropayment API for AI agents. Extract text from images using OCR. Supports URL or base64 input. Pay per call with USDC on Base.

Pay-per-use data and tools for AI agents: crypto token safety and rug checks, web search with cited answers, page-to-Markdown, up-to-date library docs, package safety, company research and UK/EU open data. 160 tools, 20

Gdpr Scanner X402

Br0ski777

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

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).

Deaddrop

jerrywrongalot-byte

MCP server: AI agents share self-destructing one-time secrets via DeadDrop - zero-knowledge, paid per call in USDC over x402 on Base

Cryptoiz Mcp

dadang11

v4.16.0 - AI-powered Solana DEX whale intelligence for Claude Desktop. 9 tools: whale alpha scanner, divergence scanner, accumulation/neutral/distribution phase scanners, BTC macro regime monitor, and NEW BTC Futures Signal (4H+5m multi-timeframe scalping). Pay-per-call via x402

Xrpl Utilities

XRPL-Utilities

MCP server for the XRPL-Utilities portfolio. 11 tools across four services:

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.

x402 micropayment API for AI agents. Fact-check claims by searching multiple web sources. Pay per call with USDC on Base.

Signal Nodus SEC Filings

Signal Nodus

Primary-source SEC intelligence for AI agents, delivered over MCP. 27 tools: year-over-year filing diffs, 8-K material events, 13D/13G activist stakes, insider Form 4 trades, 13F institutional holdings, IPO pipeline, ful

Aifais Document Intelligence

AIFAIS

Headless document processing for AI agents. Invoice extraction, contract analysis, and Dutch business verification. Pay-per-use via X402 on Solana. No API keys needed.