21 #micropayments MCP Servers & Clients

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.

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.

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.

MCP Solana Internet: Direct SOL Payments for Content Access

waifuai

Proof-of-concept MCP server integrating Solana blockchain for paid digital resource access via direct SOL payments. Returns solana-action URIs for unsigned transactions with on-chain validation.

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

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

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

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

Tokensafe

ampactor-labs

Quick safety screening for any Solana SPL token. Returns: risk score (0-100), risk level (LOW/MODERATE/HIGH/CRITICAL/EXTREME), human-readable summary, token name/symbol, whether authorities are renounced, trusted_authority (true when active authority belongs to a known issuer lik

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

AI payment router for agents. Route 300+ LLMs via cost/quality/speed/balanced modes, enforce session budgets, and settle per-request in USDC on Base via x402 micropayments. 6 tools: p402_chat, p402_create_session, p402_get_session, p402_list_models, p402_compare_providers, p402_h

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).

Content Classifier

garyedgington

Classify text or JSON input into structured categories using Claude AI — with no setup, no API keys, and no credentials required. Connect directly and start classifying immediately.

NameIntel is a remote MCP server that scores brand names across five dimensions in a single call: domain availability, USPTO trademark conflict screening, social handle availability across 12+ platforms, SEO keyword strength, and AI findability (GEO score — industry-first; measur

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.

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.

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.

B.O.N.S.A.I. (Biologically-driven, Observationally-validated, Nutritionally-tested, Safe, Accessible, Integrative) is a health intelligence API built for the agent economy.

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.