"Methods to Test API Endpoints" matching MCP servers:

pay-per-call x402 API endpoints as MCP tools — web search, page-to-markdown, PDF extract, JSON repair/validate, crypto price, weather, IP geo, DNS, markdown lint + 20 agent-commerce aliases. Each tool proxies to vibes-coded.com and settles via x402 (USDC/Solana). Free-trial endpoints need no auth; paid ones need an x402 signature. Catalog is fetched live, so new endpoints appear automatically.

Gives MCP-compatible LLM agents direct access to real-time MEV and DeFi data via Valorem's x402-paid API endpoints, with payments in USDC on Base mainnet.

Enables MCP clients to access all endpoints of an x402 gateway by paying real-time microtransactions (USDC on Base) per API call, with automatic tool discovery and spend guardrails.

Eight crypto and DeFi data tools for AI agents: prices, gas, one ParaSwap route quote, GoPlus token security and top-holder samples, DefiLlama yields, Hyperliquid/dYdX funding, and observed wallet balances. Inspect prices free; pay 0.001–0.008 USDC per call on Base through x402. No API key or subscription.

Blockchain JSON-RPC on 23 EVM chains for AI agents — Ethereum, Base, Arbitrum, plus young chains like Robinhood Chain, Plasma and Ink. Free reads with no key; heavy methods (eth_getLogs, trace, debug) via a free API key or x402 USDC pay-per-call.

Non-custodial crypto swaps for AI agents: Solana (Jupiter) + 7 EVM chains (KyberSwap), 1288+ assets, cross-chain routing, priority-fee oracle, Hyperliquid perps. Returns unsigned transactions — your wallet signs, no API key, no KYC. Hosted at https://swaptitan.net/mcp

Enables access to 86 crypto data endpoints from the Surf API, including market data, wallets, social sentiment, on-chain queries, and more, through dynamically generated MCP tools.

Pre-trade DeFi intelligence for AI agents. 20 paid x402 endpoints, USDC on Base.

MCP server for querying cryptocurrency portfolio data, transaction history, net worth, and historical snapshots across 20+ blockchains via the Octav API.

Provides AI agents with direct liteserver access to the TON blockchain for querying balances, account states, transactions, and contract get-methods without HTTP gateways.

Enables AI assistants to create, look up, list, and cancel crypto invoices, manage reusable payment links, check USDT and TRX rates, and simulate test payments through a secure API.

MCP server exposing fry.farm's x402 API as tools, enabling non-custodial blockchain interactions with pay-per-call endpoints on Algorand.

Exposes 8DX DEX aggregator REST endpoints as tools for AI agents, enabling token discovery, quotes, swaps, limit orders, and wallet execution via WalletConnect.

Enables interaction with the Bitpanda cryptocurrency exchange through their Developer API. Exposes Bitpanda trading and account management endpoints as MCP tools via a FastAPI wrapper.

Enables MCP clients to access exchange rates for 160+ currencies, currency conversion, historical rates, time series, crypto, metal and stock prices, usage checks, and rate alerts.

Provides tools for AI assistants to interact with the Ethereum blockchain through standard JSON-RPC methods, enabling queries for account balances, gas prices, and smart contract code.

A Model Context Protocol implementation for the CoinMarketCap API that provides standardized access to cryptocurrency market data, exchange information, and blockchain metrics.

Enables agents to access live DeFi, social intelligence, risk, and API documentation tools with a caller-supplied API key.

Free DEX aggregator API that returns executable swap calldata across 46 EVM chains. No API key required. Single GET request returns ready-to-sign transactions for any token pair.

Exposes the full Gate API v4 to MCP clients with 384 tools for spot, futures, margin, wallet, and more. Supports both public endpoints (no auth) and authenticated trading operations.

Enables AI agents to autonomously pay for and discover services using HPP USDC.e over the x402 protocol, without API keys or manual signing.

Provides access to NFTGo's Developer API for retrieving NFT collection details, asset information, market data, wallet information, and search capabilities on the Ethereum blockchain.

MCP server providing 50+ crypto, market intelligence, and AI inference endpoints with x402 pay-per-request micropayments on Base.

Enables AI agents to query live Solana wallet token holdings, native SOL balances, transaction history, transaction details, and SPL token mint top holders through keyless public endpoints.

MCP server for verifying agent payment integrity on x402, providing tools to check payTo mismatches, market stats, and lookup endpoints.

Enforces pre-trade planning discipline by checking entry, stop, target, and risk/reward via a gate tool, and provides proof receipts, terminal links, and risk prompts for AI assistants.

Bitcoin data for AI agents. Pay-per-query via x402 micropayments. No API keys. No subscriptions. No tokens.

just a simple test for education

Provides comprehensive integration with the Maiga API for cryptocurrency analysis, including token technicals, social sentiment tracking, and KOL insights. It enables AI assistants to retrieve market reports, trending token data, and detailed on-chain information.

Provides 27 tools for interacting with the Binance Thailand (Gulf Binance) API, enabling market data, trading, order management, wallet operations, and account management through natural language.