"OpenAI's Web Retrieval Infrastructure" matching MCP servers:

Native Solana staking infrastructure for AI agents. 18 MCP tools for staking, unstaking, validator info, APY, epoch timing, and more. Zero custody — unsigned transactions, agents sign client-side.

⚡ 87% Token-compressed clean web scraping, YouTube AI transcripts, and PDF extraction for LLMs. Instant Free Trial with zero setup (No wallet/crypto required). Supports gasless agent vaults and EIP-712 on-chain oracle verification on Polygon, Base & Arbitrum.

MCP server for the Twelve Permissions NFT collection, enabling verification of seals, retrieval of piece metadata and buy transactions, x402 payment info, and the refusals ledger.

Enables listing and discovery of DePIN infrastructure capacity (storage, compute, GPU, etc.) with real USDC/USDT settlement across multiple chains.

MCP server for self-custodial wallet infrastructure, enabling secure key generation, Shamir secret sharing, signing, and recovery without exposing private keys to LLMs.

Trust infrastructure for AI agents on Base. DEX Spread Oracle (live Uniswap V3 prices), on-chain escrow, insurance pool, and collective knowledge base. 7 smart contracts. Pay-per-query via x402 micropayments in USDC.

An MCP server that provides real-time web search to AI agents via a pay-per-search USDC microtransaction system.

Provides access to Lightning FM's music catalog, allowing agents to search tracks, look up artists, and check the currently playing track and stream URL via public Nostr and Blossom infrastructure.

Enables interaction with CoW Protocol's order book API, allowing token resolution, quote retrieval, and order management across multiple networks through natural language.

MCP server enabling AI agents to perform cross-chain token swaps through NEAR's intent-based architecture using the Defuse Protocol, with token discovery, quote retrieval, swap execution, and status tracking.

Enables Web3-focused web searches via the OptimAI External Search API, providing tools to start, retrieve, list, and cancel searches from any MCP-compatible AI host.

Provides a pay-per-query web search tool for AI agents via Lightning Network sats, enabling no-KYC, account-free searches through the MCP protocol.

Trust infrastructure for the machine economy. Gives AI agents non-custodial smart accounts (ERC-4337), x402 payments, on-chain reputation via ERC-8004 trust registry, and service discovery. 8 tools: create accounts, transfer, check balances, pay for x402 services, publish/discover services, manage payment agreements, and send encrypted messages.

Provides pay-per-use tools for AI agents like web screenshots and crypto intelligence using automatic USDC micropayments on the Base network. It simplifies access to premium APIs by handling blockchain transactions automatically when a payment is required.

Identity infrastructure for the agent economy. Mint an agent ~handle in two free calls with no human account, then verify anyone and read inferred traits under the consent the person set in advance.

Enables retrieval of token details (name, symbol, standard, decimals, totalSupply) by contract address for EVM and Solana blockchains via the Crypto APIs.

Provides Solana infrastructure awareness including RPC health, priority fee estimation, leader schedule, chain state, latency comparison, and keyless transaction submission.

Provides tools for AI agents to access Bitcoin, Lightning Network, and Nostr knowledge, including real-time network statistics and Web of Trust reputation data. It features an integrated Lightning Network payment system for micro-transactions and query-based interactions.

19 pay-per-call APIs for AI agents via x402 USDC micropayments on Base — prediction markets (Polymarket, Kalshi), DeFi/crypto data, multi-chain on-chain reads across 5 EVM chains, live weather, and real-time web search. No API key or signup — from $0.001/call. npx -y microtap-mcp

Provides permissionless wallet infrastructure for AI agents to manage wallets, sign transactions, and handle tokens across Solana and all EVM-compatible chains. It includes 29 specialized tools for on-chain operations, featuring built-in security guards and automated x402 payment processing without KYC requirements.