Spraay x402 MCP Server
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- AlicenseNot gradedqualityFmaintenanceConnects AI agents to 2,800+ APIs via x402 micropayments on Base, enabling automated API calls for $0.01 each without signup or API keys.28 npm2MIT

AgentBIT MCP Serverofficial
AlicenseNot gradedqualityDmaintenanceEnables AI agents to call 50+ pay-per-request tools covering onchain and crypto data, web research, security, compliance screening, business intelligence, and infrastructure checks. Payments settle per call in USDC on Base through the x402 protocol with no accounts, API keys, or subscriptions, and the first call is free for new wallets.MIT
com.ausca/agent-servicesofficial
AlicenseNot gradedqualityCmaintenanceEnables AI agents to discover, pay for, and invoke x402-priced services such as document OCR, document analysis, media transcription, remote browser sessions, and receive-only email inboxes using USDC on Base, with no API keys and receipt-backed results.36MIT- FlicenseNot gradedqualityCmaintenanceEnables AI agents to access 25 pay-per-request intelligence APIs using USDC micropayments via the x402 protocol, without API keys or accounts.-
- FlicenseAqualityDmaintenancePay-per-call tools for AI agents including trust checks, due diligence, market data, and human-verified approvals, settled in USDC on Base via the x402 protocol.16-
- AlicenseAqualityAmaintenancePay-per-call data and tools for AI agents over x402, by UnyKorn. 360 endpoints: DeFi and market data, multi-chain wallet reads, wallet and token risk signals, SEC filings, web and domain intel, and AI text tools. Settled per call in USDC on Base ($0.001-$0.25). No API keys or subscriptions; unpaid calls return the exact quote first.221MIT
TDQS
Scored across 162 tools
Many tools have overlapping purposes, e.g., multiple tools for balances (spraay_balances, spraay_analytics_wallet, spraay_portfolio_tokens), AI inference (spraay_chat, spraay_gpu_run, spraay_compute_text_inference), and token prices (spraay_prices, spraay_oracle_prices). Agents would struggle to select the correct tool among these overlapping options.
All tools follow the consistent pattern 'spraay_{category}_{action}', with categories like agent, analytics, compute, research, etc. Subcategories use underscores (e.g., spraay_research_biomedical_search). Minor inconsistency: some action parts are nouns (e.g., spraay_free_chain_status) rather than verbs, but overall pattern is clear and predictable.
With 162 tools, this server is extremely bloated for a single MCP server. While the server covers many domains, a typical well-scoped server has 3-15 tools. This scale makes it unwieldy for agents to navigate and likely includes many rarely-used tools.
The server covers an impressively broad range of functionalities: blockchain (balances, swaps, escrow, bridge, payroll, tax), AI (chat, compute, image gen, research), utilities (storage, webhooks, notifications, RPC), and more. Minor gaps exist (e.g., no wallet withdrawal tool), but the surface is remarkably comprehensive for the stated domain.