"An incomplete or malformed search query" matching MCP connectors:

~Alter is the identity layer agents query before they transact, answering who is actually on the other end. 11 of the 42 tools work with no account and no key. Call them now and see what comes back. Two calls plus a small proof of work gives your agent its own ~handle. Reads settle in USDC over x402 and 75% goes to the person read. Being known.

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

Use MCP 2026-07-28 discovery or 2025-11-25 initialize to list and execute PubFi routes.

Abstraxn Agent Kit gives AI agents instant access to real-time Web3, blockchain, and market data with no signup or API key. Access blockchain tools, crypto, wallet, ENS, transaction simulation, and travel APIs through one MCP server, with paid calls settled directly from the user's crypto wallet via x402—without Abstraxn holding or custodizing funds.

Pre-transaction token risk checks for autonomous agents. Read-only; never signs or moves funds. Paid per call in USDC via x402. Supporting Base, Solana, Ethereum, Arbitrum, BSC and HyperEVM

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

Search 38 npm publish/EOTP, GitHub Actions, MCP, Windows and Base fixes; 12 free, USDC/ETH packs.

Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.

Rent verified subdomains by the hour, day, or month. Free 24h trials, x402 USDC on Base.

Real-time curated crypto news for AI agents with sentiment, recaps, and search.

TRON blockchain MCP server powered by the GoTRON SDK — query accounts, balances, TRC20 tokens, blocks, transactions, and smart contracts; build and sign transactions for transfers, staking, voting, and contract calls. Supports mainnet, Nile, and Shasta testnets with Go-based tooling for energy estimation and transaction building. Available via stdio or hosted Streamable HTTP

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

Cash out an AI agent's USDC to a real bank account (non-custodial). Plus Base data + a marketplace

Verified merchants accepting agentic payments on Lightning/L402/BOLT12/USDT — search, verify, pay.

Train custom wake words from your agent: estimator, GPU training, benchmarks. Card or crypto.

Search and invoke real AI capabilities on modelmarket.dev. Free trial, then USDC on Base.

Non-custodial USDC checkout on Solana for AI agents and humans. Six tools inspect a public checkout, prepare one-time or recurring payments under a hard USDC ceiling, and read payment or subscription status, always returning unsigned transactions for the caller's own wallet to sign so Rendben never holds funds or keys.

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

Issue and top up x402 virtual cards or buy Freeland travel eSIMs with Base USDC.