"A clean web agent named x402-cleanweb-agent" matching MCP connectors:

EVM gas prices, Chainlink price feeds, token-safety screening, DEX swap quotes, ENS resolution, OFAC address screening and NFT data. Pay-per-call in USDC on Base via x402 — no signup, no API keys.

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.

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

See what actually settles on x402: wash-adjusted volume, payTo checks. Free, no key, no signup.

Mocap, rehab biomechanics, threat intel, fleet vision. 21 MCP tools, 10 free. x402/USDC paid.

Search scored onchain agent frameworks, MCPs, wallets, tools, and live agents.

Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual

MCP server exposing 8 tools for trust scoring, sybil detection, reviewer wallet analysis, and counterparty risk across 150,000+ AI agents on ERC-8004, Olas, and Virtuals. Streamable HTTP, JSON-RPC 2.0, no API key required.

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

Twelve tools: token, wallet, contract and site security. Two free, the rest $1 in USDC over x402.

Base mainnet analysis: contract audits, transfer simulation, token pricing. Paid via x402.

Abstraxn: public Web3 MCP server for read-only chain data and pay-per-call relays.

Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

The honest trust index for x402: check who you're paying before your agent pays.

x402 MCP get-paid path: USDC, spend caps, AUP, $49 kit. CAPTCHA/web-unlock for payment-ready agents.

AI price forecasts, whale flows, market sentiment and prediction signals. 18 tools free, no account.

Paid x402 MCP utilities for Base-USDC balances, blocks, gas, HTTPS headers, and agent profile bios.

Reputation oracle for AI agents on Base: SAFE/CAUTION/BLOCK + 0-100 score before you pay. x402+MCP

Verify live jobs/RFPs, deadlines, eligibility, terms changes, and Base/web data via x402.