"Fetching historical data from tardis.dev" 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.

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

MCP server for Fuse Network: balances, tokens, staking, DeFi data, swaps and on-chain transactions.

Plain-English decode of any Base mainnet transaction: strict JSON, risk flags, no LLM.

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

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.

Zero-install remote MCP server for proof-of-existence file attestation.

Website security ratings, token verification, and tamper-evident ledger heads from Obelisk Gate.

x402 game: take the crown, each take raises the next price 1.5x. hill_status is free.

Solana MCP for wallets, trades, markets, PnL, transfers, onchain data, signable swaps and API tools.

Prediction-market fee/KYC/withdrawal data, venue recommendations, and a paid x402 change feed.

Nine-chain onchain intelligence for AI agents. The verifiable proof stream is free. Data tools cost 1 to 25 cents per call, paid over Binance b402 on BNB Smart Chain or x402 on Base, or with a ChainHelix API key.

Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.

Buy timestamped web, company, commerce, social, document and decision data via x402.

Crypto intelligence MCP for market data, DeFi, wallets, security, DEX, NFTs, and Solana.

DefiLlama MCP — DeFi analytics from DefiLlama (free, no auth)

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.