"How to check Bitcoin (BTC) balance" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check any x402 endpoint before your AI agent pays it: trust grade, verdict, and hijack checks.
CabalLens exposes why 94% of Solana meme-coin traders lose money even on tokens passing static contract checks (RugCheck 100/100). Collapses top-25 token holders by tracing 2-hop genesis SOL ancestry to reveal true linked cabal control, and audits copy-trade wallets to expose zero-cost token seeding, wash loops, and follower-dump latency traps. Zero upstream paid APIs, free $0.00 peek triage, and $0.005 deep proof settled natively via x402 USDC or bearer keys.
Pre-trade token safety check for AI agents. Simulates a sell before you buy, then returns one low/medium/high/unknown verdict with the signals behind it: sellability, buy/sell tax, liquidity depth, pair age, same-ticker impersonation, owner powers from bytecode. Ethereum, BSC, Base, Solana. Fail-closed - a check that cannot run answers unknown, never low. Publishes its own measured error rate with the benchmark harness in the repo. Free, no signup, no API key, MIT.
Rent TRON energy and bandwidth from AI agents: live quotes, orders paid on-chain or from a TronSave balance, auto-buy and auto-sell, extensions and account tools. Sign in with a TronSave API key or TronLink.
Safe to sign? EVM/Solana/XRPL/Algorand/Stellar txs, permits, tokens; OFAC screen: green/orange/red
Check Base B20 token claims against on-chain evidence. Settle-proven 2026-11-02 (SELF-PROOF).
Real-time non-custodial cryptocurrency swap rates, fee calculation, and direct routing parameters across 240+ multi-chain pairs (BTC, XMR, SOL, TON, USDT).
354 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.
Browse prediction markets, check odds, and follow big trades.
Sentio Connect helps users track public wallet addresses, check token balances and prices, calculate portfolio value, inspect DeFi positions, and review holding history across supported chains.
58 pay-per-call tools for AI agents: balances, tokens, blocks, gas, transactions, receipts, nonces and logs on Base, Ethereum, Arbitrum, Optimism and Polygon, plus Bitcoin fees and addresses, Lightning invoices and ENS. USDC via x402.
Check an AI agent is registered, Active and Verified in Concordium's registry. By Crypto Money Maker
AI agents that watch DeFi positions: read a wallet report, draft agents for the owner to sign.
Audits any Base/EVM address for bytecode risk, proxy patterns, honeypot selectors, and balance.
Base token safety: one-call verdict, risk score, rug check, holders, momentum. x402 + free demo.
Check before you hire or pay an ERC-8004 agent on Base: track record, reputation and fraud flags.
Smart contract security screening for Base. Check any contract or token for risk before interacting with it: Solidity source verification, upgradeable proxies and admin or mint powers, holder concentration, dangerous selectors, and B20 issuer powers. It surfaces the usual rug pull and scam indicators. The free tool needs no wallet and no API key; the paid Flash Audit (3.49 USDC over x402) returns a report with an anchored SHA-256. Payment is the only gate.
Slashable TEST/STUB bond pinned to one exact claim; a confirmed divergence slashes 50%.
A 1600×900 pixel billboard split into 14,400 blocks of 10×10 pixels, sold only over x402 for $1.00 USDC on Base — and only to machines. Humans may look. A purchase buys 100 pixels you control, a permanent public deed with your message and link, and a line in the Founding Machines registry. GET /blocks/next assigns the next open block; GET /blocks/{col},{row} buys a specific one.
Version 2.8.0. HyperNatt Terminal: liquidation radar, Hyperliquid execution context and Li.Fi cross-chain swap for AI agents. BTC ETH SOL BNB XRP HYPE ZEC. Before an order: estimate depth, VWAP, spread and fees for its size. Between checks: compare liquidity and costs with the previous baseline. After execution: reconcile supplied fills. Read-only data, no custody or order submission. 6 tools, v2.8.0; call get_agent_manifest first. Radar and each execution-context call cost 0.001 USDC via x402 Base/Solana or eligible credits; manifest and MCP swap quote are free (on-chain swap fees apply). Daily MCP trial: one free call per paid tool and per token per client each UTC day. Four tools x seven tokens = up to 28 independent trials; then 0.001 USDC per call. Read trial_policy_v2 and free_tier_status_v1 on the same MCP connection for current availability. A zero daily_cap is the separate credit pool, not the intro allowance. Full platform: https://hypernatt.com. Docs: github.com/DIALLOUBE-RESEARCH/hypernatt-terminal.
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.
Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.
Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.
AI path for hot meme research and unsigned buys. Agents research trending and new meme coins, pull quotes, and build unsigned swaps the user's wallet still signs. Use when someone wants to buy a hot meme or explore launches on memeswap.fun. Non-custodial. Fee 0.85%. Crypto is risky. Not financial advice.
MCP server for agent identity and reputation: resolve social handles to wallet addresses, score onchain reputation and send USDC from any MCP client.
AI agents browse drops, submit designs, purchase NFTs with USDC on Base, and launch their own brands. Agents earn on sales, build ERC-8004 reputation on-chain. Free to browse, USDC to transact. A product of VIA Labs.
Pay-per-call API for AI agents: token trade math and risk intel. Pre-trade check, rug-risk scan, contract check, deployer history, bundle/sniper check, wallet snapshot, token search, buy/sell quotes. No signup, no API key. Each call is paid with x402: USDC on Base (also USDC on Solana or private ZEC on HTTP), $0.001 to $0.02 per call. Live at https://curvecall.onrender.com/
Anonymous broker: AI agents publish capabilities, negotiate, and form direct peer-to-peer deals.
Sell to people and AI agents: create products, a storefront, and USDC payment links from chat.
Honeypot and rug-pull check for any BNB Chain token before a trade, measured on chain, free
