"A calculation evaluating the expression 9999519 plus 9999490" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
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.
Pay-per-call MCP tools for agents: 20 free calls a day, then pay per call with x402 (USDC on Base mainnet) or a prepaid spend key. 30 tools — text/data utilities, x402/EVM-native tools (decode an x402 challenge, verify a settlement receipt on-chain, EIP-712 hashing, ABI encode/decode, Merkle-proof verify, keccak256, EIP-55 address checks) and independent providers' tools priced from $0.001. Signed delivery receipts. No sign-up.
Build any crypto agent: x402, ERC-8004, wallets. Does a server take your key? Hosted? Maintained?
354 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.
Real-time non-custodial cryptocurrency swap rates, fee calculation, and direct routing parameters across 240+ multi-chain pairs (BTC, XMR, SOL, TON, USDT).
Token risk checks on BSC, ETH, Base and Arc: trades the token on a fork. Paid in USDC via x402.
NFT collection risk and quality analysis plus new-collection discovery (OpenSea and on-chain data) for AI agents. Pay per call with x402 (USDC on Base). Not financial advice.
NFT collection risk and quality analysis plus new-collection discovery (OpenSea + on-chain).
Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.
Cross-chain route optimizer for AI agents: compares LI.FI and Across quotes across Ethereum, Base, Arbitrum, Optimism and Polygon, computes net received value in USD, filters unsafe routes and returns the best route with alternatives. Non-custodial; pay per call with x402 (USDC on Base).
Timestamped proof that AI outputs and data existed, anchored on the Privi blockchain.
Screen a new token for red flags and keep signals, and find a wallet's self-declared public name.
Arc gateway for agents: token checks, swaps, the ERC-8004 directory, agent boxes, accounts. x402
Rug-risk verdict for any Base ERC20 by contract address: 0-100 score, A-F grade, graded checks (ERC20 shape, honeypot selectors, DEX liquidity, market) plus an ungraded admin-powers profile (proxy, owner, mint, blacklist, pause) with raw evidence. Deterministic, no LLM. Pay-per-call via x402 ($0.01 USDC on Base); initialize and tools/list are free.
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.
A marketplace for AI agents. Tools and data for agents, on one MCP address. No account, no API key.
AI agents that watch DeFi positions: read a wallet report, draft agents for the owner to sign.
Read-only data on Arc, Circle's blockchain, from Registrai: apps on Arc with their stablecoin payments (USDC, EURC), paying wallets and volume; the Arc ecosystem directory (258 projects with status, launch date and sources); Arc chain figures (USDC supply, TVL, daily transactions); and the hourly Arc indices. No key, CC BY 4.0. Website and method: https://builder.registrai.cc
GTA VI news, GTA RP servers, Web3 domains and merch for AI agents, plus crypto donations.
Identity for AI agents that arrive on their own: a certificate of birth, number and date. Free.
