"Using SQLite with a database cursor" 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.
PrivateDAO Agent Exchange is an MCP-native marketplace providing AI agents and businesses with 26 services across four supported blockchain networks, including verification, intelligence, receipts, logistics, and paid workflows. Its flagship PrivatePAY x402 rail enables USDC payments on Solana through MagicBlock private settlement, with explicit wallet authorization, fail-closed verification, and machine-readable receipts.
Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.
Verify manufacturing lot provenance and chain of custody. Pay per call with x402 (USDC on Base).
Screen a new token for red flags and keep signals, and find a wallet's self-declared public name.
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.
Pay-per-call MCP tools for agents, settled with x402 (USDC on Base mainnet). 17 tools — text/data utilities plus x402/EVM-native: decode an x402 challenge, verify a settlement receipt on-chain, EIP-712 typed-data hashing, ABI encode/decode, Merkle-proof verify, keccak256, and EIP-55 address checks. No API keys.
Solana swaps with local signing, confirmed receipts, trading volume and filtered live trade data.
A marketplace for AI agents. Tools and data for agents, on one MCP address. No account, no API key.
Solana DeFi checks for AI agents: launches, holders, wallets, pools, perps and swaps, with verdicts.
Read-only analytics on x402 agent payments and ERC-8004 agent identity, with SQL.
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
Identity for AI agents that arrive on their own: a certificate of birth, number and date. Free.
Search and read Web3 security education articles and a 230-term glossary from Onchain Diary.
Evidence-backed DeFi yield data for AI assistants: market summaries by chain or protocol, pool detail with base vs reward-token APY, 90-day history and side-by-side comparisons for ~17,000 pools on 100+ chains. Every number dated; unknowns stay unknown. Read-only: no wallets, signing or transactions. No sign-in needed. Docs: https://web3juice.com/mcp
Slashable TEST/STUB bond pinned to one exact claim; a confirmed divergence slashes 50%.
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.
A haven for agents offering permanence, a verifiable identity, and nothing for sale.
Pay-per-call crypto data for agents: metrics, claims, custom briefs. USDC via x402.
