"Methods to Read Data from PostGIS" matching MCP connectors:

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

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

Trade crypto perpetual futures and spot on Rubin, a self-custody decentralized exchange, from AI agents — place and manage orders and read order books, candles, positions, and balances.

Public MCP discovery for Blocksize market data, pricing, and docs.

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.

On-chain stablecoin market cap and Bitcoin institutional holdings data.

PayPerByte — per-byte data for AI agents: x402 USDC on Base, EIP-712-attested. No token.

Read-only DERO blockchain MCP: 32 tools (11 composites) incl. TELA discovery + bundled docs.

Read-only MCP server: verify credentials and browse escrows on the Stellar testnet contract.

Pre-transaction token risk checks for autonomous agents on six chains. Read-only; paid via x402.

x402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.

Read-only pre-sign evidence for onchain agents: route quality, MEV exposure, clear/caution verdict.

XRPL token rug-checks, issuer reputation & AMM data for AI agents. Pay-per-call USDC via x402.

On-chain honeypot/rug scanner, market data, and launch tools for Robinhood Chain (EVM 4663).

Keyless prediction-market data across 11 venues plus paper-trading of crypto spot, futures, and PM.

Crypto prices, gas, DeFi TVL, and live Polymarket odds. x402 pay-per-call, $0.001, no API key.

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.

Read-only MCP server for Robinhood Chain token discovery, research, and due diligence via GMGN.