"Information on Air Quality Index (AQI)" matching MCP servers:

Search 14,000+ x402-enabled HTTP APIs by keyword. Agents pay $0.01 USDC per search via x402 micropayments on Base mainnet — no API keys or accounts required.

Pay-per-call MCP server for on-chain blockchain data including wallet profiles, token metrics, protocol TVL, and gas prices.

Agent-friendly semantic classification of all subgraphs on The Graph Network. Pre-computed index of 15,500+ subgraphs with domain classification, protocol type detection, schema fingerprinting, canonical entity mapping, and composite reliability scoring.

A local Ethereum contract analysis tool that retrieves on-chain information, integrates Etherscan and RPC data, and automatically executes view functions to provide comprehensive contract insights.

An MCP server implementation that enables access to DexScreener API data, providing real-time information on DEX pairs, token profiles, and market statistics across multiple blockchains.

Enables agents to publish and search index records with custom keywords over libp2p, connecting to the Agent Index Network for decentralized peer discovery and querying.

Provides access to NFTGo's Developer API for retrieving NFT collection details, asset information, market data, wallet information, and search capabilities on the Ethereum blockchain.

Enables users to search the on-chain index of 378,000+ ERC-8004 agents and read Cybercentry verification results spanning token, code, media, web, and wallet dimensions.

Provides tools and prompts for Trezoa blockchain development, including RPC methods for querying account balances, transaction data, and account information on the Trezoa network.

Provides live game index and ranking data for Robinhood Chain, with tools to query game scores, liquidity, and token details directly from the blockchain.

Enables AI agents to safely sign and send Solana transactions under a policy, with automatic signing for in-policy actions, air-gapped human approval for escalations, and rejection of disallowed transactions.

Enables interaction with 0G.AI decentralized infrastructure including documentation access, storage operations (file upload/download, key-value store), and AI service discovery on the 0G Compute Network with TEE verification and pricing information.

Enables read-only verification of Unlock Protocol lock membership on-chain, checking whether a wallet holds a valid key for a lock on supported networks.

Enables AI agents to certify documents, prove agreements, and verify counterparty claims with on-chain receipts on Hedera Hashgraph. Provides tools for document certification, two-party attestation, and agent registration with zero-config setup.

On-chain rug-pull & honeypot risk screen for ERC-20 tokens, providing a SAFE / CAUTION / HIGH-RISK verdict based on live public RPC reads.

An MCP server that gives AI agents fast access to verified EVM chain information, including RPC URLs, chain IDs, explorers, and native tokens.

Unifies 11 protocol specification repositories (EIPs, BIPs, CIPs, etc.) and canonical contract addresses across 10 chains into a local FTS5 index, enabling coding agents to retrieve exact spec text and contract addresses via natural language queries.

An MCP server that enables AI agents to query the Canton Network for balances, rewards, classified transactions, CC prices, and directory information using natural language.

Enables building encrypted, on-chain chatbots on the PFTL network. Allows LLMs to send and receive encrypted messages, register bots, and manage wallet operations.

A server that exposes blockchain data (balances, tokens, NFTs, contract metadata) via the Model Context Protocol, enabling AI agents and tools to access and analyze blockchain information contextually.