"SPARQL query language and tools" matching MCP servers:

Enables AI assistants to query blockchain data across 30+ networks via Infura, using natural language for blocks, transactions, contracts, and more.

A Model Context Protocol server that enables interaction with Snapshot.org, providing tools to query Snapshot spaces, proposals, and users through natural language.

An MCP server that provides access to Etherscan blockchain data APIs, allowing users to query Ethereum blockchain information through natural language.

Facilitates interaction with Starknet blockchain via MCP by exposing various RPC methods, allowing users to query chain states, transaction details, and block information using natural language queries.

Enables read-only access to Vitruveo mainnet chain data and observations—including network status, balances, blocks, receipts, history, view calls, event decoding, bounded scans, token probes, ABI/proxy and log observations, supply arithmetic, and historical-data probes—through stdio or authenticated Streamable HTTP without wallet, signing, or write operations.

23 tools for AI agents working with Nostr Open source. No API key. No account. NIP-46 remote signing Publish notes, reply, react, repost Encrypted DMs (NIP-04 + NIP-44) Fetch events, profiles, social graph

A comprehensive toolkit for Ethereum blockchain analysis within Claude AI, enabling contract auditing, wallet analysis, profitability tracking, and on-chain data retrieval.

Exposes Lighter DEX data (volume, points, rank, liquidity, airdrop eligibility) as MCP tools, letting LLM agents query wallet farming stats in natural language. Read-only, no keys required, works with Claude, Cursor, and Cline.

Provides tools to query Nansen Smart Money on-chain data, including net flows, token holdings, and wallet labels and profiles.

MCP server for managing TON blockchain sites, deployments, DNS, and storage via the Resistance Tools platform.

Connects MCP-compatible agents with the OriginTrail Decentralized Knowledge Graph, enabling creation, retrieval, linking, and exchange of verifiable knowledge using natural language and SPARQL queries.

Enables AI assistants to interact with Sui Network through tools for balance checks, transfers, swaps, staking, and more.

Let AI agents interact with the WAX blockchain. Query balances, explore NFTs, track prices, and monitor transactions through natural language.

A bridge that enables AI language models to publish content to the Nostr network by implementing the Model Context Protocol (MCP).

Enables agents to query Base blockchain data using natural language by providing contract addresses, SQL templates, and direct access to Coinbase's SQL API for realtime on-chain analytics including DeFi, NFTs, and wallet activity.

Enables Claude to increment and query a counter deployed on the Linera blockchain via natural language, using an Apollo MCP server bridge.

Exposes Base mainnet chain query tools over MCP, letting clients fetch an address's native balance and current gas fee estimates (slow/standard/fast urgency) from an upstream HTTP API. Paid tools are gated by x402 micropayments settled through the CDP facilitator, with a free health check and a documented free-trial allotment.

Provides Clockchain's verified-time primitives, notarization, smart-contract scheduling, audit trails, and agent identity verification to any MCP client.

A production-ready MCP server that wraps the Kxcoscan blockchain explorer API into structured endpoints for AI agents. It enables users to query wallet balances, transaction histories, token transfers, and contract details via natural language.

Enables digital collateral intelligence through tools that query public DeFi and on-chain data for analysis.

A Model Context Protocol server providing tools for querying Bitcoin blockchain data via Blockchain Data and Query APIs, supporting various BTC information retrieval functions.

Provides AI agents with 71 tools to query Etherscan's blockchain analytics via the Etherscan API, with no authentication required.

Connects to Lightning Network nodes and enables natural language queries for channel information, providing both human-readable responses and structured JSON data through the Model Context Protocol.

Enables natural language interaction with the Avalanche blockchain through AI assistants, allowing users to execute Avalanche CLI commands and AvalancheJS API operations without technical knowledge.

Enables AI assistants to manage Coinbase wallets, trade assets, interact with DeFi protocols, and query on-chain data through natural language.

Read-only on-chain query surface for the AgentCivics civil registry on Sui — soulbound AI-agent identities, on-chain memories, reputation, refusal records. Hosted, no install, no keypair. For write tools (register, write_memory, record_refusal), install the npm package @agentcivics/mcp-server locally and supply your own keypair.

An MCP server that gives autonomous coding agents deterministic, schema-validated tools for EVM smart contract development — security scanning, gas profiling, compiler diagnostics, and transaction simulation.

Enables AI agents to read and bid on a paid message slot on Solana, with enforced spend limits, dry-run proposals, and an append-only audit log for every write.

Rescues USDC, USDT and USDG from wallets with no gas. Agents check a wallet for stuck or frozen stablecoins, quote a send or a swap into the gas coin, collect the user's wallet signature and track the transfer. Fees come out of the amount, and nothing moves without the user's signature. Base, Arbitrum, Ethereum, Polygon, Avalanche, BNB Chain, HyperEVM, Robinhood Chain, Solana and Tron.

MCP server exposing AIMarket's verifiable oracle capabilities (Platon VRF, Chronos VDF, LUMEN reputation) as agent-callable tools with pay-per-call.

Exposes nine purpose-built tools for EVE: Frontier on Sui Move, covering Smart Assembly contract coding, Smart Gate route and toll planning, Network Node gigajoule optimization, Smart Turret targeting, killmail threat intel, SSU market making, zkLogin character verification, sovereignty fuel tracking, and PTB drain simulation.

MCP server for Pi Network that enables AI agents to query Pi chain data (balances, transactions) and verify user tokens, with optional payment sending that is off by default.

Enables LLMs to interact with the AT Protocol ecosystem, including Bluesky, through natural language. Supports public data access without authentication and full write operations with authentication.

Trust infrastructure for AI agents on Base. DEX Spread Oracle (live Uniswap V3 prices), on-chain escrow, insurance pool, and collective knowledge base. 7 smart contracts. Pay-per-query via x402 micropayments in USDC.

MCP server that enables AI signing agents to pre-flight transactions by checking ERC-7730 descriptor safety, explaining function semantics, and scanning contracts for danger primitives.

MCP server for local transaction signing across EVM, UTXO, Tron, and XRP blockchains, with no network calls or API keys required.

Provides Web3 founders with tools for project scoring, portfolio matching, fund matching, hackathon discovery, jurisdiction analysis, Twitter audit, and smart contract security review. Works with MCP-compatible assistants without transmitting file contents.

MCP server that builds unsigned Paraswap token swap transactions for self-custody wallets, holding no keys and signing nothing. It returns raw transaction data for a human to review and approve before execution.

Solana enterprise compliance screening and RFC 9110 x402 HTTP micro-payment settlement for AI agents with fail-closed OFAC and drainer threat intelligence.

Lets AI agents check whether an EVM wallet address carries an EIP-7702 delegation across eight chains (Ethereum, Base, BNB Chain, Arbitrum, OP, Polygon, Gnosis, Unichain) and learn how to obtain a deeper paid report with delegate bytecode heuristics and risk levels. Read-only, never touching private keys or seed phrases.