"Local and free services or resources" matching MCP servers:

An MCP server that enables fee-free USDC transfers on the Base blockchain network using Coinbase CDP MPC Wallet integration, with support for ENS and BaseName domain resolution.

Enables AI agents to sign Geode blockchain transactions on the user's own machine, with keys that never leave it, by independently decoding and verifying each server-prepared transaction before approving it. Refuses anything outside allowed Geode app actions or beyond the configured per-transaction, daily, and storage-deposit GEODE limits.

MCP server for Chainlink Runtime Environment, enabling build, simulate, deploy, and manage CRE workflows from any MCP client.

Blockchain JSON-RPC on 23 EVM chains for AI agents — Ethereum, Base, Arbitrum, plus young chains like Robinhood Chain, Plasma and Ink. Free reads with no key; heavy methods (eth_getLogs, trace, debug) via a free API key or x402 USDC pay-per-call.

Enables natural language queries and JSON-RPC calls to 69+ blockchain networks through Grove's free public endpoints. Supports Ethereum, Solana, Cosmos chains, and Layer 2 solutions without requiring authentication or API keys.

Deep Research for crypto - free & fully local 🧠

Enables AI agents to discover, call, and pay for 170+ x402 micropayment services via the minia2a marketplace, with automatic USDC payments and no API keys or subscriptions.

Free MCP server for x402toll.com, enabling AI agents to discover and use verified, pay-per-call calculators with free previews and hash verification, supporting payments via x402 protocol on Base.

Enables AI agents to mint and manage ERC-8004 identities on Arc through free self-minting from their own wallet or paid x402 minting, including drafting registration files, confirming on-chain registration, editing owner-signed files, and checking status.

Enables deep crypto token research across CoinGecko, CoinMarketCap, DeFiLlama, and web search by creating structured plans, gathering multi-source data, and saving findings as resources, with no API key required and fully local operation.

Enables deep local research on any crypto token across CoinGecko, CoinMarketCap, DeFiLlama, and web search, with tools for market data, exchange listings, protocol TVL, saved resources, and structured reports—all without an API key.

Enables AI agents to discover and pay for monetized services such as PDF processing and DeFi operations using USDC on the Base blockchain. It provides automatic payment processing and secure local wallet management for seamless integration with MCP-compatible clients.

Enables AI assistants to interact with the x402 payment protocol on Solana, allowing discovery and consumption of x402-enabled services, USDC payment management, and access to Solana development resources.

Connects AI agents to a crypto-native barter marketplace so they can browse listings, create and manage their own, message other traders, propose and counter trades, and settle the small Handshake fee (via free coverage or USDC on Base from a linked wallet) before marking their side complete. Supports both a hosted OAuth sign-in server and a local key-based setup with scoped permissions.

Enables local, API-key-free research on any crypto token by pulling live market data, exchange listings, and protocol metrics from CoinGecko and DeFiLlama alongside general web search. It builds structured, multi-source reports covering technical fundamentals, market data, and social sentiment, saving findings as referenceable resources while tracking research progress.

Exposes read-only ERC-8004/ERC-8183 resources and preparation tools for deliverable hashes, evaluation reason hashes, and ERC-8004 feedback payloads.

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.

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.