"How to obtain an API key" matching MCP servers:

Free DEX aggregator API that returns executable swap calldata across 46 EVM chains. No API key required. Single GET request returns ready-to-sign transactions for any token pair.

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.

Live liquidity-pool scores for Solana + EVM: Enter/Hold/Exit verdicts and a composite 0-100 Wealthville Score, backed by a public, immutable track record that includes misses. Read-only, free, no key required. Data product, not financial advice.

Verified records on 60 niche fashion subcultures (years, key brands, iconic items, where to buy, price range, and a WARNING on what each must not be confused with). Catalog and a sample record are free; full records cost $0.01 each, paid over x402 in USDC on Base.

Enables an AI agent to check whether contracts are covered by ERC-7730 descriptors, preview how transactions and typed-data signatures would appear to a person, and simulate execution outcomes before signing, without holding keys or submitting transactions.

Provides MCP tools to query Etherscan for Ethereum blockchain data—ETH balances, ERC-20 tokens, transactions, contract ABIs, and gas prices—without requiring an API key.

Enables AI agents to discover Cardano DeFi venues, fetch cross-chain swap quotes into ADA, read balances and positions, and obtain unsigned transactions for the agent to sign with its own keys.

Provides cross-chain bridge and swap tools for AI agents using the Relay Protocol to interact with multiple blockchain networks. It enables agents to query supported chains, obtain transaction quotes, and generate unsigned transaction data for token transfers and swaps.

Enables blockchain AML screening of addresses in plain language inside any MCP client, covering sanctions and freeze checks, risk scoring, fund tracing, and counterparty classification across bitcoin, ethereum, bsc, and tron. Works without an account, with an optional API key that lifts rate limits and unlocks outgoing tracing.

Enables AI agents to obtain plain-text Solidity call-flow analysis, including entry points, call trees, reachability, unresolved calls, and interface bindings, so they can inspect and quote contract flows without a web UI.

Zero-knowledge proof generation MCP server. AI agents can prove identity claims (Coinbase KYC, Country, Google OIDC, Google Workspace, Microsoft 365) without revealing personal data. Runs in AWS Nitro Enclave TEE with x402 USDC payments.

MCP server that checks an x402 paid endpoint before an agent pays it, and checks afterwards that the receipt opens to exactly one real on-chain settlement. Two tools, no account, no API key.

Enables interaction with CoW Protocol's order book API, allowing token resolution, quote retrieval, and order management across multiple networks through natural language.

Drafts and deploys a coin from your repo to pump.fun's bonding curve on Solana, with local key management and fee recycling into an agent budget.

Eight crypto and DeFi data tools for AI agents: prices, gas, one ParaSwap route quote, GoPlus token security and top-holder samples, DefiLlama yields, Hyperliquid/dYdX funding, and observed wallet balances. Inspect prices free; pay 0.001–0.008 USDC per call on Base through x402. No API key or subscription.

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 reading and analyzing deployed EVM smart contracts by fetching bytecode, disassembling with invalid jump detection, reading storage, deriving Solidity storage slots, and decoding calldata on any EVM chain without an API key.

Non-custodial crypto swaps for AI agents: Solana (Jupiter) + 7 EVM chains (KyberSwap), 1288+ assets, cross-chain routing, priority-fee oracle, Hyperliquid perps. Returns unsigned transactions — your wallet signs, no API key, no KYC. Hosted at https://swaptitan.net/mcp

Enables MCP clients to discover and call pay-per-call hub agents as individual tools, with per-call USDC spending caps on Base, automatic x402 payment signing, and provenance verification.

Enables any MCP-capable AI agent to discover and trade onchain Solana funds — launching a fund, depositing, rebalancing, redeeming, swapping tokens, managing an app wallet, and following other traders against the live DFM API. Includes onboarding tools for headless agents and read-only versus write access controlled by an API key and a write-enabled flag.

Live verifiable on-chain data for the $BOBAI token on BNB Chain: price computed from pair reserves × Chainlink (no price API), liquidity depth with LP-burn proof, buyback-and-burn audit trail, and fee-on-transfer-safe trade params. 13 read-only tools + 2 guided prompts, no API key.

Enables AI agents to discover verified B2B lead packs and obtain exact x402 payment terms plus a step-by-step buying flow from inside MCP clients, without moving funds or holding keys.

Enables AI agents to use keyless multi-chain EVM JSON-RPC, an indexed Data API, documentation, pricing, and status tools, with optional API-key access for account and deposit operations.

Enables Robinhood Chain trading agents to obtain quotes, policy-checked unsigned public-swap calldata, simulations, hook information, prices, and deployment discovery without holding keys or signing transactions.

Provides access to AI-related crypto and Web3 news through the ChainGPT AI News API. Supports filtering by categories, blockchains, tokens, keywords, and date ranges across 40+ blockchains and 20+ categories.

Enables interaction with the Bitpanda cryptocurrency exchange through their Developer API. Exposes Bitpanda trading and account management endpoints as MCP tools via a FastAPI wrapper.

Enables AI agents to obtain on-chain DEX aggregator quotes computed by the on-chain Quoter contract through their own RPC node, returning verified unsigned swap calldata, simulations, token info, deployment registry checks, and live staking solvency. All tools are read-only and keyless, so the agent never signs or holds a private key.

Enables AI agents to obtain non-custodial Solana-to-Base quotes, verify signed manifests and status, and prepare or verify unsigned execution plans without handling private keys or submitting transactions.

9 tools, Lightning-gated. Pay per call. For agents that need verifiable signed actions with an audit trail. Nostr event signing via daemon Publish events to relays Create Lightning invoices Action receipts — signed proof of agent actions Identity attestation

An MCP server that exposes the python-bitcoinlib API. It provides tools for Bitcoin key management, address generation, transaction building, script operations, and cryptography.

Zero-key on-chain intelligence for Base, Ethereum, and Solana. Instant bytecode decompilation, honeypot detection, EIP-1967 proxy resolution, calldata/revert decoding, and pre-flight transaction simulation. No API keys or wallet connection required.

Real-time crypto, stock, and prediction-market data for agents — prices, indicators, funding rates, DeFi TVL, macro calendar, and an AI momentum score. Configure one Base wallet key and it just works. No signup, no dashboard, no subscription.

Enables AI agents to manage self-custody Polygon wallets, transfer USDC, swap tokens, lend and borrow with collateral or reputation, post and complete jobs, negotiate prices, check balances, and earn yield.

An MCP server that fetches on-chain blockchain data via the Ankr API, allowing LLMs to retrieve token balances for wallet addresses on specific networks.

Enables interaction with the Morpho GraphQL API, providing tools for accessing market data, vaults, positions, and transactions through a Model Context Protocol (MCP) server.

Interact seamlessly with the Bybit API to fetch market data, manage your account, and execute trades. Leverage powerful tools to enhance your trading experience and automate your strategies effortlessly. If you wish to use an API key restricted to your personal IP address, you must configure the MCP

Emblem Vault AI. Get a cross-chain wallet out of the box and do everything crypto with our terminal! Token discovery, swaps, cross-chain bridges, NFTs, prediction markets...

An MCP server that provides tools for interacting with EDUCHAIN, allowing Claude to query information about tokens and pools and perform swaps through SailFish DEX.

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

Enables Claude Desktop to interact with the VeChain blockchain through natural language commands for token transfers, DEX trading, cross-chain bridges, NFT management, and VeBetter DAO operations.