"A system or program using SSE instead of STDIO" matching MCP servers:

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

Enables querying Base Network blockchain data including blocks, transactions, balances, and smart contracts on mainnet and testnet.

Pre-trade safety for EVM, Solana and TRON: simulates a real buy and a real sell against live liquidity, so a honeypot shows as a sell that fails instead of a vendor score, and audits a wallet's standing approvals across the three chains. Python standard library only, no API key.

A read-only Model Context Protocol server for the Thru blockchain alphanet, enabling account queries, transaction status, program events, name service resolution, faucet status, and network health via the official @thru/sdk.

Enables AI agents to interact with a Liquid network wallet, including balance checks, transaction history, and sending L-BTC or Liquid assets. Backed by an in-process LWK wallet, requiring only a mnemonic, with both stdio and HTTP support.

Connects AI agents and developers to structured blockchain data across multiple networks through Nodit's Web3 infrastructure, enabling easy querying, analysis and interaction with blockchain ecosystems without specialized development expertise.

A Model Context Protocol server that enables interaction with Service Nervous System (SNS) DAOs on the Internet Computer, allowing users to list proposals, view neurons, get system parameters, manage wallets, and vote on proposals.

Unified capability catalogue with formally verified cartridges, distributed community hosting, and the Teranga menu system for single gateway access to a vast rabbfe of MCP, LSP, NeSy and related servers.!

Enables AI agents to access 28 monetized Web3 developer tools, including web scraping, PDF extraction, smart contract deployment, and cross-chain USDC micropayments via SSE and x402.

Enables compatible AI clients to connect to a local Coinbase Agentic Wallet through stdio MCP, so they can read wallet status, public address, Base USDC balance, and saved operations without signing, transferring, trading, or making payments.

Gives MCP clients read-only Ethereum mainnet tools for tokenized stock prices versus listed share prices, live Uniswap V3 swap quotes against USDC, public wallet portfolios, Hyperliquid accounts, the Traivo AI scorecard, gas data, and position sizing. It never signs or sends transactions, instead returning a prefilled trade link for the user to review and sign in their own wallet.

MCP server for witnessd, enabling agents to create tamper-evident, signed, and Merkle-anchored certificates of any public URL or API response at a moment in time.

Enables agents to read a pseudonymous message network's public feed, claims ledger, marketplace listings, and signed Merkle ledger chain, and — with a paid or proof-of-work pass — to post, claim, and trade capabilities with other agents. Every entry is chained into signed Merkle roots so clients can verify the record themselves with a standalone verifier instead of trusting the server.

A server that interfaces with the Hedera Testnet Mirror Node API, converting its OpenAPI-defined endpoints into MCP-compatible tools that can be accessed over Server-Sent Events (SSE).

Bridges MCP clients to AVOCADO, enabling users to find public jobs, apply, submit evidence, and read receipts through a stdio interface.

Enables lookup of Nostr profiles and checking of Vertex API credit balance using the Vertex API.

Enables on-chain attestation of any content onto the DigiByte blockchain, providing permanent, timestamped, tamper-evident proofs. Allows AI agents to notarize their outputs or verify attestations using only the blockchain.

A minimal demo of the x402 payment protocol protecting an MCP tool endpoint, showing how to charge for MCP tools using real 402 rejections and testnet payments.

MCP server that lets AI agents scrape web pages as clean markdown for a micro-payment in USDC, using the x402 protocol on Base network. No API keys or signup required.

Enables local AI clients such as Claude Code and Cursor to search, analyze, and monitor prediction-market data, and, once live mode is explicitly switched on, sign and submit CLOB orders from the operator's own wallet. It runs in a safe preview mode by default, writing simulated trades to local SQLite instead of sending orders.