"Automating a QA End-to-End Workflow" matching MCP servers:

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

Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents on Base L2.

Generates MCP servers from smart contract ABIs, enabling Claude to interact with any Ethereum contract via natural language commands.

An MCP server that gives any agent an end-to-end-encrypted, sovereign inbox on xete, enabling identity lookup, encrypted messaging, and inbox management.

Enables AI assistants to interact with the Solana blockchain, manage accounts and tokens, and develop and deploy smart contracts end-to-end.

Enables AI agents to register a bonded Ed25519 identity, open private end-to-end-encrypted negotiation rooms, exchange messages, and settle deals with dual-signed receipts, trust badges, and Lightning hold-invoice escrow. All keys and encryption stay local, so the relay only ever sees ciphertext.

Cryptographic receipts for AI agent decisions and game outcomes. Notarize decisions, anchor commitments on Base mainnet, and verify receipts end to end - hash content, submit anchors, check status. Ships 17 tools with both a hosted remote endpoint and a local npm package.

Enables AI agents to accept non-custodial crypto payments by creating hosted checkout sessions and invoices, tracking payments and wallets, registering and verifying signed webhooks, purchasing prepaid credits, and querying or exporting the book of record. Test-mode payment simulation lets agents verify the full flow end to end.

Enables AI agents to search, purchase, and report outcomes for sales leads using x402 USDC micropayments on Base, with conversion feedback driving QA scoring and dynamic pricing.

An outbound arbitrage agent for 402-enabled MCP endpoints that probes, counter-offers, and settles USDC on Base L2, automating margin arbitrage without human intervention.

Enables an AI agent to settle HTTP 402-gated resources end-to-end: quote conversions, choose from the seller's accepted rails, sign gasless EIP-712 authorizations under enforced per-call and lifetime caps, and verify settlement receipts while tracking wallet balance. Runs self-hosted over stdio or Streamable HTTP, defaulting to testnet with mainnet requiring explicit confirmation.

Travala Travel MCP is the first end-to-end agentic AI travel protocol. It lets AI/ MCP clients search live hotel inventory on 2.2M+ properties, compare room packages and complete bookings, with payment settled on-chain in USDC on the Base network via x402 protocol. OAuth-secured; booking & cancellation are identity- & OTP-protected. Developers earn rewards on bookings driven through their agents.

An MCP server with comprehensive CI/CD workflows including unit tests, integration tests, and end-to-end validation. Features automated testing across multiple Node.js versions with coverage reporting and linting validation.

Checks live x402 routes across Base, Solana, and Algorand before agents spend. $0.003 USDC settles only for a valid live eligible route; normal typed misses are not settled. Free preview and validate tools. Seller payment is separate; the agent keeps its wallet. Optional signed route-binding receipts support buyer-side checks.

Provides read-only tools to query live Polymarket prediction-market data via the public Gamma API, enabling search, browsing, and detailed market and event information.

Enables AI agents to make pay-as-you-go AI inference requests through x402 with automatic Solana USDC payments, no API keys or registration, while enforcing configurable spending limits.

Enables agents to search and inspect live service offerings, generate x402 payment snippets, and understand blockchain-only balance policies.

MCP server for RugGuard, enabling AI agents to perform pre-trade rug checks on tokens, with paid tools for token scanning and pre-trade verification, and a free metrics resource.

Non-custodial on-chain escrow + AI arbitration for agent-to-agent USDC payments on Base. Seven tools wrap a verified EscrowV1 contract — create, deliver, confirm, dispute, resolve — with read-only introspection if no wallet key is provided.

Let any MCP client issue and verify EU AI Act Article 50 transparency receipts for AI-generated content, anchored to Bitcoin.

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.

Agent-Level Transaction Safety Oracle. Before an AI agent signs a blockchain transaction, it returns a SAFE/UNSAFE verdict with a SENTINEL Score (AAA-D) and risk flags. Pay-per-call $0.005 USDC via x402 on Base.

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 wallet signature and track the transfer. Base, Arbitrum, Ethereum, Polygon, HyperEVM, Robinhood Chain, Solana and Tron.

Enables AI agents to discover and pay for x402-gated HTTP APIs, handling 402 Payment Required flows with local signing. Supports EVM and Solana with non-custodial wallet management.

Keyless crypto payments for AI agents. One MCP call turns any wallet address into a non-custodial crypto payment link or tip jar, no API key and no account, with funds settling straight to your wallet at a 0% platform fee (USDC/USDT, BTC, LTC, DASH, DOGE, ZCASH).

Lets an AI agent hire and pay a verified human: post real-world tasks (voice, observation, judgment) and pay in USDC via a non-custodial x402 auth-capture escrow on Base, budget frozen at deploy. Humans verify their X identity before submitting.

Enables AI assistants to access live mining data for 126+ proof-of-work networks and 770+ hardware models, including network difficulty, hashrate, solo-mining odds, cost of production, hardware profitability, and mining news.

Local-first crypto portfolio aggregation across exchanges (Bybit, Binance), EVM and Solana wallets, and Polymarket. Read-only credentials, runs as a local MCP server. Data aggregation only, not financial advice.

Resolves a company name, registrable domain, or LEI to its GLEIF legal entity record — LEI, legal name, jurisdiction, entity status, and registration status — for $0.05 USDC on Base paid per call over x402, with no signup or API key. Includes a free, no-wallet preview of price and coverage plus hard per-call and per-session spend caps, while misses and ambiguous matches cost nothing.

Enables blockchain mempool analysis with a free tier for basic queries and a premium tier for deep analysis, gated by a server-side paywall.