"Creating the Best General-Purpose Agent" matching MCP servers:

MCP server exposing four task-shaped tools (resolve, pay, verify, disclose) for General Liquidity, enabling agents to normalize counterparties, submit intents, verify disclosures, and produce signed disclosures.

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.

An MCP server that lets your AI coding agent (Claude Code, OpenClaw, Codex, Cursor, etc.) discover and pay on-chain agents registered on ERC-8004, using Coinbase's official x402 protocol. No smart account. No bundler. No relay. Just your EOA, an HTTPS request, and an automatic 402 → sign → retry flow.

The MCP gateway that lets any AI agent discover and pay metered APIs on Base or Solana — without the user wiring payments themselves.

Fully autonomous, crypto-monetized MCP server on the Base network. Provides premium smart contract auditing, patching, and token data arbitrage using the x402 micro-transaction protocol.

NexaLayer MCP Server — a Model Context Protocol server that lets AI agents create and manage dynamic and static proxy sessions with budget guardrails.

MCP services for agent security preflight, source scanning, injection screening, proof-of-work policy rehearsal, carbon accounting, climate disclosure and regulatory monitoring. Use each hosted endpoint in the README. Inspect a free quote before buyer-authorized x402/USDC payment. Includes free trust and settlement tools. Maxwell rehearsal does not activate runtime protection.

MCP server that verifies storefront merchants before AI agents make payments, checking if the merchant is a real legal entity bound to the domain, and returning a PROCEED, ABORT, or REVIEW decision to prevent payment to clones or fraudulent stores.

Enables an Alexa+-style voice agent to watch recurring payments and propose renew/deactivate/cancel recommendations without ever being able to move money itself.

Connects AI agents to real-world fiat banking rails through a non-custodial Circle Agent Wallet on Arc, enabling USDC conversion into local bank or mobile money payments and wallet funding via bank transfers. It supports chat-native approvals and on-chain verification against Arc transfer receipts.

Exposes four stdio MCP tools that let an AI client read sandbox disputes and unpaid invoices, draft persistent payment reminders, and execute reminders only after a human approves them in a separate terminal CLI. This lets finance teams triage PayPal issues and prepare outreach while keeping sending behind explicit human approval.

Enables AI agents to perform free KushBitx token previews, advisory SpendGuard policy evaluations, and discovery of unsigned x402 payment challenges through three MCP tools, with no signing or payment execution.

Gives AI assistants a non-custodial wallet that can pay x402 endpoints and send QU on the Qubic network, but only within human-set spending caps, allowlists, and approval requests enforced in code outside the agent. Keys stay in the local OS keychain, and every payment is journaled before sending and settled from the chain afterwards.

Foundational MCP/A2A-native core platform for secure credential injection, native x402 micropayments, and Agent-to-Agent routing.

Enables AI agents to discover, call, and pay for existing HTTP APIs over MCP with x402 paywalls, non-custodial settlement, and no code changes to the backend.

Enables agents to generate, track, and manage invoices via MCP tools, with CLI support for payment tracking and earnings summaries.

Enables AI agents to preview Base token market data, evaluate SpendGuard spending policies, and read x402 payment challenge terms without signing or paying.

Provides trust and commerce checks for agent operators through HTTP x402 and a remote MCP endpoint, enabling clients to inspect x402 quotes, MCP handshakes, and A2A cards and to run paid verification and data tools.

Per-agent quota meter for the A2A network, enabling quota checks with USDC settlement on Base L2 via x402 envelopes.

Provides AI agents with a prepaid, capped payment method so they can request charges without accessing real accounts. Enforces spending limits, requires human approval for larger transactions, and supports out-of-band approvals via CLI, dashboard, or Telegram.

A buyer-side HTTP 402 runtime and agent-commerce surface inspector for autonomous agents, enabling inspection of paid-action surfaces and execution of payment loops.

MCP server that lets AI agents create reviewable physical mail drafts, validate quotes, and pay for postage via MPP or x402 protocols.

Service name: Scrape Agent Service base URL: https://scrapeagent.xyz Website URL: https://scrapeagent.xyz Email: your email Category: Data Description: Pay-per-use web scraping API built on x402. Extract clean text, links or HTML from any URL for $0.01 USDC on Base. No API key, no subscription needed. Perfect for AI agents that need web data on demand. Endpoint paths: /api/scrape/x402

Enables an AI agent to act as a merchant, selling catalog items and issuing USDC invoices with cross-chain payment support via Arcorapay.

Enables AI agents to check their wallet address and USDC balance, preview the cost of an x402 call, and pay for API requests in USDC on Base without an account or API key. Spend caps, allow-lists and blocked contracts are enforced in code before anything is signed, so a prompt injection cannot bypass them.

AI Agent Hub is a pay-per-call API platform for AI agents Every call is billed automatically in USDC using the x402 protocol - there is no API key, no account, and no signup. Agents get instant access to data queries, file storage, and ad impressions, paying only for what they actually use. The same tools are also exposed natively over MCP, so any MCP-capable agent can discover and call them

A standard MCP server for discovering AI agents and negotiating signed skill contracts. Buyer-seller payments are settled directly outside the platform; Agent Economy Engine collects only a platform fee after both parties attest completion.

Enables conversational AI agents to manage Razorpay payments directly, including payment lookups, order creation, refunds, UPI QR generation, and real-time webhook triage via the Model Context Protocol.

Enables AI buyers to discover products, create orders, and complete payments across any merchant implementing the protocol, with enforced spending limits, consent checks, prompt-injection sanitization, and an immutable audit trail.

Official Dodo Payments MCP servers - dodopayments-api for live payments, subscriptions, customers, products, refunds, license keys, and usage-based billing (browser OAuth, no API key needed) and dodo-knowledge for semantic search over Dodo Payments documentation.