The content marketplace and tool layer for AI agents and publishers
xpay✦ is a two-sided marketplace: publishers license their content to AI agents through a single MCP endpoint, and agent builders get pay-per-use access to 5,000+ publishers and 1,000+ API tools with one account and one bill. Smart Proxy adds spending limits so autonomous agents never overspend.
5,000+ publishers
1,000+ API tools
Pay per use
MCP-native
What We Are & What We're Not
Publishers need a way to license to agents. Agents need access to content and tools. xpay✦ is the marketplace and payment layer that connects them.
What xpay Is
Publisher Content Marketplace
5,000+ publishers across news, finance, health, tech, recipes, and more — licensed for AI agent access. Browse, request access, and pay per query through one account.
API Tool Discovery
1,000+ API tools from 80+ providers — search, enrichment, scraping, AI models, finance. One MCP connection, pay-per-call pricing, no subscriptions.
Monetization Platform
Publishers and API providers monetize content and tools through xpay. Set your price per query or call, get an MCP endpoint, and start earning from agent traffic.
Spend Control Engine
Smart Proxy wraps agent calls with per-agent budgets, rate limits, and allowed destinations. Financial guardrails so autonomous agents never overspend.
What xpay Is NOT
Not Tied to One Protocol
xpay✦ is MCP-native and supports x402, plus emerging agent payment protocols (ACP, AP2, UCP) as they ship. You configure once; we handle the protocol plumbing.
Not a Walled Garden
Bring your own publishers, tools, APIs, or MCP servers. xpay✦ adds licensing, payment routing, and controls on top — it doesn't lock you in.
Core Products
A two-sided marketplace plus the financial and discovery infrastructure to operate it: license content, discover tools, monetize APIs, control agent spend.
Publisher Catalog (AgentFeed)
5,000+ Publishers, One Account
License content from 5,000+ publishers across news, finance, health, tech, recipes, and more. Browse by vertical, language, country, or AI-bot blocking status. Pay per query, no subscriptions.
5,000+ publishers across 22 verticals
Filter by language, country, paywall status
Request access to any listed publisher
MCP-native query endpoint
Per-query pricing set by publisher
Single API key for entire catalog
API Tool Discovery
1,000+ API Tools, One Connection
Browse and call 1,000+ API tools from 80+ providers — search, enrichment, scraping, AI models, finance, and more. Pay per call with no subscriptions. Connect once via MCP or REST and access everything.
1,000+ tools from 80+ providers
Pay-per-call pricing
Price discovery across providers
Single MCP connection
REST API fallback
Free credits to start
Smart Proxy
Financial Guardrails for Autonomous Agents
Wrap your agent calls with spending limits and intelligent payment routing across MCP, MPP, x402, cards, and stablecoin rails. Per-agent budgets, rate limits, allowed destinations. Policy enforcement at the edge with sub-200ms latency.
Per-agent spending limits
Real-time budget tracking
Multi-protocol routing (MCP, MPP, x402, cards)
Rate limiting & throttling
Allowed destination lists
Instant alerts on anomalies
Paywall-as-a-Service
Monetize Any API or Content Endpoint
Wrap any API endpoint or content feed with pay-per-call pricing. Set your price per request, configure rate limits, and start accepting payments from AI agents. Drop-in integration, no infrastructure changes.
One-line integration
Dynamic pricing models
Instant settlement
Real-time analytics
Webhook notifications
Usage-based billing
MCP Server Monetization
Earn From Every Tool Call
Register your MCP server, set per-tool pricing, and get a proxy endpoint. AI agents discover and pay for your tools through the hub. Start earning from agent traffic immediately.
Register any MCP server
Per-tool pricing controls
Proxy endpoint provided
Listed on xpay.tools
Usage analytics dashboard
Automatic payouts
Protocols & Standards
xpay✦ is protocol-agnostic by design — MCP for integration, MPP and x402 for payment negotiation, plus card and stablecoin rails for everything that doesn't speak any agent protocol yet. We integrate with what publishers and agents are already adopting, and add new standards as they ship. (See our Stripe Sessions 2026 builder's guide for the full landscape.)
MCP
Model Context ProtocolAnthropic’s standard for connecting AI models to external tools, data sources, and content. Every publisher and tool on xpay is exposed as an MCP server — agents connect once and access everything.
Learn moreMPP
Machine Payments Protocol (Stripe)Stripe’s agent-payment protocol announced at Sessions 2026 — supports microtransactions, recurring payments, and stablecoin + fiat acceptance via cards through Shared Payment Tokens on PaymentIntents. xpay routes MPP for agents that need card-rail breadth and Stripe-native flows.
Learn morex402
HTTP 402 Payment RequiredA web-native payment-negotiation protocol over HTTP. xpay supports x402 for agent-to-publisher and agent-to-tool transactions and runs the public xpay Facilitator service for verification and settlement.
Learn moreCards & Stablecoins
Issuing for agents · Bridge · Tempo · PrivyAgent-issued virtual cards (via Stripe Issuing and similar) and direct stablecoin rails (Bridge, Tempo) cover the long tail of merchants that don’t speak any agent protocol yet. xpay routes through whichever rail the counterparty actually supports.
ACP / AP2 / UCP
Emerging agent commerce protocolsAs agent payment and commerce standards mature, xpay will support them transparently. You configure spending policies once at the xpay layer; we route through whichever protocol the counterparty supports.
REST
Plain HTTP APINot every agent or publisher speaks MCP yet. xpay exposes a REST surface for tools and content so any HTTP-capable agent or framework can integrate without protocol-specific work.
You don't pick a protocol. xpay does.
Agents call publishers and tools through xpay✦. We route over whichever protocol the counterparty supports, abstract the plumbing, and keep your integration stable as the standards evolve.
Who xpay Is For
Whether you're building agents, monetizing APIs, or running tools at scale — xpay✦ fits your workflow.
Content Publishers
News orgs, vertical media, blogs, recipe sites, journals — license your content to AI agents through xpay’s publisher catalog. Pay-per-query revenue, no infra changes, MCP endpoint in minutes.
AI Agent Builders
Building agents with LangChain, CrewAI, Claude MCP, or custom frameworks? Give them licensed access to 5,000+ publishers and 1,000+ API tools with one account and spending controls built in.
API & MCP Server Providers
Have an API or MCP server that AI agents want? Monetize it with pay-per-call pricing. Set your price, we handle distribution and billing to agent traffic.
Enterprises Running Agents
Deploying AI agents at scale? Control spending with per-agent budgets, audit trails, and real-time alerts. Never worry about runaway costs.
Workflow Automation Platforms
Building on n8n, Activepieces, or Zapier? Add paid content + tool access to your automation workflows with a single MCP connection.
Researchers & Experimenters
Exploring AI agent capabilities? Sign up, get free credits, and start querying publishers and calling tools immediately. No credit card required.
How It Works
From sign-up to your first tool call in under 5 minutes.
01
Sign Up & Get Free Credits
Create an account at xpay.tools or app.xpay.sh. No credit card required. Free credits to start querying publishers and calling tools immediately.
02
Browse Publishers + Tools
Explore 5,000+ publishers across 22 verticals and 1,000+ API tools from 80+ providers. Filter, compare pricing, and request access to anything you need.
03
Get Your API Key
Generate one API key that works for both publishers and tools. Use it via MCP or REST from any agent framework.
04
Set Spending Controls
Configure per-agent budgets, rate limits, and allowed destinations. Smart Proxy ensures agents never exceed their limits.
05
Agents Query & Pay Per Use
Your agents query publishers and call tools through xpay. Payment is handled automatically per request — no payment plumbing to maintain.
06
Monitor & Optimize
Track spending in real-time. See which publishers and tools your agents use most. Optimize budgets based on actual usage patterns.
// Connect via MCP — access 1,000+ tools instantly { "mcpServers": { "xpay": { "url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY" } } } // Or call tools via REST curl https://mcp.xpay.sh/exa-search \ -H "Authorization: Bearer YOUR_API_KEY" \ -d '{"query": "AI agent frameworks"}'
Use Cases
xpay✦ powers content licensing, agent operations, and API monetization across the agentic economy. Here are some of the ways teams use it today.
Publisher Content Licensing
News orgs, vertical media, and independent publishers license their content to AI agents through xpay’s catalog. Pay-per-query revenue without infrastructure changes.
PublishersAI Search & Answer Engines
Perplexity-style products and AI news readers query xpay for licensed publisher content instead of scraping. Fresh, attributed, compliant.
Agent OperationsAutonomous Research Agents
Research agents that autonomously query publishers, search engines, databases, and knowledge bases without human approval for each request.
Agent OperationsCode Generation Pipelines
Multi-agent systems where code agents pay for compute, testing APIs, and deployment services as part of automated CI/CD.
Agent OperationsContent Creation Workflows
Content agents that pay for image generation, fact-checking services, and publishing APIs autonomously.
Agent OperationsAPI & Tool Monetization
Turn your APIs and MCP servers into revenue streams. Add pay-per-call pricing with a one-line integration — no payment plumbing of your own.
API ProvidersData Marketplace Access
Agents that purchase data feeds, market data, and proprietary datasets programmatically.
Data & AnalyticsML Inference Services
Pay-per-inference for ML models. Agents call specialized models and pay per prediction.
AI/MLCompute Resource Provisioning
Agents that spin up and pay for cloud compute, GPUs, and storage as needed for their tasks.
InfrastructureTranslation & Localization
Translation agents that pay for specialized translation APIs and human review services.
ContentWeb Scraping & Crawling
Agents that pay for anti-bot bypass services, proxy networks, and structured data extraction.
Data CollectionSecurity & Compliance Scanning
Security agents that purchase vulnerability scans, compliance checks, and threat intelligence feeds.
SecurityGlossary
Key terms and concepts used across the xpay✦ platform.
Publisher Catalog (AgentFeed)
xpay's browsable directory of 5,000+ publishers across 22 verticals available for AI agent licensing. Filter by vertical, language, country, paywall, or AI-bot blocking status. Live at /agent-feed/catalog.
Content Licensing
Publishers grant AI agents the right to query their content for a per-query fee. xpay handles the contract, the MCP endpoint, and the payment routing. Publishers keep editorial control.
Tool Discovery
Finding and comparing API tools across providers. xpay's hub (xpay.tools) lets agents browse 1,000+ tools, compare pricing, and call them with a single connection.
Price Discovery
Comparing per-call/per-query pricing across publishers and tools. xpay surfaces cost upfront so agents (and developers) can optimize spend.
MCP (Model Context Protocol)
Anthropic's protocol for connecting AI models to external tools, data sources, and content. xpay is MCP-native: every publisher and tool is an MCP server, accessible via one connection.
MCP Server Monetization
Registering your MCP server on xpay, setting per-tool pricing, and getting a proxy endpoint. AI agents discover and pay for your tools through the hub.
Smart Proxy
xpay's gateway that wraps agent calls with spending controls and automatic payment handling. Enforces per-agent budgets, rate limits, and destination allowlists.
Paywall-as-a-Service
xpay's monetization product that wraps any endpoint or content feed with pay-per-call pricing, enabling publishers and API providers to accept payments from AI agents.
Spending Controls
Configurable limits on agent transactions including per-agent budgets, rate limits, allowed destinations, and time-based restrictions.
Pay-Per-Use Pricing
A billing model where you pay only for what you consume. No subscriptions, no monthly fees. Each query or call is priced individually.
Multi-Protocol Support
xpay routes over MCP (integration), MPP and x402 (payment negotiation), card and stablecoin rails (settlement), REST (fallback), and emerging agent commerce protocols (ACP, AP2, UCP) as the counterparty supports them. You configure once at the xpay layer.
MPP (Machine Payments Protocol)
Stripe's agent-payment protocol announced at Sessions 2026. Supports microtransactions, recurring payments, and stablecoin + fiat acceptance via cards through Shared Payment Tokens on PaymentIntents. xpay routes MPP for agents that need card-rail breadth and Stripe-native flows. mpp.dev.
x402
A web-native payment-negotiation protocol — uses HTTP 402 "Payment Required" responses to settle micropayments between machines. xpay supports x402 alongside MPP and runs a public Facilitator service for it.
Frequently Asked Questions
Common questions about xpay✦ tools, pricing, and monetization.
xpay is a two-sided marketplace and payment layer. Publishers license their content to AI agents through a single MCP endpoint; agent builders get pay-per-use access to 5,000+ publishers and 1,000+ API tools with one account. Smart Proxy adds spending controls so autonomous agents never overspend.
Publishers list their content in xpay’s catalog (AgentFeed at /agent-feed/catalog), set per-query pricing, and earn revenue from AI agent traffic — without changing their CDN, paywalls, or infrastructure. xpay handles the MCP endpoint, the licensing contract, and the payment routing. Publishers keep editorial control and a majority of every dollar.
One API key gives your agents licensed access to thousands of publishers and tools. No bilateral contracts, no scraping in the gray zone, no 10+ subscriptions. Predictable pricing, attribution by default, and spending controls built in.
Sign up at app.xpay.sh or browse the catalog at /agent-feed/catalog — free credits to start, no credit card required. Get an API key, connect via MCP or REST, and start querying publishers and calling tools in minutes.
Every publisher and tool has a per-query/per-call price shown upfront — typically $0.001 to $1.00 per request. You only pay for what you use. No subscriptions, no monthly minimums. Add credits via Stripe (card) or directly.
xpay is protocol-agnostic. MCP is the primary integration layer (every publisher and tool is an MCP server). For payment negotiation we support both MPP (Machine Payments Protocol — Stripe’s standard announced at Sessions 2026, card + stablecoin rails through Shared Payment Tokens) and x402 (HTTP 402 Payment Required, web-native). We also route through agent-issued cards, direct stablecoin rails (Bridge, Tempo), and emerging standards (ACP, AP2, UCP) as they ship. You configure spending policies once at the xpay layer; we pick the rail.
xpay is MCP-native and built around licensed content — not bot deflection or scraping bypass. Publishers join because they get clean revenue and editorial control; agent builders join because they get one account, predictable pricing, and a real catalog with filters. xpay is also multi-protocol (MCP, x402, more) rather than single-protocol.
Register your API or MCP server on xpay, set per-tool pricing, and get a proxy endpoint. AI agents discover your tools through the hub and pay per call. You earn from every call without handling billing yourself.
Smart Proxy is a gateway that wraps agent calls with spending controls. Set per-agent budgets, rate limits, and allowed destinations. If an agent tries to exceed its budget, Smart Proxy blocks the request before any payment is made. All enforcement happens at the edge with sub-200ms latency.
xpay works with any framework that supports MCP or REST APIs — including Claude (via MCP), LangChain, CrewAI, AutoGPT, OpenAI Assistants, n8n, and Activepieces. If your agent can make HTTP calls, it works with xpay.