# Nevermined > Nevermined is the policy and control layer for agent payments. A person approves a spend mandate once; the agent then buys paid APIs and AI services autonomously, by card or crypto, every purchase attributed. Sellers get paid per call over x402 or MPP. This file is the entry point to Nevermined's agent-discoverable surface. If you are an agent that needs to buy something, start with the AI Services Catalog and the Catalog MCP below. A person signs in once; the agent does the rest. If you sell an API, an agent or content, Nevermined gets you paid per call by agents. The list of agent-payable APIs is open: see the seller section below, then get in touch. For the full SDK and API documentation, see the [docs index](https://nevermined.ai/docs/llms.txt). ## Start buying - [AI Services Catalog](https://nevermined.ai/catalog/): Everything your agent can buy besides a model: paid services for search, scraping, enrichment, filings and data (the page shows the live count), at each service's listed price, on one bill. The list is free and public. - [Catalog MCP](https://nevermined.ai/docs/mcp/catalog-mcp/overview.md): A hosted MCP server that lets an agent in any MCP host discover and pay for Catalog services. Connect to `https://mcp.live.nevermined.app/mcp` (sandbox: `https://mcp.sandbox.nevermined.app/mcp`). Discovery needs no key; paying draws on the caller's own spend mandate. - [SDK quickstart](https://nevermined.ai/docs/integrate/quickstart/typescript.md): `npm i @nevermined-io/payments` ยท `pip install payments-py`. Python version: https://nevermined.ai/docs/integrate/quickstart/python.md - [Get a Nevermined API key](https://nevermined.ai/docs/agents-guide/get-api-key.md): A person signs in once; the agent does the rest. The key is captured through a localhost callback, with no copy and paste. - [Enroll a card and set a spend mandate](https://nevermined.ai/docs/agents-guide/enroll-card.md): The agent sets up the card payment method and a capped, time-boxed spend mandate it reuses to pay on its own. - [Agents guide](https://nevermined.ai/docs/agents-guide/overview.md): Prompts that let an agent operate on Nevermined itself: buy plans, enroll cards, get keys, register agents, report on credits and revenue. ## Delegated spend - [Home](https://nevermined.ai/): Agents pay, autonomously. Give your agents a spend mandate; they buy what they need inside it. - [Nevermined Pay](https://nevermined.ai/nevermined-pay/): Delegated spend: enroll a card once, set a spend mandate, and your agent pays merchants on Nevermined by card on Visa Intelligent Commerce (Mastercard Agent Pay coming) or in crypto, never seeing the card number. - [Security](https://nevermined.ai/security/): Nevermined is ISO 27001 certified, SOC 2 Type II audited and PCI SAQ-D compliant. How card data and agent payments are protected, and how to get the reports. ## Platforms - [Platforms](https://nevermined.ai/platforms/): Let each of your users delegate spend to their agents inside your product, under a spend mandate they set. - [AI Services Catalog for Platforms](https://nevermined.ai/catalog/platforms/): Add the AI Services Catalog to your product. Your users' agents buy from a vetted list of paid services, inside a spend mandate each user sets, on one bill. - [Widgets](https://nevermined.ai/solutions/pay-widgets/): Card payments and agent spend mandates inside your product. - [Builder Platforms](https://nevermined.ai/use-cases/builder-platforms/): Take a cut of every transaction your builders process. ## Banks and payment providers - [Banks and payment providers](https://nevermined.ai/enterprise/): You hold the money and the rails; Nevermined supplies the mandate, policy and audit layer, inside your product. ## Sell to agents - [Merchants](https://nevermined.ai/merchants/): Sell to AI agents: get listed in the AI Services Catalog, get paid per call (x402 or MPP) or by card into your own Stripe account. - [API Providers](https://nevermined.ai/use-cases/api-providers.md): Integration notes for letting AI agents buy and top up your API autonomously via x402 card delegation. - [API Providers integration guide](https://nevermined.ai/docs/solutions/api-providers.md): One server-side endpoint, settled on a delegated card via x402. - [API provider integration template](https://nevermined.ai/integrations/api-provider-template.md): A template to fill in for your own API. - [Exa](https://nevermined.ai/docs/integrations/exa.md): Search and retrieval API, live on Nevermined. A person approves a spend mandate once; after that the agent buys and tops up Exa on its own, on every Exa endpoint. No wallet, no stablecoin. - [AI Crawlers](https://nevermined.ai/use-cases/ai-crawlers/): Paid access for bots and agents. Charge for content at internet scale. - [Product](https://nevermined.ai/product/): Payments infrastructure for AI agents. Register, price, accept, settle, track. - [x402](https://nevermined.ai/x402/): x402 for AI agents, and the facilitator that verifies and settles agent payments. - [MPP](https://nevermined.ai/mpp/): The Machine Payments Protocol, a challenge-and-credential payment protocol over HTTP 402. Nevermined supports it alongside x402. - [x402 card-delegation spec](https://nevermined.ai/docs/specs/x402-card-delegation.md): The `nvm:card-delegation` scheme in full. ## Pricing - [Pricing](https://nevermined.ai/pricing/): Free personal account. Catalog credits $20 a month or $10 packs (2,000 free credits to start). Organizations: Starter $50, Premium $250, Enterprise $500 a month. Merchants pay 1-2% of settled volume. ## Docs - [SDK and API docs index](https://nevermined.ai/docs/llms.txt): Every docs page, as Markdown. - [Nevermined App](https://nevermined.app/): Dashboard, plans, API keys, card enrollment. - [Contact](https://nevermined.ai/contact-us/): Talk to the team. ## Optional - [About](https://nevermined.ai/about-us/): Team and mission. - [Glossary: x402](https://nevermined.ai/glossary/x402/): The HTTP `402 Payment Required` protocol for agent payments. - [Glossary: Agentic Commerce](https://nevermined.ai/glossary/agentic-commerce/): What it means for agents to transact. - [Glossary: Agent Payments](https://nevermined.ai/glossary/agent-payments/): Overview of payment patterns for AI agents. - [Stripe vs Nevermined](https://nevermined.ai/compare/stripe-vs-nevermined/): Comparison of agent-payment approaches. - [GitHub](https://github.com/nevermined-io): Open-source SDKs and examples.