Exa + Nevermined: The First Live Autonomous Agent Real-Time Search Purchase

Today marks a shift in how AI agents access the internet. Exa, the AI-native search infrastructure company, has partnered with Nevermined to enable autonomous agent-to-service payments.

What is Exa?

Exa is building search infrastructure specifically designed for AI agents. Unlike traditional search engines optimized for human browsing, Exa's platform:

• Indexes millions of high-quality articles and data points optimized for AI consumption
• Powers AI search for industry-leading tools like Cursor and Notion
• Enables agents to navigate the internet the way humans do, but faster, smarter, and at scale
• Delivers higher quality results with over 90% fewer tokens, significantly reducing operational costs

Exa supports hundreds of companies building agent-first applications, providing the real-time intelligence layer agents need to reason effectively and achieve higher accuracy.

What Changed: Exa Now Accepts Delegated Credit Cards

Through Nevermined's x402 card-delegation protocol, AI agents can now autonomously purchase Exa search access using standard Visa or Mastercard credit cards.

The autonomous workflow:

1. Agent needs real-time web data
2. Agent discovers Exa supports autonomous payments via llms.txt
3. Agent accesses card delegation and payment instructions from https://exa.ai/docs/integrations/nevermined.md
4. Agent evaluates pricing ($7 provisions or tops up API access)
5. Agent purchases access with delegated card within your preset spending limits
6. Agent receives API key instantly
7. Agent searches Exa's index of millions of articles

Zero pauses. Zero manual provisioning. Full autonomy within the guardrails you set.

The Problem: AI Agents That Can't Complete Purchases

AI agents are getting more useful. Your research agent can analyze market trends. Your coding assistant can write complex systems and then debug the code. Your analyst bot can extract insights from vast datasets.

But there's a fundamental limitation stopping them from being truly autonomous: they can't buy the services and additional capabilities that they need.

Today's workflow looks like this:

1. Agent identifies it needs a capability (real-time data, API access, specialized tools)
2. Agent pauses and waits (after maybe prompting you to buy the service)
3. You manually purchase API access
4. You retrieve the access credentials
5. You configure the agent with the access credentials
6. Agent finally resumes work

This breaks autonomy at the most critical moment. Your agent can reason, plan, and execute, but it gets stuck the moment it needs to transact and pay.

The Solution: Delegated Credit Cards for AI Agents

What if your agent could complete the entire workflow independently?

Imagine this: your agent is mid-task, realizes it needs real-time web search capabilities. It discovers Exa's Search API, evaluates the pricing, confirms it fits within your pre-set spending limits, purchases $7 of access using a delegated credit card, receives an API key instantly, and continues working.

Zero human intervention. Full autonomy within your guardrails.

This is autonomous agentic commerce, and it's live in production today with Exa.

How It Works: Technical Implementation

For Developers

Implementation takes under 5 minutes using Nevermined's SDK:

import { Payments } from "@nevermined-io/payments";

const EXA_PLAN_ID = "27800462147494506865542649899724877617306579171265399959488097895839186996870";

const payments = Payments.getInstance({
  nvmApiKey: process.env.NVM_API_KEY!,  // your Nevermined API key
  environment: "live",
});

// 1. Mint x402 token scoped to an enrolled card
const { accessToken } = await payments.x402.getX402AccessToken(
  EXA_PLAN_ID,
  undefined,
  {
    scheme: "nvm:card-delegation",
    delegationConfig: {
      providerPaymentMethodId: "pm_...",  // Stripe/Credit Card payment method, enrolled in Nevermined
      spendingLimitCents: 1000,           // >= $7 purchase
      durationSecs: 3600,
    },
  },
);

// 2. Exchange the token for (or top up) an Exa API key
const res = await fetch(
  "https://admin-api.exa.ai/team-management/nevermined/purchase-key",
  { method: "POST", headers: { "payment-signature": accessToken } },
);
const { apiKey } = await res.json();

// 3. Use the key like any Exa API key
await fetch("https://api.exa.ai/search", {
  method: "POST",
  headers: { "x-api-key": apiKey, "Content-Type": "application/json" },
  body: JSON.stringify({ query: "..." }),
});

Full documentation: Exa Nevermined Integration.

For AI Buyers and Companies

This works with your existing credit cards:

• Standard Visa or Mastercard cards through Stripe or any payment processor you already use.
• Delegated cards with enterprise-grade controls:
  • Spending limits (per transaction, daily, monthly)
  • Merchant category restrictions
  • Transaction approval rules
  • Real-time monitoring and alerts

You maintain full visibility through your existing card infrastructure. Your agent operates within boundaries you define.

Why This Matters: Three Perspectives

For Developers: Build Truly Autonomous Workflows

Your research agents, coding assistants, and market intelligence tools can now:

• Discover and purchase real-time data sources when needed
• Access specialized APIs mid-task without interruption
• Scale operations without manual credential management
• Operate 24/7 without waiting for human provisioning
• Use a payment method you already know: credit cards.

For Enterprises: Leverage Existing Infrastructure

• Deploy agentic workflows using corporate credit cards you already manage
• Apply existing compliance controls and spending policies
• Gain visibility into agent spending through standard card reporting
• Enable innovation without introducing new payment systems or security risks

For the Ecosystem: A New Merchant Class

Exa becomes the first merchant in a new class: services that accept payment directly from AI agents.

For merchants selling APIs, data access, or digital infrastructure, this solves a critical acceptance problem. Until now, you couldn't take payment from an agent, even if they wanted to buy. The payment rails simply didn't exist.

Now they do, using the same payment infrastructure (Visa, Mastercard, Stripe) you already accept.

The Blueprint for Agentic Commerce

This partnership establishes the pattern for autonomous agent-to-service transactions:

1. Service providers list payment instructions in machine-readable format (llms.txt)
2. Agents discover services, evaluate pricing, and assess fit for their assigned tasks
3. Agents transact autonomously using delegated credit cards with human-defined guardrails
4. Instant provisioning via API. Agents receive credentials and continue working
5. Merchants accept payment through existing payment processors. No infrastructure changes required

This is not theoretical. This is live in production, processing real transactions today.

What This Unlocks: The Agentic Internet

For the first time, AI agents aren't just tools we operate. They're autonomous actors that can discover and purchase the infrastructure they need to complete assigned work.

Exa's search gives agents access to the open web at a scale and speed no human could match. Now they can buy that access themselves.

This is how the internet becomes accessible to a new type of user:

• Agents that don't pause for permission
• Agents that don't wait for humans to complete purchases
• Agents that operate with true autonomy within guardrails you control

And merchants gain access to a customer class that didn't exist before: autonomous AI agents with purchasing power.

Getting Started

For developers building with Exa:

1. Review the Nevermined integration documentation
2. Set up your Nevermined API key at nevermined.app
3. Enroll a payment method for card delegation
4. Implement the 5-minute integration
5. Deploy autonomous agents that don't stop

For merchants interested in accepting agent payments:

• Contact Nevermined to explore autonomous payment acceptance
• Learn about the x402 card-delegation protocol
• Join the emerging ecosystem of agent-accessible services

The Future of Autonomous Commerce

Exa is the first infrastructure partner proving this works in production. But this is just the beginning.

As AI agents become more capable, they'll need access to an expanding universe of services: real-time data feeds, specialized computation, domain expertise, creative tools, and infrastructure services.

The merchants who enable autonomous access early will capture value from an entirely new buyer segment. The developers who build agents with true purchasing autonomy will unlock capabilities impossible in today's manual-provisioning world.

The internet is unlocking for AI. And agents can now participate as autonomous actors.

Live in production. More coming soon.

Ready to build agents that don't pause? Start with Exa + Nevermined →

Frequently Asked Questions

Do I need cryptocurrency to use this?

No. This works with standard Visa/Mastercard credit cards through Stripe or any payment processor you already use.

How do I maintain control over agent spending?

You set spending limits, merchant restrictions, and transaction rules when issuing the delegated card. Agents can only operate within those boundaries.

What happens when my agent's API key runs out of credits?

Exa returns HTTP 429. Your agent can autonomously purchase another $7 of credits using the same delegated card workflow.

Is this compliant with our corporate card policies?

Yes. This uses standard card delegation mechanisms. Your existing compliance controls, spending policies, and reporting infrastructure all apply.

Can any merchant accept payments this way?

Currently, this requires integration with Nevermined's x402 protocol. Contact Nevermined to explore enabling autonomous agent payments for your service.

How long does implementation take?

Under 5 minutes. Full documentation is available at https://exa.ai/docs/integrations/nevermined.

About Exa

Exa is building search infrastructure for AI agents, indexing millions of high-quality articles and data points optimized for AI consumption. Exa powers AI search for Cursor, Notion, and hundreds of companies building agent-first applications.

About Nevermined

Nevermined builds payment infrastructure for AI agents, enabling autonomous transactions through delegated credit cards and the x402 protocol. Nevermined's platform provides enterprise-grade controls for agentic commerce.