AgentPay — Payment Infrastructure for AI Agents

How It Works

Live in 5 minutes

Sign up once. Your AI agent calls the API forever. No agent-facing UI, no crypto, no complexity.

1

Sign up and choose a plan

Pick Starter, Growth, or Scale. Complete checkout with Stripe — takes under two minutes.

2

Get your API key

You'll see your API key immediately after payment. Copy it — we only show it once.

3

Add it to your agent's environment

Set AGENTPAY_API_KEY in your agent's environment or config file.

4

Your agent calls the API

POST /api/payments to pay, POST /api/accept to receive. Both are transactions. Both draw from your monthly quota.

How it flows under the hood

1

Developer signs up, chooses a plan, and pays

2

AgentPay issues an API key — set it as AGENTPAY_API_KEY in the agent's environment

3

Agent calls POST /api/payments or POST /api/accept

4

AgentPay authenticates the key, checks plan limits, and bills overage if needed

5

Transaction recorded, count incremented, outgoing webhooks fired

6

200 OK — transaction_id, accept_id, signed merchant receipt

Features

Built for safe agent commerce

Control how AI agents spend money. Verify and accept payments initiated by AI agents. Everything you need on both sides of every transaction.

🔑

Agent Identity

Each agent gets isolated credentials. One API key per agent, hashed and never stored in plaintext — always know which agent acted.

🎛️

Spending Controls

Plan-based monthly quotas with automatic overage billing. Pause an agent instantly by revoking its key.

📊

Full Audit Ledger

Every transaction logged with timestamp, amount, purpose, and agent identity. Queryable via API or dashboard.

⚡

One API. Two Sides.

Use AgentPay as a payer, a merchant, or both. POST /api/payments to pay, POST /api/accept to receive. Both count as transactions — one quota, one bill.

🔔

Outgoing Webhooks

Register a URL to receive real-time payment.received and payment.sent events. HMAC-signed for authenticity.

⚡

Simple API

One POST request, one JSON response. No SDKs required — works from any language or framework. Idempotency keys included.

AgentPay Accept

The merchant side of agent commerce.

AI agents don't just spend — they pay someone. AgentPay Accept gives that someone a verification layer: confirm the agent is real, capture intent, record approval, and generate a signed receipt.

Every acceptance returns identity, intent, approval status, and a stable accept_id — the building blocks of auditable agent commerce.

Try Accept Demo → Read the API docs

🪪 Identity

Every agent is registered and verified before a transaction is accepted. The agent_id maps to a known, active entity.

🎯 Intent

Capture structured purpose with every payment. Merchants see exactly what the agent intended to pay for — not just an amount.

✅ Approval & Auditability

Record whether a human approved the transaction. Every acceptance generates a signed receipt with a stable accept_id for your records.

Developer-first

One request. Any language. No SDK needed.

Plain HTTP. JSON in, JSON out. Works from Python, Node.js, Go, Ruby, curl — anything that can make an HTTP request.

Get your API key →

// Safely retry with idempotency keys
const res = await fetch('https://agent-pay.pro/api/payments', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${process.env.AGENTPAY_API_KEY}`,
    'Content-Type':   'application/json',
    'Idempotency-Key': `payment-${Date.now()}`  // safe to retry
  },
  body: JSON.stringify({
    to_agent_id: 'agent_abc123',
    amount:      0.50,
    purpose:     'tool usage fee'
  })
});
const { transaction_id, status } = await res.json();

// curl
// curl -X POST https://agent-pay.pro/api/payments \
//   -H "Authorization: Bearer $AGENTPAY_API_KEY" \
//   -H "Idempotency-Key: payment-$(date +%s%N)" \
//   -d '{"to_agent_id":"agent_abc123","amount":0.50}'
            

Pricing

Simple, predictable pricing

No free tier. No surprise fees. Each plan includes a monthly transaction quota — exceed it and overage is billed automatically.

Starter

$29/mo

1,000 transactions / month
(payments + verifications combined)

$0.03 / txn overage

API key authentication
Agent-to-agent payments
Transaction ledger
Stripe billing portal
Email support

Get Started

Growth

$99/mo

10,000 transactions / month
(payments + verifications combined)

$0.01 / txn overage

Everything in Starter
10× transaction volume
Priority support
Virtual cards (coming soon)
Usage analytics

Get Started

Scale

$299/mo

100,000 transactions / month
(payments + verifications combined)

$0.005 / txn overage

Everything in Growth
100× transaction volume
Dedicated support
Custom limits on request
SLA available

Get Started

The payments API for AI agents.

The merchant side of agent commerce.

One request. Any language. No SDK needed.