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For crypto-native agents and developers, Rekko supports x402 — the HTTP 402 payment protocol. Pay per request with USDC stablecoins on Base L2 instead of subscribing.

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How it works

  1. Make a request without an API key
  2. Rekko returns HTTP 402 Payment Required with a payment envelope
  3. Your x402 client automatically pays the USDC amount and retries
  4. The response comes back as normal

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Pricing

Per-call pricing matches the subscription tiers:
TierUSDC per call
LISTING$0.01
INSIGHT$0.10
STRATEGY$2.00
DEEP$5.00

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Setup

1

Fund a wallet on Base L2

You need a wallet with USDC on Base (Coinbase’s L2 network). Bridge from Ethereum mainnet or purchase directly.
2

Install an x402 client

Use any x402-compatible HTTP client. The protocol is an open standard.
3

Make requests

Point your client at https://api.rekko.ai — payments are handled automatically per request.

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When to use x402

  • No subscription commitment — pay only for what you use
  • Agent-native — autonomous agents can self-fund from a wallet
  • Pseudonymous — no email signup required
  • Composable — works alongside other x402-enabled APIs

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When to use a subscription instead

If you make more than ~100 LISTING calls per month, the Free tier is more cost-effective. For heavy usage, the Pro plan ($49/mo) includes thousands of calls.