PayAI PayAI Facilitator

Solana‑first, multi‑network facilitator.

Process x402 payments across Solana and EVM networks with one drop‑in endpoint. No API keys, no blockchain headaches—just plug and play.

Facilitator URL
Start in 2m Docs Live support
Network fees covered for buyers & merchants
No API keys required
Drop‑in setup
Point your merchant at the facilitator and you’re done.
  1. 1.Set FACILITATOR_URL= in your server.
  2. 2.Choose a network:
    solana, solana-devnet, base, base-sepolia,
    polygon, polygon-amoy, avalanche, avalanche-fuji,
    sei, sei-testnet, peaq, iotex.
  3. 3.Ship. The facilitator verifies & settles payments on your behalf.
Solana Base Avalanche Polygon Sei IoTeX Peaq

Features

Multi‑network
Solana‑first, with EVM support (Base, Avalanche, Sei, IoTeX).
Point one endpoint at many chains. The facilitator abstracts network quirks so your server doesn’t have to.
Any token
ERC‑20 on EVM; SPL & Token‑2022 on Solana.
Use stablecoins or your own tokens. Configure per‑endpoint pricing in fiat or atomic units.
Gasless experience
No blockchain fees for buyers or merchants.
The facilitator covers network fees and handles verification/settlement so you can focus on your product.
1‑second start
No API keys. Just plug & play.
Start with a single env var and standard endpoints (/verify, /settle, /list).
Consistent API
One simple interface across networks.
You get reliability, observability, and reuse across multiple merchants and apps.
Built for scale
Designed for human & agentic use‑cases.
From pay‑per‑call APIs to AI agents, settle payments in under a second when the chain confirms.

Merchants

Express Quickstart

Get started with Express.js in minutes.

Hono

Quickstart for building an x402-enabled server with Hono.

All Server Options

Explore all available server frameworks.

Clients

Axios Client

TypeScript client with Axios for HTTP requests.

Fetch Client

TypeScript client using native Fetch API.

All Client Options

Explore all available client frameworks.

Try it for free

Echo Merchant

Test the complete payment flow with our demo merchant.

Echo Merchant Docs

Learn how the demo merchant works under the hood.

Pricing

Most popular
FREE
  • 100,000 settlements per month
  • 4 requests per second
  • 480 burst requests per minute
0 PAYAI
Default plan
Coming soon
BASIC
  • 500,000 settlements per month
  • 10 requests per second
  • 1200 burst requests per minute
$1500 worth of PAYAI
Coming soon
Coming soon
PRO
  • 1M settlements per month
  • 25 requests per second
  • 3000 burst requests per minute
$2800 worth of PAYAI
Coming soon
Documentation
Everything you need to integrate x402 with PayAI.
Facilitator Overview Quickstart Supported Networks Client Guide
Support
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