Every payment leaves a dot.

PayGate wraps any HTTP endpoint in an x402 paywall. Callers pay per call in USDC, from $0.0005 to $0.02. Settlement lands on Arc in under a second, stamped on-chain, permanent.

curl the 402 → see the flow →

Endpoints live

<1s

Settlement

$0.0005

Entry / call

20/20

Quality pass

dither ledger · live arc rpc · 5042

connecting to arc rpc — reading live settles…

initialising…—

01 / the flow

Three steps. No checkout page.

The client is a wallet, the invoice is an HTTP status code. This is the exact exchange a machine makes to buy a live endpoint.

no contract deploys
no invoice
no key saved anywhere

terminal — paygatex402.com

Wrap

Point PayGate at any HTTPS endpoint and set a USDC price. Unpaid traffic never reaches your upstream.

Call

The caller gets HTTP 402, signs an EIP-3009 authorisation for that exact amount, and retries. No account, no session.

Settle

Circle's Facilitator verifies first, delivers the response, then settles on Arc in under a second, straight to your payout wallet.

Compound · next

Roadmap: seller float supplied to Aave V4 as USDC collateral. Not live; we will not claim it until it ships.

02 / the ledger

Endpoints for sale

Every listing answers right now at paygatex402.com. Unauthenticated calls return the 402 challenge with the exact price.

prices in USDC / call
settled on arc

full machine-readable spec: /openapi.json ↗

03 / for agents

Your agent finds PayGate on its own.

Four discovery files expose the whole marketplace to any autonomous client: no human, no sign-up, no API key.

x402

x402 resource manifest/.well-known/x402

The canonical discovery document: every paid resource with scheme, network and price.

OA3

OpenAPI 3.0.3 spec/openapi.json

20 endpoints, correct verbs, per-call amounts and categories, generated live from the pricing table.

A2A

A2A agent card/.well-known/a2a.json

Agent-to-agent card with skills and worked examples for agent frameworks.

PLG

AI plugin manifest/.well-known/ai-plugin.json

Manifest for AI tool registries and plugin stores.

# any HTTP client becomes a paying customer in one round-trip curl -i https://paygatex402.com/api/x402/crypto-prices # → 402 with the exact invoice: { "scheme": "exact", "network": "eip155:5042", "maxAmountRequired": "1000", # 0.001 USDC, base units "payTo": "0x5760…43D" } # sign EIP-3009 → retry with X-PAYMENT header → HTTP/1.1 200 OK x-payment-response: {"success":true,"transaction":"0x…"}

04 / trust

Audited activity, not assertions.

verify-then-settle
stamped on-chain

✓

Verified fills

Payment is verified before the resource delivers, and settled only after confirmation. A quality pass scored the live surface 20/20.

ᚠ

Attribution on-chain

Every settled fill is stamped to the PayGateStamp contract on Arc, so credit accrues to the wallet that earned it. Nothing is self-reported.

Every call pays.
Every payment is on-chain.

open the live site →