Sqlguard

Sqlguard is an x402-native service at https://sqlguard.io, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 3 endpoints listed.

Base

Offers

Offer	Endpoint	Price
V1 Bind Mandate Bind (ABMP BIND) — Exact USDC once; returns Ed25519 PASS cert whose mandate_hash binds the human Intent Mandate to this SQL. Portable check: free POST /v1/gate.	`/m/bz-sqlguard-io/v1/bind`	0.05 USDC
V1 Cert Instant Cert — LEGACY TASTE ONLY Exact $0.05 for ONE mutating SQL PASS/FAIL. OFF TABLE as wealth. Prefer Authorize mutating SQL before execute via Pilot Challenge unlock POST /v1/challenge/unlock $100 (amount 100000000) or Gateway invoice $299/mo. Not a production authorize path.	`/m/bz-sqlguard-io/v1/cert`	0.05 USDC
V1 Session LEGACY Session burst. Exact $0.25 → 10 Ed25519 PASS slots (~30m). Wealth primary: Pilot Challenge unlock POST /v1/challenge/unlock ($100.00). Burn /v1/session/cert → verify → execute. Not lint.	`/m/bz-sqlguard-io/v1/session`	0.25 USDC

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

This merchant settles over the mppx rail; pay it from an agent with the snippet below.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

import { Mppx, evm } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

const mppx = Mppx.create({
  methods: [evm({
    account: privateKeyToAccount(process.env.KEY),
    currencies: [evm.assets.base.USDC],
  })],
})

const res = await mppx.fetch('https://api.meshgateway.co/m/bz-sqlguard-io/v1/bind')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-sqlguard-io/v1/bind
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …