x402 census · www.0816.cn · 2d8f4ef974c2 · JSON

POST /v1/base/proxy-upgrade

unprobed

Upgradeable contract and proxy admin check for any EVM contract on Base (POST wrapper, body: {contract}). Reads EIP-1967 implementation, admin and beacon slots directly from chain state. Returns whether the contract can be upgraded, who controls the upgrade, and an upgrade risk verdict. Call when an agent needs to know if a contract owner can silently change its logic. $0.02 USDC

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL http://www.0816.cn/v1/base/proxy-upgrade

Method POST

Price $0.02 USDC = 20000 atomic units of 0xb6ceceab302e2e4948951ee7843fc24e92933061

Network eip155:196 (xlayer)

payTo 0x567047dbd96a12f17e96d4427714a66811be2e11

Seller www.0816.cn

Catalogs payai (row updated 2026-09-16)

Listed since (lower bound) 2026-09-16 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-16

CDP quality counters not in the CDP catalog

Category (keyword rule) trading-signals

Templated path no

x402Version in catalog 2

Service name / tags Sentinel Contract Safety · proxy, upgrade risk, upgradeable contract, admin, eip1967

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 1

Payments 1

USDC volume $0.02

Median payment n/a

First / last payment 2026-09-19 / 2026-09-19

Sampler-shaped share of payments n/a

Payers that are not samplers n/a

Source blockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total

Address 0x567047dbd96a12f17e96d4427714a66811be2e11

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "contract": "0x4200000000000000000000000000000000000006"
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 414
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'http://www.0816.cn/v1/base/proxy-upgrade' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/2d8f4ef974c2/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"2d8f4ef974c2"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: PayAI listing status · this record as JSON · all resources on www.0816.cn.