Index onlineMerchant portal
Api Endpoint

TraceFast

TraceFast live Ethereum data: the implementations a proxy contract has been observed delegating to — from its EIP-1167 bytecode, its EIP-1967 implementation or beacon slot, or its OpenZeppelin v1 slot — newest first, each with the blocks it was seen at and whether it has since been replaced. Path address: The proxy contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-proxy.md

Open interactive test console

Offering

Provider
mpp.tracefast.xyz
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/proxy
MIME type
application/json
First seen
2026-10-16T01:52:13.818Z
Last seen
Tags
blockchain, Ethereum, address-intelligence, labels, entities

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e"
  }
]

Observed health

Status
Healthy
Latest latency
164 ms
Average latency
403 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "method": "GET",
  "pathParams": {
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "queryParams": {},
  "type": "http"
}

Output schema

{
  "type": "json",
  "example": {
    "data": {
      "chainId": 1,
      "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
      "implementations": [
        {
          "implementation": "0x43506849d7c04f9138d1a2050bbf3a0c054402dd",
          "source": "storage_oz_v1",
          "proxyFamily": "unknown",
          "confidence": 1,
          "firstSeenBlock": 18963716,
          "lastSeenBlock": 18963716,
          "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
          "isSelfDelegation": false,
          "supersededBy": null,
          "slotLastEvent": {
            "kind": "upgrade",
            "blockNumber": 18963716,
            "txHash": "0xae3ad89e569f27d47a8a02999a6d937c12aaa6bc50e66650e7cbd3244bde9951"
          }
        }
      ]
    }
  }
}