x402 census · mpp.tracefast.xyz · 25d600097dc3 · JSON

GET /api/v1/chains/1/entities/:address/counterparties

live

TraceFast knowledge graph: top counterparties of an Ethereum address, current or as of a block. Up to 100 addresses it interacts with most, ranked by successful transactions across top-level calls, internal calls and token transfers, each with transaction counts and first/last block. Path address: 0x-prefixed, 40 hex. Query block: integer, state at the end of this block, absent = current; limit: …

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

Field Value

URL https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/counterparties

Method GET

Price $0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e

Seller mpp.tracefast.xyz

Catalogs cdp (row updated 2026-09-04)

Listed since (lower bound) 2026-09-04 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-04

CDP quality counters 4 calls and 1 unique payers in 30 days, last call 2026-09-04 (catalog-reported, not verified on chain)

Category (keyword rule) other/unknown

Templated path yes: contains :param or {param}; probed as listed

x402Version in catalog 2

Service name / tags TraceFast · blockchain, ethereum, address-intelligence, labels, entities

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field Value

Re-probed at 2026-10-01T01:13:18.000Z (cron)

Verdict now live changed from unprobed

HEAD / GET 402 / 402

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"100000","payTo":"0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Latency 1,416 ms

Error none

On-chain facts for the payTo (public address)

Field Value

Distinct payers 2

Payments 36

USDC volume $2.22

Median payment n/a

First / last payment 2026-09-03 / 2026-09-06

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 0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "pathParams": {
   "address": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97"
  },
  "queryParams": {
   "block": "25000000",
   "limit": "10"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "data": {
    "address": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97",
    "counterparties": [
     {
      "counterparty": "0x51c72848c68a965f66fa7a88855f9f7784502a7f",
      "firstBlock": 23891779,
      "lastBlock": 25897585,
      "receivedTxCount": 2472610,
      "sentTxCount": 0,
      "succeededTxCount": 2472610,
      "surfaces": [
       "internal"
      ]
     }
    ],
    "window": {
     "asOfBlock": 25000000,
     "kind": "block"
    }
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/counterparties' -H 'accept: application/json'

The catalog declares GET. 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/25d600097dc3/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"25d600097dc3"} 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: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on mpp.tracefast.xyz.