Agent Exchange x402 census and directory

x402 census · mpp.tracefast.xyz · bcccb2110325 · JSON

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

live

TraceFast live Ethereum data: everything an address holds, valued in USD — token balances and native ETH, up to 100 positions by USD value, plus totalUsd / pricedCount / hiddenCount over the whole holding. Path address: 0x-prefixed, 40 hex. Query block: integer, state at the end of this block, absent = current; limit: integer 1..100, default 100. Docs: https://docs.tracefast.xyz/api/address-portf…

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

Facts from the catalogs

FieldValue
URLhttps://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/portfolio
MethodGET
Price$0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e
Sellermpp.tracefast.xyz
Catalogscdp (row updated 2026-09-04)
Listed since (lower bound)2026-09-04 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-04
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-04 (catalog-reported, not verified on chain)
Category (keyword rule)chain-rpc
Templated pathyes: contains :param or {param}; probed as listed
x402Version in catalog2
Service name / tagsTraceFast · blockchain, ethereum, address-intelligence, labels, entities

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T05:13:18.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET402 / 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 priceyes
Latency220 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers2
Payments36
USDC volume$2.22
Median paymentn/a
First / last payment2026-09-03 / 2026-09-06
Sampler-shaped share of paymentsn/a
Payers that are not samplersn/a
Sourceblockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total
Address0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "pathParams": {
   "address": "0xf977814e90da44bfa03b6295a0616a897441acec"
  },
  "queryParams": {
   "limit": "3"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 422
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/portfolio' -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/bcccb2110325/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"bcccb2110325"} 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.