x402 census · ari001.tailb4ac3a.ts.net · a60232c236ff · JSON

GET /v1/ventures/ethereum_contract_abi_service/erc20_allowance

unprobed

Returns the amount of ERC-20 tokens that a spender is allowed to withdraw from an owner's account. Provide token (ERC-20 contract address), owner (owner address), and spender (spender address). Query: token (ERC-20 contract, 0x + 40 hex), owner (0x + 40 hex), spender (0x + 40 hex).

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 https://ari001.tailb4ac3a.ts.net/v1/ventures/ethereum_contract_abi_service/erc20_allowance

Method GET

Price $0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts eip155:137, eip155:42161

payTo 0xB799d3Be2F79021bD698F770bd809C296EE754a2

Seller ari001.tailb4ac3a.ts.net

Catalogs cdp (row updated 2026-09-25)

Listed since (lower bound) 2026-09-25 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-25

CDP quality counters 5 calls and 1 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain)

Category (keyword rule) money-movement

Templated path no

x402Version in catalog 2

Service name / tags ERC-20 Allowance · erc20, allowance, read, ethereum

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 2

Payments 46

USDC volume $0.21

Median payment n/a

First / last payment 2026-09-23 / 2026-09-25

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 0xB799d3Be2F79021bD698F770bd809C296EE754a2

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
   "spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3",
   "token": "0xdAC17F958D2ee523a2206206994597C13D831ec7"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "chain": "ethereum",
   "method": "allowance",
   "ok": true,
   "result": "1000000",
   "service": "ethereum_contract_abi_service.erc20_allowance"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://ari001.tailb4ac3a.ts.net/v1/ventures/ethereum_contract_abi_service/erc20_allowance' -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/a60232c236ff/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a60232c236ff"} 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 ari001.tailb4ac3a.ts.net.