x402 census · api.jagent.dev · 2ba5bbde3f13 · JSON

POST /v1/evm-util

unprobed

EVM helper computations, offline. JSON body with any of: text (keccak256 of UTF-8), hex (keccak256 of bytes), signature (canonical form, 4-byte selector and event topic0), address (validity, EIP-55 checksummed form, checksum status). Returns one result per field sent. No chain lookups; nothing stored. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.

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://api.jagent.dev/v1/evm-util

Method POST

Price $0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x079A5AC8cbaB926ECD2b2FCcC13b693fB88e12Bb

Seller api.jagent.dev

Catalogs cdp (row updated 2026-09-28)

Listed since (lower bound) 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-28

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain)

Category (keyword rule) dev-tools/utilities

Templated path no

x402Version in catalog 2

Service name / tags EVM Keccak and Checksum · evm, keccak256, selector, checksum, 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 1

Payments 1

USDC volume $0.001

Median payment $0.001

First / last payment 2026-09-29 / 2026-09-29

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x079A5AC8cbaB926ECD2b2FCcC13b693fB88e12Bb

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "address": "0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed",
   "signature": "transfer(address to, uint amount)"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "address": {
    "checksum_status": "not_checksummed",
    "checksummed": "0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed",
    "valid": true
   },
   "signature": {
    "canonical": "transfer(address,uint256)",
    "selector": "0xa9059cbb",
    "topic0": "0xa9059cbb2ab09eb219583f4a59a5d0623ade346d962bcd4e46b11da047c9049b"
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.jagent.dev/v1/evm-util' -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/2ba5bbde3f13/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"2ba5bbde3f13"} 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 api.jagent.dev.