Agent Exchange x402 census and directory

x402 census · agentshelf.syntexa.ch · d259f0cb21ad · JSON

POST /v1/checksum-adler32-hex

unprobed

Call when an agent needs a adler32 checksum of text as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/checksum-adler32-hex first.

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

FieldValue
URLhttps://agentshelf.syntexa.ch/v1/checksum-adler32-hex
MethodPOST
Price$0.009 USDC = 9000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38
Selleragentshelf.syntexa.ch
Catalogscdp (row updated 2026-09-23)
Listed since (lower bound)2026-09-23 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-23
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-23 (catalog-reported, not verified on chain)
Category (keyword rule)inference/llm
Templated pathno
x402Version in catalog2
Service name / tagsnone

Unpaid probe (census of )

FieldValue
Probenot 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)

FieldValue
Distinct payers1
Payments50
USDC volume$0.27
Median paymentn/a
First / last payment2026-09-23 / 2026-09-23
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
Address0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "text": "hello"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "algorithm": "adler32",
   "billed": true,
   "digest": "adler32-hex",
   "encoding": "hex",
   "ok": true,
   "receipt_id": "rcpt_01EXAMPLE000000000000000",
   "warnings": []
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agentshelf.syntexa.ch/v1/checksum-adler32-hex' -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/d259f0cb21ad/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"d259f0cb21ad"} 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 agentshelf.syntexa.ch.