Agent Exchange x402 census and directory

x402 census · ausca.com · 01875b5a820f · JSON

POST /v1/extend-inbox

unprobed

Add purchased time to the current expiry of one active receive-only inbox. The same inbox id, address, messages, read/delete capability, and limits remain in place. Deleted or expired inboxes cannot be revived, and prepaid expiry cannot exceed 30 days from the extension time.

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://ausca.com/v1/extend-inbox
MethodPOST
Price$0.05 USDC = 50000 atomic units of 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
Networkeip155:8453 (base)
payTo0x26572ff23c6c52bfb1a69cb0c9114a8be443b422
Sellerausca.com
Catalogscdp (row updated 2026-09-30)
Listed since (lower bound)2026-09-30 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-30
CDP quality counters32 calls and 2 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain)
Category (keyword rule)gift-cards/commerce
Templated pathno
x402Version in catalog2
Service name / tagsAusca Agent Inbox · email, extension, inbox, receive-only

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 payers2
Payments50
USDC volume$8.45
Median paymentn/a
First / last payment2026-09-27 / 2026-09-30
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
Address0x26572ff23c6c52bfb1a69cb0c9114a8be443b422

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "idempotency_key": "ausca-x402-discovery-example",
   "input": {
    "additional_duration_seconds": 86400,
    "expected_expires_at": "2026-09-01T01:00:00.000Z",
    "extension_authorization": "aue_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
    "inbox_id": "inb_0123456789abcdef0123456789abcdef01234567"
   },
   "input_schema_digest": "sha256:f19bd6463ce1c5123385231dd60984264a5a94587383e1351083817dcc1cba4f",
   "offer_id": "inbox.extend",
   "offer_revision": "extend-duration-r3",
   "offer_revision_digest": "sha256:99391570fee1ffa5752f5c02582e773fbf9f96d379f9e5859ef9d24af58d6832",
   "output_schema_digest": "sha256:4ac04a385731095a6fa7f1de251456ee3da396fe6a1876483b36eadd23fad09c"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 973
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://ausca.com/v1/extend-inbox' -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/01875b5a820f/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"01875b5a820f"} 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 ausca.com.