x402 census · api.babyblueviper.com · b802dd331738 · JSON

POST /prove

live

invinoveritas /prove — a signed, independently-verifiable attestation of a prior execution that anyone recomputes offline to confirm it is untampered. The

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://api.babyblueviper.com/prove

Method POST

Price $0.19 USDC = 193050 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts xrpl:0

payTo 0x161DbdD73D025E9aEdd4918a67c28e5bf9A87Fb9

Seller api.babyblueviper.com

Catalogs cdp (row updated 2026-10-11)

Listed since (lower bound) 2026-10-11 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-11

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-10-11 (catalog-reported, not verified on chain)

Category (keyword rule) identity/trust/kyc

Templated path no

x402Version in catalog 2

Service name / tags invinoveritas · verification, ai-agent, audit, compliance, attestation

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:26:58.587Z

HEAD 402

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header+body

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"193050","payTo":"0x161DbdD73D025E9aEdd4918a67c28e5bf9A87Fb9","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":60,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 yes

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / nginx / none

Latency 163 ms

Error X-PAYMENT header required

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 8

Payments 10

USDC volume $0.23

Median payment $0.02

First / last payment 2026-07-12 / 2026-09-17

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x161DbdD73D025E9aEdd4918a67c28e5bf9A87Fb9

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "action_id": "exec_d2269440c3aacab20ccc",
   "nostr_publish": false
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "proof": {
    "action_id": "exec_…",
    "schema": "invinoveritas.proof.v1",
    "signature_type": "nostr|hmac"
   },
   "status": "success"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.babyblueviper.com/prove' -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/b802dd331738/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b802dd331738"} 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.babyblueviper.com.