x402 census · agent402.tools · 32267378ad72 · JSON

POST /api/openapi-required-params

live

For one operation, return the minimum set of inputs an agent must provide to make a successful call. Locate the op by `operationId` (preferred) or by `method`+`path`. Output is a single flat array tagged by `in`: `path` (always required), `query` / `header` / `cookie` (only when `required: true`), and `body.field` entries naming the top-level required fields of a required JSON request body.

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

Facts from the catalogs

Field Value

URL https://agent402.tools/api/openapi-required-params

Method POST

Price $0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts eip155:137, eip155:42161, eip155:143, eip155:43114, eip155:1329, eip155:10, eip155:4663, eip155:42220, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet

payTo 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0

Seller agent402.tools

Catalogs cdp (row updated 2026-09-30), payai (row updated 2026-07-01)

Listed since (lower bound) 2026-07-01 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-30

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-21 (catalog-reported, not verified on chain)

Category (keyword rule) dev-tools/utilities

Templated path no

x402Version in catalog 2

Service name / tags OpenAPI required-params · conversion, openapi, swagger, required, params

Unpaid probe (census of 2026-09-30)

Field Value

Probed at 2026-09-30T23:49:40.511Z

HEAD 402

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in body

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"2000","payTo":"0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"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 no

WWW-Authenticate offer Payment id="ICBVR5n-hGmvk-Rq-y_C_EiiSyJB

Content type / server / CORS application/json / railway-hikari / *

Latency 1,570 ms

Error Payment 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 120

Payments 1,253

USDC volume $12.29

Median payment $0.003

First / last payment 2026-06-18 / 2026-09-30

Sampler-shaped share of payments 61.8%

Payers that are not samplers 2

Source forensics-2026-09-30

Address 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "operationId": "createUser",
   "spec": {
    "openapi": "3.0.0",
    "paths": {
     "/users": {
      "post": {
       "operationId": "createUser",
       "requestBody": {
        "content": {
         "application/json": {
          "schema": {
           "properties": {
            "email": {
             "type": "string"
            },
            "nickname": {
             "type": "string"
            },
            "password": {
             "type": "string"
            }
           },
           "required": [
            "email",
            "password"
           ],
           "type": "object"
          }
         }
        },
        "required": true
       },
       "responses": {
        "201": {}
       }
      }
     },
     "/users/{id}": {
      "get": {
       "operationId": "getUser",
       "parameters": [
        {
         "in": "path",
         "name": "id",
         "required": true,
         "schema": {
          "type": "string"
         }
        },
        {
         "in": "query",
         "name": "verbose",
         "required": false,
         "schema": {
          "type": "boolean"
         }
        },
        {
         "in": "header",
         "name": "X-Trace-Id",
         "required": true,
         "schema": {
          "type": "string"
         }
        }
       ],
       "responses": {
        "200": {}
       }
      }
     }
    }
   }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "bodyContentType": "application/json",
   "hasBody": true,
   "method": "POST",
   "operationId": "createUser",
   "path": "/users",
   "required": [
    {
     "in": "body.field",
     "name": "email",
     "type": "string"
    },
    {
     "in": "body.field",
     "name": "password",
     "type": "string"
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agent402.tools/api/openapi-required-params' -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/32267378ad72/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"32267378ad72"} 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: PayAI listing status · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on agent402.tools.