x402 census · blockrun.ai · 3de6b51310fa · JSON

POST /api/v1/rpc/ethereum

method-gated

Multi-chain JSON-RPC passthrough fronted by BlockRun, powered by Tatum's gateway across 40 chains (Ethereum, Base, Solana, Polygon, BSC, Arbitrum, Optimism, Avalanche, Bitcoin, Sui, and more). One endpoint, every chain, pay-per-call in USDC, no API key. $0.002 per call (or per element of a JSON-RPC batch). Network: Ethereum.

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://blockrun.ai/api/v1/rpc/ethereum

Method POST

Price $0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0xe9030014F5DAe217d0A152f02A043567b16c1aBf

Seller blockrun.ai

Catalogs cdp (row updated 2026-10-14)

Listed since (lower bound) 2026-10-14 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-14

CDP quality counters 3 calls and 2 unique payers in 30 days, last call 2026-10-14 (catalog-reported, not verified on chain)

Category (keyword rule) inference/llm

Templated path no

x402Version in catalog 2

Service name / tags BlockRun.AI · ai, inference, llm, gateway

Unpaid probe (census of 2026-10-22)

Field

Value

Probed at

2026-10-22T00:19:54.404Z

HEAD

405

GET

405

Verdict

method-gated 405/400: the 402 sits behind the declared method

402 carried in

n/a

x402Version in the 402

n/a

accepts[0]

none

Live amount equals catalog price

not comparable

Live payTo equals catalog payTo

not comparable

extensions.bazaar in the 402

PAYMENT-REQUIRED header

WWW-Authenticate offer

none

Content type / server / CORS

text/html / cloudflare / none

Latency

232 ms

Error

none

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 113

Payments 975

USDC volume $22.79

Median payment $0.003

First / last payment 2026-05-18 / 2026-09-30

Sampler-shaped share of payments 98.7%

Payers that are not samplers 2

Source forensics-2026-09-30

Address 0xe9030014F5DAe217d0A152f02A043567b16c1aBf

Declared input and output (extensions.bazaar)

{
 "input": {
  "bodyFields": {
   "id": {
    "description": "JSON-RPC id",
    "type": [
     "string",
     "number"
    ]
   },
   "jsonrpc": {
    "description": "\"2.0\"",
    "type": "string"
   },
   "method": {
    "description": "Chain RPC method, e.g. eth_blockNumber, eth_call, eth_getBalance (EVM) or getSlot, getAccountInfo (Solana).",
    "type": "string"
   },
   "params": {
    "description": "Method-specific params.",
    "type": "array"
   }
  },
  "discoverable": true,
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "id": "",
   "jsonrpc": "",
   "result": {}
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://blockrun.ai/api/v1/rpc/ethereum' -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/3de6b51310fa/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"3de6b51310fa"} 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 blockrun.ai.