Base Tx Explain

Name: Base Tx Explain
Price: 0.005 USDC
Availability: InStock

Transaction Decoder: Base tx decoded -- status, transfers, swaps, USD value. Returns: a decoded transaction: status (pending, confirmed, reverted or not_found), block, from and to, value and fee in ETH and USD (Chainlink ETH/USD), and its decoded logs -- ERC-20 and ERC-721 transfers with symbol, amount and USD where priced, approvals (unlimited flagged), WETH wraps and DEX swap events -- plus a one-line summary. Deterministic decoding of the receipt, no model; a mined answer is cached.

InferenceLiveeip155:8453Exactvia cdp

https://api.arysphere.com/v1/ventures/x402_eth_reads_v1/base_tx_explain

TransactionDecoderTransfersSwapsBase

Calls · 30d

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.

$0.79

Verified settled volume

253 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0050

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-10-24 03:27Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "payment required: retry with a PAYMENT-SIGNATURE header built from one of `accepts`",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://api.arysphere.com/v1/ventures/x402_eth_reads_v1/base_tx_explain",
      "description": "Explain this tx: Base transaction decoded -- status, transfers, swaps, approvals, USD value. Returns: a decoded transaction: status (pending, confirmed, reverted or not_found), block, from and to, value and fee in ETH and USD (Chainlink ETH/USD), and its decoded logs -- ERC-20 and ERC-721 transfers with symbol, amount and USD where priced, approvals (unlimited flagged), WETH wraps and DEX swap events -- plus a one-line summary. Deterministic decoding of the receipt, no model; a mined answer is c",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 60
    }
  ],
  "example": {
    "how": "base64(JSON.stringify(x_payment)) in the X-PAYMENT request header; sign the EIP-3009 transferWithAuthorization with the asset's extra.name/extra.version domain on chain 8453",
    "x_payment": {
      "scheme": "exact",
      "network": "base",
      "payload": {
        "signature": "<0x EIP-712 signature>",
        "authorization": {
          "to": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
          "from": "<buyer address>",
          "nonce": "<0x 32 random bytes>",
          "value": "5000",
          "validAfter": "<unix s, now-60>",
          "validBefore": "<unix s, now+maxTimeoutSeconds>"
        }
      },
      "x402Version": 1
    },
    "requirements": {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
      "scheme": "exact",
      "network": "base",
      "maxAmountRequired": "5000"
    }
  },
  "x402Version": 1
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.005USDC≈ $0.005 USD

on Base · exact scheme

Pay 0.005 USDC on Base to 0x7775…4D2f6. The signed payment is good for 1 minute.

Paid to: 0x7775…4D2f6
USD Coin contract: 0x8335…02913
Payment window: 1 minute
As published: 5000 smallest units

5000units

on Polygon · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 0x7775…4D2f6
Token contract: 0x3c49…c3359
Payment window: 1 minute

5000units

on Arbitrum · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 0x7775…4D2f6
Token contract: 0xaf88…e5831
Payment window: 1 minute

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:137",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7775dfcF6f8B2A0a4Aa4B50B78eAf88351e4D2f6",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:42161",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "hash": "0x6ec0cc1f3124bc3b7f1f070d7c73d9ddb8104f79e2602d8cac4dbaa5f4c68ea9"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "chain": "base",
          "cached": false,
          "method": "explain",
          "result": {
            "to": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
            "from": "0x2c2e035d20cd6da1664a7cf0eaf98e3647607304",
            "hash": "0x7250ea109382c1c23d3209c766f8a04ca749c17cf9f2ebc2963ac19b56e9966c",
            "block": 52718625,
            "swaps": [
              {
                "dex": "uniswap_v3_shape",
                "pool": "0x0abe41c8aaa9282429e06ebed48be36298981d94"
              }
            ],
            "wraps": [],
            "status": "confirmed",
            "eth_usd": 2430.46003758,
            "fee_eth": "0.000003059537476466",
            "fee_usd": 0.0074,
            "summary": "Confirmed in block 52718625; moved 4194.908918312848701351 RECALL, 164.78 USDC; 1 swap(s); 1 approval(s); fee $0.0074.",
            "approvals": [
              {
                "owner": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
                "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
                "amount": "164.78",
                "symbol": "USDC",
                "spender": "0x698cb2b6dd822994581fea6ea4fc755d1363a92f",
                "unlimited": false
              }
            ],
            "rpc_calls": 5,
            "transfers": [
              {
                "to": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
                "usd": 162.62,
                "from": "0x0abe41c8aaa9282429e06ebed48be36298981d94",
                "token": "0x1f16e03c1a5908818f47f6ee7bb16690b40d0671",
                "amount": "4194.908918312848701351",
                "symbol": "RECALL",
                "usd_basis": "uniswap v3 deepest-pool spot"
              },
              {
                "to": "0x0abe41c8aaa9282429e06ebed48be36298981d94",
                "usd": 164.78,
                "from": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
                "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
                "amount": "164.78",
                "symbol": "USDC",
                "usd_basis": "dollar stablecoin"
              }
            ],
            "truncated": false,
            "value_eth": "0",
            "value_usd": 0,
            "logs_total": 5,
            "other_logs": 1,
            "nft_transfers": [],
            "eth_usd_source": "chainlink ETH/USD 0x71041dddad3595f9ced3dccfbe3d1f4b0a16bb70",
            "method_selector": "0x708909ad",
            "contract_created": null
          },
          "service": "x402_eth_reads_v1.base_tx_explain"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "hash": {
                  "type": "string",
                  "description": "transaction hash, 0x + 64 hex"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-10-24 03:27Z
Last indexed by Roundhouse: 2026-10-25 12:30Z
Last enriched (probe, favicon, geo): 2026-10-24 00:45Z
x402 version: 2
Max timeout: 60s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service Base Tx Explain and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Base%20Tx%20Explain'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.arysphere.com/v1/ventures/x402_eth_reads_v1/base_tx_explain, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.