Roundhouse

base-storage

Read a contract storage slot on Base mainnet via eth_getStorageAt - the raw 32-byte value, decoded as hex and unsigned integer, zero-filled if unset.

TradingLiveeip155:8453Exactvia wellknown:x402.agentindex.world
https://x402.agentindex.world/base/storage
Base rpcStorage slotEth_getStorageAtBase mainnetRaw contract state
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$1.51
Verified settled volume
563 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
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d

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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://x402.agentindex.world/base/storage",
    "tags": [
      "base rpc",
      "storage slot",
      "eth_getStorageAt",
      "base mainnet",
      "raw contract state"
    ],
    "mimeType": "application/json",
    "description": "Read a contract storage slot on Base mainnet via eth_getStorageAt - the raw 32-byte value, decoded as hex and unsigned integer, zero-filled if unset.",
    "serviceName": "base-storage"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "slot": "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc",
            "address": "0xb125e6687d4313864e53df431d5425969c15eb2f"
          },
          "type": "http",
          "method": "GET",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "slot": "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc",
            "value": "0x000000000000000000000000c1455ae6df6cd808ed677f048e434e22892682a7",
            "address": "0xb125e6687d4313864e53df431d5425969c15eb2f",
            "value_decimal": "1103243528667961629076029746875274476749108994727"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "title": "StorageInput",
                "required": [
                  "address",
                  "slot"
                ],
                "properties": {
                  "slot": {
                    "title": "Slot"
                  },
                  "address": {
                    "type": "string",
                    "title": "Address"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "title": "StorageOutput",
                "required": [
                  "address",
                  "slot",
                  "value",
                  "value_decimal"
                ],
                "properties": {
                  "slot": {
                    "type": "string",
                    "title": "Slot"
                  },
                  "value": {
                    "type": "string",
                    "title": "Value"
                  },
                  "address": {
                    "type": "string",
                    "title": "Address"
                  },
                  "value_decimal": {
                    "type": "string",
                    "title": "Value Decimal"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

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 0xb3F3…BA69d. The signed payment is good for 5 minutes.

Paid to
0xb3F3…BA69d
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
    "price": "$0.005",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "slot": "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc",
          "address": "0xb125e6687d4313864e53df431d5425969c15eb2f"
        },
        "type": "http",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "slot": "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc",
          "value": "0x000000000000000000000000c1455ae6df6cd808ed677f048e434e22892682a7",
          "address": "0xb125e6687d4313864e53df431d5425969c15eb2f",
          "value_decimal": "1103243528667961629076029746875274476749108994727"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "title": "StorageInput",
              "required": [
                "address",
                "slot"
              ],
              "properties": {
                "slot": {
                  "title": "Slot"
                },
                "address": {
                  "type": "string",
                  "title": "Address"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "title": "StorageOutput",
              "required": [
                "address",
                "slot",
                "value",
                "value_decimal"
              ],
              "properties": {
                "slot": {
                  "type": "string",
                  "title": "Slot"
                },
                "value": {
                  "type": "string",
                  "title": "Value"
                },
                "address": {
                  "type": "string",
                  "title": "Address"
                },
                "value_decimal": {
                  "type": "string",
                  "title": "Value Decimal"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
—
Last indexed by Roundhouse
2026-10-18 13:15Z
Last enriched (probe, favicon, geo)
2026-10-10 06:46Z
x402 version
—
Max timeout
300s
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. 25 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-storage 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-storage'
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://x402.agentindex.world/base/storage, 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.