Roundhouse AI

gblin.digital

GBLIN is a non-speculative on-chain index on Base Network. 45% cbBTC + 45% WETH + 10% USDC. Algorithmic rebalancing, transparent NAV, no team allocation, no VC, no presale. Wealth preservation, not speculation.

DataLiveeip155:8453Exactvia cdp
https://gblin.digital/api/x402/invest
Calls · 30d
3↓ 9.5%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$1.15
Verified settled volume
268 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-23 19:22Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x0ebA5d314F4f5Dcb7A094953Fa9311a45172dd1B

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": "0x0ebA5d314F4f5Dcb7A094953Fa9311a45172dd1B",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://gblin.digital/api/x402/invest",
    "mimeType": "application/json",
    "description": "USDC→GBLIN treasury-accumulation calldata: two sequential steps (approve USDC, then buyGBLINWithToken) with MEV-safe minOut."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "usdc": "10",
            "wallet": "0x0000000000000000000000000000000000000001"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "steps": [
              {
                "step": 1,
                "value": "0",
                "target": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "calldata": "0x095ea7b3…",
                "description": "Approve GBLIN contract to spend USDC"
              },
              {
                "step": 2,
                "value": "0",
                "target": "0x36C81d7E1966310F305eA637e761Cf77F90852f0",
                "calldata": "0x4f5d3a7b…",
                "description": "Buy GBLIN with USDC via native contract function"
              }
            ],
            "action": "sequential_txs",
            "expected": {
              "usdc_in": "10",
              "weth_min": "0.002824",
              "gblin_min": "7.918310",
              "gblin_expected": "8.121345",
              "slippage_reason": "normal",
              "slippage_buffer_pct": 2.5
            },
            "security": {
              "min_outs_set": true,
              "mev_protected": true
            }
          }
        }
      },
      "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"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "usdc",
                  "wallet"
                ],
                "properties": {
                  "usdc": {
                    "type": "string",
                    "description": "USDC amount to invest into GBLIN (decimal string)"
                  },
                  "wallet": {
                    "type": "string",
                    "description": "Agent EOA / smart-account 0x address that will execute the returned calldata"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "gblin_info": {
    "docs": "https://gblin.digital/api/x402/llms.txt",
    "note": "Reading is free; only the paid resource above requires payment.",
    "free_market_risk_regime": "https://gblin-mcp.gblin-mcp-worker.workers.dev/regime",
    "x402_uptime_observatory": "https://gblin-mcp.gblin-mcp-worker.workers.dev/observatory"
  },
  "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.

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0x0ebA…2dd1B. The signed payment is good for 5 minutes.

Paid to
0x0ebA…2dd1B
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x0ebA5d314F4f5Dcb7A094953Fa9311a45172dd1B",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "usdc": "10",
          "wallet": "0x0000000000000000000000000000000000000001"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "steps": [
            {
              "step": 1,
              "value": "0",
              "target": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "calldata": "0x095ea7b3…",
              "description": "Approve GBLIN contract to spend USDC"
            },
            {
              "step": 2,
              "value": "0",
              "target": "0x0E9D6Ceb6D313b021622C121Cda9C62e86e60200",
              "calldata": "0x4f5d3a7b…",
              "description": "GBLINZap.buyGBLINWithToken(token_in, amount_in, min_weth_out, min_out, venue_data, receiver) — swaps to WETH and mints at NAV in one transaction"
            }
          ],
          "action": "sequential_txs",
          "expected": {
            "usdc_in": "10",
            "weth_min": "0.002824",
            "gblin_min": "7.918310",
            "gblin_expected": "8.121345",
            "slippage_reason": "normal",
            "slippage_buffer_pct": 2.5
          },
          "security": {
            "min_outs_set": true,
            "mev_protected": true
          }
        }
      }
    },
    "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"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "usdc",
                "wallet"
              ],
              "properties": {
                "usdc": {
                  "type": "string",
                  "description": "USDC amount to invest into GBLIN (decimal string)"
                },
                "wallet": {
                  "type": "string",
                  "description": "Agent EOA / smart-account 0x address that will execute the returned calldata"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-23 19:22Z
Last indexed by Roundhouse
2026-09-24 15:10Z
Last enriched (probe, favicon, geo)
2026-09-21 13:45Z
x402 version
2
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 gblin.digital 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=gblin.digital'
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://gblin.digital/api/x402/invest, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

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