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.

OtherLiveeip155:8453Exactvia cdp
https://gblin.digital/api/x402/attestation
Calls · 30d
8↓ 11%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$1.15
Verified settled volume
268 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
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": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://gblin.digital/api/x402/attestation",
    "mimeType": "application/json",
    "description": "EIP-712-signed risk attestation, verifiable OFFLINE in one step — no trust in this server required. Perishable (10-min) proof of the BTC/ETH risk regime (calm | elevated | crash) from GBLIN's on-chain Crash Shield on Base. Bought daily by a third-party ERC-8004 agent as a pinned input of its decision rule until 16 Aug 2026 (see /receipts). FREE sample: GET /api/x402/attestation-sample. Free verifier: verify_risk_attestation in @gblin-protocol/mcp-server."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "signed": false,
            "verify": {
              "free_mcp_tool": "npx @gblin-protocol/mcp-server → verify_risk_attestation"
            },
            "attestor": "0x… (published GBLIN attestor, else null)",
            "signature": "0x… (present when attestor key configured, else null)",
            "attestation": {
              "regime": "calm",
              "chain_id": 8453,
              "contract": "0x36C81d7E1966310F305eA637e761Cf77F90852f0",
              "issued_at": 1747600000,
              "expires_at": 1747600600,
              "basket_hash": "0xabcd…",
              "regime_code": 0,
              "ttl_seconds": 600,
              "block_number": 34567890,
              "risk_posture": "risk_on",
              "severity_bps": 0,
              "severity_pct": 0,
              "shield_active": false,
              "defensive_cash_pct": 10
            },
            "attestation_id": "0x9f1c…"
          }
        }
      },
      "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": [],
                "properties": {}
              }
            },
            "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.

0.003USDC≈ $0.003 USD
on Base · exact scheme

Pay 0.003 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
3000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x0ebA5d314F4f5Dcb7A094953Fa9311a45172dd1B",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "signed": false,
          "verify": {
            "free_mcp_tool": "npx @gblin-protocol/mcp-server → verify_risk_attestation"
          },
          "attestor": "0x… (published GBLIN attestor, else null)",
          "signature": "0x… (present when attestor key configured, else null)",
          "attestation": {
            "regime": "calm",
            "chain_id": 8453,
            "contract": "0xc2181d975c05c8c724b334bcED0764c0b86B1D53",
            "issued_at": 1747600000,
            "expires_at": 1747600600,
            "basket_hash": "0xabcd…",
            "regime_code": 0,
            "ttl_seconds": 600,
            "block_number": 34567890,
            "risk_posture": "risk_on",
            "severity_bps": 0,
            "severity_pct": 0,
            "shield_active": false,
            "defensive_cash_pct": 10
          },
          "attestation_id": "0x9f1c…"
        }
      }
    },
    "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": [],
              "properties": {}
            }
          },
          "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 14:50Z
Last enriched (probe, favicon, geo)
2026-09-13 20:45Z
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. 32 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/attestation, 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.