Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453eip155:137eip155:42161eip155:480solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpalgorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=stellar:pubnet

Kaspa fee-market regime: fee-bucket distribution incl

Kaspa fee-market regime: fee-bucket distribution incl. the sub-floor segment the Toccata minimum displaces. Unique pre/post-hardfork fee analytics. Informational research data — not investment advice.

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50000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-11
updated

Provider

api.carbon-cashmere.de · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:480",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "GgS891nMiEETjBEFw1QQxVcAqsRV34mDYpxh24TrpCiD",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
    "payTo": "5GRGZVUNRF2S4BY2TNRBCUCKUOT3H6BP56ACPCZVGR3ISTTRRSSB2RGJGI",
    "asset": "31566704",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "stellar:pubnet",
    "payTo": "GDYFWCUFLG7MZAITOOVITYDNCLVJXWJ7OASYJAJPPOTONUQRNBCRO2VP",
    "asset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
    "amount": "500000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "type": "http"
      },
      "output": {
        "example": {},
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {},
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "hourly": {
                  "type": "array"
                },
                "summary": {
                  "type": "object"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "eip2612GasSponsoring": {
    "info": {
      "description": "The facilitator accepts EIP-2612 gasless Permit to Permit2 canonical contract.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "The amount to approve (uint256).",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The address of the ERC-20 token contract.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "deadline": {
          "description": "The timestamp at which the signature expires.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "nonce": {
          "description": "The current EIP-2612 nonce of the sender.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "signature": {
          "description": "The 65-byte concatenated signature (r, s, v) as a hex string.",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "nonce",
        "deadline",
        "signature",
        "version"
      ],
      "type": "object"
    }
  },
  "erc20ApprovalGasSponsoring": {
    "info": {
      "description": "The facilitator accepts a raw signed approval transaction and will sponsor the gas fees.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "Approval amount (uint256).",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The ERC-20 token contract address to approve.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "signedTransaction": {
          "description": "RLP-encoded signed transaction calling ERC20.approve().",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "signedTransaction",
        "version"
      ],
      "type": "object"
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "acceptIndex": 0,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "network": "eip155:8453",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0x771d0616d83ac3b92c9e8176c8241b33aa0e5671a0bf3109b722938edf3b15c940f91012aedb581782e266e90c85e856a6515c2eb46ac38166df64390851c8831c"
        },
        {
          "acceptIndex": 1,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
            "network": "eip155:137",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0x752446db633c800a330eb7a00b45610d03966a8c3c3aa58865665bc542419c764c34db3174369a429de823990667d90a3269112af06808b2debdf2b0c51c2bfa1c"
        },
        {
          "acceptIndex": 2,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
            "network": "eip155:42161",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0x5c5ed0f55c92df03530efe7a1db3053cfe80ce8422c3b111a86135e672299f4f743ec7c7de8bcc48664c5ccc17d4fce8938bf08a4af74e8c1489c0ce6b9305101b"
        },
        {
          "acceptIndex": 3,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
            "network": "eip155:480",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0xce2a332ee07074a707f9bdedb7fce9087e850fa4aa19496b94e6ddb71a7d6781469342a931593af8eec7f058815c09d6c6dab70cba2c222e27f95e2d553d19f81c"
        },
        {
          "acceptIndex": 4,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
            "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "payTo": "GgS891nMiEETjBEFw1QQxVcAqsRV34mDYpxh24TrpCiD",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0xa841892f47c644e79b755e2597f0f7174c03605719d77005abc6e5eff8f45d833dd66057eaee54fb6cabb8f97fc9a304f48756c08495e5ae31c701f87c2373d31c"
        },
        {
          "acceptIndex": 5,
          "format": "eip712",
          "payload": {
            "amount": "50000",
            "asset": "31566704",
            "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
            "payTo": "5GRGZVUNRF2S4BY2TNRBCUCKUOT3H6BP56ACPCZVGR3ISTTRRSSB2RGJGI",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0x69dda2c0bbc841f7224d43895e9ba733dbe68327e41e291319313ab4547a83cc4c3079650286b15bb2f39f5a79ff31f5491b64031aaa47d6167b3bbc9dca056c1b"
        },
        {
          "acceptIndex": 6,
          "format": "eip712",
          "payload": {
            "amount": "500000",
            "asset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
            "network": "stellar:pubnet",
            "payTo": "GDYFWCUFLG7MZAITOOVITYDNCLVJXWJ7OASYJAJPPOTONUQRNBCRO2VP",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime",
            "scheme": "exact",
            "validUntil": 1789174239,
            "version": 1
          },
          "signature": "0xe70e5ea1fa70a4b14e6bb02f6add937d618f254c37f0c38ef843743c45c24a49591bc8af01f6e35aaed1ec0cfb125b60743460371163cbbb2e2c7799dcef9d651c"
        }
      ]
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "format": {
          "enum": [
            "eip712",
            "jws"
          ],
          "type": "string"
        },
        "payload": {
          "type": "object"
        },
        "signature": {
          "type": "string"
        }
      },
      "required": [
        "format",
        "payload",
        "signature"
      ],
      "type": "object"
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "id": {
          "maxLength": 128,
          "minLength": 16,
          "pattern": "^[a-zA-Z0-9_-]+$",
          "type": "string"
        },
        "required": {
          "type": "boolean"
        }
      },
      "required": [
        "required"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-regime")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/12567.json, and this resource appears in /discovery/resources and /discovery/search.