{
  "x402Version": 2,
  "id": 26003,
  "slug": "26003",
  "resource": "https://api.oblique.markets/api/v1/paid/b402-preflight",
  "description": "Use when an agent needs b402 preflight. Returns Validate BNB/B402 payment intent freshness, recipient, amount, deadline, fee cap, public BNB balance, and recent activity without custody or payment relay. $0.01.",
  "type": "http",
  "serviceName": "Oblique Markets",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1787816262/bazaar-icons/3e4ab977553c6430.png",
  "resourceType": "Payments",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x970007590aCC5C938cd51345B17AF51B1B40D3Ab",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 60
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "GYyTRmt317JafPHXPnM54Fsvsma5GnS9wm6qGMqaykdS",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 60
    }
  ],
  "outputSchema": {
    "properties": {
      "amount": {
        "type": "string"
      },
      "amount_units": {
        "type": "string"
      },
      "asset": {
        "type": "string"
      },
      "asset_balance": {
        "type": "string"
      },
      "chain": {
        "type": "string"
      },
      "decision": {
        "type": "string"
      },
      "evidence_hash": {
        "type": "string"
      },
      "evidence_source": {
        "type": "string"
      },
      "fee_cap_bnb": {
        "type": "string"
      },
      "fee_cap_sufficient": {
        "type": "boolean"
      },
      "fee_headroom_bnb": {
        "type": "string"
      },
      "intent_hash": {
        "type": "string"
      },
      "intent_id": {
        "type": "string"
      },
      "payer": {
        "type": "string"
      },
      "recent_activity": {
        "properties": {
          "incoming_transfer_count": {
            "type": "integer"
          },
          "latest_block": {
            "type": "integer"
          },
          "lookback_blocks": {
            "type": "integer"
          },
          "nonce": {
            "type": "integer"
          },
          "outgoing_transfer_count": {
            "type": "integer"
          }
        },
        "type": "object"
      },
      "recipient": {
        "type": "string"
      },
      "recipient_valid": {
        "type": "boolean"
      },
      "signature": {
        "type": "string"
      },
      "signing_key_id": {
        "type": "string"
      },
      "timestamp": {
        "type": "string"
      }
    },
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "amount": "example",
            "asset": "native/BNB or a BEP-20 contract address",
            "chain": "bnb",
            "deadline": "example",
            "fee_cap": "Maximum network fee in BNB",
            "intent_id": "example",
            "payer": "example",
            "recipient": "example"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "amount": "0.01",
            "amount_units": "10000000000000000",
            "asset": "BNB",
            "asset_balance": "0.125",
            "chain": "eip155:56",
            "decision": "ready",
            "evidence_hash": "sha256:4e8f1a2c6d8b0f2e4a6c8e0f2a4c6e8f0a2c4e6f8a0b2c4d6e8f0a2c4e6f8a0b2",
            "evidence_source": "public_bsc_rpc",
            "fee_cap_bnb": "0.0005",
            "fee_cap_sufficient": true,
            "fee_headroom_bnb": "0.1245",
            "intent_hash": "sha256:9c2d7b3f6e1a4c8b0d2e5f7a9b1c3d5e7f9a1b3c5d7e9f1a3b5c7d9e1f3a5b7c9",
            "intent_id": "invoice-2026-08-21-001",
            "payer": "0x1111111111111111111111111111111111111111",
            "recent_activity": {
              "incoming_transfer_count": 5,
              "latest_block": 61500000,
              "lookback_blocks": 2000,
              "nonce": 42,
              "outgoing_transfer_count": 3
            },
            "recipient": "0x2222222222222222222222222222222222222222",
            "recipient_valid": true,
            "signature": "hmac-sha256:7a4e1c9b3d5f7a9c1e3b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5a7",
            "signing_key_id": "b402-preflight-v1",
            "timestamp": "2026-08-21T20:00:00.000Z"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "amount": {
                    "type": "string"
                  },
                  "asset": {
                    "description": "native/BNB or a BEP-20 contract address",
                    "type": "string"
                  },
                  "chain": {
                    "enum": [
                      "bnb",
                      "bnb-smart-chain",
                      "eip155:56",
                      "56"
                    ],
                    "type": "string"
                  },
                  "deadline": {
                    "description": "ISO-8601 timestamp or Unix seconds"
                  },
                  "fee_cap": {
                    "description": "Maximum network fee in BNB",
                    "type": "string"
                  },
                  "intent_id": {
                    "type": "string"
                  },
                  "payer": {
                    "type": "string"
                  },
                  "recipient": {
                    "type": "string"
                  }
                },
                "required": [
                  "payer",
                  "recipient",
                  "asset",
                  "amount",
                  "chain",
                  "deadline",
                  "fee_cap",
                  "intent_id"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "amount": {
                "type": "string"
              },
              "amount_units": {
                "type": "string"
              },
              "asset": {
                "type": "string"
              },
              "asset_balance": {
                "type": "string"
              },
              "chain": {
                "type": "string"
              },
              "decision": {
                "type": "string"
              },
              "evidence_hash": {
                "type": "string"
              },
              "evidence_source": {
                "type": "string"
              },
              "fee_cap_bnb": {
                "type": "string"
              },
              "fee_cap_sufficient": {
                "type": "boolean"
              },
              "fee_headroom_bnb": {
                "type": "string"
              },
              "intent_hash": {
                "type": "string"
              },
              "intent_id": {
                "type": "string"
              },
              "payer": {
                "type": "string"
              },
              "recent_activity": {
                "properties": {
                  "incoming_transfer_count": {
                    "type": "integer"
                  },
                  "latest_block": {
                    "type": "integer"
                  },
                  "lookback_blocks": {
                    "type": "integer"
                  },
                  "nonce": {
                    "type": "integer"
                  },
                  "outgoing_transfer_count": {
                    "type": "integer"
                  }
                },
                "type": "object"
              },
              "recipient": {
                "type": "string"
              },
              "recipient_valid": {
                "type": "boolean"
              },
              "signature": {
                "type": "string"
              },
              "signing_key_id": {
                "type": "string"
              },
              "timestamp": {
                "type": "string"
              }
            },
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "b402",
    "preflight",
    "chain-data",
    "bazaar"
  ],
  "sourceHost": "api.oblique.markets",
  "lastUpdated": "2026-10-06T03:10:02.505Z",
  "quality": {
    "calls30d": 5,
    "uniquePayers30d": 3,
    "lastCalledAt": "2026-10-06T03:10:01.918Z"
  },
  "metadata": {
    "serviceName": "Oblique Markets",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1787816262/bazaar-icons/3e4ab977553c6430.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "amount": "example",
              "asset": "native/BNB or a BEP-20 contract address",
              "chain": "bnb",
              "deadline": "example",
              "fee_cap": "Maximum network fee in BNB",
              "intent_id": "example",
              "payer": "example",
              "recipient": "example"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "amount": "0.01",
              "amount_units": "10000000000000000",
              "asset": "BNB",
              "asset_balance": "0.125",
              "chain": "eip155:56",
              "decision": "ready",
              "evidence_hash": "sha256:4e8f1a2c6d8b0f2e4a6c8e0f2a4c6e8f0a2c4e6f8a0b2c4d6e8f0a2c4e6f8a0b2",
              "evidence_source": "public_bsc_rpc",
              "fee_cap_bnb": "0.0005",
              "fee_cap_sufficient": true,
              "fee_headroom_bnb": "0.1245",
              "intent_hash": "sha256:9c2d7b3f6e1a4c8b0d2e5f7a9b1c3d5e7f9a1b3c5d7e9f1a3b5c7d9e1f3a5b7c9",
              "intent_id": "invoice-2026-08-21-001",
              "payer": "0x1111111111111111111111111111111111111111",
              "recent_activity": {
                "incoming_transfer_count": 5,
                "latest_block": 61500000,
                "lookback_blocks": 2000,
                "nonce": 42,
                "outgoing_transfer_count": 3
              },
              "recipient": "0x2222222222222222222222222222222222222222",
              "recipient_valid": true,
              "signature": "hmac-sha256:7a4e1c9b3d5f7a9c1e3b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5a7",
              "signing_key_id": "b402-preflight-v1",
              "timestamp": "2026-08-21T20:00:00.000Z"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "amount": {
                      "type": "string"
                    },
                    "asset": {
                      "description": "native/BNB or a BEP-20 contract address",
                      "type": "string"
                    },
                    "chain": {
                      "enum": [
                        "bnb",
                        "bnb-smart-chain",
                        "eip155:56",
                        "56"
                      ],
                      "type": "string"
                    },
                    "deadline": {
                      "description": "ISO-8601 timestamp or Unix seconds"
                    },
                    "fee_cap": {
                      "description": "Maximum network fee in BNB",
                      "type": "string"
                    },
                    "intent_id": {
                      "type": "string"
                    },
                    "payer": {
                      "type": "string"
                    },
                    "recipient": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "payer",
                    "recipient",
                    "asset",
                    "amount",
                    "chain",
                    "deadline",
                    "fee_cap",
                    "intent_id"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "amount": {
                  "type": "string"
                },
                "amount_units": {
                  "type": "string"
                },
                "asset": {
                  "type": "string"
                },
                "asset_balance": {
                  "type": "string"
                },
                "chain": {
                  "type": "string"
                },
                "decision": {
                  "type": "string"
                },
                "evidence_hash": {
                  "type": "string"
                },
                "evidence_source": {
                  "type": "string"
                },
                "fee_cap_bnb": {
                  "type": "string"
                },
                "fee_cap_sufficient": {
                  "type": "boolean"
                },
                "fee_headroom_bnb": {
                  "type": "string"
                },
                "intent_hash": {
                  "type": "string"
                },
                "intent_id": {
                  "type": "string"
                },
                "payer": {
                  "type": "string"
                },
                "recent_activity": {
                  "properties": {
                    "incoming_transfer_count": {
                      "type": "integer"
                    },
                    "latest_block": {
                      "type": "integer"
                    },
                    "lookback_blocks": {
                      "type": "integer"
                    },
                    "nonce": {
                      "type": "integer"
                    },
                    "outgoing_transfer_count": {
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "recipient": {
                  "type": "string"
                },
                "recipient_valid": {
                  "type": "boolean"
                },
                "signature": {
                  "type": "string"
                },
                "signing_key_id": {
                  "type": "string"
                },
                "timestamp": {
                  "type": "string"
                }
              },
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.oblique.markets",
    "manifest_name": "api.oblique.markets",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "amount": "string",
    "amount_units": "string",
    "asset": "string",
    "asset_balance": "string",
    "chain": "string",
    "decision": "string",
    "evidence_hash": "string",
    "evidence_source": "string",
    "fee_cap_bnb": "string",
    "fee_cap_sufficient": true,
    "fee_headroom_bnb": "string",
    "intent_hash": "string",
    "intent_id": "string",
    "payer": "string",
    "recent_activity": {
      "incoming_transfer_count": 0,
      "latest_block": 0,
      "lookback_blocks": 0,
      "nonce": 0,
      "outgoing_transfer_count": 0
    },
    "recipient": "string",
    "recipient_valid": true,
    "signature": "string",
    "signing_key_id": "string",
    "timestamp": "string"
  }
}