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YiduoChan API Credits

payment-readyonline

payment-ready until 2026-10-15

Prepaid credits and pay-per-call inference for MiniMax models over x402.

yiduochan.com ↗

Call it x402 v2

x402 v2

Base URL
https://yiduochan.com
Payment
x402 v2, header channel
$ curl -i 'https://yiduochan.com/api/x402/chat/completions'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 5 paid routes on yiduochan.com

GET/api/x402/chat/completionsArbitrum One+Base$0.01since 09-21
GET/api/x402/credits/0.10Arbitrum One+Base$0.10since 09-21
GET/api/x402/credits/1Arbitrum One+Base$1.00since 09-14
GET/api/x402/credits/20Arbitrum One+Base$20.00since 09-14
GET/api/x402/credits/5Arbitrum One+Base$5.00since 09-14

Prices as captured in the 402 response: median $1.00 across the 5 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
GET/api/x402/chat/completionsNo description$0.01Arbitrum One+BaseUSDC, USD Coinheadersince 09-21
GET/api/x402/credits/0.10No description$0.10Arbitrum One+BaseUSDC, USD Coinheadersince 09-21
GET/api/x402/credits/1No description$1.00Arbitrum One+BaseUSDC, USD Coinheadersince 09-14
GET/api/x402/credits/20No description$20.00Arbitrum One+BaseUSDC, USD Coinheadersince 09-14
GET/api/x402/credits/5No description$5.00Arbitrum One+BaseUSDC, USD Coinheadersince 09-14

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 5 payloads captured by the monitor.

176 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://yiduochan.com/api/x402/credits/20",
    "tags": [
      "ai",
      "llm",
      "inference",
      "api-credits",
      "openai-compatible",
      "text-to-speech",
      "image-generation",
      "video-generation"
    ],
    "iconUrl": "https://yiduochan.com/logo.png",
    "mimeType": "application/json",
    "description": "Buy $20 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.",
    "serviceName": "YiduoChan API Credits"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "wallet": "0x0000000000000000000000000000000000000000",
            "api_key": "sk-...",
            "base_url": "https://yiduochan.com/v1",
            "credited": true,
            "amount_usd": "20",
            "expires_at": 1788000000,
            "models_url": "https://yiduochan.com/v1/models",
            "balance_usd": "20",
            "transaction_hash": "0x..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {},
                "description": "No request body. Payment is carried in the PAYMENT-SIGNATURE header.",
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "api_key",
                  "base_url",
                  "amount_usd",
                  "credited"
                ],
                "properties": {
                  "wallet": {
                    "type": "string",
                    "description": "Buyer address the credits belong to"
                  },
                  "api_key": {
                    "type": "string",
                    "description": "Bearer token for the OpenAI-compatible API"
                  },
                  "base_url": {
                    "type": "string",
                    "description": "OpenAI-compatible base URL"
                  },
                  "credited": {
                    "type": "boolean",
                    "description": "True once the transfer settled and the balance was added"
                  },
                  "amount_usd": {
                    "type": "string",
                    "description": "Credits purchased, in USD"
                  },
                  "expires_at": {
                    "type": "integer",
                    "description": "Unix time the API key stops working"
                  },
                  "models_url": {
                    "type": "string",
                    "description": "Model catalogue endpoint"
                  },
                  "balance_usd": {
                    "type": "string",
                    "description": "Account balance after this purchase"
                  },
                  "transaction_hash": {
                    "type": "string",
                    "description": "Settlement transaction"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (4)

Captured payload 2 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://yiduochan.com/api/x402/credits/1",
    "tags": [
      "ai",
      "llm",
      "inference",
      "api-credits",
      "openai-compatible",
      "text-to-speech",
      "image-generation",
      "video-generation"
    ],
    "iconUrl": "https://yiduochan.com/logo.png",
    "mimeType": "application/json",
    "description": "Buy $1 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.",
    "serviceName": "YiduoChan API Credits"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "wallet": "0x0000000000000000000000000000000000000000",
            "api_key": "sk-...",
            "base_url": "https://yiduochan.com/v1",
            "credited": true,
            "amount_usd": "1",
            "expires_at": 1788000000,
            "models_url": "https://yiduochan.com/v1/models",
            "balance_usd": "1",
            "transaction_hash": "0x..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {},
                "description": "No request body. Payment is carried in the PAYMENT-SIGNATURE header.",
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "api_key",
                  "base_url",
                  "amount_usd",
                  "credited"
                ],
                "properties": {
                  "wallet": {
                    "type": "string",
                    "description": "Buyer address the credits belong to"
                  },
                  "api_key": {
                    "type": "string",
                    "description": "Bearer token for the OpenAI-compatible API"
                  },
                  "base_url": {
                    "type": "string",
                    "description": "OpenAI-compatible base URL"
                  },
                  "credited": {
                    "type": "boolean",
                    "description": "True once the transfer settled and the balance was added"
                  },
                  "amount_usd": {
                    "type": "string",
                    "description": "Credits purchased, in USD"
                  },
                  "expires_at": {
                    "type": "integer",
                    "description": "Unix time the API key stops working"
                  },
                  "models_url": {
                    "type": "string",
                    "description": "Model catalogue endpoint"
                  },
                  "balance_usd": {
                    "type": "string",
                    "description": "Account balance after this purchase"
                  },
                  "transaction_hash": {
                    "type": "string",
                    "description": "Settlement transaction"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://yiduochan.com/api/x402/credits/0.10",
    "tags": [
      "ai",
      "llm",
      "inference",
      "api-credits",
      "openai-compatible",
      "text-to-speech",
      "image-generation",
      "video-generation"
    ],
    "iconUrl": "https://yiduochan.com/logo.png",
    "mimeType": "application/json",
    "description": "Buy $0.10 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.",
    "serviceName": "YiduoChan API Credits"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "wallet": "0x0000000000000000000000000000000000000000",
            "api_key": "sk-...",
            "base_url": "https://yiduochan.com/v1",
            "credited": true,
            "amount_usd": "0.10",
            "expires_at": 1788000000,
            "models_url": "https://yiduochan.com/v1/models",
            "balance_usd": "0.10",
            "transaction_hash": "0x..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {},
                "description": "No request body. Payment is carried in the PAYMENT-SIGNATURE header.",
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "api_key",
                  "base_url",
                  "amount_usd",
                  "credited"
                ],
                "properties": {
                  "wallet": {
                    "type": "string",
                    "description": "Buyer address the credits belong to"
                  },
                  "api_key": {
                    "type": "string",
                    "description": "Bearer token for the OpenAI-compatible API"
                  },
                  "base_url": {
                    "type": "string",
                    "description": "OpenAI-compatible base URL"
                  },
                  "credited": {
                    "type": "boolean",
                    "description": "True once the transfer settled and the balance was added"
                  },
                  "amount_usd": {
                    "type": "string",
                    "description": "Credits purchased, in USD"
                  },
                  "expires_at": {
                    "type": "integer",
                    "description": "Unix time the API key stops working"
                  },
                  "models_url": {
                    "type": "string",
                    "description": "Model catalogue endpoint"
                  },
                  "balance_usd": {
                    "type": "string",
                    "description": "Account balance after this purchase"
                  },
                  "transaction_hash": {
                    "type": "string",
                    "description": "Settlement transaction"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://yiduochan.com/api/x402/chat/completions",
    "tags": [
      "ai",
      "llm",
      "inference",
      "chat",
      "chat-completions",
      "openai-compatible",
      "language-model",
      "text-generation",
      "minimax",
      "pay-per-call"
    ],
    "iconUrl": "https://yiduochan.com/logo.png",
    "mimeType": "application/json",
    "description": "OpenAI-compatible LLM inference, paid per call. POST a standard chat completion body with an x402 payment and the response is the completion itself; the API key and remaining balance come back in headers, so the next call can skip payment. Serves MiniMax language models: MiniMax-M3 for long-context reasoning with a 1,048,576-token window, and MiniMax-M2.7 for general chat, agent loops and coding. Text to speech and video generation run on the same balance. Whatever a call does not spend stays on the paying wallet. No account, email or signup.",
    "serviceName": "YiduoChan MiniMax Inference"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "model": "MiniMax-M2.7",
            "messages": [
              {
                "role": "user",
                "content": "Summarise this in one sentence: ..."
              }
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "id": "chatcmpl-...",
            "model": "MiniMax-M2.7",
            "usage": {
              "total_tokens": 59,
              "prompt_tokens": 42,
              "completion_tokens": 17
            },
            "object": "chat.completion",
            "choices": [
              {
                "index": 0,
                "message": {
                  "role": "assistant",
                  "content": "..."
                },
                "finish_reason": "stop"
              }
            ]
          }
        }
      },
      "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",
                "required": [
                  "model",
                  "messages"
                ],
                "properties": {
                  "model": {
                    "type": "string",
                    "description": "A model id from /v1/models, for example MiniMax-M2.7 or MiniMax-M3"
                  },
                  "messages": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "role",
                        "content"
                      ],
                      "properties": {
                        "role": {
                          "enum": [
                            "system",
                            "user",
                            "assistant"
                          ],
                          "type": "string"
                        },
                        "content": {
                          "type": "string"
                        }
                      }
                    },
                    "description": "OpenAI chat messages"
                  },
                  "max_tokens": {
                    "type": "integer"
                  },
                  "temperature": {
                    "type": "number"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "description": "An OpenAI chat completion response"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x67164557fb0dd6ce00b95bac0931840ca1f6dbe5",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://yiduochan.com/api/x402/credits/5",
    "tags": [
      "ai",
      "llm",
      "inference",
      "api-credits",
      "openai-compatible",
      "text-to-speech",
      "image-generation",
      "video-generation"
    ],
    "iconUrl": "https://yiduochan.com/logo.png",
    "mimeType": "application/json",
    "description": "Buy $5 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.",
    "serviceName": "YiduoChan API Credits"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "wallet": "0x0000000000000000000000000000000000000000",
            "api_key": "sk-...",
            "base_url": "https://yiduochan.com/v1",
            "credited": true,
            "amount_usd": "5",
            "expires_at": 1788000000,
            "models_url": "https://yiduochan.com/v1/models",
            "balance_usd": "5",
            "transaction_hash": "0x..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {},
                "description": "No request body. Payment is carried in the PAYMENT-SIGNATURE header.",
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "api_key",
                  "base_url",
                  "amount_usd",
                  "credited"
                ],
                "properties": {
                  "wallet": {
                    "type": "string",
                    "description": "Buyer address the credits belong to"
                  },
                  "api_key": {
                    "type": "string",
                    "description": "Bearer token for the OpenAI-compatible API"
                  },
                  "base_url": {
                    "type": "string",
                    "description": "OpenAI-compatible base URL"
                  },
                  "credited": {
                    "type": "boolean",
                    "description": "True once the transfer settled and the balance was added"
                  },
                  "amount_usd": {
                    "type": "string",
                    "description": "Credits purchased, in USD"
                  },
                  "expires_at": {
                    "type": "integer",
                    "description": "Unix time the API key stops working"
                  },
                  "models_url": {
                    "type": "string",
                    "description": "Model catalogue endpoint"
                  },
                  "balance_usd": {
                    "type": "string",
                    "description": "Account balance after this purchase"
                  },
                  "transaction_hash": {
                    "type": "string",
                    "description": "Settlement transaction"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

85/100 Solid

#65 of 188 in AI. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime since 09-14
Compliance
A 14/14 checks pass
Price
$0.01 to $20.00 p50 in AI
Risk
clean no risk flag
Traction
$0.00 30d 0 buyers
Last change
schema changed 17d ago 1 in 30d
14/14 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-09-21. Last up 2026-10-08.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status online, 100% uptime 30d, 724ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside AI, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 188 listings, this one among them: the same 188 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Traction is a conservative undercount.

All measured facts

What it does

Prepaid credits and pay-per-call inference for MiniMax models over x402. Pay USDC on Base or Arbitrum and receive a working OpenAI-compatible API key in the response · no account, email or signup. Serves MiniMax-M2.7 and M2.7-highspeed for general chat, agent loops and coding; MiniMax-M3 for long-context reasoning with a 1,048,576-token window; speech-2.8-hd and speech-2.8-turbo for audio; MiniMax-H3 for video. Text, audio and video all draw on the same balance. Both x402 v1 and v2 are accepted. Tiers from $0.10, or pay per call from $0.01.

YiduoChan API Credits is a listed x402 AI API. Captured payment terms name Arbitrum One, Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-09 to 2026-10-08 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · AI

uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
724ms
avg response
354ms
total checks
2,127

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$0.01
price (max)
$20.00
category percentile (min)
p50 in AI
category percentile (max)
p97 in AI
endpoints / prices
5 / 5
model
tiered
stability
100%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

assessment volume 30d
$0.00
exact assessment volume 30d (USD)
0
assessment recorded at (UTC)
2026-10-08T10:53:06.335Z
buyers 30d
0
settlements 30d
0
measured since
--- (start of our harvest window)
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.

member since
2026-09-14
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402596ms5
Online402391ms5
Online402520ms5
Online402387ms5
Online402789ms5
Online402483ms5
Online402870ms5
Online402731ms5
Online402916ms5
Online402359ms5
Online402510ms5
Online402496ms5
Online402692ms5
Online402538ms5
Online402612ms5
Online402724ms5
Online402386ms5
Online402774ms5

Changes1 in 30d

Latest 1 recorded changes, up to 10 in the last 30 days; newest first; observation times in UTC
Observed at (UTC)ChangeEvidence
schema changed

endpoint added GET /api/x402/chat/completions

endpoint added GET /api/x402/credits/0.10

schema added GET /api/x402/chat/completions exact eip155:42161 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 USD Coin 2 120 {"name":"USD Coin","version":"2"}

schema added GET /api/x402/chat/completions exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 120 {"name":"USD Coin","version":"2"}

schema added GET /api/x402/credits/0.10 exact eip155:42161 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 USD Coin 2 120 {"name":"USD Coin","version":"2"}

schema added GET /api/x402/credits/0.10 exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 120 {"name":"USD Coin","version":"2"}

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.00
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 100% on all 24 completed days
Volume 30d
$0.00
Uptime
100% on all 24 completed days
Daily on-chain settlement volume in US dollars, 2026-09-09 to 2026-10-08; 25 days have no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 144ms, avg 358ms, max 556ms

09-09 to 10-08* UTC

Scores over time

x402 compliance low 14/14, high 14/14

09-09 to 10-08* UTC

Price percentile in AI own low to high; exact values below

09-09 to 10-08* UTC

Site signals present (of 6) own low to high; exact values below

09-09 to 10-08* UTC

Scores: one day per column, 09-09 to 10-08*, on the columns of Response time. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/yiduochan-api-credits/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, no volume data in the last 30d. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-09-09 to 2026-10-08 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-14 to 2026-10-08: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayVolumeBuyersSettlementsUptimeResponseCompliancePrice percentileSite signals
2026-09-14no datano datano data100%393.22ms14/14p904/6
2026-09-15no datano datano data100%409.02ms14/14p904/6
2026-09-16no datano datano data100%541.12ms14/14p904/6
2026-09-17no datano datano data100%545.57ms14/14p904/6
2026-09-18no datano datano data100%532.37ms14/14p904/6
2026-09-19no datano datano data100%556.24ms14/14p904/6
2026-09-20no datano datano data100%431.68ms14/14p904/6
2026-09-21no datano datano data100%451.32ms14/14p494/6
2026-09-22no datano datano data100%430.67ms14/14p494/6
2026-09-23no datano datano data100%434.81ms14/14p506/6
2026-09-24no datano datano data100%328.60ms14/14p506/6
2026-09-25no datano datano data100%320.99ms14/14p506/6
2026-09-26no datano datano data100%369.92ms14/14p496/6
2026-09-27no datano datano data100%289.51ms14/14p496/6
2026-09-28no datano datano data100%175.62ms14/14p496/6
2026-09-29no datano datano data100%218.60ms14/14p496/6
2026-09-30no datano datano data100%180.72ms14/14p496/6
2026-10-01no datano datano data100%218.92ms14/14p496/6
2026-10-02no datano datano data100%218.54ms14/14p496/6
2026-10-03no datano datano data100%144.37ms14/14p506/6
2026-10-04no datano datano data100%388.48ms14/14p506/6
2026-10-05no datano datano data100%256.89ms14/14p506/6
2026-10-06no datano datano data100%346.27ms14/14p516/6
2026-10-07no datano datano data100%318.59ms14/14p506/6
2026-10-08*no datano datano data100%441.55ms14/14p506/6

Alternatives in AI

Cluster Protocol strong 98/100 100% up 30d $55.7k 30d
Agent402.tools strong 93/100 99.8% up 30d $155.01 30d
GlianaAI strong 93/100 100% up 30d $73.62 30d
DexL Agents solid 91/100 100% up 30d $15.17 30d
vaaya solid 91/100 100% up 30d $56.28 30d

5 of 187 other ranked services in AI, ordered by the same measured score.

see the whole category

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