Cluster Protocol

payment-readyonlineimported

payment-ready until 2026-10-12

imported from x402scan, not submitted by the operator · own this service? claim it · or ask to be removed

Pay-per-request AI inference gateway: chat completions, embeddings, image generation, transcription, text-to-speech, reranking and agent execution, paid per call in USDC on Base.

api.clusterprotocol.ai ↗

Call it x402 v2

x402 v2

Base URL: https://api.clusterprotocol.ai
Payment: x402 v2, header channel

$ curl -i -X POST 'https://api.clusterprotocol.ai/v1/agents/execute'

An unpaid request returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

Endpoints 9 paid routes on api.clusterprotocol.ai

POST/v1/agents/executeBase$1.00since 10-05

POST/v1/agents/execute/maxBase$15.00since 10-05

POST/v1/agents/execute/proBase$5.00since 10-05

POST/v1/audio/speechBase$0.015since 10-05

POST/v1/audio/transcriptionsBase$0.006since 10-05

POST/v1/chat/completionsBase$0.003since 10-05

POST/v1/embeddingsBase$0.0005since 10-05

POST/v1/images/generationsBase$0.02since 10-05

1 more in Example 402 response

Prices as captured in the 402 response: median $0.015 across the 9 endpoints, unchanged since first capture.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
Method	Path	Description	Price	Network	Asset	402 channel	Captured
POST	/v1/agents/execute	No description	$1.00	Base	USDC	header	since 10-05
POST	/v1/agents/execute/max	No description	$15.00	Base	USDC	header	since 10-05
POST	/v1/agents/execute/pro	No description	$5.00	Base	USDC	header	since 10-05
POST	/v1/audio/speech	No description	$0.015	Base	USDC	header	since 10-05
POST	/v1/audio/transcriptions	No description	$0.006	Base	USDC	header	since 10-05
POST	/v1/chat/completions	No description	$0.003	Base	USDC	header	since 10-05
POST	/v1/embeddings	No description	$0.0005	Base	USDC	header	since 10-05
POST	/v1/images/generations	No description	$0.02	Base	USDC	header	since 10-05
POST	/v1/rerank	No description	$0.001	Base	USDC	header	since 10-05

Payment evidence

402 payload captured at 2026-10-05 16:07:02 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/chat/completions",
    "mimeType": "application/json",
    "description": "AI chat inference (LLM completion)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "I",
        "2": " ",
        "3": "c",
        "4": "h",
        "5": "a",
        "6": "t",
        "7": " ",
        "8": "i",
        "9": "n",
        "10": "f",
        "11": "e",
        "12": "r",
        "13": "e",
        "14": "n",
        "15": "c",
        "16": "e",
        "17": " ",
        "18": "(",
        "19": "L",
        "20": "L",
        "21": "M",
        "22": " ",
        "23": "c",
        "24": "o",
        "25": "m",
        "26": "p",
        "27": "l",
        "28": "e",
        "29": "t",
        "30": "i",
        "31": "o",
        "32": "n",
        "33": ")",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "model",
            "messages"
          ],
          "properties": {
            "model": {
              "type": "string",
              "description": "Model slug (e.g. 'llama-3.3-70b-instruct', 'deepseek-r1')"
            },
            "stream": {
              "type": "boolean"
            },
            "messages": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "role",
                  "content"
                ],
                "properties": {
                  "role": {
                    "enum": [
                      "system",
                      "user",
                      "assistant"
                    ],
                    "type": "string"
                  },
                  "content": {
                    "type": "string"
                  }
                }
              }
            },
            "provider": {
              "type": "string",
              "description": "Pin to provider (e.g. 'venice', 'groq', 'phala', 'redpill', 'zerog')"
            },
            "max_tokens": {
              "type": "integer",
              "minimum": 1
            },
            "temperature": {
              "type": "number",
              "maximum": 2,
              "minimum": 0
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "model": {
              "type": "string"
            },
            "usage": {
              "type": "object",
              "properties": {
                "total_tokens": {
                  "type": "integer"
                },
                "prompt_tokens": {
                  "type": "integer"
                },
                "completion_tokens": {
                  "type": "integer"
                }
              }
            },
            "object": {
              "type": "string"
            },
            "choices": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "index": {
                    "type": "integer"
                  },
                  "message": {
                    "type": "object",
                    "properties": {
                      "role": {
                        "type": "string"
                      },
                      "content": {
                        "type": "string"
                      }
                    }
                  },
                  "finish_reason": {
                    "type": "string"
                  }
                }
              }
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Other captured 402 responses (8)

Captured payload 2 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "500",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/embeddings",
    "mimeType": "application/json",
    "description": "Text embedding generation"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "T",
        "1": "e",
        "2": "x",
        "3": "t",
        "4": " ",
        "5": "e",
        "6": "m",
        "7": "b",
        "8": "e",
        "9": "d",
        "10": "d",
        "11": "i",
        "12": "n",
        "13": "g",
        "14": " ",
        "15": "g",
        "16": "e",
        "17": "n",
        "18": "e",
        "19": "r",
        "20": "a",
        "21": "t",
        "22": "i",
        "23": "o",
        "24": "n",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "model",
            "input"
          ],
          "properties": {
            "input": {
              "type": "string",
              "description": "Text or array of texts to embed"
            },
            "model": {
              "type": "string",
              "description": "Embedding model slug"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "data": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "index": {
                    "type": "integer"
                  },
                  "embedding": {
                    "type": "array",
                    "items": {
                      "type": "number"
                    }
                  }
                }
              }
            },
            "model": {
              "type": "string"
            },
            "usage": {
              "type": "object",
              "properties": {
                "total_tokens": {
                  "type": "integer"
                },
                "prompt_tokens": {
                  "type": "integer"
                }
              }
            },
            "object": {
              "type": "string"
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 3 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/images/generations",
    "mimeType": "application/json",
    "description": "AI image generation"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "I",
        "2": " ",
        "3": "i",
        "4": "m",
        "5": "a",
        "6": "g",
        "7": "e",
        "8": " ",
        "9": "g",
        "10": "e",
        "11": "n",
        "12": "e",
        "13": "r",
        "14": "a",
        "15": "t",
        "16": "i",
        "17": "o",
        "18": "n",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "model",
            "prompt"
          ],
          "properties": {
            "n": {
              "type": "integer",
              "maximum": 4,
              "minimum": 1
            },
            "size": {
              "type": "string",
              "description": "Dimensions (e.g. '1024x1024')"
            },
            "model": {
              "type": "string",
              "description": "Image model slug"
            },
            "prompt": {
              "type": "string",
              "description": "Text prompt describing the image"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "data": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "b64_json": {
                    "type": "string"
                  }
                }
              }
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 4 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/audio/transcriptions",
    "mimeType": "application/json",
    "description": "Audio transcription (speech-to-text)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "u",
        "2": "d",
        "3": "i",
        "4": "o",
        "5": " ",
        "6": "t",
        "7": "r",
        "8": "a",
        "9": "n",
        "10": "s",
        "11": "c",
        "12": "r",
        "13": "i",
        "14": "p",
        "15": "t",
        "16": "i",
        "17": "o",
        "18": "n",
        "19": " ",
        "20": "(",
        "21": "s",
        "22": "p",
        "23": "e",
        "24": "e",
        "25": "c",
        "26": "h",
        "27": "-",
        "28": "t",
        "29": "o",
        "30": "-",
        "31": "t",
        "32": "e",
        "33": "x",
        "34": "t",
        "35": ")",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "file",
            "model"
          ],
          "properties": {
            "file": {
              "type": "string",
              "format": "binary",
              "description": "Audio file"
            },
            "model": {
              "type": "string",
              "description": "Transcription model (e.g. 'whisper-large-v3')"
            },
            "language": {
              "type": "string",
              "description": "ISO 639-1 language code"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "text": {
              "type": "string"
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 5 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "15000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/audio/speech",
    "mimeType": "audio/mpeg",
    "description": "Text-to-speech synthesis"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "T",
        "1": "e",
        "2": "x",
        "3": "t",
        "4": "-",
        "5": "t",
        "6": "o",
        "7": "-",
        "8": "s",
        "9": "p",
        "10": "e",
        "11": "e",
        "12": "c",
        "13": "h",
        "14": " ",
        "15": "s",
        "16": "y",
        "17": "n",
        "18": "t",
        "19": "h",
        "20": "e",
        "21": "s",
        "22": "i",
        "23": "s",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "model",
            "input"
          ],
          "properties": {
            "input": {
              "type": "string",
              "description": "Text to synthesize"
            },
            "model": {
              "type": "string",
              "description": "TTS model slug"
            },
            "speed": {
              "type": "number",
              "maximum": 4,
              "minimum": 0.25
            },
            "voice": {
              "type": "string",
              "description": "Voice preset (e.g. 'alloy', 'nova')"
            }
          }
        },
        "output": {
          "type": "string",
          "format": "binary",
          "description": "Audio stream (audio/mpeg)"
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 6 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/rerank",
    "mimeType": "application/json",
    "description": "Document reranking"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "D",
        "1": "o",
        "2": "c",
        "3": "u",
        "4": "m",
        "5": "e",
        "6": "n",
        "7": "t",
        "8": " ",
        "9": "r",
        "10": "e",
        "11": "r",
        "12": "a",
        "13": "n",
        "14": "k",
        "15": "i",
        "16": "n",
        "17": "g",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "model",
            "query",
            "documents"
          ],
          "properties": {
            "model": {
              "type": "string",
              "description": "Reranker model slug"
            },
            "query": {
              "type": "string",
              "description": "Search query"
            },
            "top_n": {
              "type": "integer",
              "description": "Number of top results"
            },
            "documents": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Documents to rerank"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "results": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "index": {
                    "type": "integer"
                  },
                  "document": {
                    "type": "string"
                  },
                  "relevance_score": {
                    "type": "number"
                  }
                }
              }
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 7 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/agents/execute",
    "mimeType": "application/json",
    "description": "Autonomous AI agent execution (multi-step reasoning + tool use)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "u",
        "2": "t",
        "3": "o",
        "4": "n",
        "5": "o",
        "6": "m",
        "7": "o",
        "8": "u",
        "9": "s",
        "10": " ",
        "11": "A",
        "12": "I",
        "13": " ",
        "14": "a",
        "15": "g",
        "16": "e",
        "17": "n",
        "18": "t",
        "19": " ",
        "20": "e",
        "21": "x",
        "22": "e",
        "23": "c",
        "24": "u",
        "25": "t",
        "26": "i",
        "27": "o",
        "28": "n",
        "29": " ",
        "30": "(",
        "31": "m",
        "32": "u",
        "33": "l",
        "34": "t",
        "35": "i",
        "36": "-",
        "37": "s",
        "38": "t",
        "39": "e",
        "40": "p",
        "41": " ",
        "42": "r",
        "43": "e",
        "44": "a",
        "45": "s",
        "46": "o",
        "47": "n",
        "48": "i",
        "49": "n",
        "50": "g",
        "51": " ",
        "52": "+",
        "53": " ",
        "54": "t",
        "55": "o",
        "56": "o",
        "57": "l",
        "58": " ",
        "59": "u",
        "60": "s",
        "61": "e",
        "62": ")",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "task"
          ],
          "properties": {
            "task": {
              "type": "string",
              "description": "Natural language task description for the agent to execute"
            },
            "tools": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Tools the agent may use (e.g. 'web_search', 'code_exec', 'data_analysis')"
            },
            "context": {
              "type": "string",
              "description": "Additional context or constraints for execution"
            },
            "max_steps": {
              "type": "integer",
              "maximum": 20,
              "minimum": 1,
              "description": "Maximum reasoning/action steps"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "task": {
              "type": "string"
            },
            "model": {
              "type": "string"
            },
            "usage": {
              "type": "object",
              "properties": {
                "total_tokens": {
                  "type": "integer"
                },
                "action_tokens": {
                  "type": "integer"
                },
                "tools_invoked": {
                  "type": "integer"
                },
                "reasoning_tokens": {
                  "type": "integer"
                }
              }
            },
            "object": {
              "type": "string",
              "const": "agent.execution"
            },
            "output": {
              "type": "object",
              "properties": {
                "result": {
                  "type": "string"
                },
                "reasoning": {
                  "type": "string"
                },
                "confidence": {
                  "type": "number"
                }
              }
            },
            "status": {
              "enum": [
                "completed",
                "failed",
                "timeout"
              ],
              "type": "string"
            },
            "steps_executed": {
              "type": "integer"
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 8 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/agents/execute/pro",
    "mimeType": "application/json",
    "description": "Autonomous AI agent execution — Pro (extended reasoning, deeper tool use)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "u",
        "2": "t",
        "3": "o",
        "4": "n",
        "5": "o",
        "6": "m",
        "7": "o",
        "8": "u",
        "9": "s",
        "10": " ",
        "11": "A",
        "12": "I",
        "13": " ",
        "14": "a",
        "15": "g",
        "16": "e",
        "17": "n",
        "18": "t",
        "19": " ",
        "20": "e",
        "21": "x",
        "22": "e",
        "23": "c",
        "24": "u",
        "25": "t",
        "26": "i",
        "27": "o",
        "28": "n",
        "29": " ",
        "30": "—",
        "31": " ",
        "32": "P",
        "33": "r",
        "34": "o",
        "35": " ",
        "36": "(",
        "37": "e",
        "38": "x",
        "39": "t",
        "40": "e",
        "41": "n",
        "42": "d",
        "43": "e",
        "44": "d",
        "45": " ",
        "46": "r",
        "47": "e",
        "48": "a",
        "49": "s",
        "50": "o",
        "51": "n",
        "52": "i",
        "53": "n",
        "54": "g",
        "55": ",",
        "56": " ",
        "57": "d",
        "58": "e",
        "59": "e",
        "60": "p",
        "61": "e",
        "62": "r",
        "63": " ",
        "64": "t",
        "65": "o",
        "66": "o",
        "67": "l",
        "68": " ",
        "69": "u",
        "70": "s",
        "71": "e",
        "72": ")",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "task"
          ],
          "properties": {
            "task": {
              "type": "string",
              "description": "Natural language task description for the agent to execute"
            },
            "tools": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Tools the agent may use (e.g. 'web_search', 'code_exec', 'data_analysis')"
            },
            "context": {
              "type": "string",
              "description": "Additional context or constraints for execution"
            },
            "max_steps": {
              "type": "integer",
              "maximum": 20,
              "minimum": 1,
              "description": "Maximum reasoning/action steps"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "task": {
              "type": "string"
            },
            "model": {
              "type": "string"
            },
            "usage": {
              "type": "object",
              "properties": {
                "total_tokens": {
                  "type": "integer"
                },
                "action_tokens": {
                  "type": "integer"
                },
                "tools_invoked": {
                  "type": "integer"
                },
                "reasoning_tokens": {
                  "type": "integer"
                }
              }
            },
            "object": {
              "type": "string",
              "const": "agent.execution"
            },
            "output": {
              "type": "object",
              "properties": {
                "result": {
                  "type": "string"
                },
                "reasoning": {
                  "type": "string"
                },
                "confidence": {
                  "type": "number"
                }
              }
            },
            "status": {
              "enum": [
                "completed",
                "failed",
                "timeout"
              ],
              "type": "string"
            },
            "steps_executed": {
              "type": "integer"
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Captured payload 9 of 9

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x68396bD35874695AD86cd29410Bd80A550991a2B",
      "amount": "15000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.clusterprotocol.ai/v1/agents/execute/max",
    "mimeType": "application/json",
    "description": "Autonomous AI agent execution — Max (long-horizon multi-agent orchestration)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "0": "A",
        "1": "u",
        "2": "t",
        "3": "o",
        "4": "n",
        "5": "o",
        "6": "m",
        "7": "o",
        "8": "u",
        "9": "s",
        "10": " ",
        "11": "A",
        "12": "I",
        "13": " ",
        "14": "a",
        "15": "g",
        "16": "e",
        "17": "n",
        "18": "t",
        "19": " ",
        "20": "e",
        "21": "x",
        "22": "e",
        "23": "c",
        "24": "u",
        "25": "t",
        "26": "i",
        "27": "o",
        "28": "n",
        "29": " ",
        "30": "—",
        "31": " ",
        "32": "M",
        "33": "a",
        "34": "x",
        "35": " ",
        "36": "(",
        "37": "l",
        "38": "o",
        "39": "n",
        "40": "g",
        "41": "-",
        "42": "h",
        "43": "o",
        "44": "r",
        "45": "i",
        "46": "z",
        "47": "o",
        "48": "n",
        "49": " ",
        "50": "m",
        "51": "u",
        "52": "l",
        "53": "t",
        "54": "i",
        "55": "-",
        "56": "a",
        "57": "g",
        "58": "e",
        "59": "n",
        "60": "t",
        "61": " ",
        "62": "o",
        "63": "r",
        "64": "c",
        "65": "h",
        "66": "e",
        "67": "s",
        "68": "t",
        "69": "r",
        "70": "a",
        "71": "t",
        "72": "i",
        "73": "o",
        "74": "n",
        "75": ")",
        "input": {
          "method": "POST"
        }
      },
      "tags": [
        "AI",
        "inference",
        "LLM",
        "crypto",
        "decentralized"
      ],
      "schema": {
        "input": {
          "type": "object",
          "required": [
            "task"
          ],
          "properties": {
            "task": {
              "type": "string",
              "description": "Natural language task description for the agent to execute"
            },
            "tools": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Tools the agent may use (e.g. 'web_search', 'code_exec', 'data_analysis')"
            },
            "context": {
              "type": "string",
              "description": "Additional context or constraints for execution"
            },
            "max_steps": {
              "type": "integer",
              "maximum": 20,
              "minimum": 1,
              "description": "Maximum reasoning/action steps"
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "task": {
              "type": "string"
            },
            "model": {
              "type": "string"
            },
            "usage": {
              "type": "object",
              "properties": {
                "total_tokens": {
                  "type": "integer"
                },
                "action_tokens": {
                  "type": "integer"
                },
                "tools_invoked": {
                  "type": "integer"
                },
                "reasoning_tokens": {
                  "type": "integer"
                }
              }
            },
            "object": {
              "type": "string",
              "const": "agent.execution"
            },
            "output": {
              "type": "object",
              "properties": {
                "result": {
                  "type": "string"
                },
                "reasoning": {
                  "type": "string"
                },
                "confidence": {
                  "type": "number"
                }
              }
            },
            "status": {
              "enum": [
                "completed",
                "failed",
                "timeout"
              ],
              "type": "string"
            },
            "steps_executed": {
              "type": "integer"
            }
          }
        },
        "properties": {
          "input": {
            "required": [
              "method"
            ],
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              }
            }
          }
        }
      },
      "iconUrl": "https://hub.clusterprotocol.ai/favicon.ico",
      "serviceName": "Cluster Protocol"
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

89/100 Solid

                           │         │       ·│···
0                          55        75       93

                │     │    │··
0               55    75   93

#8 of 180 in AI. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 100% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.0005 to $15.00 p3 in AI
Risk: clean no risk flag
Traction: $0.00 assessment 30d 0 buyers

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 2026-10-05. Last up 2026-10-05.

── 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, latest daily rollup (no 30d window yet), 300ms response p95, x402 compliance 14 of 14, $0.0005 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 180 listings, this one among them: the same 180 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

Pay-per-request AI inference gateway: chat completions, embeddings, image generation, transcription, text-to-speech, reranking and agent execution, paid per call in USDC on Base.

Cluster Protocol is a listed x402 AI API. Captured payment terms name 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 2026-10-05 16:13:05 UTC. Latest service check observed at 2026-10-05 18:15:04 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-05 18:28:45 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-05 18:15:04 UTC. Latest price capture: 2026-10-05 16:06:51 UTC. 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 2026-10-05 16:13:05 UTC. 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: 2026-08-21 to 2026-10-05 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: -
uptime 7d: -
uptime 30d: -
uptime 90d: -
response p95: 300ms
avg response: 300ms
total checks: 1

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

price (min): $0.0005
price (max): $15.00
category percentile (min): p3 in AI
category percentile (max): p95 in AI
endpoints / prices: 9 / 9
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: 911d
registrar: NameCheap, Inc.
hosting: custom
domain created: 2024-04-06

Identity facts, not a risk score.

assessment volume 30d: $0.00
exact assessment volume 30d (USD): 0
assessment recorded at (UTC): 2026-10-05T16:13:05.266Z
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: 2026-10-05

Recent checks

Latest 9 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-05 18:15:04 UTC	Online	402	487ms	9
2026-10-05 17:59:02 UTC	Online	402	298ms	9
2026-10-05 17:43:03 UTC	Online	402	326ms	9
2026-10-05 17:27:03 UTC	Online	402	332ms	9
2026-10-05 17:11:02 UTC	Online	402	314ms	9
2026-10-05 16:55:02 UTC	Online	402	292ms	9
2026-10-05 16:39:02 UTC	Online	402	265ms	9
2026-10-05 16:23:03 UTC	Online	402	386ms	9
2026-10-05 16:07:02 UTC	Online	402	300ms	9

Over time

On-chain volume daily snapshots, USD 90d: $101,219.97, peak $5,281.05 on 08-23

         $5,281.05                                   
         █    ▇                               ▅      
       ▇ ██▃▆▃█ ▃▅               ▂▅▄▂▂ ▄▂▅    ██     
       █▃██████▁███              █████ ███▆▂█▄██▃    
       ████████████             ▇████████████████    
       ████████████▂· ·▁····▁· ·█████████████████▁···
    $0

volume no data in the payload

Distinct buyers 1 to 670 per day

Daily buyer counts are included in each volume readout and in Values.

Uptime no completed-day data

       ·············································█

       08-21                 09-12             10-05*

Snapshots 90d: $101,219.97
Uptime: no completed-day data

Daily on-chain settlement volume in US dollars, 2026-08-21 to 2026-10-05; highest day $5,281.05 on 08-23; 11 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
08-21               $4,091.93     582
08-22               $2,540.67     648
08-23               $5,281.05     536
08-24               $4,242.66     588
08-25               $3,584.17     661
08-26               $4,006.51     529
08-27               $3,538.00     573
08-28               $5,207.25     623
08-29               $2,268.25     557
08-30               $3,580.20     529
08-31               $3,855.93     606
09-01               $3,130.84     637
09-02                 $207.37     165
09-03  · no data
09-04                  $0.00†       1
09-05  · no data
09-06                   $5.00       1
09-07  · no data, 4 days to 09-10
09-11                   $1.00       1
09-12  · no data
09-13                  $0.00†       1
09-14  · no data
09-15               $2,002.13     557
09-16               $3,455.22     670
09-17               $3,869.89     627
09-18               $3,672.71     532
09-19               $3,440.07     623
09-20               $3,385.23     547
09-21               $2,159.02     584
09-22               $3,632.07     626
09-23               $3,449.85     547
09-24               $3,780.56     545
09-25               $2,924.12     580
09-26               $2,358.09     657
09-27               $3,162.63     592
09-28               $2,622.52     609
09-29               $4,849.10     628
09-30               $4,287.55     572
10-01               $2,529.02     570
10-02                  $99.36     144
10-03  · no data, 3 days to 10-05*

More charts

Response time daily average, ms min 314ms, avg 314ms, max 314ms

█

08-21 to 09-19 UTC

      08-21         09-04      09-19

09-20 to 10-05* UTC

█

      09-20     10-05*

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/cluster-protocol/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, 90d: $101,219.97, peak $5,281.05 on 08-23. 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: 2026-08-21 to 2026-10-05 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. † marks a recorded $0.00 with settlements.

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 2026-10-05 16:13:05 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-08-21 to 2026-10-05: 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
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-08-21	$4,091.93	582	4,088	no data	no data	no data	no data	no data
2026-08-22	$2,540.67	648	4,281	no data	no data	no data	no data	no data
2026-08-23	$5,281.05	536	4,139	no data	no data	no data	no data	no data
2026-08-24	$4,242.66	588	3,826	no data	no data	no data	no data	no data
2026-08-25	$3,584.17	661	3,728	no data	no data	no data	no data	no data
2026-08-26	$4,006.51	529	4,005	no data	no data	no data	no data	no data
2026-08-27	$3,538.00	573	3,711	no data	no data	no data	no data	no data
2026-08-28	$5,207.25	623	4,223	no data	no data	no data	no data	no data
2026-08-29	$2,268.25	557	3,425	no data	no data	no data	no data	no data
2026-08-30	$3,580.20	529	4,179	no data	no data	no data	no data	no data
2026-08-31	$3,855.93	606	4,087	no data	no data	no data	no data	no data
2026-09-01	$3,130.84	637	3,549	no data	no data	no data	no data	no data
2026-09-02	$207.37	165	190	no data	no data	no data	no data	no data
2026-09-03	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-04	$0.00 recorded†	1	1	no data	no data	no data	no data	no data
2026-09-05	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-06	$5.00	1	1	no data	no data	no data	no data	no data
2026-09-07	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-08	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-09	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-10	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-11	$1.00	1	1	no data	no data	no data	no data	no data
2026-09-12	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-13	$0.00 recorded†	1	1	no data	no data	no data	no data	no data
2026-09-14	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-15	$2,002.13	557	3,268	no data	no data	no data	no data	no data
2026-09-16	$3,455.22	670	4,419	no data	no data	no data	no data	no data
2026-09-17	$3,869.89	627	4,019	no data	no data	no data	no data	no data
2026-09-18	$3,672.71	532	3,923	no data	no data	no data	no data	no data
2026-09-19	$3,440.07	623	4,376	no data	no data	no data	no data	no data
2026-09-20	$3,385.23	547	3,710	no data	no data	no data	no data	no data
2026-09-21	$2,159.02	584	4,012	no data	no data	no data	no data	no data
2026-09-22	$3,632.07	626	4,445	no data	no data	no data	no data	no data
2026-09-23	$3,449.85	547	3,913	no data	no data	no data	no data	no data
2026-09-24	$3,780.56	545	4,268	no data	no data	no data	no data	no data
2026-09-25	$2,924.12	580	3,583	no data	no data	no data	no data	no data
2026-09-26	$2,358.09	657	4,046	no data	no data	no data	no data	no data
2026-09-27	$3,162.63	592	3,803	no data	no data	no data	no data	no data
2026-09-28	$2,622.52	609	3,937	no data	no data	no data	no data	no data
2026-09-29	$4,849.10	628	3,745	no data	no data	no data	no data	no data
2026-09-30	$4,287.55	572	4,124	no data	no data	no data	no data	no data
2026-10-01	$2,529.02	570	3,811	no data	no data	no data	no data	no data
2026-10-02	$99.36	144	153	no data	no data	no data	no data	no data
2026-10-03	no data	no data	no data	no data	no data	no data	no data	no data
2026-10-04	no data	no data	no data	no data	no data	no data	no data	no data
2026-10-05*	no data	no data	no data	100%	314.13ms	14/14	p3	1/6

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