AI Inference · x402 · early usage

OpenAI-compatible LLM inference and chat completions across seven open-weight reasoning…

by api.ai-open-models.com · discovered, not yet claimed by its owner · updated 2026-10-12

30d calls133

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

OpenAI-compatible LLM inference and chat completions across seven open-weight reasoning, coding, and vision models. Choose Kimi K3, Qwen3.6, Qwen3.8, GLM-5.2, GLM-5.3, GLM-5.3-Flash, or DeepSeek V4.1 Flash. Use them to generate text or JSON, analyze images, and call client-provided tools. Supports up to 4 images and selectable reasoning controls. Pricing is quoted dynamically from the prompt and max_tokens.

Tags: openai-compatible · llm · inference · vision · tool-calling · bazaar · builder-code · eip2612GasSponsoring · erc20ApprovalGasSponsoring

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-12

Input example from Bazaar metadata

{
  "max_tokens": 512,
  "messages": [
    {
      "content": [
        {
          "text": "Identify this landmark, then use web search to find current visitor information. Return a JSON summary.",
          "type": "text"
        },
        {
          "image_url": {
            "detail": "auto",
            "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
          },
          "type": "image_url"
        }
      ],
      "role": "user"
    }
  ],
  "model": "Qwen/Qwen3.8-27B",
  "parallel_tool_calls": true,
  "provider": "deepinfra",
  "reasoning_effort": "max",
  "response_format": {
    "type": "json_object"
  },
  "stream": false,
  "temperature": 0.2,
  "tool_choice": "auto",
  "tools": [
    {
      "function": {
        "description": "Search the web for current information.",
        "name": "search_web",
        "parameters": {
          "additionalProperties": false,
          "properties": {
            "query": {
              "description": "Search query.",
              "type": "string"
            }
          },
          "required": [
            "query"
          ],
          "type": "object"
        }
      },
      "type": "function"
    }
  ]
}

Output example

{
  "choices": [
    {
      "finish_reason": "tool_calls",
      "index": 0,
      "message": {
        "content": null,
        "role": "assistant",
        "tool_calls": [
          {
            "function": {
              "arguments": "{\"query\":\"latest open-weight model release\"}",
              "name": "search_web"
            },
            "id": "call_search_1",
            "type": "function"
          }
        ]
      }
    }
  ],
  "created": 0,
  "id": "chatcmpl-tool-example",
  "model": "Qwen/Qwen3.8-27B",
  "object": "chat.completion",
  "usage": {
    "completion_tokens": 32,
    "prompt_tokens": 120,
    "total_tokens": 152
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/33290.json for the price and payment options.
Pay. Call GET https://api.ai-open-models.com/v1/chat/completions. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.002 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 133 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.002	0xdcdf184A64f6489Ec5304750a0AF157440115caE	600s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xdcdf184A64f6489Ec5304750a0AF157440115caE",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "amountUsd": 0.002,
    "maxTimeoutSeconds": 600
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "choices": {
          "items": {
            "properties": {
              "finish_reason": {
                "description": "Usually stop for a final response or tool_calls when client tool execution is requested.",
                "type": "string"
              },
              "index": {
                "type": "integer"
              },
              "message": {
                "properties": {
                  "content": {
                    "description": "Assistant text. This may be null when the model requests tool execution.",
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "reasoning_content": {
                    "description": "Reasoning content when exposed by the selected model and provider.",
                    "type": "string"
                  },
                  "role": {
                    "const": "assistant",
                    "type": "string"
                  },
                  "tool_calls": {
                    "description": "Client-executed function calls requested by the model.",
                    "items": {
                      "additionalProperties": false,
                      "properties": {
                        "function": {
                          "additionalProperties": false,
                          "properties": {
                            "arguments": {
                              "description": "JSON-encoded function arguments generated by the model.",
                              "type": "string"
                            },
                            "name": {
                              "description": "Name of the client-provided function to execute.",
                              "type": "string"
                            }
                          },
                          "required": [
                            "name",
                            "arguments"
                          ],
                          "type": "object"
                        },
                        "id": {
                          "description": "Opaque identifier used to associate a later tool-result message with this call.",
                          "type": "string"
                        },
                        "type": {
                          "const": "function",
                          "type": "string"
                        }
                      },
                      "required": [
                        "id",
                        "type",
                        "function"
                      ],
                      "type": "object"
                    },
                    "minItems": 1,
                    "type": "array"
                  }
                },
                "required": [
                  "role",
                  "content"
                ],
                "type": "object"
              }
            },
            "required": [
              "index",
              "message",
              "finish_reason"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "created": {
          "type": "integer"
        },
        "id": {
          "type": "string"
        },
        "model": {
          "enum": [
            "moonshotai/kimi-k3",
            "Qwen/Qwen3.6-35B-A3B",
            "zai-org/GLM-5.2",
            "zai-org/GLM-5.3",
            "zai-org/GLM-5.3-Flash",
            "Qwen/Qwen3.8-27B",
            "deepseek-ai/DeepSeek-V4.1-Flash"
          ],
          "type": "string"
        },
        "object": {
          "const": "chat.completion",
          "type": "string"
        },
        "usage": {
          "properties": {
            "completion_tokens": {
              "type": "integer"
            },
            "prompt_tokens": {
              "type": "integer"
            },
            "total_tokens": {
              "type": "integer"
            }
          },
          "required": [
            "prompt_tokens",
            "completion_tokens",
            "total_tokens"
          ],
          "type": "object"
        }
      },
      "required": [
        "id",
        "object",
        "created",
        "model",
        "choices",
        "usage"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "choices": [
      {
        "finish_reason": "string",
        "index": 0,
        "message": {
          "content": "string",
          "reasoning_content": "string",
          "role": "string",
          "tool_calls": [
            {
              "function": null,
              "id": null,
              "type": null
            }
          ]
        }
      }
    ],
    "created": 0,
    "id": "string",
    "model": "moonshotai/kimi-k3",
    "object": "string",
    "usage": {
      "completion_tokens": 0,
      "prompt_tokens": 0,
      "total_tokens": 0
    }
  },
  "type": "string"
}

Examples

curl

curl "https://api.ai-open-models.com/v1/chat/completions"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.ai-open-models.com/v1/chat/completions");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.ai-open-models.com/v1/chat/completions")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.ai-open-models.com
Endpoint: https://api.ai-open-models.com/v1/chat/completions
Machine-readable: /resources/33290.json