Token4u AI Chat API

Name: Token4u AI Chat API
Price: 0.009 USDC
Availability: InStock

gpt-4o-mini API call (~128 tokens)

InferenceLiveeip155:8453Uptovia cdp

https://token4u.ai/v1/chat/completions

AiChatLlmApi

Calls · 30d

1↓ 100%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 27 snapshots so far.

$70.14

Verified settled volume

2,041 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0090

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-08-20 08:15Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x3ccC6565511f404716cAD2D578851ff3Ff95Fd85

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.009USDC≈ $0.009 USD

on Base · upto scheme

Pay 0.009 USDC on Base to 0x3ccC…5Fd85. The signed payment is good for 5 minutes.

Paid to: 0x3ccC…5Fd85
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 9000 smallest units

0.009USDC≈ $0.009 USD

on Base · upto scheme

Pay 0.009 USDC on Base to 0x6D20…564E0. The signed payment is good for 5 minutes.

Paid to: 0x6D20…564E0
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 9000 smallest units

—units

on Base · nvm:erc4337 scheme

0.00units

on alipay · alipay:a2m scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Payment window: 5 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "maxTokens": 57142,
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x3ccC6565511f404716cAD2D578851ff3Ff95Fd85",
    "amount": "9000",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "maxTokens": 57142,
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x6D20a02E3F6afE5465397380e10B974cEd8564E0",
    "amount": "9000",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "extra": {
      "agentId": "81740311443649000869813866819722323083753078282209344081713748983262886679832",
      "version": "1",
      "endpoint": "/v1/chat/completions",
      "httpVerb": "POST"
    },
    "planId": "9484074460558240087113566015610071590999861629579979020535116603676207842363",
    "scheme": "nvm:erc4337",
    "network": "eip155:8453"
  },
  {
    "extra": {
      "method": "MACHINE_PAY",
      "currency": "CNY",
      "paymentNeeded": "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"
    },
    "amount": "0.00",
    "scheme": "alipay:a2m",
    "network": "alipay",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "model": "gpt-4o-mini",
          "messages": [
            {
              "role": "user",
              "content": "Hello, how are you?"
            }
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "format": "application/json",
        "example": {
          "id": "chatcmpl-abc123",
          "model": "gpt-4o-mini",
          "usage": {
            "total_tokens": 18,
            "prompt_tokens": 10,
            "completion_tokens": 8
          },
          "object": "chat.completion",
          "choices": [
            {
              "index": 0,
              "message": {
                "role": "assistant",
                "content": "Hello! How can I help you today?"
              },
              "finish_reason": "stop"
            }
          ],
          "created": 1753000000
        }
      }
    },
    "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": "Model name to use. See /v1/models for the full list."
                },
                "top_p": {
                  "type": "number",
                  "maximum": 1,
                  "minimum": 0,
                  "description": "Nucleus sampling."
                },
                "stream": {
                  "type": "boolean",
                  "description": "Enable streaming via SSE."
                },
                "messages": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "role",
                      "content"
                    ],
                    "properties": {
                      "role": {
                        "enum": [
                          "system",
                          "user",
                          "assistant"
                        ],
                        "type": "string"
                      },
                      "content": {
                        "type": "string",
                        "description": "Text content of the message."
                      }
                    }
                  },
                  "description": "Array of message objects in OpenAI chat format."
                },
                "max_tokens": {
                  "type": "integer",
                  "minimum": 1,
                  "description": "Maximum tokens to generate."
                },
                "temperature": {
                  "type": "number",
                  "maximum": 2,
                  "minimum": 0,
                  "description": "Sampling temperature."
                }
              }
            },
            "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": [
                "id",
                "object",
                "created",
                "model",
                "choices",
                "usage"
              ],
              "properties": {
                "id": {
                  "type": "string",
                  "description": "Unique completion identifier."
                },
                "model": {
                  "type": "string",
                  "description": "Model used for the completion."
                },
                "usage": {
                  "type": "object",
                  "required": [
                    "prompt_tokens",
                    "completion_tokens",
                    "total_tokens"
                  ],
                  "properties": {
                    "total_tokens": {
                      "type": "integer"
                    },
                    "prompt_tokens": {
                      "type": "integer"
                    },
                    "completion_tokens": {
                      "type": "integer"
                    }
                  }
                },
                "object": {
                  "type": "string",
                  "const": "chat.completion"
                },
                "choices": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "index",
                      "message",
                      "finish_reason"
                    ],
                    "properties": {
                      "index": {
                        "type": "integer"
                      },
                      "message": {
                        "type": "object",
                        "required": [
                          "role",
                          "content"
                        ],
                        "properties": {
                          "role": {
                            "type": "string",
                            "const": "assistant"
                          },
                          "content": {
                            "type": "string"
                          }
                        }
                      },
                      "finish_reason": {
                        "enum": [
                          "stop",
                          "length",
                          "content_filter"
                        ],
                        "type": "string"
                      }
                    }
                  }
                },
                "created": {
                  "type": "integer",
                  "description": "Unix timestamp of creation."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-08-10 04:01Z
Last indexed by Roundhouse: 2026-09-19 07:50Z
Last enriched (probe, favicon, geo): 2026-09-12 19:15Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 404

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 27 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service Token4u AI Chat API and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Token4u%20AI%20Chat%20API'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://token4u.ai/v1/chat/completions, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.