chess402.vercel.app

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1

0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xfbd46201267609ad3c66bd1b99b7f1cc80b1852f"
  }
]

Observed health

Status

Healthy

Latest latency

70 ms

Average latency

228 ms

HTTP status

204

Last checked

2026-11-02T06:18:56.950Z

Reachability

100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "description": "No parameters required. Send `{}` or an empty body.",
      "properties": {},
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": {},
      "description": "Daily puzzle response.",
      "properties": {
        "game": {
          "additionalProperties": {},
          "description": "Source game for the puzzle.",
          "properties": {
            "id": {
              "description": "Lichess game id the puzzle was extracted from.",
              "type": "string"
            },
            "pgn": {
              "description": "PGN of the game up to the puzzle position.",
              "type": "string"
            }
          },
          "required": [
            "id"
          ],
          "type": "object"
        },
        "puzzle": {
          "additionalProperties": {},
          "description": "Puzzle metadata and solution.",
          "properties": {
            "id": {
              "description": "Puzzle id.",
              "type": "string"
            },
            "initialPly": {
              "description": "Ply count at puzzle start position.",
              "maximum": 9007199254740991,
              "minimum": -9007199254740991,
              "type": "integer"
            },
            "rating": {
              "description": "Puzzle difficulty rating.",
              "maximum": 9007199254740991,
              "minimum": -9007199254740991,
              "type": "integer"
            },
            "solution": {
              "description": "Sequence of UCI moves that solve the puzzle.",
              "items": {
                "type": "string"
              },
              "type": "array"
            },
            "themes": {
              "description": "Tactical themes labeled on this puzzle.",
              "items": {
                "type": "string"
              },
              "type": "array"
            }
          },
          "required": [
            "id",
            "rating",
            "solution"
          ],
          "type": "object"
        }
      },
      "required": [
        "game",
        "puzzle"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}