Japan Furigana API

payment-readyonline

payment-ready until 2026-10-18

Japanese text utilities: furigana, normalization, multi-reading names, classification. x402-enabled for AI agents.

Part of the Agentic JP operator hub

furigana.agentic-jp.com ↗

Call it x402 v2

x402 v2

Base URL: https://furigana.agentic-jp.com
Payment: x402 v2, header channel

$ curl -i -X POST 'https://furigana.agentic-jp.com/batch'

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

Endpoints 6 paid routes on furigana.agentic-jp.com

POST/batchBase+Pol+Sol$0.0016since 07-12

POST/classifyBase+Pol+Sol$0.005since 07-12

POST/convertBase+Pol+Sol$0.005since 07-12

POST/furiganaBase+Pol+Sol$0.005since 07-12

POST/name-readingsBase+Pol+Sol$0.005since 07-12

POST/normalizeBase+Pol+Sol$0.001since 07-12

Prices as captured in the 402 response: median $0.005 across the 6 endpoints.

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	/batch	No description	$0.0016	Base+Pol+Sol	USDC	header	since 07-12
POST	/classify	No description	$0.005	Base+Pol+Sol	USDC	header	since 07-12
POST	/convert	No description	$0.005	Base+Pol+Sol	USDC	header	since 07-12
POST	/furigana	No description	$0.005	Base+Pol+Sol	USDC	header	since 07-12
POST	/name-readings	No description	$0.005	Base+Pol+Sol	USDC	header	since 07-12
POST	/normalize	No description	$0.001	Base+Pol+Sol	USDC	header	since 07-12

Payment evidence

402 payload captured at 2026-07-12 22:39:02 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/furigana"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/furigana"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/furigana"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/furigana",
    "mimeType": "application/json",
    "description": "Convert kanji-mixed Japanese (JP) text to hiragana, katakana, or romaji (Hepburn/Nippon/Passport), with a per-token breakdown of surface form, reading, and part-of-speech. Backed by the kuromoji morphological analyzer. Use to generate ruby readings, build search indexes, or preprocess text for speech synthesis."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "東京都千代田区永田町",
            "options": {
              "to": "hiragana",
              "mode": "normal",
              "romaji_style": "hepburn"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "input": "東京都千代田区永田町",
            "result": "とうきょうとちよだくながたちょう",
            "tokens": [
              {
                "pos": "名詞",
                "reading": "とうきょう",
                "surface": "東京"
              }
            ]
          }
        }
      },
      "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": {
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 5000,
                    "description": "Japanese kanji-mixed text to convert to a reading"
                  },
                  "options": {
                    "type": "object",
                    "properties": {
                      "to": {
                        "enum": [
                          "hiragana",
                          "katakana",
                          "romaji"
                        ],
                        "type": "string"
                      },
                      "mode": {
                        "enum": [
                          "normal",
                          "furigana",
                          "okurigana"
                        ],
                        "type": "string"
                      },
                      "romaji_style": {
                        "enum": [
                          "hepburn",
                          "nippon",
                          "passport"
                        ],
                        "type": "string"
                      }
                    }
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Other captured 402 responses (5)

Captured payload 2 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/normalize"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/normalize"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/normalize"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "1000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/normalize",
    "mimeType": "application/json",
    "description": "Normalize Japanese (JP) text to a canonical form: fullwidth↔halfwidth conversion, halfwidth-katakana folding, invisible-character removal, and whitespace cleanup — each transformation toggleable. Returns a per-change log. Use to deduplicate or match text where '東京' and 'ﾄｳｷｮｳ' must compare equal."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "ｱｲｳ　ＡＢＣ　１２３"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "input": "ｱｲｳ　ＡＢＣ　１２３",
            "changes": [
              {
                "type": "halfwidth_kana_to_fullwidth",
                "count": 3
              }
            ],
            "normalized": "アイウ ABC 123"
          }
        }
      },
      "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": {
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 5000,
                    "description": "Japanese text to normalize (fullwidth/halfwidth, kana, invisibles)"
                  },
                  "options": {
                    "type": "object"
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/name-readings"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/name-readings"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/name-readings"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/name-readings",
    "mimeType": "application/json",
    "description": "List the possible readings of a Japanese (JP) name — person, company, or place — each with a probability, since names like 山崎 (やまざき / やまさき) are ambiguous without context. Returns hiragana, katakana, and romaji per candidate. Use for CRM name-matching, furigana fields, and call-list preparation."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "name": "山崎太郎",
            "name_type": "person"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "input": "山崎太郎",
            "candidates": [
              {
                "probability": 0.68,
                "reading_romaji": "Yamazaki Taro",
                "reading_hiragana": "やまざきたろう"
              },
              {
                "probability": 0.32,
                "reading_romaji": "Yamasaki Taro",
                "reading_hiragana": "やまさきたろう"
              }
            ],
            "confidence": 0.85
          }
        }
      },
      "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": {
                "required": [
                  "name"
                ],
                "properties": {
                  "name": {
                    "type": "string",
                    "maxLength": 200,
                    "description": "A Japanese name (person/company/place)"
                  },
                  "name_type": {
                    "enum": [
                      "person",
                      "company",
                      "place"
                    ],
                    "type": "string"
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/classify"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/classify"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/classify"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/classify",
    "mimeType": "application/json",
    "description": "Classify a Japanese (JP) string as person_name / company_name / place_name / general / mixed, with a probability, ranked alternates, and a character-type breakdown (kanji/kana/ascii ratios). Use to route input to the right handler before further processing."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "山田太郎"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "input": "山田太郎",
            "classification": {
              "primary": "person_name",
              "probability": 0.92
            }
          }
        }
      },
      "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": {
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 5000,
                    "description": "Japanese text to classify"
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/convert"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/convert"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/convert"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/convert",
    "mimeType": "application/json",
    "description": "Single-shot script conversion of Japanese (JP) text between hiragana, katakana, and romaji (Hepburn/Nippon/Passport styles). Lighter than /furigana — for text that is already kana, with no morphological analysis. Use for quick kana↔romaji transliteration."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "to": "katakana",
            "text": "とうきょう"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "converted": "トウキョウ"
          }
        }
      },
      "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": {
                "required": [
                  "text",
                  "to"
                ],
                "properties": {
                  "to": {
                    "enum": [
                      "hiragana",
                      "katakana",
                      "romaji"
                    ],
                    "type": "string"
                  },
                  "text": {
                    "type": "string",
                    "maxLength": 5000,
                    "description": "Japanese text to convert between scripts"
                  },
                  "style": {
                    "enum": [
                      "hepburn",
                      "nippon",
                      "passport"
                    ],
                    "type": "string"
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/batch"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "1600",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "resource": "https://furigana.agentic-jp.com/batch"
      },
      "payTo": "0x38c9F689274E2fC3AE360744eF88ce212077a584",
      "amount": "1600",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "resource": "https://furigana.agentic-jp.com/batch"
      },
      "payTo": "2BTzdCAcCLaNA2SSZ1YjJvTtscNCpUMUEjLY3LyBpNMk",
      "amount": "1600",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://furigana.agentic-jp.com/batch",
    "mimeType": "application/json",
    "description": "Run furigana / normalize / classify / convert over up to 100 Japanese (JP) text items in one call, with per-item success/error reporting. Dynamic pricing: a small per-item fee. Use to process a whole text column or import file at once."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "items": [
              {
                "id": "1",
                "text": "東京都"
              }
            ],
            "operation": "furigana"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "results": [
              {
                "id": "1",
                "success": true
              }
            ],
            "operation": "furigana"
          }
        }
      },
      "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": {
                "required": [
                  "operation",
                  "items"
                ],
                "properties": {
                  "items": {
                    "type": "array",
                    "maxItems": 100
                  },
                  "options": {
                    "type": "object"
                  },
                  "operation": {
                    "enum": [
                      "furigana",
                      "normalize",
                      "classify",
                      "convert"
                    ],
                    "type": "string"
                  }
                }
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

87/100 Solid

                           │         │      ··│···
0                          55        75       93

                │     │    │··
0               55    75   93

#32 of 184 in AI. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 99.8% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.001 to $0.005 p12 in AI
Risk: clean no risk flag
Traction: $0.11 30d 18 buyers, top buyer 26% (address, not entity)

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 2026-07-12. Last up 2026-10-11.

── 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, 99.8% uptime 30d, 808ms response p95, x402 compliance 14 of 14, $0.001 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 184 listings, this one among them: the same 184 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.

Settled via coinbase ($0.33, 95 tx). Traction is a conservative undercount; first settlement seen 2026-05-18.

All measured facts

What it does

Japanese text utilities: furigana, normalization, multi-reading names, classification. x402-enabled for AI agents.

Japan Furigana API is a listed x402 AI API. Captured payment terms name Base, Polygon, Solana. 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 2026-10-11 02:43:42 UTC. Latest service check observed at 2026-10-11 06:30:07 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-11 06:37:55 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-11 06:30:07 UTC. Latest price capture: 2026-07-12 22:39:02 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 2026-10-11 02:43:42 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: 2026-09-12 to 2026-10-11 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: 2026-10-10 19:31:25 UTC. 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: 99.8%
uptime 90d: 99.6%
response p95: 808ms
avg response: 752ms
total checks: 2,787

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

price (min): $0.001
price (max): $0.005
category percentile (min): p12 in AI
category percentile (max): p13 in AI
endpoints / prices: 6 / 3
model: tiered
stability: 0%

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: $0.11
exact assessment volume 30d (USD): 0.10833333333333334
assessment recorded at (UTC): 2026-10-11T02:43:42.420Z
buyers 30d: 18
settlements 30d: 95
measured since: 2026-05-18 (start of our harvest window)
last settlement: 2026-10-10
top buyer share: 26% of 30d volume (address, not entity)
top 3 buyers share: 56% of 30d volume (addresses, not entities)
concentrated volume: no
trend 7d vs 30d: 2.23x the 30d daily rate
networks: eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $4.85
settlements all-time: 1,061
median settlement 30d: $0.005
max settlement 30d: $0.009

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.

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with Japan Address API, Japan Transit API.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since: 2026-07-12

Recent checks

Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-11 06:30:07 UTC	Online	402	386ms	6
2026-10-11 06:14:06 UTC	Online	402	373ms	6
2026-10-11 05:58:06 UTC	Online	402	315ms	6
2026-10-11 05:42:07 UTC	Online	402	409ms	6
2026-10-11 05:26:06 UTC	Online	402	412ms	6
2026-10-11 05:10:07 UTC	Online	402	408ms	6
2026-10-11 04:54:06 UTC	Online	402	442ms	6
2026-10-11 04:38:06 UTC	Online	402	390ms	6
2026-10-11 04:22:06 UTC	Online	402	426ms	6
2026-10-11 04:06:07 UTC	Online	402	326ms	6
2026-10-11 03:50:08 UTC	Online	402	589ms	6
2026-10-11 03:34:06 UTC	Online	402	323ms	6
2026-10-11 03:18:05 UTC	Online	402	262ms	6
2026-10-11 03:02:06 UTC	Online	402	422ms	6
2026-10-11 02:46:06 UTC	Online	402	351ms	6
2026-10-11 02:30:07 UTC	Online	402	455ms	6
2026-10-11 02:14:06 UTC	Online	402	295ms	6
2026-10-11 01:58:07 UTC	Online	402	483ms	6

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.11, peak $0.11 on 10-08

                                                                                     $0.11       
                                                                                     ██          
                                                                                     ██          
                                                                                     ██          
                                              ▃▃                                     ██          
       ▄▄ ·  ▄▄ ·  ·  ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ·  ▄▄ ██ ▄▄ ▄▄ ▇▇ ·  ·     ▄▄    ▇▇ ▇▇ ▄▄ ·  ██ ▄▄ ▇▇ ·  
    $0

volume no data in the payload

Distinct buyers per dayDistinct buyers per day

        1  ·  1  ·  ·  2  1  2  1  1  2  ·  2  5  2  1  2  ·  ·  1  1  1  1  2  2  ·  3  1  2  ·

Uptime 2 of 29 completed days below 100%

       ██ ██ ██ ██ ██ ██ ██ ██ ██ ▇▇ ██ ██ ▇▇ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██

uptime below 100%, to scale

       09-12                                     09-26                                   10-11*

Volume 30d: $0.11
Uptime: 2 of 29 completed days below 100%

Daily on-chain settlement volume in US dollars, 2026-09-12 to 2026-10-11; highest day $0.11 on 10-08; 8 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
09-12                   $0.01       1
09-13  · no data
09-14                   $0.01       1
09-15  · no data, 2 days to 09-16
09-17                   $0.01       2
09-18                   $0.01       1
09-19                   $0.01       2
09-20                   $0.01       1
09-21                   $0.01       1
09-22                   $0.01       2
09-23  · no data
09-24                   $0.01       2
09-25                   $0.03       5
09-26                   $0.01       2
09-27                   $0.01       1
09-28                   $0.02       2
09-29  · no data, 2 days to 09-30
10-01                  $0.00†       1
10-02                   $0.01       1
10-03                  $0.00†       1
10-04                   $0.02       1
10-05                   $0.02       2
10-06                   $0.01       2
10-07  · no data
10-08                   $0.11       3
10-09                   $0.01       1
10-10                   $0.02       2
10-11* · no data

More charts

Response time daily average, ms min 373ms, avg 760ms, max 1613ms

       ▃▃ ▂▂ ▂▂ ▂▂ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ██ ▅▅ ▅▅ ▆▆ ▆▆ ▄▄ ▄▄ ▇▇ ▆▆ ▆▆ ▅▅ ▅▅ ▃▃ ▃▃ ▃▃ ▂▂ ▂▂ ▃▃ ▃▃ ▂▂ ▂▂

09-12 to 10-11* UTC

      ▃▂▂▂▃▃▃▃▃█▅▅▆▆▄▄▇▆▆▅▅▃▃▃▂▂▃▃▂▂

      09-12         09-26     10-11*

Scores over time

x402 compliance low 14/14, high 14/14

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-12 to 10-11* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-12         09-26     10-11*

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

       ▁▁ ▁▁ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇

09-12 to 10-11* UTC

      ▁▁▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▇▇▇▇▇▇▇

      09-12         09-26     10-11*

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

       ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▁▁ ▁▁

09-12 to 10-11* UTC

      ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁

      09-12         09-26     10-11*

       09-12                                     09-26                                   10-11*

      09-12         09-26     10-11*

Scores: one day per column, 09-12 to 10-11*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. 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/japan-furigana-api/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, 30d: $0.36, peak $0.11 on 10-08. 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: 2026-09-12 to 2026-10-11 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.

Shared payout address (2 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 3 services sharing it: a declared convention, not an individually observed measure.

Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

Assessment history last recorded at 2026-10-11 02:43:42 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-12 to 2026-10-11: 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
2026-09-12	$0.01	1	4	100%	560.21ms	14/14	p10	4/6
2026-09-13	no data	no data	no data	100%	492.56ms	14/14	p10	4/6
2026-09-14	$0.01	1	4	100%	385.08ms	14/14	p11	4/6
2026-09-15	no data	no data	no data	100%	372.83ms	14/14	p11	4/6
2026-09-16	no data	no data	no data	100%	545.61ms	14/14	p11	4/6
2026-09-17	$0.01	2	3	100%	544.13ms	14/14	p11	4/6
2026-09-18	$0.01	1	1	100%	575.41ms	14/14	p11	4/6
2026-09-19	$0.01	2	4	100%	537.89ms	14/14	p11	4/6
2026-09-20	$0.01	1	1	100%	559.46ms	14/14	p11	4/6
2026-09-21	$0.01	1	2	97.78%	1612.52ms	14/14	p11	4/6
2026-09-22	$0.01	2	3	100%	1058.41ms	14/14	p11	4/6
2026-09-23	no data	no data	no data	100%	1058.97ms	14/14	p11	4/6
2026-09-24	$0.01	2	3	95.56%	1293.45ms	14/14	p11	4/6
2026-09-25	$0.03	5	9	100%	1164.87ms	14/14	p11	4/6
2026-09-26	$0.01	2	3	100%	795.86ms	14/14	p11	4/6
2026-09-27	$0.01	1	2	100%	903.16ms	14/14	p11	4/6
2026-09-28	$0.02	2	5	100%	1380.60ms	14/14	p11	4/6
2026-09-29	no data	no data	no data	100%	1219.39ms	14/14	p11	4/6
2026-09-30	no data	no data	no data	100%	1274.83ms	14/14	p11	4/6
2026-10-01	$0.00 recorded†	1	1	100%	1068.97ms	14/14	p11	4/6
2026-10-02	$0.01	1	5	100%	909.88ms	14/14	p11	4/6
2026-10-03	$0.00 recorded†	1	1	100%	550.97ms	14/14	p11	4/6
2026-10-04	$0.02	1	3	100%	546.26ms	14/14	p11	4/6
2026-10-05	$0.02	2	3	100%	508.67ms	14/14	p12	4/6
2026-10-06	$0.01	2	3	100%	449.40ms	14/14	p12	4/6
2026-10-07	no data	no data	no data	100%	445.78ms	14/14	p12	4/6
2026-10-08	$0.11	3	28	100%	597.04ms	14/14	p12	4/6
2026-10-09	$0.01	1	2	100%	531.80ms	14/14	p12	4/6
2026-10-10	$0.02	2	3	100%	462.42ms	14/14	p12	1/6
2026-10-11*	no data	no data	no data	100%	390.78ms	14/14	p12	1/6

Alternatives in AI

Cluster Protocol strong 99/100 100% up 30d $55.7k 30d

x402engine strong 94/100 100% up 30d $46.21 30d

Agent402.tools strong 94/100 99.7% up 30d $247.87 30d

NetIntel strong 94/100 100% up 30d $21.23 30d

GlianaAI strong 93/100 100% up 30d $59.47 30d

5 of 183 other ranked services in AI, ordered by the same measured score.

see the whole category

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