payment-ready until 2026-09-18
Japanese text utilities: furigana, normalization, multi-reading names, classification. x402-enabled for AI agents.
Part of the Agentic JP operator hub
Pay from $0.001 to $0.005 per request in USDC on Base / Polygon / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
measured since 2026-05-18 (start of our harvest window) · $4.73 all-time · settled via coinbase
VERDICT
ranking generation 3solid 87/100 #16 of 116 in AI by measured score
What the score read on this service: status online, 99.2% uptime 30d, 795ms 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.
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 116 listings, this one among them. That set is wider than the 116 the position above is counted against, 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.
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.
ALTERNATIVES IN AI
Other AI services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| Otto AI | strong | 95 | 100% | $48.59 |
| x402engine | solid | 93 | 100% | $17.68 |
| Agent402.tools | solid | 92 | 98.8% | $126.40 |
| vaaya | solid | 90 | 100% | $32.89 |
| StableEmail | solid | 89 | 100% | $33.51 |
ASSESSMENT
updated 40m agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 99.2%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 99.2%
- uptime 90d
- 99.6%
- response p95
- 795ms
- avg response
- 554ms
- total checks
- 2,754
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.001 to $0.005 (p10 in AI)
- price (min)
- $0.001
- price (max)
- $0.005
- category percentile (min)
- p10 in AI
- category percentile (max)
- p13 in AI
- endpoints / prices
- 6 / 3
- model
- tiered
- stability
- 0%
risk clean
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.
traction $0.1526666667 30d · 21 buyers
- volume 30d
- $0.1526666667
- buyers 30d
- 21
- settlements 30d
- 167
- measured since
- 2026-05-18 (start of our harvest window)
- last settlement
- 2026-09-11
- top buyer share
- 26% of 30d volume
- trend 7d vs 30d
- 0.88x the 30d daily rate
- networks
- eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $4.73
- settlements all-time
- 968
- median settlement 30d
- $0.001
- max settlement 30d
- $0.012
- settled via
- coinbase ($0.46, 167 tx)
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 is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedProvides Japanese text utilities including furigana conversion, normalization, name readings, classification, and script conversion.
- category
- japanese-text-processing
- in
- body
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| POST | /batch | $0.0016 | Base/Polygon/Solana | USDC | header | |
| POST | /classify | $0.005 | Base/Polygon/Solana | USDC | header | |
| POST | /convert | $0.005 | Base/Polygon/Solana | USDC | header | |
| POST | /furigana | $0.005 | Base/Polygon/Solana | USDC | header | |
| POST | /name-readings | $0.005 | Base/Polygon/Solana | USDC | header | |
| POST | /normalize | $0.001 | Base/Polygon/Solana | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /batch returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://furigana.agentic-jp.com/batch'
// 402 response (captured by monitor) · 6 payloads · click to expand
[
{
"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
},
{
"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
},
{
"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
},
{
"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
},
{
"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
},
{
"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
}
] OVER TIME
All charts use the 30d selector; 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. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 6 endpoints. Use the selector to isolate one.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
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.
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. 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.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-07-12 · last up 2026-09-11
- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
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