Analyse a string at the Unicode level
Analyse a string at the Unicode level: apply NFC, NFD, NFKC or NFKD normalisation, report which normalisation forms it is already in, list the scripts present, and flag confusable and homoglyph characters — Cyrillic а in a Latin word, zero-width joiners, bidirectional overrides, invisible characters. Returns per-character detail for anything suspicious, with code points, names and the ASCII character each one imitates.
Answeringour last check, 2026-09-29
1 of 1checks answered this week
26 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.duoleads.com/v1/text/unicode
| Category | Code and developer |
|---|---|
| Provider host | api.duoleads.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-29 | valid payment request | 402 | $0.05 | 26 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"form": "nfd",
"text": "caf\u00e9"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"detail": {
"default": "summary",
"description": "summary (default) or full per-code-point detail (capped at 256 entries).",
"enum": [
"summary",
"full"
],
"maxLength": 64,
"type": "string"
},
"form": {
"default": "nfc",
"description": "Normalisation form to apply, default nfc.",
"enum": [
"nfc",
"nfd",
"nfkc",
"nfkd"
],
"maxLength": 64,
"type": "string"
},
"text": {
"description": "Text to analyse, at most 1024 characters.",
"maxLength": 1024,
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true,
"type": "boolean"
},
"route": {
"type": "string"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}