Placeholder Contract Audit
Compare placeholder structure across locales. A placeholder missing from a translation renders blank in some frameworks and throws in others, so the same file is a cosmetic bug in one stack and a crash in the next. ICU braces, printf conversions and mustache pairs are all recognised. Also reports a placeholder no base string supplies, a positional count that differs, a syntax that differs between locales, and unindexed printf placeholders reordered by a translation, which the renderer ignores.
Mediaofflineeip155:8453Exactvia cdp
InternationalisationTranslation qaRelease gateDeveloper toolingData quality
Settlements · 30d
219↓ 44%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$25.35
Verified settled volume
256 settlements proven x402 by their on-chain EIP-3009 marker.
$0.220
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-04 08:44Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608The 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.
0.22USDC≈ $0.22 USD
on Base · exact scheme
Pay 0.22 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.
- Paid to
- 0x25e8…a9608
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 220000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "220000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"locales": [
{
"base": true,
"locale": "en",
"messages": {
"app": {
"title": "Dashboard",
"greeting": "Hello, {name}"
},
"cart": {
"item_one": "You have {count} item in your cart",
"item_other": "You have {count} items in your cart"
},
"legal": {
"terms": "By continuing you accept the <a href=\"/terms\">terms</a>"
},
"errors": {
"retry": "Try again",
"generic": "Something went wrong"
},
"shared": {
"cancel": "Cancel",
"dismiss": "Cancel"
},
"invoice": {
"total": "Total: {amount, number, ::currency/USD}"
}
}
},
{
"locale": "de",
"messages": {
"app": {
"title": "Übersicht",
"greeting": "Hallo, {vorname}"
},
"cart": {
"item_one": "Sie haben {count} Artikel im Warenkorb",
"item_other": "Sie haben {count} Artikel im Warenkorb"
},
"legal": {
"terms": "Mit dem Fortfahren akzeptieren Sie die <a href=\"/terms\">Bedingungen</a>"
},
"errors": {
"retry": "Erneut versuchen",
"generic": "Etwas ist schiefgelaufen"
},
"shared": {
"cancel": "Abbrechen",
"dismiss": "Verwerfen"
},
"invoice": {
"total": "Gesamt"
}
}
},
{
"locale": "fr",
"messages": {
"app": {
"title": "Tableau de bord",
"greeting": "Bonjour, {{name}}"
},
"cart": {
"item_one": "Vous avez {count} article",
"item_other": "Vous avez {count} articles"
},
"legal": {
"terms": "En continuant vous acceptez les conditions"
},
"errors": {
"retry": "Réessayer",
"generic": "Une erreur est survenue"
},
"shared": {
"cancel": "Annuler",
"dismiss": "Ignorer"
},
"invoice": {
"total": "Total : {amount}"
}
}
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxKeys": 50000,
"maxLocales": 60,
"maxFindings": 500,
"maxFileBytes": 2097152,
"maxValueLength": 32768
},
"passed": false,
"complete": true,
"findings": [
{
"key": "app.greeting",
"code": "PLACEHOLDER_MISSING",
"detail": "de is missing name from app.greeting. Some renderers substitute nothing and others throw, so this is a blank in one stack and a crash in the next.",
"locale": "de"
},
{
"key": "app.greeting",
"code": "PLACEHOLDER_NOT_IN_BASE",
"detail": "de uses vorname in app.greeting and the base string does not. Nothing supplies it, so it renders as the literal text or as undefined.",
"locale": "de"
},
{
"key": "app.greeting",
"code": "PLACEHOLDER_SYNTAX_DIFFERS",
"detail": "app.greeting uses icu in en and mustache in fr. One renderer reads one syntax, so the other is left as literal text.",
"locale": "fr"
}
],
"consistent": false,
"request_id": "example-request",
"service_id": "locale_placeholder_contract_audit",
"assumptions": [
"ICU braces, printf conversions and mustache pairs are all recognised, because a project uses one of them and reading only one would report every string in the others as having no placeholders at all.",
"An unindexed printf placeholder cannot be reordered, so a translation that reorders them is reported: the renderer substitutes in the base order regardless, which makes a correct translation render wr...",
"A key absent from a locale is not reported here, since that is a coverage question rather than a placeholder one. locale_key_coverage_audit answers it."
],
"base_locale": "en",
"limitations": [
"Placeholder structure across the files supplied. Whether a translation is accurate or idiomatic is outside this entirely, and no renderer is run.",
"consistent is true only when every translated message carried exactly the base placeholders in a usable form."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"locale_count": 3,
"not_examined": [],
"finding_count": 7,
"base_key_count": 10,
"service_version": "1.0.0",
"findings_by_code": {
"PLACEHOLDER_MISSING": 3,
"PLACEHOLDER_NOT_IN_BASE": 2,
"PLACEHOLDER_SYNTAX_DIFFERS": 2
},
"compared_message_count": 20,
"keys_with_placeholders": 4
}
}
},
"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": [
"locales"
],
"properties": {
"locales": {
"type": "array",
"items": {
"type": "object",
"required": [
"locale",
"messages"
],
"properties": {
"base": {
"type": "boolean"
},
"locale": {
"type": "string",
"maxLength": 35
},
"messages": {
"type": [
"object",
"string"
]
}
},
"additionalProperties": false
},
"maxItems": 60,
"minItems": 2
}
},
"additionalProperties": false
},
"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"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-04 08:44Z
- Last indexed by Roundhouse
- 2026-10-05 00:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-05 02:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 0
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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Placeholder Contract Audit 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=Placeholder%20Contract%20Audit' 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://api.zfinia.com/x402/v1/locale-placeholder-contract-audit, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.