Normalize Locale

localization.locale_normalize

ProductionEngine wrapper (Class A)Deterministicstrictinstantv1.0.0

No network

Overview

You send a BCP 47 language tag. We return the ICU canonical form, the language, and any script, region, variants and extensions ICU decomposed. includeLikelySubtags is false unless you opt in, in which case maximizedTag is the CLDR likely-subtag expansion. POSIX identifiers, language detection and locale negotiation are out of scope. Every answer carries the ICU and CLDR versions that produced it.

The same locale arrives as en_US, EN-us and en-US-u-nu-latn. One ICU canonical form, with versions on the wire, is what later i18n skills can share.

Reliability

Same tag, same includeLikelySubtags flag, same ICU/CLDR versions, same answer. Pin _meta when you compare stored tags across upgrades. LOCALE_INVALID — trigger: the value is empty, POSIX (underscore or charset), or not a well-formed BCP 47 tag; retryable: no; next: send a hyphenated tag such as en-US, not en_US.UTF-8.

Context footprint

One language tag in. A successful call costs 1 execution credit.

When to use it

When you hold a BCP 47 tag and need the canonical language, script and region parts.

When you need to pick among available locales, or detect language from content.

Scope

Note

Canonicalizes one BCP 47 locale identifier through ICU and optionally maximizes it.

Non-goals

Does not negotiate a locale against an Accept-Language list
Does not detect the language of content, and does not accept POSIX locale strings

Properties

IdempotentRetry safeStreaming supportedFile input supportedRequires external service

Capabilities

normalization

Cost & billing

Flat rate per invocation

MetercallsBillable onsuccessCost per call1 credit

File handling

Accepts file_refProduces file_refMax input1 KB

How we handle your data

Sensitive input, safe output

What this means

This skill may receive sensitive content, but it does not target sensitive data and returns only a structured non-sensitive result.

Squillify guarantees

Runs inside Squillify
This skill runs inside Squillify.
Payloads are not sent to an external service by this skill.
Squillify does not permanently store submitted payloads.
Telemetry records metadata only, not submitted content.
Submitted payloads are not used for training.
Submitted payloads are not reviewed by humans.
This skill does not target sensitive data.
The response does not contain submitted content.

Your responsibility

Squillify does not determine whether submitted content is sensitive. Your application is responsible for deciding what data it is allowed to submit. Your application is responsible for securing the response.

Read the Microskill Data Handling Policy

Input schema

Field	Type	Required	Description
locale	string	Yes	One BCP 47 language tag.
includeLikelySubtags	boolean	No	Whether to add CLDR likely subtags; omit it for false.

Output schema

Field	Type	Required	Description
canonicalTag	string	Yes	BCP 47 language tag.
language	string	Yes	ISO language subtag.
script	string	No	ISO script subtag when present.
region	string	No	ISO region subtag when present.
variants	array	Yes	From 0 through 8 variant subtags in declared order; empty when ICU recorded none.
extensions	string	No	BCP 47 extensions when present.
maximizedTag	string	No	BCP 47 language tag.
_meta	object	Yes	Closed ICU and CLDR versions used for this canonicalization.

API contract

POST /v1/execute

curl

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"localization.locale_normalize","input":{"locale":"EN-us"}}'

Integrations

TypeScript SDK

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("localization.locale_normalize", {"locale":"EN-us"});

Errors

Code	HTTP	Retryable	Description
VALIDATION_ERROR	400	No	The request payload failed schema validation.
UNAUTHORIZED	401	No	Missing or invalid API key.
SKILL_NOT_ACCESSIBLE	403	No	The API key is not granted access to this skill.
SKILL_NOT_AVAILABLE_FOR_PLAN	403	No	This skill is not included in your current plan.
PLAN_ELIGIBILITY_UNAVAILABLE	503	Yes	Plan eligibility could not be decided. Retry after backoff.
SKILL_NOT_FOUND	404	No	The requested skill or version does not exist.
TENANT_RATE_LIMITED	429	Yes	Request rate limit exceeded. Retry after backoff.
QUOTA_EXCEEDED	429	Yes	Plan quota exhausted. Retryable once the quota period resets.
EXECUTION_TIMEOUT	504	Yes	Execution exceeded the allowed time budget.
LOCALE_INVALID	400	No	The request payload failed this skill's input validation.

Other limits

Limit	Value
Recommended inline bytes	32 KiB

Limitations

Does not negotiate a locale against an Accept-Language list
Does not detect the language of content, and does not accept POSIX locale strings
Picking the best available locale for a request (later localization.locale_negotiate)
Guessing language from a paragraph of text

How to call

POST /v1/execute (requires authentication)

Request bodyjson

{
  "skillKey": "localization.locale_normalize",
  "input": {
    "locale": "EN-us"
  }
}

Examples

Case and separator canonicalization

Inputjson

{
  "locale": "EN-us"
}

Expected outputjson

{
  "language": "en",
  "region": "US",
  "canonicalTag": "en-US",
  "variants": [],
  "_meta": {
    "icuVersion": "76.1",
    "cldrVersion": "46.0"
  }
}

Tip

ICU canonicalizes language to lowercase and region to uppercase

Likely subtags for a language-only tag