Install
$ agentstack add skill-i18n-agent-i18nstack-localize-el ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ● Network access Used
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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Passed review? Show it. Paste this badge into your README, it links to the public security report.
Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Localize: Greek (el → Ελληνικά)
Distilled from the production translation prompt. Follow these rules verbatim — they are model-agnostic and produce consistent native-quality Greek output for Greece and Cyprus.
Scope & Variants
This skill covers Modern Standard Greek (Νέα Ελληνικά / Δημοτική) — the standard since 1976 when Katharevousa was officially abolished. Two regional variants both use the same standard:
| Code | Country | Standard | Differences | |------|---------|----------|-------------| | el-GR | Greece (Ελλάδα) | Demotic Greek | The reference standard. Default if unspecified. | | el-CY | Cyprus (Κύπρος) | Standard Greek written form | Written language is identical to el-GR. Cyprus uses a Greek dialect (Κυπριακή) for speech, but formal writing — UI, docs, contracts — follows mainland Greek. A few lexical differences exist (e.g., σιενίκι / σιεπί in Cyprus speech) but these do NOT appear in formal Greek UI. |
Decision policy: Translate to el (standard Demotic). For Cyprus-specific products, ask the user if they want any localisms; otherwise output is identical to el-GR.
What the skill does NOT cover:
- Katharevousa (Καθαρεύουσα) — purist/archaic register, abolished 1976. Never use in modern UI.
- Polytonic system (πολυτονικό) — multiple accents (´ ` ῀) + breathing marks (᾿ ῾) + iota subscript (ᾳ ῃ ῳ). Used ONLY for ancient texts, ecclesiastical / Orthodox liturgy, classical scholarship. NEVER for modern UI/marketing/docs.
- Cypriot Greek dialect (Κυπριακή διάλεκτος) — spoken variety only.
Identity Guardrail — Greek is its Own Family
Greek (Ελληνικά) is the sole living member of the Hellenic branch of Indo-European — it has NO close living relatives the way Romance, Slavic, or Germanic languages have siblings. Its alphabet is unique and ancestral to Latin and Cyrillic. Do NOT confuse Greek with:
| Confusable | Reality | |------------|---------| | Russian / Cyrillic | Different script, different language family. Greek letter Β = beta (B), Cyrillic В = ve (V). Do not mix scripts. | | Coptic | Egyptian descendant that uses some Greek letters; different language. | | Macedonian / Bulgarian | Slavic languages, Cyrillic script. NOT Greek despite geographic proximity. | | Ancient Greek / Koine | Greek's own ancestors. Modern UI = Demotic only. |
Greek's defining features in this skill:
- Unique alphabet (24 letters, see below) — never transliterate technical identifiers (Git, API, JSON) into Greek; keep Latin.
- Three genders, four cases (no dative; vocative for direct address).
- Monotonic system — single acute accent ´ only, since 1982 reform.
- Final sigma ς — graphical variant of σ used ONLY at word end.
- Greek question mark
;— looks like a Latin semicolon but is the ερωτηματικό. - Ano teleia
·— the raised dot, NOT a period, used like English semicolon.
The Greek Alphabet (24 Letters)
| Upper | Lower | Name | Sound | |-------|-------|------|-------| | Α | α | άλφα | a | | Β | β | βήτα | v (not b — that's μπ) | | Γ | γ | γάμμα | gh / y (before ε/ι) | | Δ | δ | δέλτα | ð (voiced th, as in "this") | | Ε | ε | έψιλον | e | | Ζ | ζ | ζήτα | z | | Η | η | ήτα | i | | Θ | θ | θήτα | θ (voiceless th, as in "thin") | | Ι | ι | γιώτα | i | | Κ | κ | κάππα | k | | Λ | λ | λάμβδα | l | | Μ | μ | μι | m | | Ν | ν | νι | n | | Ξ | ξ | ξι | ks | | Ο | ο | όμικρον | o | | Π | π | πι | p | | Ρ | ρ | ρο | r | | Σ | σ / ς | σίγμα | s (ς only at word end) | | Τ | τ | ταυ | t | | Υ | υ | ύψιλον | i | | Φ | φ | φι | f | | Χ | χ | χι | x / ç | | Ψ | ψ | ψι | ps | | Ω | ω | ωμέγα | o |
Note: ι, η, υ, ει, οι all sound /i/ (iotacism). Different spellings reflect ancient distinctions. Do not "simplify" — υπηρεσία ≠ ιπιρεσία.
Mindset
> Είσαι ένας εξαιρετικά απαιτητικός Έλληνας συγγραφέας που μισεί τις αφύσικες ελληνικές κατασκευές, όπως οι κυριολεκτικές μεταφράσεις από τα αγγλικά ή οι αδέξιες διατυπώσεις.
Reject literal English calques. Greek is highly inflected — getting gender, case, or article contraction wrong reads as obviously machine-translated. Common English tech loanwords (email, URL, API) stay in Latin script; verbed anglicisms (κλικάρω, σεβάρω, λινκάρω, απλοουντάρω) are NOT acceptable.
Pre-Translation Setup
Lock in before translating:
- Formality (εσείς vs εσύ) — Default to εσείς (formal/plural — same verb form) for B2B, government, banking, and most software UI. Use εσύ only for explicitly consumer-casual contexts. NEVER mix within a file.
- Three genders — αρσενικό (ο), θηλυκό (η), ουδέτερο (το). Articles, adjectives, past participles MUST agree.
- Four cases — ονομαστική (nom), γενική (gen), αιτιατική (acc), κλητική (voc). Selection depends on verb/preposition. Dative is archaic (replaced by σε + acc or genitive).
- Monotonic accent only — single acute ´ on stressed syllable. NEVER use polytonic ` ῀ ᾿ ῾.
- Final sigma rule —
ςonly at the end of a word;σeverywhere else. Get this wrong and the text looks broken. - No articles like English — Greek HAS definite articles (ο/η/το) but they are used MORE than English "the". Abstract nouns, possessives, generic statements all need articles.
- Placeholders — Preserve
{variables}and ICU plural syntax (one / other) exactly.
Register Auto-Detection (run after Pre-Translation Setup)
Greek formality is realized through verb conjugation and possessive pronouns:
| Register | Pronoun | Possessive | Imperative ending | Example | |----------|---------|------------|---------------------|---------| | Formal | εσείς | σας | -ετε / -είτε / -στε | Μπορείτε να αλλάξετε τις ρυθμίσεις σας | | Informal | εσύ | σου | -ε | Μπορείς να αλλάξεις τις ρυθμίσεις σου |
εσείς = both formal 2-person AND genuine plural. In UI it serves as the formal address.
Formal source signals → output εσείς / σας
- Hedging / polite modals: "please", "kindly", "we recommend"
- Passive / impersonal: "users are advised", "it is recommended"
- No contractions: "do not", "cannot", "we will"
- Domain vocabulary: legal, financial, healthcare, regulatory, B2B SaaS, banking
- Third-person / distance: "the user must", "customers should"
- Brand voice: bank, insurance, government, enterprise
Informal source signals → output εσύ / σου
- Contractions: "don't", "you'll", "we're"
- Casual greetings: "hey", "hi there", "yo"
- Consumer-app voice: gaming, social, lifestyle, dating, fitness, kids
- Second-person directness, exclamations, emoji
Mixed / ambiguous source → default to εσείς
εσείς reads slightly distant but professional; εσύ can read as too casual in B2B contexts.
Explicit user override
If the user says "use εσύ" / "use εσείς" / "formal" / "casual", their instruction wins.
After detection: keep the chosen form consistent. NEVER mix εσείς/εσύ across verbs, possessives, OR imperatives in one file.
| Wrong (mixed) | Correct | |---------------|---------| | Θέλετε να διαγράψεις | Θέλετε να διαγράψετε (both formal) OR Θέλεις να διαγράψεις (both informal) | | Μεταφορτώστε + Αναζήτησε | Μεταφορτώστε + Αναζητήστε (both formal) | | Τα αρχεία σου ... Αποθηκεύστε | Τα αρχεία σας ... Αποθηκεύστε (possessive must match) |
Critical Hard Rules
These have no English analogue. The model gets them wrong by default.
A. Monotonic accent system (μονοτονικό) — severity 2.5
Since the 1982 reform, Modern Greek uses ONE accent only: the acute ´. The polytonic system (multiple accents, breathing marks) belongs to ancient/ecclesiastical texts.
| Wrong (polytonic) | Correct (monotonic) | |-------------------|----------------------| | ἄνθρωπος (smooth breathing + acute) | άνθρωπος | | Ἑλλάς (rough breathing + acute) | Ελλάς | | οἶκος (smooth breathing + circumflex) | οίκος | | αὐτός (rough breathing) | αυτός |
Acute placement is mandatory on the stressed syllable of every word ≥ 2 syllables:
| Wrong (missing accent) | Correct | |------------------------|---------| | αρχειο | αρχείο (stress on -χεί-) | | συστημα | σύστημα (stress on σύ-) | | πλατφορμα | πλατφόρμα | | αποθηκευση | αποθήκευση |
Single-syllable words generally take NO accent: το, μου, σε, και, ή, δεν, μη, να, θα. Exception: ή (or) keeps its accent to distinguish from η (the/she).
Dialytika (¨) — used over ι or υ to indicate it is pronounced as a separate syllable (NOT a diphthong):
| Word | Pronunciation | |------|---------------| | άυπνος | dipthong αυ → /afnos/ | | αϋπνία | separate syllables α-ϋ-πνία → /aipnia/ | | προϊόν | separate syllables προ-ϊ-όν | | Μαΐου | μα-ΐ-ου |
When stress falls on the second vowel of what would be a diphthong, the dialytika is implicit in the acute accent on the second vowel (Μαΐου has both ¨ AND ´ combined).
B. Final sigma — ς only at word end (severity 3.0 — HIGHEST)
Greek has two graphical forms of sigma:
- σ — used everywhere EXCEPT word-final position
- ς — used ONLY at the end of a word
NEVER mix them. This is the single most distinctive Greek typography rule.
| Wrong | Correct | |-------|---------| | σπίτις | σπίτι (no ς in this word — wrong character) | | θάλασςας | θάλασσας (σ inside, ς only at end) | | χρηστης (missing final ς) | χρήστης | | ςύστημα | σύστημα (ς can NEVER start a word) | | έλληνας | (correct — final ς) | | ελλήνeς (mid-word ς) | Έλληνες (σ mid-word) |
Compound words: if a sigma falls at the END of the first component but INSIDE the full word, it depends on whether the compound is hyphenated. In standard Greek compounds without hyphen → use σ: θάλασσα not θάλαςσα.
C. Greek question mark ; and ano teleia · (severity 2.5)
Greek punctuation looks confusing because of overlap with Latin:
| Mark | Greek name | Looks like | Function | |------|------------|------------|----------| | ; | ερωτηματικό | Latin semicolon | Greek question mark | | · | άνω τελεία (U+0387) | Raised dot | Greek semicolon (mid-sentence pause stronger than comma, weaker than period) | | . | τελεία | period | Period / full stop | | , | κόμμα | comma | Comma | | : | διπλή τελεία | colon | Colon |
Critical:
- NEVER use
?in Greek text — use; - NEVER use
;as English semicolon — use·(ano teleia) - The ano teleia
·is NOT a question mark — that's;
| Wrong | Correct | |-------|---------| | Θέλετε να συνεχίσετε? | Θέλετε να συνεχίσετε; | | Τι είναι αυτό? | Τι είναι αυτό; | | Πατήστε εδώ; θα σας βοηθήσει (question? mid-sentence) | Πατήστε εδώ· θα σας βοηθήσει (ano teleia for pause) | | Αρχείο; φάκελος; ή σύνδεσμος; (multiple "questions") | Αρχείο, φάκελος ή σύνδεσμος; (one question mark only at the end) |
D. Verb government — verbs require specific preposition + case (severity 2.5)
Many Greek verbs require a SPECIFIC preposition + case combination for their complement. Using the wrong one is a grammar error, not a stylistic choice.
| Verb | Requires | Wrong | Correct | |------|----------|-------|---------| | μετατρέπω (convert) | σε + acc | μετατρέπω PDF | μετατρέπω σε PDF | | αναφέρομαι (refer) | σε + acc | αναφέρεται το αρχείο | αναφέρεται στο αρχείο | | εξαρτώμαι (depend) | από + acc | εξαρτάται τις ρυθμίσεις | εξαρτάται από τις ρυθμίσεις | | αποτελούμαι (consist) | από + acc | αποτελείται τρία μέρη | αποτελείται από τρία μέρη | | συνδέομαι (connect) | με + acc | συνδέεται τον διακομιστή | συνδέεται με τον διακομιστή | | ενδιαφέρομαι (be interested) | για + acc | ενδιαφέρεται τα αποτελέσματα | ενδιαφέρεται για τα αποτελέσματα | | βασίζομαι (rely) | σε + acc | βασίζεται τα δεδομένα | βασίζεται στα δεδομένα (σε + τα → στα) | | πληροφορώ (inform) | για + acc | ενημέρωση τις αλλαγές | ενημέρωση για τις αλλαγές | | χρειάζομαι (need) | accusative (no preposition) | — | χρειάζομαι βοήθεια | | απαντώ (answer/reply) | σε + acc | απαντώ το μήνυμα | απαντώ στο μήνυμα |
E. Article contractions (σε + article) — severity 2.0
ALWAYS contract σε with definite articles. Never leave them as separate words.
| σε + article | Contracted form | Example | |--------------|------------------|---------| | σε + τον (masc acc sg) | στον | στον χρήστη | | σε + την (fem acc sg) | στην | στην πλατφόρμα | | σε + το (neut acc sg) | στο | στο αρχείο | | σε + τους (masc acc pl) | στους | στους χρήστες | | σε + τις (fem acc pl) | στις | στις ρυθμίσεις | | σε + τα (neut acc pl) | στα | στα αρχεία |
| Wrong (uncontracted) | Correct (contracted) | |----------------------|----------------------| | σε το σύστημα | στο σύστημα | | σε την πλατφόρμα | στην πλατφόρμα | | σε τον χρήστη | στον χρήστη | | σε τα αρχεία | στα αρχεία |
The Three Genders
Three genders are visible in the definite article and the noun ending.
| Gender | Article (nom sg) | Indefinite | Common endings | Examples | |--------|-------------------|------------|------------------|----------| | Masculine (αρσενικό) | ο | ένας | -ος, -ης, -ας, -έας | χρήστης, φάκελος, λογαριασμός | | Feminine (θηλυκό) | η | μία / μια | -α, -η, -ση | πλατφόρμα, υπηρεσία, αναζήτηση | | Neuter (ουδέτερο) | το | ένα | -ο, -ι, -μα | αρχείο, παιδί, σύστημα |
Gender of common IT nouns (memorize)
| Masculine (ο) | Feminine (η) | Neuter (το) | |---------------|--------------|-------------| | ο χρήστης | η πλατφόρμα | το αρχείο | | ο φάκελος | η υπηρεσία | το σύστημα | | ο λογαριασμός | η εφαρμογή | το πρόγραμμα | | ο σύνδεσμος | η βάση δεδομένων | το email | | ο διακομιστής | η αναζήτηση | το μήνυμα | | ο κωδικός | η σελίδα | το έγγραφο | | ο υπολογιστής | η ρύθμιση | το URL | | ο ιστότοπος | η ενημέρωση | το PDF | | ο διαχειριστής | η γλώσσα | το όνομα | | ο τομέας | η μετάφραση | το κουμπί |
Loanwords default to NEUTER: το email, το URL, το API, το Wi-Fi, το PDF.
| Wrong | Correct | Why | |-------|---------|-----| | ο πλατφόρμα | η πλατφόρμα | πλατφόρμα is feminine | | η αρχείο | το αρχείο | αρχείο is neuter | | το χρήστης | ο χρήστης | χρήστης is masculine | | ο σύστημα | το σύστημα | -μα ending → always neuter | | η πρόγραμμα | το πρόγραμμα | -μα ending → always neuter | | ο email | το email | Loanwords → neuter |
The Four Cases
| # | Case | Greek | Question | When to use | |---|------|-------|----------|-------------| | 1 | Nominative | ονομαστική | ποιος; (who/what) | Subject of sentence | | 2 | Genitive | γενική | ποιανού; (of whom/what) | Possession, "of", after some prepositions | | 3 | Accusative | αιτιατική | ποιον; (whom/what) | Direct object, after most prepositions | | 4 | Vocative | κλητική | — | Direct address only |
Note: Modern Greek has no productive dative case. Where ancient Greek used dative, modern Greek uses σε + accusative or genitive of possession.
Definite article — full declension
| Case | Masc sg | Fem sg | Neut sg | Masc pl | Fem pl | Neut pl | |------|---------|--------|---------|---------|--------|---------| | Nom | ο | η | το | οι | οι | τα | | Gen | του | της | του | των | των | των | | Acc | τον (or το before vowel) | την (or τη) | το | τους | τις | τα | | Voc | — | — | — | — | — | — |
Vocative has no article — direct address uses bare noun in vocative case: Κύριε Παπαδόπουλε, not Ο κύριε Παπαδόπουλε,.
Common preposition + case pairings
| Preposition | Case | Example | |-------------|------|---------| | σε (to/in/at) | accusative | στο αρχείο, στον χρήστη | | για (for/about) | accusative | για τον χρήστη,
…
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: i18n-agent
- Source: i18n-agent/i18nstack
- License: MIT
- Homepage: https://i18nagent.ai
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.