gs1br
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| gs1_validate_check_digitA | Valida localmente o dígito verificador (módulo 10) de um GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13) ou GTIN-14 (ITF-14). Não requer credenciais e não faz chamada HTTP. Útil para filtrar códigos com erro de leitura antes de consultar a API. |
| gs1_verify_gtinA | Consulta um GTIN na API Verified by GS1 (GS1 Brasil) e retorna um resumo normalizado: marca, descrição, GPC, NCM, CEST, imagens, peso, dimensões, licenciado. Requer credenciais GS1BR_* em variáveis de ambiente. Para a estrutura crua, use gs1_verify_gtin_raw. |
| gs1_verify_gtin_rawA | Consulta um GTIN na API Verified by GS1 e retorna o payload JSON cru, exatamente como recebido da GS1 Brasil (array com 'dadosInternacionais', 'dadosNacionais' e 'verificacao'). Útil quando o consumidor precisa de campos não expostos por gs1_verify_gtin. |
| gs1_enrich_manyA | Consulta um lote pequeno de GTINs sequencialmente e retorna os dados normalizados de cada um. Valida dígito verificador localmente antes de chamar a API (economiza requests). Limitado a 25 GTINs por chamada para proteger contra rate limit da GS1. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 4 tools
Each tool has a clear, distinct purpose: check digit validation, single normalized lookup, single raw lookup, and batch normalized lookup. The descriptions explicitly differentiate raw vs normalized and single vs batch, leaving no ambiguity.
All tools follow the consistent pattern gs1_ + verb + noun/modifier (validate_check_digit, verify_gtin, verify_gtin_raw, enrich_many). The verb is always lowercase and the object is clearly descriptive, with only minor variation like 'raw' and 'many' as modifiers.
Four tools is well-scoped for a GTIN validation and lookup server. It covers the essential operations without bloat, staying within the ideal range of 3–15 tools.
The server covers the full lifecycle of what an agent needs: local check digit validation, single lookup (both normalized and raw), and batch lookup. There are no dead ends—users can validate, query individually, and enrich in bulk.