Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/ralcorta/arcasdk/agents-mdgit clone --depth 1 https://github.com/ralcorta/arcasdkWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00954 | $0.00954 |
| Opus 5 | $0.00477 | $0.00477 |
| Sonnet 5 | $0.00191 | $0.00191 |
| Haiku 4.5 | $0.00095 | $0.00095 |
Grade A, and why
arcasdk AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Arca SDK — guía para agentes de código
Monorepo TypeScript para integrar Web Services de ARCA (ex AFIP) en Node.js.
Paquetes publicados
| Paquete | Uso |
|---|---|
@arcasdk/core |
WSAA, facturación electrónica (WSFE), padrones, FCE, WSFEX, servicio genérico SOAP |
@arcasdk/pdf |
PDF de comprobantes (A, B, C, E, M) |
Importante: el paquete legacy afip.ts en npm es la versión anterior. El desarrollo actual es @arcasdk/core.
Instalación (consumidor)
npm i @arcasdk/core
# opcional PDF
npm i @arcasdk/pdf
Uso mínimo
import { Arca } from "@arcasdk/core";
const arca = new Arca({
cuit: 20111111112,
cert: process.env.AFIP_CERT!, // PEM o ruta al .crt
key: process.env.AFIP_KEY!, // PEM o ruta al .key
production: false, // homologación
});
const status = await arca.electronicBillingService.getServerStatus();
const invoice = await arca.electronicBillingService.createNextVoucher({ /* ... */ });
const taxpayer = await arca.registerScopeFourService.getTaxpayerDetails(20111111111);
Punto de entrada API
- Clase principal:
Arca(packages/core/src/infrastructure/composition/arca.ts) - Referencia pública: docs/referencia-api.md
- Índice para LLMs: docs/public/llms.txt
Servicios en Arca
| Propiedad | Web service |
|---|---|
electronicBillingService |
WSFE — facturas, NC, ND, CAEA |
wsfexService |
WSFEX — exportación |
wsfecredService |
WSFECRED — factura de crédito MiPyMEs |
registerScopeFourService |
Padrón alcance 4 |
registerScopeFiveService |
Padrón alcance 5 |
registerScopeTenService |
Padrón alcance 10 |
registerScopeThirteenService |
Padrón alcance 13 |
registerInscriptionProofService |
Constancia de inscripción |
genericService |
Cualquier WSDL/SOAP de ARCA |
Credenciales y entorno
- Homologación: certificado de testing emitido en el portal ARCA (
production: falseo omitido). - Producción: certificado de producción +
production: true. - El CUIT del contexto debe coincidir con el del certificado.
- WSAA gestiona tickets automáticamente; en serverless usar
ticketStoragecustom ohandleTicket: truecon credenciales pre-obtenidas. - Ver docs/credential_management.md y docs/config.md.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 105 lines · 954 tokens per session scan A f1f0755910f1
arcasdk AGENTS.md is an instructions file published in the GitHub repository ralcorta/arcasdk (166 stars, last pushed 25d ago), licensed MIT. It adds 954 tokens to every session, about $0.0048 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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symfony-flex-backend copilot-instructions.md
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data-api-builder copilot-instructions.md
Copilot instructions for Azure/data-api-builder, covering data api builder (dab) - copilot instructions, project overview, key technologies, project structure and building and testing.
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Instructions for huaweicloud/huaweicloud-devkit, covering agents.md — huaweicloud devkit, commands, architecture, skill naming: meta vs service and file naming: design docs vs implementation.
korean-law-alio-mcp CLAUDE.md
Instructions for scvcoder/korean-law-alio-mcp, covering claude.md, structure, commands, alio 공공기관 내부규정 일괄 수집 (배치) and 보고서형 공시 카테고리 (reportgbn=y) — 단체협약/임금협약/노사협의회.