Borrowing it
Nothing to install: this file belongs to ralcorta/arcasdk. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ralcorta/arcasdk/main/AGENTS.mdgit clone --depth 1 https://github.com/ralcorta/arcasdkWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/ralcorta/arcasdk/agents-md)<a href="https://agentmods.dev/instructions/ralcorta/arcasdk/agents-md"><img src="https://agentmods.dev/badge/instructions/ralcorta/arcasdk/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/ralcorta/arcasdk/agents-md"><img src="https://agentmods.dev/badge/instructions/ralcorta/arcasdk/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.01079 | $0.01079 |
| Opus 5.5 | $0.00432 | $0.00432 |
| Sonnet 5.5 | $0.00216 | $0.00216 |
| Haiku 4.5 | $0.00108 | $0.00108 |
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 2mo 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 — 110 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, WSCT, 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 |
wsctService |
WSCT — comprobantes T de turismo |
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 |
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.
- 2mo ago Changed · +1 lines · +55 tokens per session 40ef0b3f0580
- 2mo ago Changed · +4 lines · +70 tokens per session c3a8a6cb7e0e
- 2mo 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 (197 stars, last pushed 5d ago), licensed MIT. It adds 1,079 tokens to every session, about $0.0043 per session on Opus 5.5. 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.
arcasdk AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| arcasdk AGENTS.mdralcorta/arcasdk | Instructions file | 197 | 5d ago | MIT | A | 1,079 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |