Borrowing it
Nothing to install: this file belongs to DojoCodingLabs/hacienda-cr. 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/DojoCodingLabs/hacienda-cr/main/CLAUDE.mdgit clone --depth 1 https://github.com/DojoCodingLabs/hacienda-crWrote 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/dojocodinglabs/hacienda-cr/claude-md)<a href="https://agentmods.dev/instructions/dojocodinglabs/hacienda-cr/claude-md"><img src="https://agentmods.dev/badge/instructions/dojocodinglabs/hacienda-cr/claude-md.svg" alt="Measured on agentmods" 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 | $0.01861 | $0.01861 |
| Opus 5 | $0.00931 | $0.00931 |
| Sonnet 5 | $0.00372 | $0.00372 |
| Haiku 4.5 | $0.00186 | $0.00186 |
Grade A, and why
hacienda-cr CLAUDE.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 7d 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 — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
TypeScript SDK, CLI & MCP Server for Costa Rica Electronic Invoicing (Comprobantes Electrónicos) against the Ministerio de Hacienda API v4.4. Three-layer architecture: SDK (core library) → CLI (hacienda binary) → MCP Server (AI-accessible tools).
Commands
pnpm install # Install dependencies
pnpm build # Build all packages (turbo, respects dependency graph)
pnpm test # Run all tests
pnpm lint # Lint all packages
pnpm format # Check formatting (format:fix to auto-fix)
pnpm typecheck # Type-check all packages
pnpm clean # Remove all dist/ directories
# Single package
pnpm --filter @dojocoding/hacienda-sdk build
pnpm --filter @dojocoding/hacienda-sdk test
pnpm --filter @dojocoding/hacienda-sdk test clave.spec.ts # Single test file
Build order matters: Turbo handles this automatically — shared builds first, then sdk, then cli/mcp. Always run pnpm build before pnpm test on a fresh clone.
Monorepo Structure
packages/
├── sdk/ # @dojocoding/hacienda-sdk — Core: auth, XML, signing, API client, tax calc
├── cli/ # @dojocoding/hacienda-cli — `hacienda` binary (citty framework)
└── mcp/ # @dojocoding/hacienda-mcp — MCP Server (@modelcontextprotocol/sdk)
shared/ # @dojocoding/hacienda-shared — Types, Zod schemas, constants, enums
Dependency flow: shared ← sdk ← cli / mcp. The SDK is the foundation — CLI and MCP wrap it.
Architecture
SDK modules (packages/sdk/src/)
| Module | Purpose |
|---|---|
auth/ |
OAuth2 ROPC token management, .p12 credential loading |
api/ |
Typed HTTP client wrapping Hacienda REST endpoints |
clave/ |
50-digit clave numérica builder and parser |
xml/ |
XML generation (fast-xml-parser), v4.4 XSD validation |
signing/ |
XAdES-EPES digital signature with .p12 keys (xadesjs/xmldsigjs) |
documents/ |
Builders for all 7 document types |
config/ |
Config file management (~/.hacienda-cr/config.toml), sequences |
tax/ |
Tax calculation: rounding, line items, IVA math |
logging/ |
Structured logger with levels (DEBUG→SILENT), text/JSON output |
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.
- 7d ago First seen · 136 lines · 1,861 tokens per session scan A 7947669b0bc2
hacienda-cr CLAUDE.md is an instructions file published in the GitHub repository DojoCodingLabs/hacienda-cr (10 stars, last pushed 10d ago), licensed MIT. It adds 1,861 tokens to every session, about $0.0093 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 2026-08-31.
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