What is catuaba CLAUDE.md?

A Rails-like command-line framework for Go that generates full-stack web applications using Gin, GORM, Templ, HTMX, and Tailwind CSS. It includes generators for pages, APIs, models, controllers, services, database migrations, and other application parts.

Use it to create a new application, generate web pages or JSON APIs, add models and migrations, create controllers and services, and run database migration commands.

It reduces repetitive setup work when creating a Go web application and provides commands for common project structures.

How dayvsonlima/catuaba configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to dayvsonlima/catuaba. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/dayvsonlima/catuaba/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/dayvsonlima/catuaba

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/dayvsonlima/catuaba/claude-md/github.svg)](https://agentmods.dev/instructions/dayvsonlima/catuaba/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/dayvsonlima/catuaba/claude-md"><img src="https://agentmods.dev/badge/instructions/dayvsonlima/catuaba/claude-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/dayvsonlima/catuaba/claude-md"><img src="https://agentmods.dev/badge/instructions/dayvsonlima/catuaba/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,260 This file is loaded in full into every session.

When invoked 2,260 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.02260	$0.02260
Opus 5.5	$0.00904	$0.00904
Sonnet 5.5	$0.00452	$0.00452
Haiku 4.5	$0.00226	$0.00226

Measured 2mo ago against content hash ed07bd9cefe5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

catuaba 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 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.

CLAUDE.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Catuaba

A Rails-like CLI framework for Go. Generates full-stack web applications with Gin, GORM, Templ, HTMX, and Tailwind CSS.

Quick Reference

go build -v .                    # Build the CLI
go test -v ./...                 # Run all tests
go test -v ./cli/new/...         # Test specific package
go test -v -run TestAction ./cli/scaffold/...  # Run specific test

Architecture

catuaba.go              # CLI entrypoint — all commands registered here (urfave/cli)
cli/                    # Command implementations — one package per command
  new/action.go         # `catuaba new <name>` — creates full app
  scaffold/action.go    # `catuaba g scaffold` — HTML handlers + views + routes
  api/action.go         # `catuaba g api` — JSON API controllers + routes
  model/action.go       # `catuaba g model` — model + SQL migration
  controller/action.go  # `catuaba g controller`
  view/action.go        # `catuaba g view`
  migration/action.go   # `catuaba g migration`
  middleware/action.go   # `catuaba g middleware`
  service/action.go     # `catuaba g service`
  seed/action.go        # `catuaba g seed`
  db/migrate.go         # `catuaba db migrate|rollback|status`
  routes/action.go      # `catuaba routes` — lists app routes
  server/action.go      # `catuaba server`
  install/action.go     # `catuaba install` — plugin installer
  mcp/action.go         # `catuaba mcp` — starts MCP server
  output/output.go      # Colored CLI output helpers
generator/              # Template engine
  embed.go              # `//go:embed all:templates` — embeds all .tmpl files
  render.go             # Render() / RenderFromContent() — Go text/template
  generate_file.go      # GenerateFile() / GenerateFromContent() — write to disk
  mkdir.go              # Mkdir() — create directories
  helpers.go            # Template functions (toModelName, toSnake, toPlural, etc.)
  module.go             # ModuleName() — reads module name from go.mod in cwd
  project.go            # IsInsideCatuabaProject() — validates cwd is a Catuaba app
  templates/            # All .tmpl files (embedded at compile time)
    application/        # Templates for `catuaba new` (full app skeleton)
    scaffold/           # Templates for `catuaba g scaffold` and `catuaba g api`
    model.go.tmpl       # Standalone model template
    controller.go.tmpl  # Standalone controller template
    *.tmpl              # Other generator templates
code_editor/            # AST-based Go source code manipulation
  add_import.go         # AddImport() / AddAliasedImport() — inject imports via AST
  insert_attribute.go   # InsertAttribute() — add fields to structs
  edit_file.go          # EditFile() — read-modify-write pattern
mcp/                    # MCP server for AI integration
  server.go             # Server setup
  parser/               # Go source code parsers (routes, models, controllers, etc.)
plugin/                 # Plugin system (manifest, registry, install, inject)

Read the full file on GitHub · 177 lines

Changes

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 First seen · 177 lines · 2,260 tokens per session scan A ed07bd9cefe5

Subscribe to this mod's changes

catuaba CLAUDE.md is an instructions file published in the GitHub repository dayvsonlima/catuaba (20 stars, last pushed 8mo ago), licensed MIT. It adds 2,260 tokens to every session, about $0.0090 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.

Backend and APIs Frontend cli code-generator crud full-stack go

catuaba CLAUDE.md next to 6 instructions from other repositories
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catuaba: Instructions file for Claude Code