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.

catuaba CLAUDE.md — Instructions file for coding agents by dayvsonlima: A Rails-like command-line framework for Go that generates full-stack

Install

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.

agentmods

npx agentmods add instructions/dayvsonlima/catuaba/claude-md

Clone the repo

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

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.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.svg" alt="Measured on agentmods" 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. Scan, not verified.

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	$0.02260	$0.02260
Opus 5	$0.01130	$0.01130
Sonnet 5	$0.00452	$0.00452
Haiku 4.5	$0.00226	$0.00226

Measured 5d ago against content hash ed07bd9cefe5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 5d 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.

5d 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 (19 stars, last pushed 6mo ago), licensed MIT. It adds 2,260 tokens to every session, about $0.0113 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.

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

catuaba CLAUDE.md

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

Catuaba

Quick Reference

Architecture

What this file has done since we first saw it

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