stampo: Instructions file for Codex

Stampo Agent Instructions

Stampo generates CLIs from YAML configs and OpenAPI specs. See README.md for features and docs/ for full documentation.

Build & Test

Requires Rust toolchain via mise:

eval "$(mise activate zsh)" && cargo build
eval "$(mise activate zsh)" && cargo test

Project Structure

src/
  main.rs          -- Entry point, mode dispatch (~230 lines)
  init.rs          -- Init flow, default config creation, references, base-dir resolution
  refresh.rs       -- Refresh and update-check logic
  shell.rs         -- Shell detection, alias install, completion hooks
  cli.rs           -- CLI construction (clap builder API), command execution
  config.rs        -- Config loading, validation, placeholder/env-var replacement
  models.rs        -- YAML data structures (Configuration, Command, Flag, CmdType)
  cache.rs         -- Trusted config storage (~/.stampo/aliases/), SHA-256 hashing
  style.rs         -- Color output (ANSI, NO_COLOR, --color flag)
  errors.rs        -- Error types
  openapi/
    mod.rs         -- Public API: process_openapi_source()
    parser.rs      -- OpenAPI 3.0 spec parsing via openapiv3
    transform.rs   -- Spec-to-Configuration transformation, path hierarchy, flag generation
    http_tool.rs   -- curl/wget detection, command generation, remote fetching
tests/
  integration.rs   -- End-to-end CLI tests (init, completions, OpenAPI, live shell tests)
  fixtures/        -- Test YAML configs and OpenAPI specs
docs/
  getting-started.md          -- Step-by-step setup guide
  configuration-reference.md  -- Full YAML schema reference
  openapi-guide.md            -- OpenAPI usage guide
  setup-guide.md              -- Installation and setup

Architecture

• Dynamic CLI from YAML -- commands are loaded at runtime, must use clap builder API (not derive)
• Two modes: installer (stampo init) and alias (stampo --alias-mode <name>)
• OpenAPI support: specs transformed to Configuration structs at init time, commands use curl/wget
• Trust model: configs cached with SHA-256 in ~/.stampo/aliases/<name>/
• Zero network footprint: no HTTP client in the binary, curl/wget for external tools only
• Placeholder syntax: ${{flag_name}} and ${{env.VAR_NAME}}
• Shell support: bash, zsh, fish, powershell (functions + tab completion)
• Output: stdout for command output only, stderr for all stampo messages
• POSIX-safe: ASCII-only output, no emojis