ocaml-dev

OCaml Claude Marketplace

A collection of Claude Code plugins for OCaml development, based initially on the experiences in https://anil.recoil.org/notes/2025-aoah

Installation

Add this marketplace to Claude Code:

/plugin marketplace add avsm/ocaml-claude-marketplace

Then install the OCaml development plugin:

/plugin install ocaml-dev@ocaml-claude-marketplace

Available Plugins

ocaml-dev

Comprehensive OCaml development toolkit including:

Slash Commands:

• /init-ocaml [name] - Initialize a new OCaml project with dune, opam, CI, and standard files
• /port-to-dune - Migrate ocamlbuild/topkg projects to dune
• /add-rfc <number> - Fetch an IETF RFC and integrate with ocamldoc citations
• /ocaml-npm - Set up npm publishing for js_of_ocaml/wasm_of_ocaml projects
• /tidy - Refactor OCaml code to be more idiomatic

Skills (auto-invoked):

Project & Build:

• Project setup and metadata standards
• Build system migration (ocamlbuild/topkg to dune)
• NPM/browser publishing workflow
• RFC integration and documentation

Code Quality:

• Code style and refactoring patterns
• Tutorial creation with MDX

OCaml 5 & Concurrency:

• eio - Eio concurrency patterns, switches, fibers, mocks
• effects - Algebraic effects design (effects vs exceptions, layered design)

Library-Specific:

• cmdliner - CLI design following Daniel Bünzli's principles
• jsont - Type-safe JSON encoding/decoding with jsont

Testing & Profiling:

• Testing strategies (including Eio mocks)
• fuzz - Fuzz testing with Crowbar (roundtrips, crash-safety, boundaries)
• memtrace - Allocation profiling and hotspot analysis

OxCaml Extensions:

• Unboxed types, stack allocation, SIMD, zero-alloc annotations

LSP Integration:

• ocamllsp for .ml, .mli, .mly, .mll files

User Configuration

Create ~/.claude/ocaml-config.json for personalized settings:

{
  "author": {
    "name": "Your Name",
    "email": "you@example.com"
  },
  "license": "ISC",
  "ci_platform": "github",
  "git_hosting": {
    "type": "github",
    "org": "your-username"
  },
  "ocaml_version": "5.2.0"
}

If not configured, commands will prompt for required values.

CI Platform Support

The plugin includes CI templates for:

• GitHub Actions
• Tangled.org
• GitLab CI

Select your preferred platform in the configuration.

License

ISC License