matteingCommunity·9 Agent Skills Included

opal

Elixir coding agent harness with parallel sub-agents

Builds and runs coding agents on Elixir/OTP with file editing, shell execution, and parallel sub-agents. Eliminates manual resource cleanup and thread management through OTP supervision trees and process mailboxes. Embeds directly into Elixir apps as a library or runs as a standalone terminal coding assistant. Supports live introspection, mid-flight redirection, and JSON-RPC integration for custom interfaces.

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npx skills add matteing/opal --all -g -y

Available:

Explains the Opal architecture, built-in tools, and development commands so the agent understands how the Elixir/OTP coding harness is structured and operated.

All Skills in This Repository (9)

Pure Emerald Level Indicators

📦 In Repo

matteing

ci-preflight

Run the full CI suite locally to verify Elixir and TypeScript checks before pushing.

debugging

Diagnose Opal agent runtime failures with structured debug_state JSON snapshots.

docs

Update repository documentation with overviews, interface examples, Mermaid diagrams, and references.

live-tests

Record GitHub Copilot API SSE events as replayable JSON fixtures.

citations

Organize user-provided links and citations into docs/research/references.md.

lint-and-format

Run ESLint, Prettier, and Elixir formatting checks before commits.

elixir-cyclic-deps

Detect and remove compile-time dependency cycles in Elixir projects using mix xref.

codegen-sync

Synchronize TypeScript SDK types with updated Elixir protocol definitions.

git

Validate commit messages against the Conventional Commits specification.

Community

Intermediate

Frequently Asked Questions

FAQPage Schema

How to install Opal?▼

Run `npx skills add matteing/opal --all -g -y` in your terminal to install all skills in this suite globally.

What is Opal used for?▼

Opal is a coding agent harness built on Elixir/OTP that edits files, runs shell commands, debugs issues, and splits work across parallel sub-agents.

Can I embed Opal in my own Elixir app?▼

Yes. Add `{:opal, "~> 0.1"}` to your dependencies and the full agent system runs inside your app via plain Erlang message passing, with no sidecar or serialization.

Which model providers does Opal support?▼

Currently only GitHub Copilot is supported, but the provider layer is designed so additional providers can be added.

Can I watch what the agent is doing live?▼

Yes. You can connect from another terminal via Erlang distribution to stream every event, thought, and tool call in real time.