Open agent harness

oh-my-openagent

A popular agent harness for complex codebases, project memory, planning, execution, and verified completion.

Last updated: 2026-07-08

What it does

oh-my-openagent, formerly known in the ecosystem around oh-my-opencode, packages memory, planning, execution, verification, and orchestration patterns for coding agents.

Best fit

Codex, OpenCode, and terminal-agent users who want a stronger coding loop.

Capabilities

  • Ultimate edition for OpenCode: 11 agents, lifecycle hooks, built-in MCPs, slash commands, Team Mode, ultrawork, and hashline edits.
  • Codex CLI Light edition via LazyCodex: rules, comment checker, git-bash, LSP, ultrawork, ulw-loop, continuation, telemetry, and plugin-scoped MCPs.
  • Team Mode can run a lead agent plus parallel members, with tmux visualization and team tools.
  • Integrated code intelligence: LSP rename, goto definition, references, diagnostics, AST-Grep search and rewrite.
  • Context and rules injection can load AGENTS.md and project rules into the agent at each prompt.
  • Hash-anchored edits tag lines with content hashes so stale edits are rejected before corrupting files.

Use cases

  • Add memory and verification loops to a coding-agent workflow.
  • Coordinate planning and execution across complex repositories.
  • Type ultrawork or ulw to trigger a stronger end-to-end execution loop.
  • Enable Team Mode when a feature needs frontend, backend, security, and review work in parallel.
  • Use /init-deep to generate layered AGENTS.md files for a large repo.
  • Use LSP and AST-Grep tools for safer rename, diagnostics, references, and structural rewrites.

Plugin and skill directory