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oh-my-openagent

#22 agent harnessverified Sep 3, 20265.1.9

Source-available agent harness for OpenCode and Codex CLI with orchestrator, planner and worker agents, LSP tools and bundled MCPs

Key differences

Source-available agent harness for OpenCode and Codex CLI with orchestrator, planner and worker agents, LSP tools and bundled MCPs

  • Runs local. Free under the Sustainable Use License for personal and internal use; models are billed through the host agent's provider keys or subscriptions
  • Runs multiple agents. Listed for 165 of 194 tools in this category.

“Its orchestrator is named Sisyphus, which is the most honest name anyone has given a build loop.”

Website Docs 70k starsCompare vs…Dispute a fact
Appeal a claim or request ownership transfer

What it is

oh-my-openagent, formerly oh-my-opencode, is YeonGyu Kim's plugin harness for complex codebases: an Ultimate edition for OpenCode with 11 agents such as Sisyphus (orchestrator), Prometheus (planner), Hephaestus (deep worker) and Oracle, plus team mode, background subagents, LSP and AST tools and curated MCP servers; a Light edition (lazycodex) for Codex CLI; and a standalone beta. It routes each step to the model and agent best suited to it across Anthropic, OpenAI, Gemini, Kimi, GLM and GitHub Copilot, and is aimed at heavy terminal-agent users who want a tuned multi-agent setup out of the box.

Specification

Source verification

Row snapshot checked 2026-09-03. Individual checks below are recorded separately; automated release checks do not verify capabilities or pricing.

pricing
Needs individual review
license
Needs individual review
install
Needs individual review
models
Needs individual review
protocols
Needs individual review
capabilities
Needs individual review

Architecture

Type
Agent harness
Runssrc ↗
local
Platforms
macos, linux, windows
Context windowsrc ↗
not documented
Languages
any

Models

Backbonesrc ↗
Anthropic, OpenAI, Google Gemini, Kimi, GLM, GitHub Copilot
Bring your own model
Yes
Local models
No

Protocols

MCP clientsrc ↗
Yes
MCP server
No
OpenAPI tools
No

Capabilities

Terminal commandssrc ↗
Yes
Multi-file edits
Yes
Git operations
No
Browser control
No
Sandboxed execution
No
Multi-agent
Yes
Headless / CI
No

Cost

Modelsrc ↗
free
Starts at
$0/mo
Free tier
Yes
Bring your own key
Yes

Free under the Sustainable Use License for personal and internal use; models are billed through the host agent's provider keys or subscriptions

Openness

Open sourcesrc ↗
No
License
Sustainable Use License 1.0
First release
2025-12
renamedsource-availablepluginopencodecodexsubagentsmulti-agentlspmcp

Los Agentes on oh-my-openagent

Who are they?
The ruling
El JuezThe judge

The panel lands inside two points and low, and the deciding facts are La Jefa's three third parties and El Crítico's blocked host.

Adopt with conditions
Reasoning and trade-offs · AI analysis

El Crítico reports that "Anthropic blocked OpenCode because of this project", so the host has been cut off once already. La Jefa finds the install bundling servers that send code searches to Exa, Context7 and Grep.app. El Hacker is precise where the badge is not: the licence is source-available, not open.

El Amigo scores it highest because the setup "arrives tuned", and he is overruled on the default configuration, since what arrives tuned also arrives pointed at three parties nobody read the terms of. La Jefa's data-flow review is the gate. Adopt with conditions, the conditions being those search servers disabled until the review and a second provider configured.

Agree with El Juez?
El AmigoThe friend

Pick oh-my-openagent if you already run OpenCode or Codex CLI and want a planner, a deep worker and an oracle wired in; pick oh-my-claudecode if your agent is Claude Code.

6.5
Reasoning and trade-offs · AI analysis

oh-my-openagent is for the heavy terminal-agent user who has outgrown one loop. Install the Ultimate edition into OpenCode or the Light edition, lazycodex, into Codex CLI, and you get named specialists, Prometheus to plan, Hephaestus to grind, Oracle to debug, plus a team mode that runs them together. The trait that decides it is that the setup arrives tuned; you do not spend the weekend writing agent prompts.

Pick it if OpenCode or Codex is already your daily driver and your tasks span many files. Pick oh-my-claudecode if you are on Claude Code, and plain OpenCode if one agent still finishes your work.

reliability
6
usefulness
7
cost
7
longevity
6
Agree with El Amigo?
El CríticoThe critic

The README records that Anthropic blocked OpenCode because of this project, and it was renamed from oh-my-opencode; the host it depends on has already been cut off once.

5.5
Reasoning and trade-offs · AI analysis

The risk is upstream. The README states that Anthropic blocked OpenCode because of this project, which means the harness has already cost its host a provider once, and a plugin that lives inside another agent inherits every such decision. The rename from oh-my-opencode to oh-my-openagent is the visible scar; installs and docs from the old name still circulate.

Keep a second provider configured. What it does right: edits that touch symbols go through LSP tools, lsp_rename and lsp_find_references, rather than text substitution, so a rename lands everywhere the compiler thinks it should.

reliability
5
usefulness
6
cost
6
longevity
5
Agree with El Crítico?
El ProfesorThe professor

Requests are routed by category, quick, deep, ultrabrain and visual-engineering, to different agents and models; five or more background specialists run with isolated context under 54-plus hooks.

5.5
Reasoning and trade-offs · AI analysis

The design is a router with specialists. 1. Each request is classified into a category, quick for single-file changes, deep for autonomous research, ultrabrain for architecture, visual-engineering for UI, and dispatched to the agent and model bound to that category. 2. Background agents run five or more specialists in parallel with context isolation. 3. Over 54 lifecycle hooks intercept the host's loop.

No benchmark is published, and the routing table is the claim; a study of misrouted tasks would be the paper to write. The observation: model names in the routing table are the part that will be stale first.

reliability
6
usefulness
5
cost
6
longevity
5
Agree with El Profesor?
La InversoraThe investor

One author, 69,000 stars, a plugin that lives inside two other vendors' agents, and a standalone beta called omo that is the pivot to owning the host.

4.8
Reasoning and trade-offs · AI analysis

YeonGyu Kim is an individual, and the asset is 68,659 stars of attention attached to a plugin. A plugin's business ceiling is set by its host, so the tell is the standalone beta: npm i -g omo-ai@beta installs a native omo command that no longer needs OpenCode or Codex. That is the pivot from accessory to product, and it is the right move if the crowd follows.

Pricing power: none until the standalone ships. Likely acquirer: an agent vendor hiring the author and folding the routing table into its own product. Position: watch the beta, not the plugin.

reliability
5
usefulness
6
cost
3
longevity
5
Agree with La Inversora?
La JefaThe CTO

Bundled MCP servers send web searches to Exa and code searches to Grep.app from every engineer's terminal, with no admin, no SSO and a bun prerequisite; not yet.

5.0
Reasoning and trade-offs · AI analysis

The demo is a planner handing work to a deep worker. Procurement: the install bundles MCP servers for Exa web search, Context7 documentation and Grep.app GitHub code search, so sixty terminals will be sending queries about our code to three third parties whose retention terms nobody here has read. There is no admin console, no SSO and no central log; there is no vendor, only a maintainer.

The Ultimate install requires bun, which is not on our standard image. It does not run in CI. Onboarding for an OpenCode user is an hour. Not yet; a data-flow review first.

reliability
4
usefulness
5
cost
6
longevity
5
Agree with La Jefa?
El HackerThe tinkerer

Sustainable Use License 1.0, free for personal and internal use and not for resale, config in .omo/omo.jsonc walked upward from the project, six hosted providers and no local one.

5.8
Reasoning and trade-offs · AI analysis

The licence is the Sustainable Use License 1.0: I can read it, run it and modify it for myself or my company, and I cannot sell it as a service. Fair, and stated plainly. Configuration is JSONC in ~/.omo/omo.jsonc for the user and .omo/omo.jsonc in the project, discovered by walking upward, so per-repo routing lives in git.

The gap is local models: the routing table names Anthropic, OpenAI, Gemini, Kimi, GLM and Copilot, and nothing on my own box. Forkable in the personal sense, not the commercial one. Useful, with a fence around it.

reliability
6
usefulness
6
cost
6
longevity
5
Agree with El Hacker?