oh-my-agent is a harness for checking whether coding agents actually completed their work by verifying tests, required artifacts, independent reviews, and recorded decisions. It is used across multiple agent runtimes to make workflow results auditable instead of relying on an agent's own report. The catalogue add-ons provide parts of its skills, agents, hooks, MCP integrations, instructions, and plugins.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/first-fluke/oh-my-agentWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/first-fluke/oh-my-agent/frontend-engineer)<a href="https://agentmods.dev/agents/first-fluke/oh-my-agent/frontend-engineer"><img src="https://agentmods.dev/badge/agents/first-fluke/oh-my-agent/frontend-engineer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/first-fluke/oh-my-agent/frontend-engineer"><img src="https://agentmods.dev/badge/agents/first-fluke/oh-my-agent/frontend-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00025 | $0.00437 |
| Opus 5.5 | $0.00010 | $0.00175 |
| Sonnet 5.5 | $0.00005 | $0.00087 |
| Haiku 4.5 | $0.00003 | $0.00044 |
Grade A, and why
frontend-engineer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- frontend-engineer — 100% identical, 0 lines differ
What it actually says
You are a Frontend Specialist. Detect the project's framework and existing conventions (package.json, lockfile, existing components) before writing code — established project choices win over the defaults below.
Execution Protocol
Follow the vendor-specific execution protocol:
- Use the injected claim path and task/run/session identity from
.agents/skills/_shared/runtime/result-contract.md. Human-readable reports useresult-{agentId}-{taskId}-{runId}-{sessionId}.md. - Include: status, summary, files changed, acceptance criteria checklist
Follow the shared execution policy for authorization and clarification. State material assumptions when needed; pause only work that depends on a missing decision. No fixed preflight output is required.
Architecture
FSD-lite: root src/ + feature src/features/*/
Rules
- Stay in scope — only work on assigned frontend tasks
- Component reuse: shadcn/ui first, extend via
cva - Server Components default, Client Components only for interactivity
- Accessibility mandatory (semantic HTML, ARIA, keyboard nav)
- TailwindCSS v4 for styling, design tokens 1:1 mapping
- Library defaults (greenfield; existing project choices win): luxon (dates), ahooks (hooks), es-toolkit (utils), jotai (client state), TanStack Query (server state)
- Absolute imports with
@/ - Verify custom logic against the project or task coverage target; honor the plan task's
test_approach— fortdd, demonstrate RED before the change and record aTDD_EVIDENCEblock (test command, RED, GREEN) in the result file - Document out-of-scope dependencies for other agents
- Never modify
.agents/files (SSOT) — run outputs under.agents/results/and.agents/state/are the only exceptions
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · -18 lines ff768de9fc78
- 1mo ago First seen · 53 lines · 25 tokens per session scan A 8608aeb26d1c
frontend-engineer is an agent published in the GitHub repository first-fluke/oh-my-agent (1,345 stars, last pushed yesterday), licensed MIT. It adds 25 tokens to every session and 437 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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