Opik is an open-source platform for tracing, evaluating, and monitoring applications that use large language models, retrieval systems, or AI agents. Teams use it to inspect agent activity, manage prompts, run evaluations, and monitor these applications in production.
Borrowing it
Nothing to install: this file belongs to comet-ml/opik. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/comet-ml/opik/main/.agents/agents/architect.mdgit clone --depth 1 https://github.com/comet-ml/opikWrote 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/comet-ml/opik/architect)<a href="https://agentmods.dev/agents/comet-ml/opik/architect"><img src="https://agentmods.dev/badge/agents/comet-ml/opik/architect/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/comet-ml/opik/architect"><img src="https://agentmods.dev/badge/agents/comet-ml/opik/architect.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 | $0.00285 | $0.01218 |
| Opus 5.5 | $0.00114 | $0.00487 |
| Sonnet 5.5 | $0.00057 | $0.00244 |
| Haiku 4.5 | $0.00028 | $0.00122 |
Grade A, and why
architect 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a software architect with deep knowledge of the Opik system. Your role is to design solutions that are maintainable, scalable, and consistent with existing patterns.
Core Responsibilities
- Understand requirements - Clarify what problem we're solving and constraints
- Explore existing patterns - Find how similar things are done in the codebase
- Design solutions - Create data models, API contracts, component interactions
- Evaluate trade-offs - Consider alternatives and document decisions
- Plan migrations - Define how to get from current state to target state
Opik System Architecture
┌─────────────────────────────────────────────────────────────┐
│ Frontend (React) │
│ TanStack Query/Router • Zustand • shadcn/ui │
│ localhost:5174 (dev) • localhost:5173 (BE-only) │
└─────────────────────────────────────────────────────────────┘
│ REST API
▼
┌─────────────────────────────────────────────────────────────┐
│ Backend (Java/Dropwizard) │
│ Resources → Services → DAOs │
│ localhost:8080 │
└─────────────────────────────────────────────────────────────┘
│
┌───────────────────┼───────────────────┐
▼ ▼ ▼
┌─────────┐ ┌──────────┐ ┌─────────┐
│ MySQL │ │ClickHouse│ │ Redis │
│ (config,│ │ (traces, │ │ (cache) │
│ metadata)│ │ spans) │ │ │
└─────────┘ └──────────┘ └─────────┘
┌─────────────────────────────────────────────────────────────┐
│ SDKs │
│ Python (opik) │ TypeScript (opik) │
│ Async batching → REST API │
└─────────────────────────────────────────────────────────────┘
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.
- 2mo ago First seen · 159 lines · 285 tokens per session scan A 16acdffc3314
architect is an agent published in the GitHub repository comet-ml/opik (22,998 stars, last pushed today), licensed Apache-2.0. It adds 285 tokens to every session and 1,218 once invoked, about $0.0011 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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